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Seattle City Council Bills and Ordinances
Information modified on April 12, 2006; retrieved on October 22, 2025 12:55 PM
Ordinance 121522
Introduced as Council Bill 114934
Title | |
|---|---|
| AN ORDINANCE relating to energy efficiency and energy conservation: amending Section 22.700.010 of the Seattle Municipal Code ("SMC"), to adopt by reference the 2003 Washington State Energy Code (WAC 51-11) and to repeal the 2001 Washington State Energy Code and amendments thereto; and amending the 2003 Washington State Energy Code Chapter 7, Standards; Chapter 10, Default Heat Loss Coefficients; Chapter 11, Administration and Enforcement; Chapter 13, Building Envelope; Chapter 14, Building Mechanical Systems; Chapter 15, Lighting, Motors, and Transformers; and Reference Standard 29, Nonresidential Building Design by Systems Analysis. | |
Description and Background | |
|---|---|
| Current Status: | Passed |
| Fiscal Note: | Fiscal Note to Council Bill No. 114934 |
| Index Terms: | ENERGY-CODES, BUILDING-CODES |
| References: | Related: CF 306766 |
Legislative History | |
|---|---|
| Sponsor: | STEINBRUECK |
| Date Introduced: | June 21, 2004 |
| Committee Referral: | Urban Development and Planning |
| City Council Action Date: | July 6, 2004 |
| City Council Action: | Passed |
| City Council Vote: | 8-0 (Excused: Drago) |
| Date Delivered to Mayor: | July 7, 2004 |
|
Date Signed by Mayor: (About the signature date) | July 16, 2004 |
| Date Filed with Clerk: | July 16, 2004 |
| Signed Copy: | PDF scan of Ordinance No. 121522 |
Text | |
|---|---|
|
ORDINANCE __________________ AN ORDINANCE relating to energy efficiency and energy conservation: amending Section 22.700.010 of the Seattle Municipal Code ("SMC"), to adopt by reference the 2003 Washington State Energy Code (WAC 51-11) and to repeal the 2001 Washington State Energy Code and amendments thereto; and amending the 2003 Washington State Energy Code Chapter 7, Standards; Chapter 10, Default Heat Loss Coefficients; Chapter 11, Administration and Enforcement; Chapter 13, Building Envelope; Chapter 14, Building Mechanical Systems; Chapter 15, Lighting, Motors, and Transformers; and Reference Standard 29, Nonresidential Building Design by Systems Analysis. BE IT ORDAINED BY THE CITY OF SEATTLE AS FOLLOWS: Section 1. Section 22.700.010, SMC, as last amended by Ordinance 120804 is further amended as follows:
22.700.010 Adoption of the
The Section 2. Section 701 of the 2003 Washington State Energy Code is amended as follows: Section 701 Standards: The following standards shall apply to Chapters 1 through 20. The standards and portions thereof, which are referred to in various parts of this Code shall be part of the Washington State Energy Code and are hereby declared to be a part of this Code. CODE STANDARD NO. TITLE AND SOURCE RS-1 2001 ASHRAE Fundamentals Handbook. RS-2 Super Good Cents Technical Reference (Builder's Field Guide). RS-3: (Reserved.) RS-4 ASHRAE Standard 55-92 Thermal Environmental Conditions for Human Occupancy. RS-5 1998 ASHRAE Refrigeration Handbook. RS-6 SMACNA, Installation Standards for Residential Heating and Air Conditioning Systems, 6th Edition, 1988. RS-7 SMACNA, HVAC Duct Construction Standards Metal and Flexible, 2nd Edition, 1995. RS-8 SMACNA, Fibrous Glass Duct Construction Standards, 6th Edition, 1992. RS-9 ASHRAE/IESNA Standard 90.1-2001, Energy Standard for Buildings Except Low-Rise Residential Buildings. RS-10 2000 ASHRAE Systems & Equipment Handbook.
RS-11 RS-12 RS-28: (Reserved.) RS-29 Nonresidential Building Design by Systems Analysis. RS-30 Title 10, Code of Federal Regulations (CFR), Part 430 (March 14, 1988). RS-31 National Fenestration Rating Council (NFRC) Standard 100-2001. RS-32 Seattle EnvStd, available for download at the Seattle Energy Code homepage at: http://www.seattle.gov/dpd/energy ACCREDITED AUTHORITATIVE AGENCIES ANSI refers to the American National Standards Institute, Inc., 11 West 42nd Street, New York, NY 10036 Phone (212) 642-4900 Fax (212) 398-0023, Internet www.ansi.org ARI refers to the Air-Conditioning and Refrigeration Institute, 4301 N. Fairfax Dr., Suite 425, Arlington, VA 22203 Phone (703) 524-8800 Fax (703) 528-3816, Internet www.ari.org ASHRAE refers to the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., 1791 Tullie Circle, N.E., Atlanta, GA 30329 Phone (404) 636-8400 Fax (404) 321-5478, Internet www.ashrae.org ASTM refers to the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 Phone (610) 832-9585 Fax (610) 832-9555, Internet www.astm.org CTI refers to the Cooling Tower Institute, 530 Wells Fargo Drive, Suite 218, Houston, TX 77090 Phone (281) 583-4087 Fax (281) 537-1721, Internet www.cti.org IESNA refers to the Illuminating Engineering Society of North America, 120 Wall Street, Floor 17, New York, NY 10005-4001 Phone (212) 248-5000 Fax (212) 248-5017, Internet www.iesna.org NFRC refers to the National Fenestration Rating Council, Inc., 8484 Georgia Avenue, Suite 320, Silver Spring, Maryland 20910
Phone (301) 589-1776 Fax (301) 589-3884 SMACNA refers to the Sheet Metal and Air Conditioning Contractors National Association, Inc., 4201 Lafayette Center Drive, P.O. Box 221230, Chantilly, VA 20153-1230 Phone (703) 803-2980 Fax (703) 803-3732, Internet www.smacna.org Section 3. Table 10-5A of the 2003 Washington State Energy Code is amended as follows: TABLE 10-5A DEFAULT U-FACTORS FOR OVERALL ASSEMBLY METAL STUD WALLS, EFFECTIVE R-VALUES FOR METAL FRAMING AND CAVITY ONLY, AND DEFAULT METAL BUILDING U-FACTORS GROUP R OCCUPANCY: OVERALL ASSEMBLY U-FACTORS FOR METAL STUD WALLS R-Value of Cavity Insulation Metal Continuous Framing Foam Board Insulation R-11 R-13 R-15 R-19 R-21 R-25 16" o.c. R-0 (none) U-0.14 U-0.13 U-0.12 U-0.10 U-0.097 U-0.091 R-1 U-0.12 U-0.12 U-0.11 U-0.094 U-0.089 U-0.083 R-2 U-0.11 U-0.010 U-0.099 U-0.086 U-0.081 U-0.077 R-3 U-0.10 U-0.095 U-0.090 U-0.079 U-0.075 U-0.071 R-4 U-0.091 U-0.087 U-0.082 U-0.073 U-0.070 U-0.067 R-5 U-0.083 U-0.080 U-0.076 U-0.068 U-0.065 U-0.062 R-6 U-0.077 U-0.074 U-0.071 U-0.064 U-0.061 U-0.059 R-7 U-0.071 U-0.069 U-0.066 U-0.060 U-0.058 U-0.055 R-8 U-0.067 U-0.064 U-0.062 U-0.057 U-0.055 U-0.053 R-9 U-0.062 U-0.060 U-0.058 U-0.054 U-0.052 U-0.050 R-10 U-0.059 U-0.057 U-0.055 U-0.051 U-0.049 U-0.048 24" o.c. R-0 (none) U-0.13 U-0.12 U-0.11 U-0.091 U-0.085 U-0.079 R-1 U-0.11 U-0.10 U-0.098 U-0.084 U-0.078 U-0.073 R-2 U-0.10 U-0.091 U-0.089 U-0.077 U-0.073 U-0.068 R-3 U-0.092 U-0.083 U-0.082 U-0.072 U-0.068 U-0.064 R-4 U-0.084 U-0.077 U-0.076 U-0.067 U-0.063 U-0.060 R-5 U-0.078 U-0.071 U-0.070 U-0.063 U-0.060 U-0.057 R-6 U-0.072 U-0.067 U-0.066 U-0.059 U-0.056 U-0.054 R-7 U-0.067 U-0.063 U-0.062 U-0.056 U-0.053 U-0.051 R-8 U-0.063 U-0.059 U-0.058 U-0.053 U-0.051 U-0.048 R-9 U-0.059 U-0.056 U-0.055 U-0.050 U-0.048 U-0.046 R-10 U-0.056 U-0.053 U-0.052 U-0.048 U-0.046 U-0.044
OTHER THAN GROUP R OCCUPANCY: OVERALL ASSEMBLY U-FACTORS FOR METAL STUD WALLS
R-Value Cavity Insulation Metal of Framing Continuous Foam Board Insulation
R-0 R-11 R-13 R-15 R-19 R-21
16" o.c. R-0 (none) U-0.352 U-0.132 U-0.124 U-0.118 U-0.109 U-0.106
R-1 U-0.260 U-0.117 U-0.111 U-0.106 U-0.099 U-0.096
R-2 U-0.207 U-0.105 U-0.100 U-0.096 U-0.090 U-0.087
R-3 U-0.171 U-0.095 U-0.091 U-0.087 U-0.082 U-0.080
R-4 U-0.146 U-0.087 U-0.083 U-0.080 U-0.076 U-0.074
R-5 U-0.128 U-0.080 U-0.077 U-0.074 U-0.071 U-0.069
R-6 U-0.113 U-0.074 U-0.071 U-0.069 U-0.066 U-0.065
R-7 U-0.102 U-0.069 U-0.066 U-0.065 U-0.062 U-0.061
R-8 U-0.064 U-0.062 U-0.061 U-0.058 U-0.057
R-9 U-0.084 U-0.060 U-0.059 U-0.057 U-0.055 U-0.054
R-10 U-0.078 U-0.057 U-0.055 U-0.054 U-0.052 U-0.051
24" o.c. R-0 (none) U-0.338 U-0.116 U-0.108 U-0.102 U-0.094 U-0.090
R-1 U-0.253 U-0.104 U-0.098 U-0.092 U-0.086 U-0.083
R-2 U-0.202 U-0.094 U-0.089 U-0.084 U-0.079 U-0.077
R-3 U-0.168 U-0.086 U-0.082 U-0.078 U-0.073 U-0.071
R-4 U-0.144 U-0.079 U-0.075 U-0.072 U-0.068 U-0.066
R-5 U-0.126 U-0.073 U-0.070 U-0.067 U-0.064 U-0.062
R-6 U-0.112 U-0.068 U-0.066 U-0.063 U-0.060 U-0.059
R-7 U-0.100 U-0.064 U-0.062 U-0.059 U-0.057 U-0.055
R-8 U-0.091 U-0.060 U-0.058 U-0.056 U-0.054 U-0.052
R-9 U-0.084 U-0.057 U-0.055 U-0.053 U-0.051 U-0.050
R-10 U-0.077 U-0.054 U-0.052 U-0.050 U-0.048 U-0.048
EFFECTIVE R-VALUES FOR METAL FRAMING AND CAVITY ONLY
Cavity Insulation
Nominal Actual Nominal Effective R-Value Depth, Depth, R-Value Inches Inches
16" O.C. 24" O.C.
Air Cavity Any Any R-0.91 0.79 0.91 (air)
4 3-1/2 R-11 5.5 6.6
Wall 4 3-1/2 R-13 6.0 7.2
4 3-1/2 R-15 6.4 7.8
6 5-1/2 R-19 7.1 8.6
6 5-1/2 R-21 7.4 9.0
8 7-1/4 R-25 7.8 9.6
Insulation R-11 5.5 6.1 Roof is uncompressed
R-19 7.0 9.1
R-30 9.3 11.4
DEFAULT METAL BUILDING U-FACTORS
R-10 R-11 R-13 R-19 R-24 R-30
Faced fiber glass blanket insulation rolled over and 0.133 0.127 0.114 0.091 na na perpendicular to structural frame. Metal covering sheets fastened to the frame, holding insulation in place.
Faced fiber glass batt insulation suspended between structural frame. 0.131 0.123 0.107 0.079 0.065 0.057 Metal covering sheets fastened directly to frame.
Faced fiber glass blanket insulation rolled over and 0.102 0.096 0.084 0.065 na na perpendicular to structural frame. Rigid insulation blocks placed over insulation to align with structural frame.
Faced fiber glass batt insulation suspended between structural frame. 0.099 0.093 0.080 0.059 0.048 0.041 Rigid insulation blocks placed over insulation to align with structural frame.
Section 4. Table 10-5B of the 2003 Washington State Energy Code is amended as follows: TABLE 10-5B(2) OTHER THAN GROUP R OCCUPANCY: DEFAULT U-FACTORS FOR CONCRETE AND MASONRY WALLS Rated R-Value of Assembly Assembly U-Factors Assembly Framing Insulation Alone UFactors for for U-Factors for Type and Solid Concrete Concrete Block Walls: Concrete Block Depth Walls Walls: Solid Grouted Partially Grouted (Cores uninsulated except where specified) No R- 0 U0.740 U- 0.580 U- Framing 0.480 Ungrouted Cores N.A. N.A. U- Filled with 0.350 Loose-Fill Insulation Continuous Wood Framing R- 3.0 U0.247 U- 0.226 U- 0.75 in. 0.210 R- 6.0 U0.160 U- 0.151 U- 1.5 in. 0.143 R- 10.0 U0.116 U- 0.111 U- 2.0 in. 0.107 R- 11.0 U0.094 U- 0.091 U- 3.5 in. 0.088 R- 13.0 U0.085 U- 0.083 U- 3.5 in. 0.080 R- 15.0 U0.079 U- 0.077 U- 3.5 in. 0.075 R- 19.0 U0.060 U- 0.059 U- 5.5 in. 0.058 R- 21.0 U0.057 U- 0.055 U- 5.5 in. 0.054 Continuous Metal Framing at 24 in. on center horizontally R- 3.0 U0.364 U- 0.321 U- 0.75 in. 0.288 R- 6.0 U0.274 U- 0.249 U- 1.5 in. 0.229 R- 10.0 U0.225 U- 0.207 U- 2.0 in. 0.193 R- 11.0 U0.168 U- 0.158 U- 3.5-4 in. 0.149 .0 R- 13.0 U0.161 U- 0.152 U- 3.5-4 in. 0.144 .0 R- 15.0 U0.155 U- 0.147 U- 3.5-4 in. 0.140 .0 R- 19.0 U0.118 U- 0.113 U- 5.5-6 in. 0.109 .0 R- 21.0 U0.113 U- 0.109 U- 5.5-6 in. 0.105 .0 1 in. Metal Clips at 24 in. on center horizontally and 16 in. vertically R- 3.8 U0.210 U- 0.195 U- 1.0 in. 0.182 R- 5.0 U0.184 U- 0.172 U- 1.0 in. 0.162 R- 5.6 U0.174 U- 0.163 U- 1.0 in. 0.154 R- 5.7 U0.160 U- 0.151 U- 1.5 in. 0.143 R- 7.5 U0.138 U- 0.131 U- 1.5 in. 0.125 R- 8.4 U0.129 U- 0.123 U- 1.5 in. 0.118 R- 7.6 U0.129 U- 0.123 U- 2.0 in. 0.118 R- 10.0 U0.110 U- 0.106 U- 2.0 in. 0.102 R- 11.2 U0.103 U- 0.099 U- 2.0 in. 0.096 R- 9.5 U0.109 U- 0.104 U- 2.5 in. 0.101 R- 12.5 U0.092 U- 0.089 U- 2.5 in. 0.086 R- 14.0 U0.086 U- 0.083 U- 2.5 in. 0.080 R- 11.4 U0.094 U- 0.090 U- 3.0 in. 0.088 R- 15.0 U0.078 U- 0.076 U- 3.0 in. 0.074 R- 16.8 U0.073 U- 0.071 U- 3.0 in. 0.069 R- 13.3 U0.082 U- 0.080 U- 3.5 in. 0.077 R- 17.5 U0.069 U- 0.067 U- 3.5 in. 0.065 R- 19.6 U0.064 U- 0.062 U- 3.5 in. 0.061 R- 15.2 U0.073 U- 0.071 U- 4.0 in. 0.070 R- 20.0 U0.061 U- 0.060 U- 4.0 in. 0.058 R- 22.4 U0.057 U- 0.056 U- 4.0 in. 0.054 R- 28.0 U0.046 U- 0.046 U- 5.0 in. 0.045 Continuous Insulation Uninterrupted by Framing No R- 3.0 U0.230 U- 0.212 U- Framing 0.197 R- 4.0 U0.187 U- 0.175 U- 0.164 R- 5.0 U0.157 U- 0.149 U- 0.141 No R- 6.0 U0.136 U- 0.129 U- Framing 0.124 R- 7.0 U0.120 U- 0.115 U- 0.110 R- 8.0 U0.107 U- 0.103 U- 0.099 R- 9.0 U0.097 U- 0.093 U- 0.090 R- 10.0 U0.088 U- 0.085 U- 0.083 No R- 11.0 U0.081 U- 0.079 U- Framing 0.076 R- 12.0 U0.075 U- 0.073 U- 0.071 R- 13.0 U0.070 U- 0.068 U- 0.066 R- 14.0 U0.065 U- 0.064 U- 0.062 R- 15.0 U0.061 U- 0.060 U- 0.059 No R- 16.0 U0.058 U- 0.056 U- Framing 0.055 R- 17.0 U0.054 U- 0.053 U- 0.052 R- 18.0 U0.052 U- 0.051 U- 0.050 R- 19.0 U0.049 U- 0.048 U- 0.047 R- 20.0 U0.047 U- 0.046 U- 0.045
Notes for Default Table 10-5B(2)
1. It is acceptable to use the U-factors in Table 10-5B(2) for all concrete and masonry walls, provided that the grouting is equal to or less than that specified.
