WSR 05-24-087

EMERGENCY RULES

BUILDING CODE COUNCIL


[ Filed December 6, 2005, 2:39 p.m. , effective December 6, 2005 ]


Purpose: To adopt changes to the mechanical efficiency tables and requirements in chapter 51-11 WAC to conform to federal law.

Citation of Existing Rules Affected by this Order: Amending WAC 51-11-0402 and 51-11-1445.

Statutory Authority for Adoption: RCW 19.27A.022, 19.27A.025, and 19.27A.045.

Other Authority: Chapters 19.27 and 34.05 RCW.

Under RCW 34.05.350 the agency for good cause finds that state or federal law or federal rule or a federal deadline for state receipt of federal funds requires immediate adoption of a rule.

Reasons for this Finding: The state Building Code Council (council), based on the following good cause, finds that an emergency affecting the general welfare of the state of Washington exists. The council further finds that immediate amendment of a certain council rule is necessary to comply with federal law and that observing the time requirements of notice and opportunity to comment would be contrary to the public interest.

The declaration of emergency affecting the general welfare of the state of Washington is based on the following findings:

That federal law or federal rule requires immediate adoption of a rule.

The Washington State Energy Code amendments to Sections 402 and 1454 contained herein as adopted by the council under emergency rule making pursuant to RCW 34.05.350, will bring Washington into compliance with the National Appliance Energy Conservation Act. Without this rule change, the code will not comply with federal law.

Number of Sections Adopted in Order to Comply with Federal Statute: New 0, Amended 0, Repealed 0; Federal Rules or Standards: New 0, Amended 2, Repealed 0; or Recently Enacted State Statutes: New 0, Amended 0, Repealed 0.

Number of Sections Adopted at Request of a Nongovernmental Entity: New 0, Amended 0, Repealed 0.

Number of Sections Adopted on the Agency's Own Initiative: New 0, Amended 2, Repealed 0.

Number of Sections Adopted in Order to Clarify, Streamline, or Reform Agency Procedures: New 0, Amended 0, Repealed 0.

Number of Sections Adopted Using Negotiated Rule Making: New 0, Amended 0, Repealed 0; Pilot Rule Making: New 0, Amended 0, Repealed 0; or Other Alternative Rule Making: New 0, Amended 0, Repealed 0.

Date Adopted: December 1, 2005.

John Neff

Council Chair

OTS-8486.4


AMENDATORY SECTION(Amending WSR 04-01-106, filed 12/17/03, effective 7/1/04)

WAC 51-11-0402   Systems analysis.  


402.1 Special Requirements for All Group R Occupancy:


402.1.1 Energy Budgets: Proposed buildings designed in accordance with this section shall be designed to use no more energy from nonrenewable sources for space heating, and domestic hot water heating than a standard building whose enclosure elements and energy consuming systems are designed in accordance with section 502.2 of this Code for the appropriate climate zone, and heating system type. Energy derived from renewable sources may be excluded from the total annual energy consumption attributed to the alternative building.


402.1.2 Calculation of Energy Consumption: The application for a building permit shall include documentation which demonstrates, using a calculation procedure as listed in Chapter 8, or an approved alternate, that the proposed building's annual space heating energy use does not exceed the annual space heating and water heating energy use of a standard building conforming to Chapter 5 of this Code for the appropriate climate zone. The total calculated annual energy consumption shall be shown in units of kWh/ft2-yr or Btu/ft2-yr of conditioned area.


402.1.3 Input Values: The following standardized input values shall be used in calculating annual space heating budgets:


PARAMETER VALUE
Thermostat set point, heating

Thermostat set point, cooling

Thermostat night set back

Thermostat night set back period

65 F

78 F

65 F

0 hours

Internal gain
R-3 and R-4 units

R-1 and R-2 units

3000 Btu/hr

1500 Btu/hr

Domestic Hot Water Heater

Setpoint

120 F

Domestic Hot Water Consumption
20 gallons/person/day.
Minimum heat storage Calculated using standard engineering practice for the actual building or as approved.

