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C403.2.3 HVAC Equipment Performance Requirements

FBC, Energy Conservation 2014 > 4 [CE] Commercial Energy Efficiency > C403 Building Mechanical Systems > C403.2 Provisions Applicable to All Mechanical Systems (Mandatory) > C403.2.3 HVAC Equipment Performance Requirements

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Equipment shall meet the minimum efficiency requirements of Tables C403.2.3(1), C403.2.3(2), C403.2.3(3), C403.2.3(4), C403.2.3(5), C403.2.3(6), C403.2.3(7), C403.2.3(8), C403.2.3(10) and C403.2.3(11) when tested and rated in accordance with the applicable test procedure. Plate-type liquid-to-liquid heat exchangers shall meet the minimum requirements of Table C403.2.3(9). The efficiency shall be verified through certification under an approved certification program or, if no certification program exists, the equipment efficiency ratings shall be supported by data furnished by the manufacturer. Where multiple rating conditions or performance requirements are provided, the equipment shall satisfy all stated requirements. Where components, such as indoor or outdoor coils, from different manufacturers are used, calculations and supporting data shall be furnished by the designer that demonstrates that the combined efficiency of the specified components meets the requirements herein.

TABLE C403.2.3(1)
MINIMUM EFFICIENCY REQUIREMENTS:
ELECTRICALLY OPERATED UNITARY AIR CONDITIONERS AND CONDENSING UNITS

EQUIPMENT TYPE	SIZE CATEGORY	HEATING SECTION TYPE	SUBCATEGORY OR RATING CONDITION	MINIMUM EFFICIENCY	TEST PROCEDURE^a
Air conditioners, air cooled	< 65,000 Btu/h^b	All	Split System	13.0 SEER	AHRI 210/240
Air conditioners, air cooled	< 65,000 Btu/h^b	All	Single Package	13.0 SEER
Through-the-wall (air cooled)	≤ 30,000 Btu/h^b	All	Split system	12.0 SEER
Through-the-wall (air cooled)	≤ 30,000 Btu/h^b	All	Single Package	12.0 SEER
Small-duct high-velocity systems (air cooled)	< 65,000 Btu/h^b	All	Split System	11.0 SEER (before 1/1/2015) 12.0 SEER (as of 1/1/2015)
Air conditioners, air cooled	≥ 65,000 Btu/h and < 135,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	11.2 EER 11.4 IEER	AHRI 340/360
	≥ 65,000 Btu/h and < 135,000 Btu/h	All other	Split System and Single Package	11.0 EER 11.2 IEER
	≥ 135,000 Btu/h and < 240,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	11.0 EER 11.2 IEER
	≥ 135,000 Btu/h and < 240,000 Btu/h	All other	Split System and Single Package	10.8 EER 11.0 IEER
	≥ 240,000 Btu/h and < 760,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	10.0 EER 10.1 IEER
	≥ 240,000 Btu/h and < 760,000 Btu/h	All other	Split System and Single Package	9.8 EER 9.9 IEER
	≥ 760,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	9.7 EER 9.8 IEER
	≥ 760,000 Btu/h	All other	Split System and Single Package	9.5 EER 9.6 IEER
Air conditioners, water cooled	< 65,000 Btu/h^b	All	Split System and Single Package	12.1 EER 12.3 IEER	AHRI 210/240
	≥ 65,000 Btu/h and < 135,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	12.1 EER 12.3 IEER	AHRI 340/360
	≥ 65,000 Btu/h and < 135,000 Btu/h	All other	Split System and Single Package	11.9 EER 12.1 IEER
	≥ 135,000 Btu/h and < 240,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	12.5 EER 12.7 IEER
	≥ 135,000 Btu/h and < 240,000 Btu/h	All other	Split System and Single Package	12.3 EER 12.5 IEER
	≥ 240,000 Btu/h and < 760,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	12.4 EER 12.6 EER
	≥ 240,000 Btu/h and < 760,000 Btu/h	All other	Split System and Single Package	12.2 EER 12.4 EER
	≥ 760,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	12.2 EER 12.4 EER
	≥ 760,000 Btu/h	All other	Split System and Single Package	12.0 EER 12.2 EER

(continued)

TABLE C403.2.3(1)—continued
MINIMUM EFFICIENCY REQUIREMENTS:
ELECTRICALLY OPERATED UNITARY AIR CONDITIONERS AND CONDENSING UNITS