For ungrouted walls, use the partially-grouted column.
For metal studs and z-furring, use the continuous-metal-framing category.
For discontinuous metal clips 1 inch square or smaller, use the metal-clip category.
For insulation that is attached without any framing members (e.g. glued), use the continuous-insulation-uninterrupted-by-framing category. Continuous insulation may be installed on the interior or exterior of masonry walls, or between stand-alone walls
in multi-layer masonry walls, or on the interior or exterior of the concrete.
2. For Table 10-5B(2), the U-factor includes R-0.17 for exterior air film and R-0.68 for interior air film vertical surfaces. For insulated walls, the U-factor also includes R-0.45 for 0.5 in. gypsum board. U-factors are provided for the following
configurations:
3. For walls with insulation contained in a framing layer, the Ufactors in Table 10-5B(2) assume contact (and thermal bridging) between the mass wall and other framing. For wall assemblies with multiple layers where the wood or metal framing layer
does not contact the concrete or masonry layer (i.e. walls with an airspace between the stud wall layer and the mass wall layer), it is acceptable to use the appropriate wood or metal frame wall default U-factors in Tables 10-5 or 10-5A. Note, it is
acceptable to use this approach where the insulation extends beyond the framing and is in contact with the mass wall layer (e.g. a nominal four-inch metal stud containing insulation that is nominally six inches thick and therefore extends two inches
beyond the back of the metal stud).
4. Except for wall assemblies qualifying for note 3, if not taken from Table 10-5B(2), mass wall U-factors shall be determined in accordance with ASHRAE/IESNA Standard 90.1-2001, Appendix A, Section A3.1 and Tables A-5 to A-8, or Section A9.4. If not
taken from Table 10-9, heat capacity for mass walls shall be taken from ASHRAE/IESNA Standard 90.1-2001, Appendix A, Table A-6 or A-7.
TABLE 10-6 OTHER THAN GROUP R OCCUPANCY: DEFAULT U-FACTORS FOR VERTICAL GLAZING, OVERHEAD GLAZING AND OPAQUE DOORS VERTICAL GLAZING (INCLUDING FRAME) U-Factor Any Vinyl/ Frame Aluminum Wood w/ Frame thermal break Single 1.45 1.45 1.45 Double 0.90 0.85 0.75 1/2 Inch Air, Fixed 0.75 0.70 0.60 1/2 Inch Air, Low-e(0.40), Fixed 0.60 0.55 0.50 1/2 Inch Air, Low-e(0.10), Fixed 0.55 0.50 0.45 1/2 Inch Argon, Low-e(0.10), Fixed 0.50 0.45 0.40
The category for aluminum frame with a thermal break is as defined in footnote 7 to Table 10-6A.
OVERHEAD GLAZING: SLOPED GLAZING (INCLUDING FRAME U-Factor
Any Frame Aluminum Vinyl/W w/ Wood thermal Frame break
Single 1.74 1.74 1.74}
Double 1.08 1.02 0.90
1/2 Inch Air, Fixed 0.90 0.84 0.72
1/2 Inch Air, Low-e(0.40), Fixed 0.72 0.66 0.60
1/2 Inch Air, Low-e(0.10), Fixed 0.66 0.60 0.54
1/2 Inch Argon, Low-e(0.10), Fixed 0.60 0.54 0.48
This default table is applicable to sloped glazing only. (Sloped glazing is a multiple-lite glazed system (similar to a curtain wall) that is mounted at a slope greater than 15 degrees from the vertical plane.) Other overhead glazing shall use the
defaults in Table 10-6E.
OPAQUE DOORS U-Factor Uninsulated Metal 1.20 Insulated Metal (Including Fire Door 0.60 and Smoke Vent) Wood 0.50 NOTES: Where a gap width is listed (i.e.: 1/2 inch), that is the minimum allowed. Where a low-emissivity emittance is listed (i.e.: 0.40, 0.20, 0.10), that is the maximum allowed. Where a gas other than air is listed (i.e.: argon), the gas fill shall be a minimum of 90%. Where an operator type is listed (i.e.: fixed), the default is only allowed for that operator type. Where a frame type is listed (i.e.: wood/vinyl), the default is only allowed for that frame type. Wood/Vinyl frame includes reinforced vinyl and aluminum-clad wood. Section 6. Section 1132.2 of the 2003 Washington State Energy Code is amended as follows: 1132.2 Building Mechanical Systems: Those parts of systems which are altered or replaced shall comply with Chapter 14 of this Code.
All new systems in existing buildings, including packaged unitary equipment and packaged split systems, shall comply with Chapter 14.
Alterations to existing mechanical cooling systems shall not decrease economizer capacity unless the system complies with Sections 1413 and either 1423 or 1433. In addition, for existing mechanical cooling systems that do not comply with
Sections 1413 and either 1423 or 1433, including both the individual unit size limits and the total building capacity limits on units without economizer, other alterations shall comply with Table 11-1, except for approved longterm plans that comply with
the 2002 Seattle Energy Code and were submitted prior to 1 July 2004.
TABLE 11-1:
ECONOMIZER COMPLIANCE OPTIONS FOR MECHANICAL ALTERATIONS
Option A Option B Option C Option D (alternate to A) (alternate to A) (alternate to A)
Unit .fv Any Replacement Replacement New Type alteration unit of the same unit of the same equipment added with new or type type to existing replacement
with the same or with a larger system or equipment smaller output output capacity replacement capacity unit of a
different type
Efficiency: Efficiency: Efficiency: Efficiency: Packaged min.1 min.1 min.1 min.1 Units Economizer: Economizer: Economizer: Economizer: 14332 1433 2,3
14332,3 14332,4
Split Efficiency: Efficiency: + Only for new Efficiency: Systems min.1 10/5%5 units min.1 Economizer: Economizer: shall < 54,000 Btuh Economizer: 14332 not
decrease replacing unit 14332,4 existing installed prior economizer to 1991 (one of capability two):
Efficiency: + 10/5%5 Economizer: 50%6
For units > 54,000 Btuh or any units installed after 1991:
Option A
Water Efficiency: (two of (three of Efficiency: Source min.1 three): three): min.1 Heat Pump Economizer: Efficiency: + Efficiency: + Economizer: 14332
10/5%5 10/5%5 14332,4 Flow control Flow control (except for valve7 valve7 certain Economizer: 50%6
Economizer: 50%6 pre-1991 (except for systems8) certain pre-1991 systems8)
Efficiency: Efficiency: + Option A Efficiency: Hydronic min.1 10/5%5 min.1 Economizer Economizer: Economizer: shall Economizer: using 14332 not
decrease 14332,4 Air-Cooled existing Heat economizer Rejection capacity Equipment (Dry Cooler)
Efficiency: Economizer: Option A Option A Air-Handling min.1 shall not (except for (except for Unit Economizer: decrease existing certain pre-1991 certain (including 14332 economizer
systems8) pre-1991 fan coil capacity systems8) units) where the system has an air-cooled chiller
Efficiency: Economizer: Option A Efficiency: Air-Handli min.1 shall not (except for min.1 ng Unit Economizer: decrease existing certain pre-1991 Economizer: (including 14332
economizer systems8 and 14332,4 fan coil capacity certain 1991-2004 (except for units) systems9.) certain and
pre-1991 Water-cool systems8 and ed certain Process 1991-2004
Equipment, systems9) where the system has a water-cool ed chiller10
Efficiency: No Option A Option A Cooling min.1 requirements Tower Economizer: 14332
Efficiency: Efficiency: + Efficiency Efficiency: Air-Cooled min.1 5%11 (two of two): min.1 Chiller Economizer: Economizer: shall (1) + 10%12 and Economizer: 14332 not decrease
(2) multistage 14332,4 existing Economizer: shall economizer not decrease capacity existing
economizer capacity
Efficiency: Efficiency Efficiency Efficiency: Water-Cool min.1 (one of two): (two of two): min.1 ed Economizer: (1) + 10%13or (1) + 15%14 and Economizer: Chiller 14332 (2) plate frame
(2) plate-frame 14332,4 heat exchanger15 heat exchanger15 Economizer: shall Economizer: shall not decrease not decrease
existing existing economizer economizer capacity capacity
Boiler Efficiency: Efficiency: + Efficiency: + Efficiency: min.1 8%16 8%16 min.1 Economizer: Economizer: shall Economizer: shall Economizer: 14332
not decrease not decrease 14332,4 existing existing economizer economizer capacity capacity
1. Minimum equipment efficiency shall comply with Section 1411.1 and Tables 14-1A through M.
2. System and building shall comply with Section 1433 (including both the individual unit size limits and the total building capacity limits on units without economizer). It is acceptable to comply using one of the exceptions to Section 1433.
3. All equipment replaced in an existing building shall have air economizer complying with Sections 1413 and 1433 unless both the individual unit size and the total capacity of units without air economizer in the building is less than that allowed in
Exception 1 to Section 1433.
4. All separate new equipment added to an existing building shall have air economizer complying with Sections 1413 and 1433 unless both the individual unit size and the total capacity of units without air economizer in the building is less than that
allowed in Exception 1 to Section 1433.
5. Equipment shall have a capacity-weighted average cooling system efficiency:
a. for units with a cooling capacity below 54,000 Btuh, a minimum of 10% greater than the requirements in Tables 14-1A and 14-1B (1.10 x values in Tables 14-1A and 14-1B).
b. for units with a cooling capacity of 54,000 Btuh and greater, a minimum of 5% greater than the requirements in Tables 14-1A and 14-1B (1.05 x values in Tables 14-1A and 14-1B.
6. Minimum of 50% air economizer that is ducted in a fully enclosed path directly to every heat pump unit in each zone, except that ducts may terminate within 12 inches of the intake to an HVAC unit provided that they are physically fastened so that
the outside air duct is directed into the unit intake. If this is an increase in the amount of outside air supplied to this unit, the outside air supply system shall be capable of providing this additional outside air and equipped with economizer
control.
7. Have flow control valve to eliminate flow through the heat pumps that are not in operation with variable speed pumping control complying with Section 1432.2.2 for that heat pump. Effective 1 July 2005, if not already installed, variable frequency
drive shall be installed on the main loop pump at this time regardless of the pump size. As an alternate to this requirement, have a capacity-weighted average cooling system efficiency that is 5% greater than the requirements in note 5 (i.e. a minimum
of 15%/10% greater than the requirements in Tables 14-1A and 14-1B (1.15/1.10 x values in Tables 14-1A and 14-1B.
8. Systems installed prior to 1991 without fully utilized capacity are allowed to comply with Option B, provided that the individual unit cooling capacity does not exceed 90,000 Btuh.
9. Economizer not required for systems installed with water economizer plate and frame heat exchanger complying with previous codes between 1991 and June 2004, provided that the total fan coil load does not exceed the existing or added capacity of the
heat exchangers.
10. For water-cooled process equipment where the manufacturers specifications require colder temperatures than available with waterside economizer, that portion of the load is exempt from the economizer requirements.
11. The air-cooled chiller shall have an IPLV efficiency that is a minimum of 5% greater than the IPLV requirements in Table 14-1C (1.05 x IPLV values in Table 14-1C).
12. The air-cooled chiller shall:
13. The water-cooled chiller shall have an NPLV efficiency that is a minimum of 10% greater than the NPLV requirements in Table 14-1K, Table 14-1L, or Table 14-1M (1.10 x NPLV values in Table 14-1K, Table 14-1L, or Table 14-1M).
14. The water-cooled chiller shall have an NPLV efficiency that is a minimum of 15% greater than the NPLV requirements in Table 14-1K, Table 14-1L, or Table 14-1M (1.15 x NPLV values in Table 14-1K, Table 14-1L, or Table 14-1M)..
15. Economizer cooling shall be provided by adding a plate-frame heat exchanger on the waterside with a capacity that is a minimum of 20% of the chiller capacity at standard ARI rating conditions.
16. The replacement boiler shall have an efficiency that is a minimum of 8% higher than the value in Table 14-1F (1.08 x value in Table 141F), except for electric boilers.
Section 7. Section 1132.3 of the 2003 Washington State Energy Code is amended as follows:
1132.3 Lighting and Motors: Where the use in a space changes from one use in Table 15-1 to another use in Table 15-1, the installed lighting wattage shall comply with Section 1521 or 1531.
Where new wiring is being installed to serve added fixtures and/or fixtures are being relocated to a new circuit (except as noted in the following paragraph), controls shall comply with Sections 1513.1 through 1513.5 and 1513.7. For compliance with Section 1513.3.2 for existing luminaires where the existing ballasts are not being changed, the number of required incremental steps of automatic daylighting control shall be equal to one plus the number of ballasts in the luminaire. In addition, office areas less than 300 ft2 enclosed by walls or ceiling-height partitions, and all meeting and conference rooms, and all school classrooms, shall be equipped with occupancy sensors that comply with Section 1513.6. Where a new lighting panel (or a moved lighting panel) with all new raceway and conductor wiring from the panel to the fixtures is being installed, controls shall also comply with the other requirements in Section 1513.6.
Where new walls or ceiling height partitions are added to an existing space and create a new enclosed space, but the lighting fixtures are not being changed, other than being relocated, the new enclosed space shall have controls that comply with
Sections 1513.1 through 1513.2 and 1513.4 through 1513.7.
Section 8. Section 1133 of the 2003 Washington State Energy Code is amended as follows: 1133 Change of Occupancy or Use: Changes of occupancy or use shall comply with the following requirements:
a. Any unconditioned space that is altered to become semi-heated, cooled, or fully heated, or any semi-heated space that is altered to become cooled or fully heated space shall be required to be brought into full compliance with this Code. For
spaces constructed prior to this Code, the installed heating output capacity shall not exceed 16 Btu/h per square foot unless the building envelope complies with the requirements of Chapter 13. Existing warehouses and repair shops are considered
unconditioned space unless they are indicated as conditioned space in DPD records or they were built after 1980 and they comply with the building envelope requirements for conditioned space in effect at the time of construction. (See the Seattle
Mechanical Code for requirements for combustion appliances.)