Site weather data

Typical meteorological year (TMY) or ersatz TMY data for the closest appropriate TMY site or other sites as approved.
Heating equipment efficiency
((Electric resistance heat

Heat Pumps

Other Fuels

1.00

6.80 HSPF.

0.78 AFUE.))Equipment shall comply with Section 1411.


The standard building shall be modeled with glazing area distributed equally among the four cardinal directions. Parameter values that may be varied by the building designer to model energy saving options include, but are not limited to, the following:


1. Overall thermal transmittance, Uo, of building envelope or individual building components;


2. Heat storage capacity of building;


3. Glazing orientation; area; and solar heat coefficients;


4. Heating system efficiency.


402.1.4 Solar Shading and Access: Building designs using passive solar features with eight percent or more south facing equivalent glazing to qualify shall provide to the building official a sun chart or other approved documentation depicting actual site shading for use in calculating compliance under this section. The building shall contain at least forty-five Btu/F for each square foot of south facing glass.


402.1.5 Infiltration: Infiltration levels used shall be set at 0.35 air changes per hour for thermal calculation purposes only.


402.1.6 Heat Pumps: The heating season performance factor (HSPF) for heat pumps shall be calculated using procedures consistent with section 5.2 of the U.S. Department of Energy Test Procedure for Central Air Conditioners, including heat pumps published in the December 27, 1979 Federal Register Vol. 44, No. 24.10 CFR 430. Climate data as specified above, the proposed buildings overall thermal performance value (Btu/F) and the standardized input assumptions specified above shall be used to model the heat pumps HSPF.


402.2 Energy Analysis: Compliance with this chapter will require an analysis of the annual energy usage, hereinafter called an annual energy analysis.

EXCEPTIONS: Chapters 5, and 6 of this Code establish criteria for different energy-consuming and enclosure elements of the building which, will eliminate the requirement for an annual systems energy analysis while meeting the intent of this Code.
A building designed in accordance with this chapter will be deemed as complying with this Code if the calculated annual energy consumption is not greater than a similar building (defined as a "standard design") whose enclosure elements and energy-consuming systems are designed in accordance with Chapter 5.
For an alternate building design to be considered similar to a "standard design," it shall utilize the same energy source(s) for the same functions and have equal floor area and the same ratio of envelope area to floor area, environmental requirements, occupancy, climate data and usage operational schedule.

402.3 Design: The standard design, conforming to the criteria of Chapter 5 and the proposed alternative design shall be designed on a common basis as specified herein:


The comparison shall be expressed as kBtu or kWh input per square foot of conditioned floor area per year at the building site.


402.4 Analysis Procedure: The analysis of the annual energy usage of the standard and the proposed alternative building and system design shall meet the following criteria:


a. The building heating/cooling load calculation procedure used for annual energy consumption analysis shall be detailed to permit the evaluation of effect of factors specified in section 402.5.


b. The calculation procedure used to simulate the operation of the building and its service systems through a full-year operating period shall be detailed to permit the evaluation of the effect of system design, climatic factors, operational characteristics, and mechanical equipment on annual energy usage. Manufacturer's data or comparable field test data shall be used when available in the simulation of systems and equipment. The calculation procedure shall be based upon eight thousand seven hundred sixty hours of operation of the building and its service systems.


402.5 Calculation Procedure: The calculation procedure shall cover the following items:


a. Design requirements -- Environmental requirements as required in Chapter 3.


b. Climatic data -- Coincident hourly data for temperatures, solar radiation, wind and humidity of typical days in the year representing seasonal variation.


c. Building data -- Orientation, size, shape, mass, air, moisture and heat transfer characteristics.


d. Operational characteristics -- Temperature, humidity, ventilation, illumination, control mode for occupied and unoccupied hours.


e. Mechanical equipment -- Design capacity, part load profile.


f. Building loads -- Internal heat generation, lighting, equipment, number of people during occupied and unoccupied periods.