EQUIPMENT TYPE	SIZE CATEGORY	HEATING SECTION TYPE	SUB-CATEGORY OR RATING CONDITION	MINIMUM EFFICIENCY	TEST PROCEDURE^a
Air conditioners, evaporatively cooled	< 65,000 Btu/h^b	All	Split System and Single Package	12.1 EER 12.3 IEER	AHRI 210/240
	≥ 65,000 Btu/h and < 135,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	12.1 EER 12.3 IEER	AHRI 340/360
	≥ 65,000 Btu/h and < 135,000 Btu/h	All other	Split System and Single Package	11.9 EER 12.1 IEER
	≥ 135,000 Btu/h and < 240,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	12.0 EER 12.2 IEER
	≥ 135,000 Btu/h and < 240,000 Btu/h	All other	Split System and Single Package	11.8 EER 12.0 IEER
	≥ 240,000 Btu/h and < 760,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	11.9 EER 12.1 EER
	≥ 240,000 Btu/h and < 760,000 Btu/h	All other	Split System and Single Package	11.7 EER 11.9 EER
	≥ 760,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	11.7 EER 11.9 EER
	≥ 760,000 Btu/h	All other	Split System and Single Package	11.5 EER 11.7 EER
Condensing units, air cooled	≥ 135,000 Btu/h			10.5 EER 14.0 IEER	AHRI 365
Condensing units, water cooled	≥ 135,000 Btu/h			13.5 EER 14.0 IEER
Condensing units, evaporatively cooled	≥ 135,000 Btu/h			13.5 EER 14.0 IEER

For SI: 1 British thermal unit per hour = 0.2931 W.

a. Chapter 5, Referenced Standards, contains a complete specification of the referenced test procedure, including the reference year version of the test procedure.

b. Single-phase, air-cooled air conditioners less than 65,000 Btu/h are regulated by NAECA. SEER values are those set by NAECA.

TABLE C403.2.3(2)
MINIMUM EFFICIENCY REQUIREMENTS:
ELECTRICALLY OPERATED UNITARY AND APPLIED HEAT PUMPS

EQUIPMENT TYPE	SIZE CATEGORY	HEATING SECTION TYPE	SUBCATEGORY OR RATING CONDITION	MINIMUM EFFICIENCY	TEST PROCEDURE^a
Air cooled (cooling mode)	< 65,000 Btu/h^b	All	Split System	13.0 SEER	AHRI 210/240
Air cooled (cooling mode)	< 65,000 Btu/h^b	All	Single Packaged	13.0 SEER
Through-the-wall, space constrained air cooled	≤ 30,000 Btu/h^b	All	Split System	12.0 SEER
Through-the-wall, space constrained air cooled	≤ 30,000 Btu/h^b	All	Single Packaged	12.0 SEER
Small duct, high-velocity air cooled	< 65,000 Btu/h^b	All	Split System	11.0 SEER (before 1/1/2015) 12.0 SEER (as of 1/1/2015)
Air cooled (cooling mode)	≥ 65,000 Btu/h and < 135,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	11.0 EER 11.2 IEER	AHRI 340/360
	≥ 65,000 Btu/h and < 135,000 Btu/h	All other	Split System and Single Package	10.8 EER 11.0 IEER
	≥ 135,000 Btu/h and < 240,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	10.6 EER 10.7 IEER
	≥ 135,000 Btu/h and < 240,000 Btu/h	All other	Split System and Single Package	10.4 EER 10.5 IEER
	≥ 240,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	9.5 EER 9.6 IEER
	≥ 240,000 Btu/h	All other	Split System and Single Package	9.3 EER 9.4 IEER
Water source (cooling mode)	< 17,000 Btu/h	All	86°F entering water	11.2 EER	ISO 13256-1
	≥ 17,000 Btu/h and < 65,000 Btu/h	All	86°F entering water	12.0 EER
	≥ 65,000 Btu/h and < 135,000 Btu/h	All	86°F entering water	12.0 EER
Ground water source (cooling mode)	< 135,000 Btu/h	All	59°F entering water	16.2 EER
Ground water source (cooling mode)	< 135,000 Btu/h	All	77°F entering water	13.4 EER
Water-source water to water (cooling mode)	< 135,000 Btu/h	All	86°F entering water	10.6 EER	ISO 13256-2
Water-source water to water (cooling mode)	< 135,000 Btu/h	All	59°F entering water	16.3 EER
Ground water source, brine to water (cooling mode)	< 135,000 Btu/h	All	77°F entering fluid	12.1 EER
Air cooled (heating mode)	< 65,000 Btu/h^b	—	Split System	7.7 HSPF	AHRI 210/240
Air cooled (heating mode)	< 65,000 Btu/h^b	—	Single Package	7.7 HSPF
Through-the-wall, space constrained (air cooled, heating mode)	≤ 30,000 Btu/h^b (cooling capacity)	—	Split System	7.4 HSPF
	≤ 30,000 Btu/h^b (cooling capacity)	—	Single Package	7.4 HSPF
Small-duct high velocity (air cooled, heating mode)	< 65,000 Btu/h^b	—	Split System	6.8 HSPF (before 1/1/2015) 7.2 HSPF (as of 1/1/2015)

(continued)