Section 9. Section 1144 of the 2003 Washington State Energy Code is amended as follows:
1144 Violations and Penalties Section 10. The Energy Code is amended by adding new Sections 1144.1, 1144.2, 1144.3, 1144.4, 1144.5, 1144.6, and 1144.7 to read as follows: 1144.1 Violations: It shall be a violation of this Code for any person, firm or corporation to erect, construct, enlarge, repair, move, improve, remove, convert, demolish, equip, occupy, inspect or maintain any building or structure in the City, contrary to or in violation of any of the provisions of this Code. It shall be a violation of this Code for any person, firm or corporation to knowingly aid, abet, counsel, encourage, hire, commend, induce or otherwise procure another to violate or fail to comply with this Code. It shall be a violation of this Code for any person, firm, or corporation to use any material or to install any device, appliance or equipment which does not comply with the applicable standards of this Code or which has not been approved by the building official. 1144.2 Notice of Violation: If after investigation the building official determines that standards or requirements of this code have been violated, the building official may serve a notice of violation upon the owner or other person responsible for the action or condition. The notice of violation shall state the standards or requirements violated, shall state what corrective action, if any, is necessary to comply with the standards or requirements, and shall set a reasonable time for compliance. The notice shall be served upon the owner or other responsible person by regular first class mail addressed to the last known address of such person. In addition, a copy of the notice may be posted at a conspicuous place on the property. The notice of violation shall be considered an order of the building official. Nothing in this subsection shall be deemed to limit or preclude any action or proceeding pursuant to Sections 102, 103 or 104 of the Seattle Building Code, and nothing in this section shall be deemed to obligate or require the building official to issue a notice of violation prior to the imposition of civil or criminal penalties in this section. 1144.3 Civil Penalties: Any person, firm or corporation failing to comply with the provisions of this code shall be subject to a cumulative civil penalty in an amount not to exceed $500 per day for each violation from the date the violation occurs or begins until compliance is achieved. In cases where the building official has issued a notice of violation, the violation will be deemed to begin, for purposes of determining the number of days of violation, on the date compliance is required by notice of violation. In any civil action for a penalty, the City has the burden of proving by a preponderance of the evidence that a violation exists or existed; the issuance of the notice of violation or of an order following a review by the Director is not itself evidence that a violation exists. 1144.4 Criminal Penalty: Any person who violates or fails to comply with this chapter shall be guilty of a gross misdemeanor subject to the provisions of Chapters 12A.02 and 12A.04, except that absolute liability shall be imposed for such a violation or failure to comply and none of the mental states described in Section 12A.04.030 need be proved. The Director may request the City Attorney prosecute such violations criminally as an alternative to the civil penalty provision outlined in this code. Each day any person, firm or corporation shall continue to violate or fail to comply with the provisions of this chapter and each occurrence of a prohibited activity shall constitute a separate offense. 1144.5 Additional Relief: The building official may seek legal or equitable relief to enjoin any acts or practices and abate any condition which constitutes a violation of this code when civil or criminal penalties are inadequate to effect compliance. In any such action, the City has the burden of proving by a preponderance of the evidence that a violation exists or will exist; the issuance of the notice of violation or of an order following a review by the Director is not itself evidence that a violation exists or will exist. 1144.6 Notices: It shall be unlawful for any person to remove, mutilate, destroy or conceal any notice issued or posted by the building official pursuant to the provisions of this code, or any notice issued or posted by the building official in response to a natural disaster or other emergency. The building official may record a copy of any order or notice with the Department of Records and Elections of King County. The building official may record with the Department of Records and Elections of King County a notification that a permit has expired without a final inspection after reasonable efforts have been made to provide a final inspection. 1144.7 Review by the Director 1144.7.1. Any person affected by a notice of violation issued by the Director pursuant to Section 1144.2 may obtain a review of the notice by requesting such review in writing within ten days after service of the notice. When the last day of the period computed is a Saturday, Sunday, federal or City holiday, the period shall run until 5:00 p.m. of the next business day. Upon receipt of a request, the Director shall notify the person requesting the review of the date, time, and place of the Director's review. The review shall be not less than ten nor more than twenty days after the request is received, unless otherwise agreed by the person requesting the review. Any person affected by the notice of violation may submit any written material to the Director on or before the date of the review. 1144.7.2. The review will consist of an informal review meeting held at the Department. A representative of the Director who is familiar with the case and the applicable regulations will attend. The Director's representative will consider any information presented by the persons attending and in the Department's enforcement file. At or after the review, the Director shall issue an order of the Director that may: 1. Sustain the notice of violation; or 2. Withdraw the notice of violation; or 3. Continue the review to a future date; or 4. Amend the notice of violation. 1144.7.3. The Director shall issue an order of the Director within a reasonable time after the conclusion of the review. The Director shall mail the order by regular first-class mail to the person or persons named in the notice of violation. Section 11. Section 1150 of the 2003 Washington State Energy Code is amended as follows: 1150 Conflicts with Other Codes: In case of conflicts among Codes enumerated in RCW 19.27.031 subsections (1), (2), (3) and (4) and this Code, the first named Code shall govern. The duct insulation requirements in this Code or a local jurisdiction's energy code, whichever is more stringent, supersede the requirements in the Uniform Mechanical Code.
This Code is intended to supplement the provisions of the Seattle Building Code, the Seattle Mechanical Code, and the Seattle Electrical Code, and in cases of conflict between this Code and any of those codes, the provisions of those codes shall
apply.
Additional efficiency standards for electrical energy use may also appear in Seattle City Light service requirements, which should be consulted. Where, in any specific case, different sections of this Code specify different materials, methods of construction or other requirements, the most restrictive shall govern. Where there is a conflict between a general requirement and a specific requirement, the specific requirement shall be applicable. Section 12. Section 1161 of the 2003 Washington State Energy Code is amended as follows: 1161 Severability: If any provision of this Code or its application to any person or circumstance is held invalid, the remainder of this Code or the application of the provision to other persons or circumstances is not affected.
The legislative body hereby declares that it would have passed this Code, and each section, subsection, clause or phrase thereof, irrespective of the fact that any one or more sections, subsections, sentences, clauses, and phrases be declared
unconstitutional.
1162 Liability: Nothing contained in this Code is intended to be nor shall be construed to create or form the basis for any liability on the part of Section 14. Section 1301 of the 2003 Washington State Energy Code is amended as follows: 1301 Scope: Conditioned buildings or portions thereof shall be constructed to provide the required thermal performance of the various components according to the requirements of this chapter. Unless otherwise approved by the building official, all spaces shall be assumed to be at least semi-heated. EXCEPTIONS: 1. Greenhouses isolated from any conditioned space and not intended for occupancy. 2. As approved by the building official, spaces not assumed to be at least semi-heated. 3. Unconditioned Group U occupancy accessory to Group R occupancy. 4. Unstaffed equipment shelters or cabinets used solely for personal wireless service facilities.
5. Parking lot attendant booths no larger than 100 square feet, provided that the roof insulation is R-21 minimum and the wall insulation is R-13 minimum, unless otherwise allowed by Section 1310.
Section 15. Section 1310 of the 2003 Washington State Energy Code is amended as follows: 1310 General Requirements. The building envelope shall comply with Sections 1311 through 1314.
a. Prescriptive Building Envelope Option Sections 1320 through 1323. b. Component Performance Building Envelope Option Sections 1330 through 1334. c. Systems Analysis. See Section 1141.4.
EXCEPTION: For semi-heated spaces heated by other fuels only, wall insulation is not required for those walls that separate semi-heated spaces (see definition in Section 201.1) from the exterior provided that the space is heated solely by a
heating system controlled by a thermostat with a maximum setpoint capacity of 45 degrees F, mounted no lower than the heating unit.
Climate Zone 1
Section 16. Section 1311.6 of the 2003 Washington State Energy Code is amended as follows: 1311.6 Radiant Floors (on or below grade): Slab on grade insulation shall extend downward from the top of the slab a minimum distance of 36 inches or downward to the top of the footing and horizontal for an aggregate of not less that 36 inches.
Section 17. Section 1312.2 of the 2003 Washington State Energy Code is amended as follows:
1312.2 Solar Heat Gain Coefficient and
EXCEPTIONS: 1. Shading coefficients (SC) or solar heat gain coefficient for the center of glass shall be an acceptable alternate for compliance with solar heat gain coefficient requirements.
Shading coefficients or solar heat gain coefficient for the center of glass for glazing shall be taken from Chapter 30 of Standard RS-1 or from the manufacturer's
2. For the purposes of 1323, Exception 1, visible transmittance for the center of the glazing assembly shall be taken from Chapter 30 of Standard RS-1 or from the manufacturer's data using a spectral data file determined in accordance with NFRC
300.
Note that using the exception for the SHGC for the center-ofglass does not give the full credit for the overall product (including the frame) that the NFRC-certified SHGC does. Though the SHGC for the frame is not zero (the ASHRAE Handbook of
Fundamentals indicates that the SHGC can range from 0.11-0.14 for metal frames and from 0.02-0.07 for wood/vinyl/fiberglass frames), the SHGC for the frame is invariable lower than that for the glass. Consequently, an NFRCcertified SHGC will generally
be lower.
1322 Opaque Envelope: Roof/ceilings, opaque exterior walls, opaque doors, floors over unconditioned space, below grade walls, slab on grade floors and radiant floors enclosing conditioned spaces shall be insulated according to Section 1311 and Tables 13-1or 13-2. Compliance with nominal R-values shall be demonstrated for the thermal resistance of the added insulation in framing cavities and/or insulated sheathing only. Nominal R-values shall not include the thermal transmittance of other building materials or air films. For metal frame assemblies used in spaces with electric resistance space heat, compliance shall be demonstrated with the component Ufactor for the overall assembly based on the assemblies in Chapter 10.
Area-weighted averaging of the R-value is not allowed. When showing compliance with R-values, the minimum insulation R-value for all areas of the component shall comply with Table 13-1. When calculating compliance using U-factors,
area-weighted averaging is allowed. Where insulation is tapered (e.g. roofs), separate assembly U-factors shall be calculated for each four-foot section of tapered insulation.
1. Opaque smoke vents are not required to meet insulation requirements.
2. For prescriptive compliance only,
3. For roofs with continuous rigid insulation on the top of the roof, the insulation R-value may be averaged for compliance with minimum prescriptive R-values only, provided that both:
Section 19. Section 1323 of the 2003 Washington State Energy Code is amended as follows: 1323 Glazing: Glazing shall comply with Section 1312 and Tables 13-1 or 13-2. All glazing shall be, at a minimum, double glazing. In addition, all glazing assemblies shall have at least one lowemissivity coating unless the glazing assembly has an overall U-factor that complies with the values in Table 13-1. EXCEPTIONS: 1. Vertical glazing located on the display side of the street level story of a retail occupancy or where there is a street level transparency requirement in the Seattle Land Use Code provided the glazing a. (i) is double-glazed with a minimum 1/2 inch airspace and with a low-e coating having a maximum emittance of e-0.40 in any type of frame or (ii) has an area-weighted U-factor of 0.60 or less.
U-factor calculations shall use overall assembly U-factors. When this exception is used there are no SHGC requirements) and
When this exception is utilized, separate calculations shall be performed for these sections of the building envelope and these values shall not be averaged with any others for compliance purposes. The 75% area may be exceeded on the street level, if the additional glass area is provided from allowances from other areas of the building. 2. Single glazing for ornamental, security, or architectural purposes shall be included in the percentage of total glazing area, Ufactor calculation and SHGC as allowed in the Tables 13-1 or 13-2. The maximum area allowed for the total of all single glazing is 1% of the gross exterior wall area. Section 20. Section 1323.3 of the 2003 Washington State Energy Code is amended as follows: 1323.3 Solar Heat Gain Coefficient: The area-weighted average solar heat gain coefficient of all glazing shall not be greater than that specified in Tables 13-1 or 13-2 for the appropriate area and Ufactor.
EXCEPTIONS:
Projection SHGC SHGC Factor Multiplier Multiplier (All Orientations (North-Oriented except ) North-oriented)
0 0.10 1.00 1.00
<0.10 0.91 0.95 0.20
<0.20 0.82 0.91 0.30
<0.30 0.74 0.87 0.40
<0.40 0.67 0.84 0.50
<0.50 0.61 0.81 0.60
<0.60 0.56 0.78 0.70
<0.70 0.51 0.76 0.80
<0.80 0.47 0.75 0.90
<0.90 0.44 0.73 1.00
Exhibit 1323.3
Section 21. Section 1331 of the 2003 Washington State Energy Code is amended as follows: 1331 General: Buildings or structures whose design heat loss rate (UAp) and solar heat gain coefficient rate (SHGC * Ap) are less than or equal to the target heat loss rate (UAt) and solar heat gain coefficient rate (SHGC * At) shall be considered in compliance with this section. The stated U-factor, F-factor or allowable area of any component assembly, listed in Tables 13-1 or 13-2, such as roof/ceiling, opaque wall, opaque door, glazing, floor over conditioned space, slab on grade floor, radiant floor or opaque floor may be increased and the U-factor or F-factor for other components decreased, provided that the total heat gain or loss for the entire building envelope does not exceed the total resulting from compliance to the U-factors, F-factors or allowable areas specified in this section.
EXCEPTIONS:
1. Compliance is also allowed to be shown using RS-32.
Section 22. Section 1333 of the 2003 Washington State Energy Code is amended as follows: 1333 UA Calculations: The target UAt and the proposed UAp shall be calculated using Equations 13-1 and 13-2 and the corresponding areas and U-factors from Table 13-1 or 13-2. For the target UAt calculation, the overhead glazing shall be located in roof/ceiling area and the remainder of the glazing allowed per Table 13-1 or 13-2 shall be located in the wall area. Where insulation is tapered, separate assembly U-factors shall be calculated in accordance with Section 1322. Section Table 13-1 of the 2003 Washington State Energy Code is amended as follows: TABLE 13-1 BUILDING ENVELOPE REQUIREMENTS FOR CLIMATE ZONE 1 MINIMUM INSULATION R-VALUES OR MAXIMUM COMPONENT U-FACTORS FOR ZONE 1 Building Components Space Components Heat Type Roofs All Opaque Walls1,2 Opaque Floor Slab Over Other Over On Attic3 Roofs3 Doors Uncond Grade5 Space 1. R-38 or R-30 R-19 or U=0.60 R-30 or R-10 Electric U=0.031 or U=0.062 U=0.029 or resistance U=0.034 F=0.54 heat**
2. All R-30 or R-21 ** Compliance with nominal prescriptive R-values requires wood framing. MAXIMUM GLAZING AREAS AND U-FACTORS AND MAXIMUM GLAZING SOLAR HEAT GAIN COEFFICIENTS FOR ZONE 1 Glazing
Space Heat Type Maximum Glazing Area as % of Wall
0% to 20% >20% to 30% >30% to 45%
Maximum Max. Maximum Max. Maximum Max. U-Factor SHGC4 U-Factor SHGC4 U-Factor SHGC4
VG OG VG OG VG OG
1. Electric PRESCRIPTIVE resistance heat7 0.40 0.48 0.40 0.40 0.48 0.30 PATH NOT ALLOWED
Prescriptive only, not for Target UA or annual energy analysis
2. All others including 0.55 0.66 0.40 0.55 0.66 0.40 0.45 0.54 0.40 heat pumps and VAV6
Maximum Max. Maximum Max. Maximum Max. Maximum Max. U-Factor SHGC4 U-Factor SHGC4 U-Factor SHGC4 U-Factor SHGC4
VG OG VG OG VG OG VG OG
1. Electric PRESCRIPTIVE PATH NOT resistance heat 0.40 0.80 1.0 0.40 0.80 1.0 ALLOWED
2. All others 0.90 1.45 1.0 0.75 1.40 1.0 0.60 1.30 0.65 0.50 1.25 0.45 including heat pumps and VAV Footnotes 1. Below Grade Walls: When complying by the prescriptive approach, Section 1322: a) walls insulated on the interior shall use opaque wall values, b) walls insulated on the exterior shall use a minimum of R-10 insulation,
c) walls shall be insulated for the first 10 feet below grade. (There shall be no credit for insulating those portions of below grade walls and footings that are more than 10 feet below grade, and those portions below 10 feet
shall not be included in the gross exterior wall area When complying by the component performance approach, Section 1331: a) walls insulated on the interior shall use the opaque wall values when determining Ubgwt , b) walls insulated on the exterior shall use a target U-factor of U=0.070 for Ubgwt ,
c) the calculations shall include the first 10 feet of walls below grade. (
2. Concrete Masonry Walls: If the area weighted heat capacity of the total opaque above grade wall is a minimum of 9.0 Btu/ft2 ( degrees F, then the U-factor may be increased to a) 0.11 for interior insulation i) minimum R-11 insulation between wood studs; or
ii) minimum R-19 insulation between metal studs; or
b) 0.12 for integral and exterior insulation for insulation position as defined in Chapter 2.
i) minimum additional R-7 continuous insulation uninterrupted by framing.