EXCEPTION: Group R Occupancy shall comply with calculation procedures in Chapter 8, or an approved alternate.

402.6 Documentation: Proposed alternative designs, submitted as requests for exception to the standard design criteria, shall be accompanied by an energy analysis comparison report. The report shall provide technical detail on the two building and system designs and on the data used in and resulting from the comparative analysis to verify that both the analysis and the designs meet the criteria of Chapter 4 of this Code.

[Statutory Authority: RCW 19.27A.020, 19.27A.045. 04-01-106, 51-11-0402, filed 12/17/03, effective 7/1/04. Statutory Authority: RCW 19.27A.025 and 19.27A.045. 98-03-003, 51-11-0402, filed 1/8/98, effective 7/1/98. Statutory Authority: Chapters 19.27, 19.27A and 34.05 RCW. 94-05-059, 51-11-0402, filed 2/10/94, effective 4/1/94. Statutory Authority: RCW 19.27A.020 and 1990 c 2. 91-01-112, 51-11-0402, filed 12/19/90, effective 7/1/91.]


AMENDATORY SECTION(Amending WSR 05-01-013, filed 12/2/04, effective 7/1/05)

WAC 51-11-1454   Pool covers.   Heated pools shall be equipped with a vapor retardant pool cover on or at the water surface. Pools heated to more than 90 degrees F shall have a pool cover with a minimum insulation value of R-12.


Table 14-1A

Unitary Air Conditioners and Condensing Units, Electrically Operated, Minimum Efficiency Requirements


Equipment Type Size Category Sub-Category or Rating Condition Minimum Efficiencyb Test Procedurea
Air Conditioners, Air Cooled < 65,000 Btu/h((d)) Split System ARI 210/240
((Before January 23, 2006)) 10.0 SEER
On or After January 23, 2006d ((12.0)) 13.0 SEER
Single Package
((Before January 23, 2006)) 9.7 SEER
On or After January 23, 2006d ((12.0)) 13.0 SEER
≥ 65,000 Btu/h and

< 135,000 Btu/h

Split System and

Single Package

10.3 EERc
≥ 135,000 Btu/h and

< 240,000 Btu/h

Split System and

Single Package

9.7 EERc ARI 340/360
≥ 240,000 Btu/h and

< 760,000 Btu/h

Split System and

Single Package

9.5 EERc

9.7 IPLVc

≥ 760,000 Btu/h Split System and

Single Package

9.2 EERc

9.4 IPLVc

Through-the-Wall, Air Cooled < 30,000 Btu/h((d)) Split System ARI 210/240
((Before January 23, 2006)) 10.0 SEER
On or After January 23, 2006d 10.9 SEER
Single Package
((Before January 23, 2006)) 9.7 SEER
On or After January 23, 2006d 10.6 SEER
((Small-Duct High-Velocity, Air Cooled < 65,000 Btu/hd Split System 10.0 SEER ARI 210/240))
Air Conditioners, Water and Evaporatively Cooled < 65,000 Btu/h Split System and

Single Package

12.1 EER ARI 210/240
≥ 65,000 Btu/h and

< 135,000 Btu/h

Split System and

Single Package

11.5 EERc
≥ 135,000 Btu/h and

≤ 240,000 Btu/h

Split System and

Single Package

11.0 EERc ARI 340/360
> 240,000 Btu/h Split System and

Single Package

11.0 EERc

10.3 IPLVc

Condensing Units, Air Cooled ≥ 135,000 Btu/h 10.1 EER

11.2 IPLV

ARI 365
Condensing Units, Water or Evaporatively Cooled ≥ 135,000 Btu/h 13.1 EER

13.1 IPLV

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 Date of manufacture for single-phase air-cooled air-conditioners < 65,000 Btu/h ((are)), as regulated by NAECA. SEER values are those set by NAECA.


Table 14-1B

Unitary and Applied Heat Pumps, Electrically Operated, Minimum Efficiency Requirements



Equipment Type Size Category Sub-Category or Rating Condition Minimum Efficiencyb Test Procedurea
Air Cooled, (Cooling Mode) < 65,000 Btu/h((d)) Split System ARI 210/240
((Before January 23, 2006)) 10.0 SEER
On or After January 23, 2006d ((12.0)) 13.0 SEER
Single Package
((Before January 23, 2006)) 9.7 SEER
On or After January 23, 2006d ((12.0)) 13.0 SEER
≥ 65,000 Btu/h and

< 135,000 Btu/h

Split System and

Single Package

10.1 EERc
≥ 135,000 Btu/h and

< 240,000 Btu/h

Split System and

Single Package

9.3 EERc ARI 340/360

≥ 240,000 Btu/h Split System and

Single Package

9.0 EERc

9.2 IPLVc

Through-the-Wall (Air Cooled, Cooling Mode) < 30,000 Btu/h((d)) Split System ARI 210/240
((Before January 23, 2006)) 10.0 SEER
On or After January 23, 2006d 10.9 SEER
Single Package
((Before January 23, 2006)) 9.7 SEER
On or After January 23, 2006d 10.6 SEER
((Small-Duct High-Velocity (Air Cooled, Cooling Mode) < 65,000 Btu/hd Split System 10.0 SEER ARI 210/240))
Water-Source

(Cooling Mode)

< 17,000 Btu/h 86F Entering Water 11.2 EER ARI/ISO-13256-1
≥ 17,000 Btu/h and

< 65,000 Btu/h

86F Entering Water 12.0 EER ARI/ISO-13256-1
≥ 65,000 Btu/h and

< 135,000 Btu/h

86F Entering Water 12.0 EER ARI/ISO-13256-1
Groundwater-Source (Cooling Mode) < 135,000 Btu/h 59F Entering Water 16.2 EER ARI/ISO-13256-1
Ground Source

(Cooling Mode)

< 135,000 Btu/h 77F Entering Water 13.4 EER ARI/ISO-13256-1
Air Cooled

(Heating Mode)

< 65,000 Btu/h((d))

(Cooling Capacity)

Split System ARI 210/240
((Before January 23, 2006)) 6.8 HSPF
On or After January 23, 2006d ((7.4)) 7.7 HSPF
Single Package
((Before January 23, 2006)) 6.6 HSPF
On or After January 23, 2006d ((7.4)) 7.7 HSPF
≥ 65,000 Btu/h and

< 135,000 Btu/h

(Cooling Capacity)

47F db/43F wb Outdoor Air

17F db/15F wb Outdoor Air

3.2 COP


2.2 COP

≥ 135,000 Btu/h

(Cooling Capacity)

47F db/43F wb Outdoor Air

17F db/15F wb Outdoor Air

3.1 COP


2.0 COP

ARI 340/360

Through-the-Wall (Air Cooled, Heating Mode) < 30,000 Btu/h((d)) Split System ARI 210/240
((Before January 23, 2006)) 6.8 HSPF
On or After January 23, 2006d 7.1 HSPF
Single Package
((Before January 23, 2006)) 6.6 HSPF
On or After January 23, 2006d 7.0 HSPF
((Small-Duct High-Velocity (Air Cooled, Heating Mode) < 65,000 Btu/hd Split System 6.8 HSPF ARI 210/240))
Water-Source

(Heating Mode)

< 135,000 Btu/h

(Cooling Capacity)

68F Entering Water 4.2 COP ARI/ISO-13256-1
Groundwater-Source

(Heating Mode)

< 135,000 Btu/h

(Cooling Capacity)

50F Entering Water 3.6 COP ARI/ISO-13256-1
Ground Source

(Heating Mode)

< 135,000 Btu/h

(Cooling Capacity)

32F Entering Water 3.1 COP ARI/ISO-13256-1
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 Date of manufacture for single-phase air-cooled heat pumps < 65,000 Btu/h ((are)), as regulated by NAECA. SEER and HSPF values are those set by NAECA.