Individual walls with heat capacities less than 9.0 Btu/ft2 ( degrees F and below grade walls shall meet opaque wall requirements listed above.
Glazing shall comply with the glazing requirements listed above.
Maximum Max. Maximum Max. Maximum Max. Maximum Max. U-Factor SHGC4 U-Factor SHGC4 U-Factor SHGC4 U-Factor SHGC4
VG OG VG OG VG OG VG OG
1. Electric NOT ALLOWED resistance heat 0.40 0.80 1.00 0.40 0.80 1.00 0.40 0.80 1.00
2. All others 0.90 1.45 1.00 0.75 1.40 1.00 0.65 1.30 0.80 0.60 1.30 0.65 including heat pumps and VAV
3. 4. SHGC (Solar Heat Gain Coefficient per Section 1312.2): May substitute Maximum Shading Coefficient (SC) for SHGC (See Chapter 2 for definition of Shading Coefficient). 5. Radiant Floors: Where insulation is required under the entire slab, radiant floors shall use a minimum of R-10 insulation or F=0.55 maximum. Where insulation is not required under the entire slab, radiant floors shall use R-10 perimeter insulation according to Section 1311.6 or F=0.78 maximum.
6. Prescriptive Alternate (not applicable to Target UA or annual energy analysis): For the prescriptive building envelope option only, for other than electric resistance heat only, glazing may comply with the following:
7. Prescriptive Alternate for Electric Resistance Space Heat (not applicable to Target UA or annual energy analysis):
Section 24. Section 1402 of the 2003 Washington State Energy Code is amended as follows:
1402 Mechanical Ventilation: The minimum requirements for ventilation shall comply with the Section 25. Section 1411.1 of the 2003 Washington State Energy Code is amended as follows: 1411.1 General: Equipment shall have a minimum performance at the specified rating conditions not less than the values shown in Tables 14-1A through 14-1G. If a nationally recognized certification program exists for a product covered in Tables 14-1A through 14-1G, and it includes provisions for verification and challenge of equipment efficiency ratings, then the product shall be listed in the certification program.
EXCEPTION: Water-cooled water-chilling packages that are not designed for operation at ARI Standard 550/590 test conditions (and thus cannot be tested to meet the requirements of Table 14-1C) of 44(F leaving chilled water temperature and 85(F
entering condenser water temperature shall have a minimum NPLV rating as shown in Tables 14-1K, L, and M. The table values are only applicable over the following full load design ranges:
Chillers designed to operate outside of these ranges are not covered by this Code. Non-standard Part Load Value (NPLV) is defined as single number part-load efficiency figure of merit for chillers references to conditions other than IPLV conditions.
Design condenser water flow rate shall not be less than 2.5 gpm/ton.
Electric furnaces over 15 kW shall have a minimum of two stages of control for heating.
Hydronic heat pump and other cooling and refrigeration equipment (e.g. icemakers, walk-in coolers) shall not use domestic water only one time before dumping it to waste (no single pass water cooling systems are allowed). The only exceptions
are: medical and dental equipment; equipment using less than 1 gpm; replacement of existing icemakers; or use of single pass cooling during power outages and other emergencies.
1411.2 Rating Conditions: Cooling equipment shall be rated at ARI test conditions and procedures when available. Where no applicable procedures exist, data shall be furnished by the equipment manufacturer.
If equipment is rated in accordance with an ARI Standard,
it shall be rated at Standard (not "design") ARI Rating Conditions.
1411.4 Packaged and Split System Electric Heating and Cooling Equipment: Packaged and split system electric equipment providing both heating and cooling with a total cooling capacity greater than 20,000 Btu/h shall be a heat pump. EXCEPTION: Unstaffed equipment shelters or cabinets used solely for personal wireless service facilities. Section 28. The 2003 Washington State Energy Code is amended by adding a new Section 1411.5 to read as follows: 1411.5 Heating Systems in Unenclosed Spaces. Where heating is provided to unenclosed spaces, only radiant heating systems shall be used unless otherwise approved by the building official. An unenclosed space is one that is not substantially surrounded by solid surfaces such as walls, floors, roofs, and openable devices such as doors and operable windows. Warehouses and repair garages are considered enclosed spaces. Section 29. Section 1412.2 of the 2003 Washington State Energy Code is amended as follows: 1412.2 Deadband Controls: When used to control both comfort heating and cooling, zone thermostatic controls shall be capable of a deadband of at least 5 degrees F within which the supply of heating and cooling energy to the zone is shut off or reduced to a minimum. EXCEPTIONS: 1. Special occupancy, special usage or code requirements where deadband controls are not appropriate.
2. 3. Thermostats that require manual changeover between heating and cooling modes. Section 30. Section 1412.4 of the 2003 Washington State Energy Code is amended as follows: 1412.4 Setback and Shut-Off: HVAC systems shall be equipped with automatic controls capable of accomplishing a reduction of energy use through control setback or equipment shutdown during periods of nonuse or alternate use of the spaces served by the system. The automatic controls shall
a. have a minimum seven-day clock and be capable of being set for seven different day types per week,
EXCEPTIONS: 1. Systems serving areas which require continuous operation at the same temperature setpoint. 2. Equipment with full load demands of 2 kW (6,826 Btu/h) or less may be controlled by readily accessible manual off-hour controls.
3. Systems controlled by an occupant sensor that is capable of shutting the system off when no occupant is sensed for a period of up to 30 minutes.
1412.4.1 Dampers: Outside air intakes, exhaust outlets and relief outlets serving conditioned spaces shall be equipped with motorized dampers which close automatically when the system is off or upon power failure. Stair shaft and elevator shaft smoke relief openings shall be equipped with normally open (fails open upon loss of power) dampers. These dampers shall remain closed until activated by the fire alarm system or other approved smoke detection system. EXCEPTIONS: 1. Systems serving areas which require continuous operation. 2. Combustion air intakes. 3. Gravity (non-motorized) dampers are acceptable in buildings less than 3 stories in height. 4. Gravity (non-motorized) dampers are acceptable in exhaust and relief outlets in the first story and levels below the first story of buildings three or more stories in height. Dampers installed to comply with this section, including dampers integral to HVAC equipment, shall have a maximum leakage rate when tested in accordance with AMCA Standard 500 of: a. Motorized dampers: 10 cfm/ft2 of damper area at 1.0 in w.g. b. Non-motorized dampers: 20 cfm/ft2 of damper area at 1.0 in w.g., except that for non-motorized dampers smaller than 24 inches in either dimension: 40 cfm/ft2 of damper area at 1.0 in w.g. Dampers used as a component of packaged HVAC equipment shall comply with the damper leakage requirements, unless it is the lowest leakage available as a factory option. Drawings shall indicate compliance with this section. 1412.4.2 Optimum Start Controls: Heating and cooling systems with design supply air capacities exceeding 10,000 cfm shall have optimum start controls. Optimum start controls shall be designed to automatically adjust the start time of an HVAC system each day to bring the space to desired occupied temperature levels immediately before scheduled occupancy. The control algorithm shall, as a minimum, be a function of the difference between space temperature and occupied setpoint and the amount of time prior to scheduled occupancy. Section 31. Section 1412.6 of the 2003 Washington State Energy Code is amended as follows:
1412.6 Combustion Heating Equipment Controls: Combustion heating equipment with a capacity over 225,000 Btu/h shall have modulat EXCEPTIONS: 1. Boilers under 1,000,000 Btu/h input capacity. 2. Radiant Heaters.
3. Systems with multiple boilers which are sequentiallystaged.
Boilers shall comply with the reset requirements in Section 1432.2.
Section 32. The 2003 Washington State Energy Code is amended by adding a new Section 1412.8 to read as follows: 1412.8 Enclosed Parking Garage Ventilation: Garage ventilation fan systems with a total capacity greater than 30,000 cfm shall include the equipment specified in (a) and (b) below. Smaller systems shall include the equipment specified in either (a) or (b). a. An automatic control that is capable of staging fans or modulating fan speed as required to maintain carbon monoxide (CO) concentration below a level of 50 ppm as stated in ASHRAE Standard 62. This provision only applies to garages used predominantly by gasoline powered vehicles. b. An automatic control that is capable of shutting off fans or reducing fan speed during periods when the garage is not in use. The system shall be equipped with at least one of the following: i. An automatic timeclock that can start and stop the system under different schedules for seven different day-types per week, is capable of retaining programming and time setting during loss of power for a period of at least 10 hours, and includes an accessible manual override that allows temporary operation of the system for up to 2 hours. ii. An occupant sensor. See the Seattle Building Code for sizing requirements for parking garage ventilation. See the Seattle Mechanical Code, Section 404.1, for other requirements for parking garage ventilation. Section 33. The 2003 Washington State Energy Code is amended by adding a new Section 1412.9 to read as follows: 1412.9 Ventilation Controls for High-Occupancy Areas (Demand Ventilation Controls). The following systems shall incorporate means to automatically reduce outside air intake below design rates when spaces are unoccupied or partially occupied (demand ventilation controls): a. Single-zone systems where all of the following criteria are met: (1) an air economizer is installed to comply with Sections 1413 and either 1423 or 1433, and (2) design outside airflow is greater than 1,200 cfm, and (3) design occupancy of the spaces served by the system is greater than 40 people per 1,000 ft2 of floor area. b. All other single-zone where both of the following criteria are met: (1) design outside airflow is greater than 3,000 cfm, and (2) design occupancy of the spaces served by the system is greater than 40 people per 1,000 ft2 of floor area. c. Multiple-zone where both of the following criteria are met: (1) design outside airflow is greater than 3,000 cfm, and (2) design occupancy averaged over all of the spaces served by the system is greater than 100 people per 1,000 ft2 of floor area. The demand ventilation control system shall have CO2 sensors installed in each room where the design occupancy is greater than 40 people per 1,000 ft2 of floor area for single-zone systems and where the design occupancy is greater than 100 people per 1,000 ft2 of floor area for multiple-zone systems. The CO2 sensors shall be located between one foot and six feet above the floor. Ventilation controls shall be in compliance with ASHRAE Standard 62 and the Seattle Mechanical Code. Demand ventilation controls shall maintain CO2 concentrations less than or equal to 600 ppm plus the outdoor air CO2 concentration in all rooms with CO2 sensors. EXCEPTION: The outdoor air ventilation rate is not required to be larger than the design outdoor air ventilation rate required by the Seattle Mechanical Code regardless of CO2 concentration. The outdoor air CO2 concentration shall be assumed to be 400 ppm without any direct measurement or the CO2 concentration shall be dynamically measured using a CO2 sensor located near the position of the outdoor air intake. When the system is operating during hours of expected occupancy, the controls shall maintain system outdoor air ventilation rates no less than the rate listed in the Seattle Mechanical Code for spaces with CO2 sensors. CO2 sensors shall be certified by the manufacturer to have an accuracy of no less than 75 ppm, factory calibrated or calibrated at start-up, and certified by the manufacturer to require calibration no more frequently than once every 5 years. Section 34. Section 1413.1 of the 2003 Washington State Energy Code is amended as follows: 1413.1 Operation: Air economizers shall be capable of automatically modulating outside and return air dampers to provide 100% of the design supply air as outside air to reduce or eliminate the need for mechanical cooling. Air economizers shall be used for RS29 analysis base case for all systems without exceptions in Sections 1413, 1423, or 1433. Water economizers shall be capable of providing the total concurrent cooling load served by the connected terminal equipment lacking airside economizer, at outside air temperatures of 45(F dry-bulb/40(F wet-bulb and below. For this calculation, all factors including solar and internal load shall be the same as those used for peak load calculations, except for the outside temperatures.
Section 35. Section 1413.3 of the 2003 Washington State Energy Code is amended as follows: 1413.3 Integrated Operation: The HVAC system and its controls shall allow economizer operation when mechanical cooling is required simultaneously. Air and water economizers shall be capable of providing partial cooling even when additional mechanical cooling is required to meet the remainder of the cooling load. EXCEPTIONS: 1. Individual, direct expansion units that have a rated cooling capacity less than 65,000 Btu/h and use nonintegrated economizer controls that preclude simultaneous operation of the economizer and mechanical cooling. 2. Water cooled water chillers with waterside economizer. Section 36. The 2003 Washington State Energy Code is amended by adding a new Section 1413.5 to read as follows: 1413.5 Economizer Heating System Impact: Any HVAC system that increases the building heating energy use during economizer operation is not allowed (e.g. single-fan/dual-duct systems and multizone systems). EXCEPTIONS: 1. Where the heating is allowed by Section 1435. 2. Water source heat pump systems that comply with Section 1433, Exception 2. Note that single-fan/dual-duct systems and multizone systems do not comply with this requirement. This is because economizer operation lowers the temperature of the air entering the hot deck heating coil, increasing its energy use. In order to use this type of system, a water economizer must be used, or the system must meet one of the economizer exceptions and have neither type of economizer. (Another resolution is to use a dual-fan/dual-duct system where the hot deck fan supplies only return air or return air plus minimum ventilation air.) This requirement will not affect three-deck multizone since they cannot work with an air economizer in any case (it would make the neutral deck a cold deck). An exception to the heating impact is provided for economizers on VAV systems that cause zone level heating to increase due to a reduction in supply air temperature. Reducing supply air temperatures on a cooling-VAV system will reduce fan energy (particularly if the system has a variable speed drive), offsetting the energy lost due to increased reheat energy. See the discussion and diagrams of Section 6.3.1.4 of ASHRAE/IESNA Standard 90.1 in the Users Manual. Section 37. Section 1414.1 of the 2003 Washington State Energy Code is amended as follows:
1414.1 Sealing: Duct work which is designed to operate at pressures above 1/2 inch water column static pressure shall be sealed
1.
2. Static pressure: 3. Static pressure: above 3 inches; seal all transverse joints, longitudinal seams and duct wall penetrations.
All low-pressure supply and return air systems not located entirely within the conditioned space, including the unconditioned side of enclosed stud bays or joist cavities/spaces used to transport air, shall be securely fastened and sealed. Ductwork shall be sealed using welds, gaskets, mastic, or mastic-plus-embedded-fabric tape. Enclosed stud bays or joist cavities/spaces used to transport air shall be sealed using mastic-plus-embedded-fabric tape or, when drywall is used to enclose the air system, drywall mud and tape. Duct tape is not permitted as a sealant on any ducts.
EXCEPTION: Fibrous glass duct systems installed in accordance with standard UL 181A and flexible duct systems installed in accordance with standard UL 181B may use tapes listed for these systems.
Note that longitudinal seams are joints oriented in the direction of airflow. Transverse joints are connections of two duct sections oriented perpendicular to airflow. Duct wall penetrations are openings made by any screw fastener, pipe, rod or wire. All other connections are considered transverse joints, including but not limited to spin-ins, taps and other branch connections, access door frames and jambs, duct connections to equipment. Section 38. Section 1414.2 of the 2003 Washington State Energy Code is amended as follows:
1414.2 Insulation: Ducts and plenums that are constructed and function as part of the building envelope, by separating interior space from exterior space, shall meet all applicable requirements of Chapter 13. These requirements include insulation
installation, moisture control, air leakage, and building envelope insulation levels. 1. connect to the heating or cooling equipment, or 2. are isolated from the exterior with an automatic shut-off damper complying with Section 1412.4.1. Once outside air ducts meet the above listed requirements, any runs within conditioned space shall comply with Table 14-5 requirements. Other ducts and plenums shall be thermally insulated per Table 145. EXCEPTIONS: 1. Within the HVAC equipment. 2. Exhaust air ducts not subject to condensation. 3. Exposed ductwork within a zone that serves that zone Section 39. Section 1416 of the 2003 Washington State Energy Code is amended as follows:
1416 Mechanical Systems Commissioning and Completion Requirements
1416.1 General. Commissioning is a systematic process of verification and documentation that ensures that the selected building systems have been designed, installed, and function properly, efficiently, and can be maintained in accordance with
the contract documents in order to satisfy the building owner's design intent and operational requirements. Drawing notes shall require commissioning and completion requirements in accordance with this section. Drawing notes may refer to
specifications for further requirements.