Table 14-1C

Water Chilling Packages, Minimum Efficiency Requirements



Equipment Type Size Category Sub-Category or Rating Condition Minimum

Efficiencyb

Test Procedurea
Air Cooled, With Condenser,

Electrically Operated

All Capacities 2.80 COP

3.05 IPLV

ARI 550/590
Air Cooled,

Without Condenser,

Electrically Operated

All Capacities 3.10 COP

3.45 IPLV

Water Cooled, Electrically Operated, Positive Displacement

(Reciprocating)

All Capacities 4.20 COP

5.05 IPLV

ARI 550/590
Water Cooled,

Electrically Operated,

Positive Displacement

(Rotary Screw and Scroll)

< 150 Tons 4.45 COP

5.20 IPLV

ARI 550/590
≥ 150 Tons and

< 300 Tons

4.90 COP

5.60 IPLV

≥ 300 Tons 5.50 COP

6.15 IPLV

Water Cooled, Electrically Operated, Centrifugal < 150 Tons 5.00 COP

5.25 IPLV

ARI 550/590
≥ 150 Tons and

< 300 Tons

5.55 COP

5.90 IPLV

≥ 300 Tons 6.10 COP

6.40 IPLV

Air Cooled Absorption

Single Effect

All Capacities 0.60 COP

Water Cooled Absorption

Single Effect

All Capacities 0.70 COP
Absorption Double Effect,

Indirect-Fired

All Capacities 1.00 COP

1.05 IPLV

ARI 560
Absorption Double Effect,

Direct-Fired

All Capacities 1.00 COP

1.00 IPLV

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.


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 Type Size Category (Input) Sub-Category or Rating Condition Minimum

Efficiencyb

Test Procedurea
PTAC (Cooling Mode)

New Construction

All Capacities 95F db Outdoor Air 12.5 - (0.213 x Cap/1000)b EER

PTAC (Cooling Mode) Replacementsc All Capacities 95F db Outdoor Air 10.9 - (0.213 x Cap/1000)b EER ARI 310/380
PTHP (Cooling Mode)

New Construction

All Capacities 95F db Outdoor Air 12.3 - (0.213 x Cap/1000)b EER
PTHP (Cooling Mode)

Replacementsc

All Capacities 95F db Outdoor Air 10.8 - (0.213 x Cap/1000)b EER
PTHP (Heating Mode)

New Construction

All Capacities

3.2 - (0.026 x Cap/1000)b COP
PTHP (Heating Mode)

Replacementsc

All Capacities 2.9 - (0.026 x Cap/1000)b COP

SPVAC (Cooling Mode) All Capacities 95F db/75F wb Outdoor Air 8.6 EER ARI-390
SPVHP (Cooling Mode) All Capacities 95F db/75F wb Outdoor Air 8.6 EER
SPVAC (Heating Mode) All Capacities 47F db/43F wb Outdoor Air 2.7 COP
Room Air Conditioners, with Louvered Sides < 6,000 Btu/h 9.7 EER ANSI/AHAM RAC-1
≥ 6,000 Btu/h and

< 8,000 Btu/h

9.7 EER
≥ 8,000 Btu/h and

< 14,000 Btu/h

9.8 EER
≥ 14,000 Btu/h and

< 20,000 Btu/h

9.7 EER
≥ 20,000 Btu/h 8.5 EER
Room Air Conditioners, without Louvered Sides < 8,000 Btu/h 9.0 EER
≥ 8,000 Btu/h and

< 20,000 Btu/h

8.5 EER
≥ 20,000 Btu/h 8.5 EER
Room Air Conditioner Heat Pumps with Louvered Sides < 20,000 Btu/h 9.0 EER
≥ 20,000 Btu/h 8.5 EER
Room Air Conditioner Heat Pumps without Louvered Sides < 14,000 Btu/h 8.5 EER
≥ 14,000 Btu/h 8.0 EER
Room Air Conditioner, Casement Only All Capacities 8.7 EER
Room Air Conditioner, Casement Slider All Capacities 9.5 EER
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.


Table 14-1E

Warm Air Furnaces and Combination Warm Air Furnaces/Air-Conditioning Units, Warm Air Duct Furnaces and Unit Heaters, Minimum Efficiency Requirements



Equipment Type Size Category (Input) Sub-Category or Rating Condition Minimum Efficiencyb Test Procedurea
Warm Air Furnace,

Gas-Fired

< 225,000 Btu/h

(66 kW)

78% AFUE or

80% Etc

DOE 10 CFR

Part 430 or

ANSI Z21.47

≥ 225,000 Btu/h

(66 kW)

Maximum Capacityc


Minimum Capacityc

80% Ecf ANSI Z21.47
Warm Air Furnace,

Oil-Fired

< 225,000 Btu/h

(66 kW)

78% AFUE or


80% Etc

DOE 10 CFR Part 430 or

UL 727

≥ 225,000 Btu/h

(66 kW)

Maximum Capacityb


Minimum Capacityb

81% Etg

____

UL 727
Warm Air

Duct Furnaces,

Gas-Fired

All Capacities Maximum Capacityb


Minimum Capacityb

80% Ece

____

ANSI Z83.9

Warm Air Unit Heaters,

Gas-Fired

All Capacities Maximum Capacityb


Minimum Capacityb

80% Ece

____

ANSI Z83.8

Warm Air

Unit Heaters,

Oil-Fired

All Capacities Maximum Capacityb


Minimum Capacityb

80% Ece

____

UL 731
a Reserved.

b Minimum and maximum ratings as provided for and allowed by the unit's controls.

c Combination units not covered by NAECA (3-phase power or cooling capacity greater than or equal to 65,000 Btu/h [19 kW]) may comply with either rating.

d Et = Thermal efficiency. See test procedure for detailed discussion.

e Ec = Combustion efficiency (100% less flue losses). See test procedure for detailed discussion.

f Ec = Combustion efficiency. Units must also include an IID, have jacket losses not exceeding 0.75% of the input rating, and have either power venting or a flue damper. A vent damper is an acceptable alternative to a flue damper for those furnaces where combustion air is drawn from the conditioned space.

g Et = Thermal efficiency. Units must also include an IID, have jacket losses not exceeding 0.75% of the input rating, and have either power venting or a flue damper. A vent damper is an acceptable alternative to a flue damper for those furnaces where combustion air is drawn from the conditioned space.


Table 14-1F

Boilers, Gas- and Oil-Fired, Minimum Efficiency Requirements



Equipment Typef Size Category Sub-Category or Rating Condition Minimum Efficiencyb Test Procedure
Boilers, Gas-Fired < 300,000 Btu/h Hot Water 80% AFUE DOE 10 CFR

Part 430

Steam 75% AFUE
≥ 300,000 Btu/h and ≤ 2,500,000 Btu/h Maximum Capacityb 75% Et

H.I. Htg Boiler Std

> 2,500,000 Btu/hf Hot Water 80% Ec
> 2,500,000 Btu/hf Steam 80% Ec
Boilers, Oil-Fired < 300,000 Btu/h 80% AFUE DOE 10 CFR

Part 430

≥ 300,000 Btu/h and ≤ 2,500,000 Btu/h Maximum Capacityb

78% Et

H.I. Htg Boiler Std

> 2,500,000 Btu/hf Hot Water 83% Ec
> 2,500,000 Btu/hf Steam 83% Ec
Oil-Fired (Residual) ≥ 300,000 Btu/h and