1416.1.1 Simple Mechanical Systems. For simple mechanical systems, as defined in Section 1421, and for warehouses and semi-heated spaces, commissioning shall include, as a minimum:
1416.1.2 All Other Mechanical Systems. For all other mechanical systems, commissioning shall include, as a minimum:
1416.2 Commissioning Requirements
1416.2.1 General. Drawing notes shall require commissioning in accordance with this section. Drawing notes may refer to specifications for further commissioning requirements.
1416.2.2 Commissioning Plan. The Plan shall require tests mandated by this section be performed and the results recorded. The Plan shall require preparation of preliminary and final reports of test procedures and results as described herein. At a
minimum, the Plan shall identify the following for each test:
1416.2.3 Systems Balancing
1416.2.3.1 General. Construction documents shall require that all HVAC systems be balanced in accordance with generally accepted engineering standards. Air and water flow rates shall be measured and adjusted to deliver final flow rates within 10% of
design rates, except variable flow distribution systems need not be balanced upstream of the controlling device (for example, VAV box or control valve). Construction documents shall require a written balance report be provided to the owner. Drawing
notes may refer to specifications for further systems balancing requirements.
1416.2.3.2 Air Systems Balancing. Air systems shall be balanced in a manner to first minimize throttling losses then, for fans with system power of greater than 1 hp, fan speed shall be adjusted to meet design flow conditions.
1416.2.3.3 Hydronic Systems Balancing: Hydronic systems shall be proportionately balanced in a manner to first minimize throttling losses, then the pump impeller shall be trimmed or pump speed shall be adjusted to meet design flow conditions. Each
hydronic system shall have either the ability to measure pressure across the pump, or test ports at each side of each pump.
1416.2.4 Functional Performance Testing
1416.2.4.1 General. Drawing notes shall require commissioning in accordance with this section. Drawing notes may refer to specifications for further commissioning requirements.
1416.2.4.2 Equipment/Systems Testing. Functional Performance Testing shall demonstrate the correct installation and operation of each component, system, and system-to-system intertie relationship in accordance with approved plans and specifications.
This demonstration is to prove the operation, function, and maintenance serviceability for each of the Commissioned systems. Testing shall include all modes of operation, including:
1416.2.4.3 Controls Testing: HVAC control systems shall be tested to ensure that control devices, components, equipment and systems are calibrated, adjusted and operate in accordance with approved plans and specifications. Sequences of operation
shall be functionally tested to ensure they operate in accordance with approved plans and specifications.
1416.2.5 Post Construction Commissioning
1416.2.5.1 General: Construction documents shall require post construction commissioning be provided to the building owner prior to date of final acceptance. Drawing notes may refer to specifications for further commissioning requirements. Post
construction commissioning shall include, as a minimum, review and approval of Operation and Maintenance Materials, Record Drawings, and Systems Operational Training.
1416.2.5.2 Operation and Maintenance (O & M) Materials: The O&M Materials shall be in accordance with industry accepted standards and shall include, at a minimum, the following:
1416.2.5.3 Record Drawings: Record drawings shall include, as a minimum, the location and performance data on each piece of equipment, general configuration of duct and pipe distribution system, including sizes, and the terminal air and water design
flow rates of the actual installation.
1416.2.5.4 Systems Operational Training: The training of the appropriate maintenance staff for each equipment type and or system shall include, as a minimum, the following:
1416.2.6 Commissioning Reports
1416.2.6.1 General. Drawing notes shall require commissioning in accordance with this section. Drawing notes may refer to specifications for further commissioning requirements.
1416.2.6.2 Preliminary Commissioning Report: A preliminary report of commissioning test procedures and results shall be completed and provided to the Owner. The Preliminary Commissioning Report shall identify:
1416.2.6.3 Final Commissioning Report: A complete report of test procedures and results shall be prepared and filed with the Owner. The Final Commissioning Report shall identify:
1416.3.1 General. Drawing notes shall require commissioning in accordance with this section. Drawing notes may refer to specifications for further commissioning requirements.
1416.3.2 Acceptance: Buildings or portions thereof, required by this Code to comply with this section, shall not be issued a final certificate of occupancy until such time that the building official determines that the preliminary commissioning report
required by Section 1416.2.6.2 has been completed.
1416.3.1 General: Construction documents shall require that all HVAC systems be balanced in accordance with generally accepted engineering standards. Air and water flow rates shall be measured and adjusted to deliver final flow rates within 10% of
design rates, except variable flow distribution systems need not be balanced upstream of the controlling device (for example, VAV box or control valve). Construction documents shall require a written balance report be provided to the owner.
1416.3.2 Air System Balancing: Air systems shall be balanced in a manner to first minimize throttling losses then, for fans with system power of greater than 1 hp, fan speed shall be adjusted to meet design flow conditions.
1416.3.3 Hydronic System Balancing: Hydronic systems shall be proportionately balanced in a manner to first minimize throttling losses, then the pump impeller shall be trimmed or pump speed shall be adjusted to meet design flow conditions. Each hydronic
system shall have either the ability to measure pressure across the pump, or test ports at each side of each pump.
1416.4 Systems Commissioning
1416.4.1 Simple Systems: For simple systems, as defined in Section 1421, and for warehouses and semiheated spaces, HVAC control systems shall be tested to ensure that control devices, components, equipment and systems are calibrated, adjusted and
operate in accord with approved plans and specifications. Sequences of operation shall be functionally tested to ensure they operate in accord with approved plans and specifications. A complete report of test procedures and results shall be prepared and
filed with the owner. Drawing notes shall require commissioning in accordance with this paragraph.
1416.4.2 Other Systems: All other HVAC control systems, and other automatically controlled systems for which energy consumption, performance, or mode of operation are regulated by this code, shall be tested to ensure that control devices, equipment and
systems are calibrated, adjusted and operate in accord with approved plans and specifications. Sequences of operation shall be functionally tested to ensure they operate in accord with approved plans and specifications.
1416.4.2.1 Documentation: Drawing notes shall require commissioning in accordance with this section. Drawing notes may refer to specifications for further commissioning requirements. Plans and specifications shall require tests mandated by this section
be performed and the results recorded. Plans and specifications shall require preparation of preliminary and final reports of test procedures and results as described in 1416.4.2.2. Plans and specifications shall identify the following for each test:
1416.4.2.2 Commissioning Reports
1416.4.2.2.1 Preliminary Commissioning Report: A preliminary commissioning report of test procedures and results shall be prepared. The preliminary report shall identify:
1416.4.2.2.2 Final Commissioning Report: A complete report of test procedures and results shall be prepared and filed with the owner.
1416.4.2.3 Acceptance: Buildings or portions thereof, required by this code to comply with this section, shall not be issued a final certificate of occupancy until such time that the building official determines that the preliminary commissioning report
required by this section has been completed. Section 40. Section 1421 of the 2003 Washington State Energy Code is amended as follows: 1421 System Type: To qualify as a simple system, systems shall be one of the following:
b. Air cooled, constant volume split systems, which provide heating, cooling or both, with cooling capacity of 84,000 Btu/h or less. c. Heating only systems which have a capacity of less than 5,000 cfm or which have a minimum outside air supply of less than 70% of the total air circulation. All other systems shall comply with Sections 1430 through 1439. Section 41. the 2003 Washington State Energy Code is amended by adding a new Section 1421.1 to read as follows: 1421.1 System Sizing Limits: Installed space heating equipment output shall not exceed 16 Btu/h per square foot of gross conditioned floor area and installed space cooling equipment output shall not exceed 25 Btu/h per square foot of gross conditioned floor area. EXCEPTIONS: 1. For equipment which provides both heating and cooling in one package unit, compliance need only be demonstrated for either the space heating or space cooling system size. 2. Equipment sized in accordance with Section 1431.2. Section 42. Section 1423 of the 2003 Washington State Energy Code is amended as follows:
1423 Economizers: Economizers meeting the requirements of Section 1413 shall be installed on single package unitary fan-cooling units having The total capacity of all units without economizers (i.e. these units with a total cooling capacity of 20,000 Btu/h and less) shall not exceed 240,000 Btu/h per building, or 10% of its air economizer capacity, whichever is greater. That portion of the equipment serving Group R occupancy is not included in determining the total capacity of all units without economizers in a building. Section 43. The 2003 Washington State Energy Code is amended by adding a new Section 1431.2 to read as follows: 1431.2 System Sizing Limits: Heating and cooling design loads for the purpose of sizing systems shall be determined in accordance with one of the procedures described in Chapter 29 of Standard RS-1 listed in Chapter 7 or an equivalent computation procedure. For interior temperatures, 70 degrees F shall be used for heating and 75 degrees F for cooling, except where different values are specified in the Washington Administrative Code (WAC). For exterior temperatures, 24 degrees F shall be used for heating and 82 degrees F dry bulb and 66 degrees F for wet bulb for cooling. Building mechanical systems for all buildings which provide space heating and/or space cooling shall be sized no greater than 150% of the design load as calculated above, except that cooling towers shall comply with the sizing requirements in Section 1411.1. No additional safety factor is allowed.
For buildings with a total equipment cooling capacity of 300 tons and above, equipment shall have multiple unloadings or no one unit shall have a capacity of more than 2/3 of the load.
1. For a single piece of equipment which has both heating and cooling capability, only one function, either the heating or the cooling, need meet the requirements of this section. Capacity for the other function shall be, within available equipment options, the smallest size necessary to meet the load. 2. Stand-by equipment may be installed if controls and devices are provided which allow redundant equipment to operate automatically only when the primary equipment is not operating. 3. Multiple units of the same equipment type, such as multiple chillers and boilers, with combined capacities exceeding the design load, or a single unit that is capable of modulating to a part-load capacity of 50% of the load or less, may be specified to operate concurrently only if controls are provided that sequence or otherwise optimally control the operation of each unit based on load. Section 44. Section 1432.2 of the 2003 Washington State Energy Code is amended as follows: 1432.2 Systems Temperature Reset Controls 1432.2.1 Air Systems for Multiple Zones: Systems supplying heated or cooled air to multiple zones shall include controls which automatically reset supply air temperatures by representative building loads or by outside air temperature. Temperature shall be reset by at least 25% of the design supply-air-to-room-air temperature difference. EXCEPTION: Where specified humidity levels are required to satisfy process needs, such as computer rooms or museums.
1432.2.2 Hydronic Systems: Systems with a design capacity of
EXCEPTIONS:
2. Steam boilers.
To limit the heat loss from the heat rejection device (cooling tower), for hydronic heat pumps connected to a common heat pump water loop with central devices for heat rejection (e.g., cooling tower),
For the purposes of this section, pump system power is the sum of the nominal power demand (i.e. nameplate horsepower at nominal motor efficiency) of motors of all pumps that are required to operate at design conditions to supply fluid from the heating
or cooling source to all heat transfer devices (e.g., coils, heat exchanger) and return it to the source. This converts the system into a variable flow system and, as such, the primary circulation pumps shall comply with the variable flow requirements
in Section 1438.
Section 45. Section 1433 of the 2003 Washington State Energy Code is amended as follows: 1433 Economizers: Air economizers meeting the requirements of Section 1413 shall be provided on all new systems including those serving computer server rooms, electronic equipment, radio equipment, telephone switchgear. EXCEPTIONS: 1. Small units:
a. b. Other cooling units and split systems with a total cooling capacity less than 54,000 Btu/h. The total cooling capacity of all such systems in 1.a and 1.b without economizers shall not exceed 240,000 Btu/h per building, or 10% of its air economizer capacity, whichever is greater. That portion of the equipment serving Group R occupancy is not included in determining the total capacity of all units without economizers in a building. Redundant units are not counted in the capacity limitations.
2. Systems complying with all of the following criteria:
3. Systems for which at least 75% of the annual energy used for mechanical cooling is provided from site-recovery or site-solar energy source. 4. Systems where special outside air filtration and treatment, for the reduction and treatment of unusual outdoor contaminants, makes an air economizer infeasible. 5. Systems that affect other systems (such as dehumidification and supermarket refrigeration systems) so as to increase the overall building energy consumption. New humidification equipment shall comply with Section 1413.4.
6. Equipment used to cool any dedicated server room, electronic equipment room or telecom switch room provided that they completely comply with option a or option b or option c or option d:
Note: For hydronic systems over 300,000 Btuh, see Section 1432.2.2.
Section 46. Section 1435 of the 2003 Washington State Energy Code is amended as follows: 1435 Simultaneous Heating and Cooling: Systems which provide heating and cooling simultaneously to a zone are prohibited. Zone thermostatic and humidistatic controls shall be capable of operating in sequence the supply of heating and cooling energy to the zone. Such controls shall prevent: a. Reheating for temperature control. b. Recooling for temperature control. c. Mixing or simultaneous supply of air that has been previously mechanically heated and air that has been previously cooled, either by economizer systems or by mechanical refrigeration. d. Other simultaneous operation of heating and cooling systems to the same zone. e. Reheating for humidity control. EXCEPTIONS: 1. Zones for which the volume of air that is reheated, recooled, or mixed is no greater than the larger of the following:
a. The volume of air required to meet the minimum required to meet the ventilation requirements of the b. 0.4 cfm/ft2 of the zone conditioned floor area, provided that the temperature of the primary system air is, by design or through reset controls, 0-12F below the design space heating temperature when outside air temperatures are below 60F for reheat systems and cold deck of mixing systems and 0-12F above design space temperature when outside air temperatures are above 60F for recooling systems and hot deck of mixing systems. For multiple zone systems, each zone need not comply with this exception provided the average of all zones served by the system that have both heating and cooling ability comply. c. 300 cfm. This exception is for zones whose peak flow rate totals no more than 10% of the total fan system flow rate. d. Any higher rate that can be demonstrated, to the satisfaction of the building official, to reduce overall system annual energy usage by offsetting reheat/recool energy losses through a reduction in outdoor air intake in accordance with the multiple space requirements defined in ASHRAE Standard 62. 2. Zones where special pressurization relationships, crosscontamination requirements, or code required minimum circulation rates are such that variable air volume systems are impractical. 3. Zones where at least 75% of the energy for reheating or for providing warm air in mixing systems is provided from a site-recovered (including condenser heat) or site-solar energy source. 4. Zones where specific humidity levels are required to satisfy process needs, such as computer rooms, museums, surgical suites, and buildings with refrigerating systems, such as supermarkets, refrigerated warehouses, and ice arenas. Section 47. Section 1436 of the 2003 Washington State Energy Code is amended as follows: 1436 Heat Recovery 1436.1 Fan Systems: Fan systems which have both
a. a capacity of 5,000 cfm or greater b. which have a minimum outside air supply of 70% or greater of the total air circulation shall have a heat recovery system with at least 50% recovery effectiveness. Fifty percent heat recovery effectiveness shall mean an increase in the outside air supply temperature at design heating conditions of one half the difference between the outdoor design air temperature and 65 degrees F. Provision shall be made to bypass or control the heat recovery system to permit air economizer operation as required by Section 1433. Heat recovery energy may be provided from any site-recovered or site-solar source. EXCEPTIONS: These exceptions only apply to the particular exhaust subsystems. The remaining cfm of the main supply system is subject to the heat recovery requirements.
1. Laboratory systems equipped with both variable air volume supply and variable air volume or two-speed exhaust fume hoods, provided that an instruction label is placed on the face of the hood that matches Exhibit 14-1.