≤ 2,500,000 Btu/h

Maximum Capacityb 78% Et

H.I. Htg Boiler Std

> 2,500,000 Btu/hf Hot Water 83% Ec
> 2,500,000 Btu/hf Steam 83% Ec
a Reserved.

b Minimum and maximum ratings as provided for and allowed by the unit's controls.

c Ec = Combustion efficiency (100% less flue losses). See reference document for detailed information.

d Et = Thermal efficiency. See reference document for detailed information.

e Alternate test procedures used at the manufacturer's option are ASME PTC-4.1 for units over 5,000,000 Btu/h input, or ANSI Z21.13 for units greater than or equal to 300,000 Btu/h and less than or equal to 2,500,000 Btu/h input.

f These requirements apply to boilers with rated input of 8,000,000 Btu/h or less that are not packaged boilers, and to all packaged boilers. Minimum efficiency requirements for boilers cover all capacities of packaged boilers.


Table 14-1G

Performance Requirements for Heat Rejection Equipment



Equipment Type Total System Heat Rejection Capacity at Rated Conditions Sub-Category or Rating Condition Minimum Efficiencyb Test Procedurec
Propeller or Axial Fan Cooling Towers All 95F (35C) Entering Water

85F (29C) Leaving Water

75F (24C) wb Outdoor Air

≥38.2 gpm/hp CTI ATC-105

and

CTI STD-201

Centrifugal Fan Cooling Towers All 95F (35C) Entering Water

85F (29C) Leaving Water

75F (24C) wb Outdoor Air

≥ 20.0 gpm/hp CTI ATC-105

and

CTI STD-201

Air Cooled Condensers All 125F (52C) Condensing Temperature

R22 Test Fluid

190F (88C) Entering Gas Temperature

15F (8C) Subcooling

95F (35C) Entering Drybulb

≥176,000 Btu/hhp ARI 460
a For purposes of this table, cooling tower performance is defined as the maximum flow rating of the tower divided by the fan nameplate rated motor power.

b For purposes of this table air-cooled condenser performance is defined as the heat rejected from the refrigerant divided by the fan nameplate rated motor power.

c Reserved.



TABLE 14-2 RESERVED



TABLE 14-3 RESERVED

TABLE 14-4
Energy Efficient Electric Motors
Minimum Nominal Full-Load Efficiency


Open Motors Closed Motors
Synchronous

Speed (RPM)

3,600 1,800 1,200 3,600 1,800 1,200
HP Efficiency Efficiency Efficiency Efficiency Efficiency Efficiency
1.0 - 82.5 80.0 75.5 82.5 80.0
1.5 82.5 84.0 84.0 82.5 84.0 85.5
2.0 84.0 84.0 85.5 84.0 84.0 86.5
3.0 84.0 86.5 86.5 85.5 87.5 87.5
5.0 85.5 87.5 87.5 87.5 87.5 87.5
7.5 87.5 88.5 88.5 88.5 89.5 89.5
10.0 88.5 89.5 90.2 89.5 89.5 89.5
15.0 89.5 91.0 90.2 90.2 91.0 90.2
20.0 90.2 91.0 91.0 90.2 91.0 90.2
25.0 91.0 91.7 91.7 91.0 92.4 91.7
30.0 91.0 92.4 92.4 91.0 92.4 91.7
40.0 91.7 93.0 93.0 91.7 93.0 93.0
50.0 92.4 93.0 93.0 92.4 93.0 93.0
60.0 93.0 93.6 93.6 93.0 93.6 93.6
75.0 93.0 94.1 93.6 93.0 94.1 93.6
100.0 93.0 94.1 94.1 93.6 94.5 94.1
125.0 93.6 94.5 94.1 94.5 94.5 94.1
150.0 93.6 95.0 94.5 94.5 95.0 95.0
200.0 94.5 95.0 94.5 95.0 95.0 95.0