Exhibit 14-1
INSTRUCTIONS TO OPERATOR
To be in compliance with the Seattle Energy Code, this fume hood is designed to operate as variable air volume (VAV) by adjusting the sash or controller. Maintain sash in the minimum position during use and
close totally when the fume hood is not in use. 2. Systems serving spaces heated to less than 60 degrees F. 3. Systems which can be shown to use as much energy with the addition of heat recovery equipment as without it. 4. Systems exhausting toxic, flammable, paint exhaust or corrosive fumes making the installation of heat recovery equipment impractical. 5. Type I commercial kitchen hoods. Section 48. The 2003 Washington State Energy Code is amended by adding a new Section 1436.2 to read as follows: 1436.2 Condensate Systems: On-site steam heating systems shall have condensate water recovery. On-site includes a system that is located within or adjacent to one or more buildings within the boundary of a contiguous area or campus under one ownership and which serves one or more of those buildings. Other buildings with steam heating systems which do not have condensate water recovery shall have condensate heat recovery. Section 49. The 2003 Washington State Energy Code is amended by adding a new Section 1436.3 to read as follows: 1436.3 Heat Recovery for Service Water Heating: Condenser heat recovery systems shall be installed for heating or preheating of service hot water provided all of the following are true: a. The facility operates 24 hours a day. b. The total installed heat rejection capacity of the water-cooled systems exceeds 6,000,000 Btu/h of heat rejection. c. The capacity of service water heating equipment exceeds 1,000,000 Btu/h. The required heat recovery system shall have the capacity to provide the smaller of: a. 60% of the peak heat rejection load at design conditions, or b. preheat of the peak service hot water draw to 85F , or c. 50% of the service water heating load. EXCEPTIONS: 1. Facilities that employ condenser heat recovery for space heating with a heat recovery design exceeding 30% of the peak water-cooled condenser load at design conditions. 2. Facilities that provide 60% of their service water heating from site solar or site recovered energy or from other sources. Section 50. Section 1437 of the 2003 Washington State Energy Code is amended as follows: 1437 Electric Motor Efficiency: Design A & B squirrel-cage, T-frame induction permanently wired polyphase motors of 1 hp or more having synchronous speeds of 3,600, 1,800 and 1,200 rpm shall have a nominal full-load motor efficiency no less than the corresponding values for energy efficient motors provided in Table 14-4. EXCEPTIONS: 1. Motors used in systems designed to use more than one speed of a multi-speed motor. 2. Motors used as a component of the equipment meeting the minimum equipment efficiency requirements of Section 1411 and Tables 14-1A through 14-1G provided that the motor input is included when determining the equipment efficiency. 3. Motors that are an integral part of specialized process equipment. 4. Where the motor is integral to a listed piece of equipment for which no complying motor has been approved.
Fan motors less than 1 hp in series terminal units shall
Section 51. Section 1438 of the 2003 Washington State Energy Code is amended as follows: 1438 Variable Flow Systems and System Criteria: For fans and pumps greater than 10 horsepower, where the application involves variable flow, and water source heat pump loops subject to the requirements of Section 1432.2.2, there shall be a. variable speed drives or
b. other controls and devices that will result in fan and pump motor demand of no more than 30% of design wattage at 50% of design air volume for fans when static pressure set point equals 1/3 the total design static pressure, and 50% of design
water flow for pumps, based on manufacturer's certified test data.
At the time this Code was adopted, very few technologies could be shown to meet the criteria in option b.
Static pressure sensors used to control variable air volume fans shall be placed in a position such that the controller set point is no greater than 1/3 the total design fan static pressure.
Section 52. The 2003 Washington State Energy Code is amended by adding a new Section 1438.1 to read as follows: 1438.1 Cooling Towers: All cooling towers with a total fan motor horsepower greater than 10 hp shall be equipped with variable speed drive or with a pony motor of a rated hp no greater than 1/3 of the hp of the primary motor. For pony motors, the cooling tower control shall provide two-stage operation of fans and shall bring on the pony motor to operate without the primary motor while meeting the condenser water setpoint. Section 53. Section 1440 of the 2003 Washington State Energy Code is amended as follows:
1440 Service Water Heating: Service water heating equipment shall comply with the applicable efficiencies in Tables 14-1A through 14-1M.
Section 54. Section 1452 of the 2003 Washington State Energy Code is amended as follows:
1452 Pool Water Heaters: Pool water heaters using electric resistance heating as the primary source of heat are prohibited for pools over 2,000 gallons. Heat pump pool heaters shall have a minimum COP of 4.0 determined in accordance
with ASHRAE Standard 146, Method of Testing for Rating Pool Heaters. Other pool heating equipment shall comply with the applicable efficiencies in Tables 141A through Section 55. Table 14-1A of the 2003 Washington State Energy Code is amended as follows: TABLE 14-1A UNITARY AIR CONDITIONERS AND CONDENSING UNITS, ELECTRICALLY OPERATED, MINIMUM EFFICIENCY REQUIREMENTS Equipment Size Sub-Category or Minimum Test Type Category Rating Efficiencyb Procedurea Condition Air Conditioners, < 65,000 Btu/hd Split System ARI 210/240 Air Cooled Before 23 10.0 SEER Jan 2006: As of 23 Jan 12.0 SEER 2006: Single Package Before 23 9.7 SEER Jan 2006: As of 23 Jan 12.0 SEER 2006: >= 65,000 Btu/h and Split System 10.3 EERc < 135,000 Btu/h and 10.6 IPLVc Single Package >= 135,000 Btu/h Split System 9.7 EERc ARI 340/360 and and 9.9 IPLVc < 240,000 Btu/h Single Package >= 240,000 Btu/h Split System 9.5 EERc and and 9.7 IPLVc <760,000 Btu/h Single Package >= 760,000 Btu/h Split System 9.2 EERc and 9.4 IPLVc Single Package
< 30,000 Split System ARI Through-the-Wall, Btu/hd Before 23 Jan 10.0 SEER 210/240 Air Cooled 2006: 10.9 SEER
As of 23 Jan 2006:
Single Package 9.7 SEER Before 23 Jan 10.6 SEER 2006: As of 23 Jan
2006:
Small-Duct < 65,000 Split System 10.0 ARI High-Velocity, Btu/hd SEER 210/240 Air Cooled Air Conditioners, < 65,000 Btu/h Split System 12.1 EER ARI 210/240 and 11.2 IPLV Water and Single Package Evaporatively Cooled >= 65,000 Btu/h Split System 11.5 EERc and and 10.6 IPLVc < 135,000 Btu/h Single Package >= 135,000 Btu/h Split System 11.0 EERc ARI 340/360 and and 10.3 IPLVc <= 240,000 Btu/h Single Package > 240,000 Btu/h Split System 11.0 EERc and 10.3 IPLVc Single Package Condensing Units, >= 135,000 Btu/h 10.1 EER ARI 365 Air Cooled 11.2 IPLV Condensing Units, >= 135,000 Btu/h 13.1 EER Water or 13.1 IPLV Evaporatively Cooled a Reserved. b IPLVs are only applicable to equipment with capacity modulation. c Deduct 0.2 from the required EERs and IPLVs for units with a heating section other than electric resistance heat. d Single-phase air-cooled air-conditioners < 65,000 Btu/h are regulated by NAECA. SEER values are those set by NAECA. Section 56. Table 14-1B of the 2003 Washington State Energy Code is amended as follows: TABLE 14-1B UNITARY AND APPLIED HEAT PUMPS, ELECTRICALLY OPERATED, MINIMUM EFFICIENCY REQUIREMENTS Equipment Size Sub-Category or Minimum Test Type Category Rating Efficiencyb Procedurea Condition Air Cooled, < 65,000 Btu/hd Split System ARI 210/240 (Cooling Mode) Before 23 10.0 SEER Jan 2006: As of 23 Jan 12.0 SEER 2006: Single Package Before 23 9.7 SEER Jan 2006: As of 23 Jan 12.0 SEER 2006: 65,000 Btu/h and Split System 10.1 EERc < 135,000 Btu/h and 10.4 IPLVc Single Package 135,000 Btu/h Split System 9.3 EERc ARI 340/360 and and 9.5 IPLVc <240,000 Btu/h Single Package 240,000 Btu/h Split System 9.0 EERc and 9.2 IPLVc Single Package
< 30,000 Split System ARI Through-the-Wall Btu/hd 10.0 SEER 210/240 (Air Cooled, Before 23 Jan 10.9 SEER Cooling Mode)
2006: As of 23 Jan 2006:
Single Package 9.7 SEER Before 23 Jan 10.6 SEER 2006: As of 23 Jan
2006:
Small-Duct < 65,000 Split System 10.0 ARI High-Velocity Btu/hd SEER 210/240 (Air Cooled, Cooling Mode) Water-Source < 17,000 Btu/h 86 F Entering 11.2 EER ARI/ISO-13256(Cooling Mode) Water 1 17,000 Btu/h and 86 F Entering 12.0 EER ARI/ISO 13256 <65,000 Btu/h Water 1 65,000 Btu/h and 86 F Entering 12.0 EER ARI/ISO 13256 < 135,000 Btu/h Water 1 Groundwater-Source < 135,000 Btu/h 59 F Entering 16.2 EER ARI/ISO 13256 Water 1 (Cooling Mode) Ground Source < 135,000 Btu/h 77 F Entering 13.4 EER ARI/ISO-13256 (Cooling Mode) Water 1 Air Cooled < 65,000 Btu/hd Split System ARI 210/240 (Heating Mode) (Cooling Before 23 6.8 HSPF Capacity) Jan 2006: As of 23 Jan 7.4 HSPF 2006: Single Package Before 23 6.6 HSPF Jan 2006: As of 23 Jan 7.4 HSPF 2006: 65,000 Btu/h and 47 F db/43 F wb 3.2 COP < 135,000 Btu/h Outdoor Air (Cooling 17 F db/15 F wb 2.2 COP Capacity) Outdoor Air 135,000 Btu/h 47 F db/43 F wb 3.1 COP ARI 340/360 (Cooling Outdoor Air Capacity) 17 F db/15 F wb 2.0 COP Outdoor Air
< 30,000 Split System ARI Through-the-Wall Btu/hd 6.8 HSPF 210/240 (Air Cooled, Before 23 Jan 7.1 HSPF Heating Mode)
2006: As of 23 Jan 2006:
Single Package 6.6 HSPF Before 23 Jan 7.0 HSPF 2006: As of 23 Jan
2006:
Small-Duct < 65,000 Split System 6.8 ARI High-Velocity Btu/hd HSPF 210/240 (Air Cooled, Heating Mode) Water-Source < 135,000 Btu/h 68 F Entering 4.2 COP ARI/ISO-13256 (Heating Mode) (Cooling Water 1 Capacity) Groundwater-Source < 135,000 Btu/h 50 F Entering 3.6 COP ARI/ISO-13256 (Cooling Water 1 (Heating Mode) Capacity) Ground Source < 135,000 Btu/h 32 F Entering 3.1 COP ARI/ISO-13256(Heating Mode) (Cooling Water 1 Capacity) a Reserved. b IPLVs and Part load rating conditions are only applicable to equipment with capacity modulation. c Deduct 0.2 from the required EERs and IPLVs for units with a heating section other than electric resistance heat. d Single-phase air-cooled heat pumps < 65,000 Btu/h are regulated by NAECA. SEER and HSPF values are those set by NAECA Section 57. Table 14-1C of the 2003 Washington State Energy Code is amended as follows: TABLE 14-1C WATER CHILLING PACKAGES, MINIMUM EFFICIENCY REQUIREMENTS
Equipment Type Size Minimum Test Category Air Cooled, With All 1.26 2.80 COP ARI Condenser, Capacities 1.15 3.05 IPLV 550/590 Electrically Operated Air Cooled, All 1.13 3.10 COP Without Condenser, Capacities 1.02 3.45 IPLV Electrically Operated
Water Cooled, < 40 0.84 4.20 ARI Electrically tons 0.70 COP 550/590 Operated 5.05 IPLV > 40 0.79
4.45 tons and 0.67 COP < 150 Tons 5.25 IPLV
150 0.63 5.55 Tons and 0.60 COPc < 300 Tons 5.90 IPLV
300 0.58 6.10 Tons 0.55 COPc 6.40 IPLV
Water Cooled, < 150 4.45 ARI Electrically Tons COP 550/590 Operated, Positive 5.20 IPLV Displacement (Rotary, Screw and Scroll)
150 4.90 Tons and COP < 300 Tons 5.60 IPLV
>= 300 5.50 Tons COP 6.15 IPLV
Water Cooled, < 150 5.00 ARI Electrically Tons COP 550/590 Operated, 5.25 IPLV Centrifugal
150 5.55 Tons and COP < 300 Tons 5.90 IPLV
300 6.10 Tons COP 6.40 IPLV Air Cooled All 0.60 COP Absorption Capacities Single Effect Water Cooled All 0.70 COP Absorption Capacities Single Effect Absorption Double All 1.00 COP ARI 560 Effect, Capacities 1.05 IPLV Indirect-Fired Absorption Double All 1.00 COP Effect, Capacities 1.00 IPLV Direct-Fired a Reserved. b The chiller equipment requirements do not apply for chillers used in low temperature applications where the design leaving fluid temperature is less than or equal to 40F. c COP requirements do not apply to other than centrifugal equipment. d This column is inserted for convenience of users. The values are converted from the COP and IPLV values in the following column using the equation: kW/ton = 1/(COP x 3413/12000). Section 58. Table 14-1D of the 2003 Washington State Energy Code is amended as follows: TABLE 14-1D PACKAGED TERMINAL AIR CONDITIONERS, PACKAGED TERMINAL HEAT PUMPS, ROOM AIR CONDITIONERS, AND ROOM AIR CONDITIONER HEAT PUMPS, ELECTRICALLY OPERATED, MINIMUM EFFICIENCY REQUIREMENTS Equipment Size Sub-Category or Minimum Test Type Category Efficiencyb Procedurea Rating Condition PTAC (Cooling All capacities 95 F db Outdoor 12.5 ARI 310/380 Mode) Air (0.213 x New Construction Cap/1000)b EER 82 F db Outdoor 14.7 Air (0.213 x Cap/1000) b EER PTAC (Cooling All capacities 95 F db Outdoor 10.9 Mode) Air (0.213 x New Replacementsc Cap/1000) b EER 82 F db Outdoor 13.1 Air (0.213 x Cap/1000) b EER PTHP (Cooling All capacities 95 F db Outdoor 12.3 Mode) Air (0.213 x New Construction Cap/1000) b EER 82 F db Outdoor 14.5 Air (0.213 x Cap/1000) b EER PTHP (Cooling All capacities 95 F db Outdoor 10.8 Mode) Air (0.213 x New Replacementsc Cap/1000) b EER 82 F db Outdoor 13.0 Air (0.213 x Cap/1000) b EER PTHP (Heating All capacities 95 F db Outdoor 3.2 (0.026 Mode) Air x New Construction Cap/1000) b EER PTHP (Heating All capacities 95 F db Outdoor 2.9 (0.026 Mode) Air x New Replacementsc Cap/1000) b EER
SPVAC (Cooling All capacities 95 F db/75 F 8.6 EER ARI-390 Mode) wb Outdoor Air
SPVHP (Cooling All capacities 95 F db/75 F 8.6 EER Mode) wb Outdoor Air