TABLE 14-5
Duct Insulation


Duct Type Duct Location Insulation

R-Value

Other

Requirements

Supply, Return Not within conditioned space: On exterior of building, on roof, in attic, in enclosed ceiling space, in walls, in garage, in crawl spaces R-7 Approved weather proof barrier
Outside air intake Within conditioned space R-7 See Section 1414.2
Supply, Return, Outside air intake Not within conditioned space: in concrete, in ground R-5.3
Supply with supply air temperature < 55F or

> 105F

Within conditioned space R-3.3
Note: Requirements apply to the duct type listed, whether heated or mechanically cooled. Mechanically cooled ducts requiring insulation shall have a vapor retarder, with a perm rating not greater than 0.5 and all joints sealed.

TABLE 14-6
Minimum Pipe Insulation (inches)1


Fluid Design

Operating

Temp. Range,

F

Insulation Conductivity Nominal Pipe Diameter (in.)
Conductivity Range

Btuin. / (hft2F)

Mean Rating

Temp. F

Runouts2

up to 2

1 and

less

> 1 to 2 > 2 to 4 > 4 to 6 > 6
Heating systems (Steam, Steam Condensate[,] and Hot water) Nominal Insulation Thickness
Above 350

251-350

201-250

141-200

105-140

0.32-0.34

0.29-0.31

0.27-0.30

0.25-0.29

0.24-0.28

250

200

150

125

100

1.5

1.5

1.0

0.5

0.5

2.5

2.0

1.5

1.5

1.0

2.5

2.5

1.5

1.5

1.0

3.0

2.5

2.0

1.5

1.0

3.5

3.5

2.0

1.5

1.5

3.5

3.5

3.5

1.5

1.5

Domestic and Service Hot Water Systems
105 and Greater 0.24-0.28 100 0.5 1.0 1.0 1.5 1.5 1.5
Cooling Systems (Chilled Water, Brine[,] and Refrigerant)
40-55

Below 40

0.23-0.27

0.23-0.27

75

75

0.5

1.0

0.5

1.0

0.75

1.5

1.0

1.5

1.0

1.5

1.0

1.5


1. Alternative Insulation Types. Insulation thicknesses in Table 14-6 are based on insulation with thermal conductivities within the range listed in Table14-6 for each fluid operating temperature range, rated in accordance with ASTM C 335-84 at the mean temperature listed in the table. For insulation that has a conductivity outside the range shown in Table 14-6 for the applicable fluid operating temperature range at the mean rating temperature shown (when rounded to the nearest 0.01 Btuin./(hft2F)), the minimum thickness shall be determined in accordance with the following equation:

T = PR[(1 + t/PR)K/k - 1]
Where

T = Minimum insulation thickness for material with conductivity K, inches.
PR = Pipe actual outside radius, inches.
t = Insulation thickness from Table 14-6, inches
K = conductivity of alternate material at the mean rating temperature indicated in Table 14-6 for the applicable fluid temperature range, Btuin./(hft2F)
k = the lower value of the conductivity range listed in Table 14-6 for the applicable fluid temperature range, Btu in./(hft2F)

2. Runouts to individual terminal units not exceeding 12 ft. in length.

[Statutory Authority: RCW 19.27A.025, 19.27A.045 and chapters 19.27, 19.27A, and 34.05 RCW. 05-01-013, 51-11-1454, filed 12/2/04, effective 7/1/05. Statutory Authority: RCW 19.27A.025, 19.27A.045. 02-01-112, 51-11-1454, filed 12/18/01, effective 7/1/02; 01-03-010, 51-11-1454, filed 1/5/01, effective 7/1/01; 98-03-003, 51-11-1454, filed 1/8/98, effective 7/1/98. Statutory Authority: RCW 19.27A.025. 93-21-052, 51-11-1454, filed 10/18/93, effective 4/1/94.]

Reviser's note: The brackets and enclosed material in the text of the above section occurred in the copy filed by the agency and appear in the Register pursuant to the requirements of RCW 34.08.040.