SPVAC (Heating All capacities 47 F db/43 F 2.7 COP Mode) wb Outdoor Air Room Air < 6,000 Btu/h 9.7 EER ANSI/AHAM Conditioners, RAC-1 with Louvered Sides 6,000 Btu/h and 9.7 EER <8,000 Btu/h 8,000 Btu/h and 9.8 EER < 14,000 Btu/h 14,000 Btu/h and 9.7 EER < 20,000 Btu/h 20,000 Btu/h 8.5 EER Room Air < 8,000 Btu/h 9.0 EER Conditioners, without Louvered Sides 8,000 Btu/h and 8.5 EER <20,000 Btu/h 20,000 Btu/h 8.5 EER Room Air < 20,000 Btu/h 9.0 EER Conditioners, Heat Pumps with Louvered Sides 20,000 Btu/h 8.5 EER Room Air < 14,000 Btu/h 8.5 EER Conditioners, Heat Pumps without Louvered Sides 14,000 Btu/h 8.0 EER Room Air All capacities 8.7 EER Conditioner, Casement Only Room Air All capacities 9.5 EER Conditioner, Casement-Slider a Reserved. b Cap means the rated cooling capacity of the product in Btu/h. If the unit's capacity is less than 7000 Btu/h, use 7000 Btu/h in the calculation. If the unit's capacity is greater than 15,000 Btu/h, use 15,000 Btu/h in the calculation. c Replacement units must be factory labeled as follows: "MANUFACTURED FOR REPLACEMENT APPLICATIONS ONLY; NOT TO BE INSTALLED IN NEW CONSTRUCTION PROJECTS." Replacement efficiencies apply only to units with existing sleeves less than 16-in. high and less than 42-in. wide. d Casement room air conditioners are not separate product classes under current minimum efficiency column. e New room air conditioner standards, covered by NAECA became effective October 1, 2000. Section 59. The 2003 Washington State Energy Code is amended by adding a new Table 14-1H to read as follows: TABLE 14-1H Reserved Section 60. The 2003 Washington State Energy Code is amended by adding a new Table 14-1I to read as follows: TABLE 14-1I Reserved Section 61. The 2003 Washington State Energy Code is amended by adding a new Table 14-1J to read as follows: TABLE 14-1J Reserved Section 62. The 2003 Washington State Energy Code is amended by adding a new Table 14-1K to read as follows: TABLE 14-1K IPLV/NPLV FOR WATER COOLED CHILLERS < 150 TONS Water Cooled Chillers < 150 Tons IPLVstd = 5.25 Condenser Flow Rate 2 2.5 3 4 5 6 gpm/tond gpm/ton gpm/ton gpm/ton gpm/ton gpm/ton Leaving Entering LIFTa Chilled Condenser (F) Water Water Required IPLV/NPLV Temperature Temperature (F) (F) 46 75 29 5.84 6.10 6.30 6.61 6.84 7.00 45 75 30 5.75 6.00 6.19 6.47 6.68 6.83 44 75 31 5.67 5.91 6.08 6.34 6.53 6.67 43 75 32 5.59 5.82 5.99 6.23 6.39 6.52 42 75 33 5.51 5.74 5.90 6.12 6.27 6.39 41 75 34 5.43 5.66 5.81 6.02 6.16 6.26 46 80 34 5.43 5.66 5.81 6.02 6.16 6.26 40 75 35 5.35 5.58 5.73 5.93 6.06 6.15 45 80 35 5.35 5.58 5.73 5.93 6.06 6.15 44 80 36 5.26 5.50 5.65 5.84 5.96 6.06 43 80 37 5.16 5.42 5.57 5.76 5.87 5.96 42 80 38 5.06 5.33 5.49 5.67 5.79 5.87 41 80 39 4.95 5.24 5.41 5.60 5.71 5.78 46 85 39 4.95 5.24 5.41 5.60 5.71 5.78 40 80 40 4.83 5.14 5.32 5.52 5.63 5.70 45 85 40 4.83 5.14 5.32 5.52 5.63 5.70 44 85 41 4.69 5.04 5.25c 5.43 5.55 5.62 43 85 42 4.55 4.93 5.13 5.35 5.47 5.54 42 85 43 4.38 4.80 5.03 5.26 5.38 5.46 41 85 44 4.21 4.67 4.91 5.17 5.30 5.38 40 85 45 4.01 4.52 4.79 5.06 5.20 5.29 Condenser DTb 14.04 11.23 9.36 7.02 5.62 4.68 a LIFT = Entering Condenser Water Temperature Leaving Chilled Water Temperature b Condenser DT = Leaving Condenser Water Temperature (F) Entering Condenser Water Temperature (F) c All values shown are NPLV except at conditions of 3 gpm/ton and 41 F LIFT which is IPLV. Kadj = 6.1507 0.30244(X) + 0.0062692(X)2 0.000045595(X)3 where X = Condenser DT + LIFT COPadj = Kadj * COPstd d Retrofit applications only. Section 63. The 2003 Washington State Energy Code is amended by adding a new Table 14-1L to read as follows: TABLE 14-1L IPLV/NPLV FOR WATER COOLED CHILLERS >= 150 TONS, < 300 TONS Water Cooled Chillers >= 150 Tons, < 300 Tons Water Cooled Chillers >= 150 Tons, < 300 Tons IPLVstd = 5.90 Condenser Flow Rate 2 2.5 3 4 5 6 gpm/tond gpm/ton gpm/ton gpm/ton gpm/ton gpm/ton Leaving Entering LIFTa Chilled Condenser (F) Water Water Required IPLV/NPLV Temperat Temperatu ure (F) re (F) 46 75 29 6.58 6.87 7.11 7.46 7.71 7.90 45 75 30 6.49 6.76 6.98 7.30 7.53 7.70 44 75 31 6.40 6.66 6.86 7.15 7.36 7.52 43 75 32 6.31 6.56 6.75 7.02 7.21 7.35 42 75 33 6.22 6.47 6.65 6.90 7.07 7.20 41 75 34 6.13 6.38 6.55 6.79 6.95 7.06 46 80 34 6.13 6.38 6.55 6.79 6.95 7.06 40 75 35 6.03 6.29 6.46 6.68 6.83 6.94 45 80 35 6.03 6.29 6.46 6.68 6.83 6.94 44 80 36 5.93 6.20 6.37 6.58 6.72 6.82 43 80 37 5.82 6.11 6.28 6.49 6.62 6.72 42 80 38 5.71 6.01 6.19 6.40 6.53 6.62 41 80 39 5.58 5.91 6.10 6.31 6.44 6.52 46 85 39 5.58 5.91 6.10 6.31 6.44 6.52 40 80 40 5.44 5.80 6.00 6.22 6.35 6.43 45 85 40 5.44 5.80 6.00 6.22 6.35 6.43 44 85 41 5.29 5.68 5.90c 6.13 6.26 6.34 43 85 42 5.13 5.55 5.79 6.03 6.16 6.25 42 85 43 4.94 5.41 5.67 5.93 6.07 6.16 41 85 44 4.74 5.26 5.54 5.82 5.97 6.07 40 85 45 4.52 5.09 5.40 5.71 5.87 5.97 Condenser DTb 14.04 11.23 9.36 7.02 5.62 4.68 a LIFT = Entering Condenser Water Temperature Leaving Chilled Water Temperature b Condenser DT = Leaving Condenser Water Temperature (F) Entering Condenser Water Temperature (F) c All values shown are NPLV except at conditions of 3 gpm/ton and 41 F LIFT which is IPLV. Kadj = 6.1507 0.30244(X) + 0.0062692(X)2 0.000045595(X)3 where X = Condenser DT + LIFT COPadj = Kadj * COPstd d Retrofit applications only. Section 64. The 2003 Washington State Energy Code is amended by adding a new Table 14-1M to read as follows: TABLE 14-1M IPLV/NPLV FOR WATER COOLED CHILLERS >= 300 TONS Water Cooled Chillers >= 300 Tons IPLVstd = 6.40 Condenser Flow Rate 2 2.5 3 4 5 6 gpm/tond gpm/ton gpm/ton gpm/ton gpm/ton gpm/ton Leaving Entering LIFTa Chilled Condenser (F) Water Water Required IPLV/NPLV Temperature Temperature (F) (F) 46 75 29 7.15 7.47 7.72 8.10 8.37 8.58 45 75 30 7.05 7.35 7.58 7.93 8.18 8.36 44 75 31 6.95 7.23 7.45 7.77 8.00 8.16 43 75 32 6.85 7.13 7.33 7.63 7.83 7.98 42 75 33 6.75 7.03 7.22 7.49 7.68 7.82 41 75 34 6.65 6.93 7.12 7.37 7.55 7.67 46 80 34 6.65 6.93 7.12 7.37 7.55 7.67 40 75 35 6.55 6.83 7.01 7.26 7.42 7.54 45 80 35 6.55 6.83 7.01 7.26 7.42 7.54 44 80 36 6.44 6.73 6.92 7.15 7.30 7.41 43 80 37 6.32 6.63 6.82 7.05 7.19 7.30 42 80 38 6.20 6.53 6.72 6.95 7.09 7.19 41 80 39 6.06 6.42 6.62 6.85 6.99 7.08 46 85 39 6.06 6.42 6.62 6.85 6.99 7.08 40 80 40 5.91 6.30 6.52 6.76 6.89 6.98 45 85 40 5.91 6.30 6.52 6.76 6.89 6.98 44 85 41 5.75 6.17 6.40c 6.66 6.79 6.89 43 85 42 5.57 6.03 6.28 6.55 6.70 6.79 42 85 43 5.37 5.88 6.16 6.44 6.59 6.69 41 85 44 5.15 5.71 6.01 6.33 6.49 6.59, 40 85 45 4.91 5.53 5.86 6.20 6.37 6.48 Condenser DTb 14.04 11.23 9.36 7.02 5.62 4.68 a LIFT = Entering Condenser Water Temperature Leaving Chilled Water Temperature b Condenser DT = Leaving Condenser Water Temperature (F) Entering Condenser Water Temperature (F) c All values shown are NPLV except at conditions of 3 gpm/ton and 41 F LIFT which is IPLV. Kadj = 6.1507 0.30244(X) + 0.0062692(X)2 0.000045595(X)3 where X = Condenser DT + LIFT COPadj = Kadj * COPstd d Retrofit applications only. Section 65. The title of Chapter 15 of the 2003 Washington State Energy Code is amended as follows:
CHAPTER 15 LIGHTING, Section 66. Section 1501 of the 2003 Washington State Energy Code is amended as follows:
1501 Scope: Interior and exterior lighting, Section 67. Section 1510 of the 2003 Washington State Energy Code is amended as follows: Section 1510 General Requirements: Lighting and motors shall comply with Sections 1511 through 1513. Lighting systems shall comply with one of the following paths: a. Prescriptive Lighting Option: Interior Section 1521, or Exterior Section 1522. b. Lighting Power Allowance Option: Interior Section 1531, or Exterior Section 1532. c. Systems Analysis. See Section 1141.4. The compliance path selected for interior and exterior lighting need not be the same. However, interior and exterior lighting cannot be traded.
Transformers shall comply with Section 1540.
Figure 15A Lighting,
Section Prescriptive Lighting Systems Number Subject Power Analysis Lighting Allowance Option
Option Option
1510 General Requirements X X X 1511 Electric Motors X X X 1512 Exempt Lighting X X X 1513 Lighting
Controls X X X
1520 Prescriptive Lighting Option X 1521 Prescriptive Interior Lighting X 1522 Requirements Sec. 1532 Prescriptive Exterior Lighting Requirements
1530 Lighting Power Allowance X 1531 Option X 1532 Interior Lighting Power X Allowance Exterior Lighting Power
Allowance
1540 Transformers X X X
RS-29 Systems Analysis X
Section 68. Section 1512 of the 2003 Washington State Energy Code is amended as follows:
1512 Exempt Lighting: The use of these exemptions is at the applicant's option.
Section 69. Section 1512.1 of the 2003 Washington State Energy Code is amended as follows:
1512.1 Exempt Spaces: The following rooms, spaces and areas, are exempt from the lighting power requirements in Sections 1520 through 1522 and 1530 through 1532 but shall comply with all other requirements of this
chapter.
1.
2. High risk security areas or any area identified by building officials as requiring additional lighting.
3. Spaces designed for primary use by the visually impaired
4.
5. Outdoor manufacturing, greenhouses and processing areas.
6. Electrical/mechanical equipment rooms.
7. Outdoor athletic facilities.
8.
9. The sanctuary portion of a house of worship, defined as the space or room where the worship service takes place. Classrooms, meeting rooms, offices and multipurpose rooms that are part of the same facility are not exempt.
Section 70. Section 1512.2 of the 2003 Washington State Energy Code is amended as follows:
1512.2 Exempt Lighting Equipment: The following lighting equipment and tasks are exempt from the lighting requirements of Section 1520 through 1522 and need not be included when calculating the installed lighting power under Section
1530 through 1532 but shall comply with all other requirements of this chapter. All other lighting in areas that are not exempted by Section 1512.2, where exempt tasks and equipment are used, shall comply with all of the requirements
of this chapter.
1. Special lighting needs for research.
2. Emergency lighting that is automatically OFF during normal building operation.
3. Lighting integral to signs
4. Lighting that is part of machines, equipment or furniture.
5. Lighting that is used solely for indoor plant growth during the hours of 10:00 p.m. to 6:00 a.m. However, such lighting shall not be exempt unless it is in addition to general area lighting, is located in a separate fixture, and is
controlled by an independent control device.
6. Lighting for theatrical productions, television broadcasting (including sports facilities),
7. Lighting in galleries, museums and in main building entry lobbies for
8. Exterior lighting for public monuments.
9. Lighting specifically designed for use only during medical or dental procedures and lighting integral to medical equipment. However, such lighting shall not be exempt unless it is in addition to general area lighting, designed specifically
for medical lighting, and is controlled by an independent control device.
Section 71. Section 1513.1 of the 2003 Washington State Energy Code is amended as follows:
1513.1 Local Control and Accessibility: Each space, enclosed by walls or ceiling-height partitions, shall be provided with lighting controls located within that space. The lighting controls, whether one or more, shall be capable of turning off all
lights within the space. The controls shall be readily accessible, at the point of entry/exit, to personnel occupying or using the space.
EXCEPTIONS: The following lighting controls may be centralized in remote locations:
1. Lighting controls for spaces which must be used as a whole.
2. Automatic controls, when provided in addition to manual controls, need not be accessible to the users and may be centralized in a remote location.
3. Controls requiring trained operators.
4. Controls for safety hazards and security.
Section 72. Section 1513.3 of the 2003 Washington State Energy Code is amended as follows:
1513.3 Daylight Zone Control: Lighting in
control the lights independent of general area lighting
1513.3.1 Separate Control: Daylight zones shall have controls which control the lights independent of general area lighting.
EXCEPTION: Daylight spaces enclosed by walls or ceiling height partitions and containing 2 or fewer lighting fixtures are not required to have a separate switch for general area lighting.
1513.3.2 Automatic Control: Daylight zones shall have controls which automatically reduce lighting power in response to available daylight by either:
a. a combination of dimming ballasts and daylight-sensing automatic controls, which are capable of dimming the lights continuously, or
b. a combination of stepped switching and daylight-sensing automatic controls, which are capable of incrementally reducing the light level in steps automatically and turning the lights off automatically.
Any switching devices installed to override the automatic daylighting control shall comply with the criteria in Section 1513.6.2a-e.
Exhibit 1513.3a
Exhibit 1513.3b
Section 73. Section 1513.5 of the 2003 Washington State Energy Code is amended as follows:
1513.5 Automatic Shut-off Controls, Exterior: Exterior lighting, including signs,
Section 74. Section 1513.6 of the 2003 Washington State Energy Code is amended as follows:
1513.6 Automatic Shut-Off Controls, Interior:
EXCEPTIONS:
1. Areas that must be continuously illuminated (e.g. 24 hour convenience stores), or illuminated in a manner requiring manual operation of the lighting.
2. Emergency lighting systems.
3. Switching for industrial or manufacturing process facilities as may be required for production.
4. Hospitals and laboratory spaces.
1513.6.1 Occupancy Sensors: Occupancy sensors shall be capable of automatically turning off all the lights in an area, no more than 30 minutes after the area has been vacated. Light fixtures controlled by occupancy sensors shall have a
wall-mounted, manual switch capable of turning off lights when the space is occupied.
Automatic time switches shall incorporate an over-ride switching device which:
a. is readily accessible;
b. is located so that a person using the device can see the lights or the areas controlled by the switch, or so that the area being illuminated is annunciated;
c. is manually operated;
d. allows the lighting to remain on for no more than 2 hours when an over-ride is initiated; and
e. controls an area not exceeding 5,000 ft2 or 5% of the building footprint for footprints over 100,000 ft2, whichever is greater.
Section 75. Section 1521 of the 2003 Washington State Energy Code is amended as follows:
1521 Prescriptive Interior Lighting Requirements: Spaces for which the Unit Lighting Power Allowance in Table 15-1 is 0.80 W/ft2 or greater may use unlimited numbers of lighting fixtures and lighting energy, provided that the installed lighting
fixtures comply with all four of the following criteria:
a. oneor two-lamp (but not threeor more lamp);
b.
c. fitted with type T-1, T-2, T-4, T-5,
d. hard-wired fluorescent electronic dimming ballasts with photocell or programmable dimming control for all lamps in all zones non-dimming electronic ballasts and electronic
ballasts that screw into medium base sockets do not comply with this section).
Track lighting is not allowed under this path.
1. Up to a total of 5% of installed lighting fixtures
2. Clear safety lenses are allowed in food prep and serving areas and patient care areas in otherwise compliant fixtures.
3. Exit lights are not included in the count of fixtures provided that they do not exceed 5 Watts per fixture and are light emitting diode (LED) type or T-1 fluorescent type only. (See the Uniform Fire Code for face illumination footcandle
requirements and other requirements.)
4. LED lights other than exit lights addressed by exception 3.
Section 76. Section 1530 of the 2003 Washington State Energy Code is amended as follows:
1530 Lighting Power Allowance Option. The installed lighting wattage shall not exceed the lighting power allowance. Lighting wattage includes lamp and ballast wattage. Wattage for fluorescent lamps and ballasts shall be tested per ANSI Standard
C82.2-1984.
The wattage used for any unballasted fixture shall be the maximum UL listed wattage for that fixture regardless of the lamp installed. The wattage used for track lighting shall be:
a. for line voltage track, 50 watts per lineal foot of track or actual luminaire wattage, whichever is greater.
b. for low voltage track (i.e. with remote transformer) (less than 30 volts),
No credit towards compliance with the lighting power allowances shall be given for the use of any controls, automatic or otherwise.
Exit lights that are 5 watts or less per fixture shall not be included in the lighting power allowance calculations. Other exit lights shall be included in the lighting power allowance calculations.
Section 77. Section 1532 of the 2003 Washington State Energy Code is amended as follows:
1532 Exterior Lighting Power Allowance: The exterior lighting power allowance shall be
The lighting in these two areas shall not be traded. The lighting allowance for covered parking shall be 0.20 W/ft2, and the allowance for open parking and outdoor areas shall be
EXCEPTIONS:
1. Group U occupancy accessory to Group R-3 or R-4 occupancy.
2.
INFORMATIVE GUIDE TO SECTION 1532: NOTE THAT THIS GUIDE DOES NOT SUPERCEDE THE REQUIREMENTS IN THE TEXT.
CATEGORY
LIGHTING POWER ALLOWANCE
TRADEOFF
LIMITATIONS
PARKING AND OUTDOOR AREAS
Covered Parking
0.20 Watts/square foot
Calculated separately. Trade offs not allowed with other categories.
Open parking and outdoor areas
0.15 Watts/square foot of area that is illuminated
Calculated separately,
but see allowance below for use of facade lighting credit
FACADE LIGHTING
Perimeter option
7.5 Watts/lineal foot of building perimeter
Calculated separately,
but any wattage allowance not used for facade lighting may be used for open parking and outdoor areas that are illuminated
Surface area option
0.15 Watts/square foot of wall surface area that is illuminated
Calculated separately,
but any wattage allowance up to 7.5 Watts/lineal foot of building perimeter that is not used for facade lighting may be used for open parking and outdoor areas that are illuminated
Section 78. The 2003 Washington State Energy Code is amended by adding a new Section 1540 to read as follows:
1540 Transformers: Internal building transformers that are singlephase and three-phase dry-type and liquid-filled distribution transformers with a primary voltage of 34.5 kV and below and a secondary voltage of 600 Volts and below shall have a minimum
efficiency that complies with NEMA TP-1-1996.
Section 79. Table 15-1 of the 2003 Washington State Energy Code is amended as follows:
TABLE 15-1 UNIT LIGHTING POWER ALLOWANCE (LPA)
Use1 LPA2 (W/ft2)
Painting, welding, carpentry, machine 2.30 shops
Barber shops, beauty shops 2.00
Hotel banquet/conference/exhibition 2.00 hall3,4
Laboratories (see also office and other Aircraft repair hangars 1.50 Cafeterias, fast food establishments5 1.50 Factories, workshops, handling areas 1.50 Gas stations, auto repair shops6 1.50 Institutions 1.50 Libraries5 1.50 Nursing homes and hotel/motel guest rooms 1.50 Retail10, retail banking 1.50 Wholesale stores (pallet rack shelving) 1.50 Mall concourses 1.40
School buildings (Group E occupancy only,
Laundries Medical office, clinics12 1.20
Office buildings, office/administrative
Police and fire stations8 Atria (atriums) 1.00 Assembly spaces9, auditoriums, gymnasia9, 1.00 theaters Group R-1 common areas 1.00 Process plants 1.00 Restaurants/bars5 1.00 Locker and/or shower facilities 0.80 Warehouses11, storage areas 0.50 Aircraft storage hangars 0.40 Parking garages See Section 1532 Plans Submitted for Common Areas Only7 Main floor building lobbies3 (except mall 1.20 concourses) Common areas, corridors, toilet facilities 0.80 and washrooms, elevator lobbies Footnotes for Table 15-1 1. In cases in which a general use and a specific use are listed, the specific use shall apply. In cases in which a use is not mentioned specifically, the Unit Power Allowance shall be determined by the building official. This determination shall be based upon the most comparable use specified in the table. See Section 1512 for exempt areas. 2. The watts per square foot may be increased, by 2% per foot of ceiling height above 20 feet, unless specifically directed otherwise by subsequent footnotes. 3. The watts per square foot of room may be increased by 2% per foot of ceiling height above 12 feet. 4. For all other spaces, such as seating and common areas, use the Unit Lighting Power Allowance for assembly. 5. The watts per square foot of room may be increased by 2% per foot of ceiling height above 9 feet.
6.
For conference rooms and offices less than 150 square feet with full-height partitions, a Unit Lighting Power Allowance of 1.2 W/ft2 may be used. 8. For the fire engine room, the Unit Lighting Power Allowance is 1.00 W/ft2. 9. For indoor sport tournament courts with adjacent spectator seating, the Unit Lighting Power Allowance for the court area is 2.60 W/ft2 provided that there is a manual dimmer or at least two additional steps of lighting control in addition to off.
10. Display window illumination installed within 2 feet of the window provided that the lighting is fitted with LED, tungsten halogen, fluorescent or high intensity discharge lamps and that the display window is separated from the retail space
by walls or at least three-quarter-height partitions (transparent or opaque), and lighting for free-standing display where the lighting moves with the display An additional 1.5 W/ft2 of merchandise display luminaires are exempt provided that they comply with all three of the following: a. located on ceiling-mounted track or directly on or recessed into the ceiling itself (not on the wall),
b. adjustable in both the horizontal and vertical axes c. fitted with LED, tungsten halogen, fluorescent, or high intensity discharge lamps. This additional lighting power is allowed only if the lighting is actually installed. 11. Provided that a floor plan, indicating rack location and height, is submitted, the square footage for a warehouse may be defined, for computing the interior Unit Lighting Power Allowance, as the floor area not covered by racks plus the vertical face area (access side only) of the racks. The height allowance defined in footnote 2 applies only to the floor area not covered by racks.
12. Medical and clinical offices include those facilities which, although not providing overnight patient care, do provide medical, dental, or psychological examination and treatment. These spaces include, but are not limited to, laboratories
and treatment centers.
Section 80. Section 3.4 of Reference Standard 29 (RS-29) of the 2003 Washington State Energy Code is amended as follows: 3.4 HVAC Systems and Equipment: For the standard building, the HVAC system used shall be the system type used in the proposed design. If the proposed HVAC system type does not comply with Sections 1432 through 1439 the standard design system shall comply in all respects with those sections.
EXCEPTION: 1. assembly 6. restaurant 2. health/institutional 7. retail (mercantile) 3. hotel/motel 8. school (educational) 4. light manufacturing 9. warehouse (storage) 5. office (business) Section 81. Section 3.4.4 of Reference Standard 29 (RS-29) of the 2003 Washington State Energy Code is amended as follows: 3.4.4 Fans: The power of the combined fan system per air volume at design conditions (w/cfm) of the proposed design shall be equal to that of the standard design.
EXCEPTION: For underfloor systems, a 25 percent reduction is allowed for the proposed design.
Section 82. Reference Standard 29 (RS-29) of the 2003 Washington State Energy Code is amended by adding a new Section 3.6.5 to read as follows: 3.6.5: There shall be no credit in the proposed design for control of parking garage ventilation. Section 83. Table 3-3 of Reference Standard 29 (RS-29) of the 2003 Washington State Energy Code is amended as follows: TABLE 3-3 HVAC Systems of Prototype Buildings3 Use System # Remarks 1. Assembly a. Churches (any 1 size) b. 50,000 ft2 or 1 or 3 Note 2 3 floors c. 50,000 ft2 or 3 3 floors 2. Health a. Nursing Home 2 (any size) b. 15,000 ft2 1 c. 15,000 ft2 and 4 Note 3 50,000 ft2 d. 50,000 ft2 5 Note 3,4 3. Hotel/Motel
a.
b. 4. Light Manufacturing 1 or 3 5. Office a. 20,000 ft2 1
b. 20,000 ft2 and 4
c. 6. Restaurant 1 or 3 Note 2 7. Retail a. 50,000 ft2 1 or 3 Note 2 b. 50,000 ft2 4 or 5 Note 2 8. Schools a. 75,000 ft2 or 1 3 floors b. 75,000 ft2 or 3 3 floors 9. Warehouse Note 5 Footnote to Table 3-3: The systems and energy types presented in this table are not intended as requirements or recommendations for the proposed design. Floor areas in the table are the total conditioned floor areas for the listed use in the building. The number of floors indicated in the table is the total number of occupied floors for the listed use.TABLE 3-3 (Continued)HVAC System Descriptions for Prototype Buildings1 HVAC Component System #1 System #2 System Packaged rooftop Packaged terminal air Description single zone, one conditioner with unit per zone space heater or heat pump, heating or cooling unit per zone Fan system Design Supply Note 10 Note 11 Circulation Rate Supply Fan Constant volume Fan cycles with call Control for heating or cooling Return Fan NA NA Control Cooling System Direct expansion air Direct expansion air cooled cooled Heating System Furnace, heat pump Heat pump with or electric electric resistance resistance auxiliary or air conditioner with space heater Remarks Drybulb economizer No economizer, if not per Section 1433, required by Section heat recovery if 1433 required by Section 1436 TABLE 3-3 (Continued)HVAC System Descriptions for Prototype Buildings1 HVAC Component System #3 System #4 System Air handler per zone Packaged rooftop VAV Description with central plant with perimeter reheat and fan-powered terminal units Fan system Design Supply Note 10 Note 10 Circulation Rate
Supply Fan Constant volume Variable Air Control Volume systems with controls
per Section 1438
Return Fan Constant volume Variable Air Control Volume systems with controls
per Section 1438 Cooling System Chilled water (Note Direct expansion air 12) cooled Heating System Hot water (Note 13) Hot water (Note 13) or electric resistance Remarks Drybulb economizer Drybulb economizer per Section 1433, per Section 1433. heat recovery if Minimum VAV setting required by Section per Section 1435 1436 Exception 1, Supply air reset by zone of greatest cooling demand, heat recovery if required by Section 1436 TABLE 3-3 (Continued)HVAC System Descriptions for Prototype Buildings1 HVAC Component System #5 System #6 System Built-up central VAV Four-pipe fan coil Description with perimeter per zone with central reheat and plant fan-powered terminal units Fan system Design Supply Note 10 Note 10 Circulation Rate Supply Fan VAV with air-foil Fan cycles with call Control centrifugal fan and for heating or AC frequency cooling variable speed drive Return Fan VAV with air-foil NA Control centrifugal fan and AC frequency variable speed drive Cooling System Chilled water (Note Chilled water (Note 12) 12) Heating System Hot water (Note 13) Hot water (Note 13) or electric or electric resistance resistance Remarks Drybulb economizer No economizer, if not per Section 1433. required by Section Minimum VAV setting 1433 per Section 1435 Exception 1, Supply air reset by zone of greatest cooling demand, heat recovery if required by Section 1436 Numbered Footnotes for Table 3-3 HVAC System Descriptions for Prototype Buildings 1. The systems and energy types presented in this Table are not intended as requirements or recommendations for the proposed design. 2. For occupancies such as restaurants, assembly and retail that are part of a mixed use building which, according to Table 3-3, includes a central chilled water plant (systems 3, 5, or 6), chilled water system type 3 or 5 shall be used as indicated in the table. 3. Constant volume may be used in zones where pressurization relationships must be maintained by code. Where constant volume is used, the system shall have heat recovery if required by Section 1436. VAV shall be used in all other areas, in accordance with Sections 1432 through 1439. 4. Provide run-around heat recovery systems for all fan systems with a minimum outside air intake greater than 70%. Recovery effectiveness shall be 0.50. 5. If a warehouse is not intended to be mechanically cooled, both the standard and proposed designs shall be calculated assuming no mechanical cooling. 6. The system listed is for guest rooms only. Areas such as public areas and back-of-house areas shall be served by system 4. Other areas such as offices and retail shall be served by systems listed in Table 3-3 for these occupancy types. 7. The system listed is for guest rooms only. Areas such as public areas and back-ofhouse areas shall be served by system 5. Other areas such as offices and retail shall be served by systems listed in Table 3-3 for these occupancy types. 8. Reserved. 9. Reserved. 10. Design supply air circulation rate shall be based on a supply-air to room-air temperature difference of 20(F. A higher supply-air temperature may be used if required to maintain a minimum circulation rate of 4.5 air changes per hour or 15 cfm per person to each zone served by the system, at design conditions. If return fans are specified, they shall be sized for the supply fan capacity less the required minimum ventilation with outside air, or 75% of the supply fan capacity, whichever is larger. Except where noted, supply and return fans shall be operated continuously during occupied hours. 11. Fan energy when included in the efficiency rating of the unit as defined in Section 1411, need not be modeled explicitly for this system. The fan shall cycle with calls for heating or cooling. 12. Chilled water systems shall be modeled using a reciprocating chiller for systems with total cooling capacities less than 175 tons, and centrifugal chillers for systems with cooling capacities of 175 tons or greater. For systems with cooling capacities of 600 tons or more, the standard design energy consumption shall be calculated using two centrifugal chillers, lead/lag controlled. Chilled water shall be assumed to be controlled at a constant 44(F. Chiller water pumps shall be sized using a 12(F temperature rise, from 44(F to 56(F, operating at 65% combined impeller and motor efficiency. Condenser water pumps shall be sized using a 10(F temperature rise, operating at 60% combined impeller and motor efficiency. The cooling tower shall be an open circuit, centrifugal blower type sized for the larger of 85(F leaving water temperature or 10(F approach to design wetbulb temperature. The tower shall be controlled to provide a 65(F leaving water temperature whenever weather conditions permit, floating up to design leaving water temperatures at design conditions. Chilled water supply temperature shall be reset in accordance with Section 1432.2.2. 13. Hot water system shall include a natural draft fossil fuel or electric boiler. The hot water pump shall be sized based on a 30(F temperature drop, from 180(F to 150(F, operating at a combined impeller and motor efficiency of 60%. Hot water supply temperature shall be reset in accordance with Section 1432.2.2. Section 84. The provisions of this ordinance are declared to be separate and severable. The invalidity of any clause, sentence, paragraph, subdivision, section or portion of this ordinance, or the invalidity of the application thereof to any person, owner, or circumstance shall not affect the validity of the remainder of this ordinance, or the validity of its application to other persons, owners, or circumstances. Section 85. The Director of the Department of Planning and Development shall for a period of 60 days following the effective date of this ordinance, approve applications that comply with either the requirements of this Ordinance or with the provisions of Ordinance 120804. Section 86. This ordinance shall take effect and be in force thirty (30) days from and after its approval by the Mayor, but if not approved and returned by the Mayor within ten (10) days after presentation, it shall take effect as provided by Municipal Code Section 1.04.020. Passed by the City Council the ____ day of _________, 2004, and signed by me in open session in authentication of its passage this _____ day of __________, 2004. _________________________________ President __________of the City Council Approved by me this ____ day of _________, 2004. _________________________________ Gregory J. Nickels, Mayor Filed by me this ____ day of _________, 2004. ____________________________________ City Clerk (Seal) John Hogan/jh 2003 Seattle Energy Code ordinance, V 1.doc 5/04/04 version #1 |
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