TABLE C403.2.3(2)—continued
MINIMUM EFFICIENCY REQUIREMENTS:
ELECTRICALLY OPERATED UNITARY AND APPLIED HEAT PUMPS

EQUIPMENT TYPE	SIZE CATEGORY	HEATING SECTION TYPE	SUB-CATEGORY OR RATING CONDITION	MINIMUM EFFICIENCY	TEST PROCEDURE^a
Air cooled (heating mode)	≥ 65,000 Btu/h and < 135,000 Btu/h (cooling capacity)	—	47°F db/43°F wb outdoor air	3.3 COP	AHRI 340/360
	≥ 65,000 Btu/h and < 135,000 Btu/h (cooling capacity)	—	17°F db/15°F wb outdoor air	2.25 COP
	≥ 135,000 Btu/h (cooling capacity)	—	47°F db/43°F wb outdoor air	3.2 COP
	≥ 135,000 Btu/h (cooling capacity)	—	17°F db/15°F wb outdoor air	2.05 COP
Water source (heating mode)	< 135,000 Btu/h (cooling capacity)	—	68°F entering water	4.2 COP	ISO 13256-1
Ground water source (heating mode)	< 135,000 Btu/h (cooling capacity)	—	50°F entering water	3.6 COP
Ground source (heating mode)	< 135,000 Btu/h (cooling capacity)	—	32°F entering fluid	3.1 COP
Water-source water to water (heating mode)	< 135,000 Btu/h (cooling capacity)	—	68°F entering water	3.7 COP	ISO 13256-2
Water-source water to water (heating mode)	< 135,000 Btu/h (cooling capacity)	—	50°F entering water	3.1 COP
Ground source brine to water (heating mode)	< 135,000 Btu/h (cooling capacity)	—	32°F entering fluid	2.5 COP

For SI: 1 British thermal unit per hour = 0.2931 W, °C = [(°F) - 32]/1.8.

a. Chapter 5, Referenced Standards, contains a complete specification of the referenced test procedure, including the reference year version of the test procedure.

b. Single-phase, air-cooled air conditioners less than 65,000 Btu/h are regulated by NAECA. SEER values are those set by NAECA.

TABLE C403.2.3(3)
MINIMUM EFFICIENCY REQUIREMENTS:
ELECTRICALLY OPERATED PACKAGED TERMINAL AIR CONDITIONERS,
PACKAGED TERMINAL HEAT PUMPS, SINGLE-PACKAGE VERTICAL AIR CONDITIONERS,
SINGLE VERTICAL HEAT PUMPS, ROOM AIR CONDITIONERS AND ROOM AIR-CONDITIONER HEAT PUMPS

EQUIPMENT TYPE	SIZE CATEGORY (INPUT)	SUBCATEGORY OR RATING CONDITION	MINIMUM EFFICIENCY	TEST PROCEDURE^a
PTAC (cooling mode) new construction	All Capacities	95°F db outdoor air	13.8 - (0.300 × Cap/1000) EER	AHRI 310/380
PTAC (cooling mode) replacementsb	All Capacities	95°F db outdoor air	10.9 - (0.213 × Cap/1000) EER
PTHP (cooling mode) new construction	All Capacities	95°F db outdoor air	14.0 - (0.300 × Cap/1000) EER
PTHP (cooling mode) replacementsb	All Capacities	95°F db outdoor air	10.8 - (0.213 × Cap/1000) EER
PTHP (heating mode) new construction	All Capacities	—	3.7 - (0.052 × Cap/1000) COP
PTHP (heating mode) replacementsb	All Capacities	—	2.9 - (0.026 × Cap/1000) COP
SPVAC (cooling mode)	< 65,000 Btu/h	95°F db/ 75°F wb outdoor air	9.0 EER	AHRI 390
	≥ 65,000 Btu/h and < 135,000 Btu/h	95°F db/ 75°F wb outdoor air	8.9 EER
	≥ 135,000 Btu/h and < 240,000 Btu/h	95°F db/ 75°F wb outdoor air	8.6 EER
SPVHP (cooling mode)	< 65,000 Btu/h	95°F db/ 75°F wb outdoor air	9.0 EER
	≥ 65,000 Btu/h and < 135,000 Btu/h	95°F db/ 75°F wb outdoor air	8.9 EER
	≥ 135,000 Btu/h and < 240,000 Btu/h	95°F db/ 75°F wb outdoor air	8.6 EER
SPVHP (heating mode)	<65,000 Btu/h	47°F db/ 43°F wb outdoor air	3.0 COP	AHRI 390
	≥ 65,000 Btu/h and < 135,000 Btu/h	47°F db/ 43°F wb outdoor air	3.0 COP
	≥ 135,000 Btu/h and < 240,000 Btu/h	47°F db/ 75°F wb outdoor air	2.9 COP

(continued)

TABLE C403.2.3(3)—continued
MINIMUM EFFICIENCY REQUIREMENTS:
ELECTRICALLY OPERATED PACKAGED TERMINAL AIR CONDITIONERS,
PACKAGED TERMINAL HEAT PUMPS, SINGLE-PACKAGE VERTICAL AIR CONDITIONERS,
SINGLE VERTICAL HEAT PUMPS, ROOM AIR CONDITIONERS AND ROOM AIR-CONDITIONER HEAT PUMPS

EQUIPMENT TYPE	SIZE CATEGORY (INPUT)	SUBCATEGORY OR RATING CONDITION	MINIMUM EFFICIENCY	TEST PROCEDURE^a
Room air conditioners, with louvered slides	< 6,000 Btu/h	—	9.7 SEER	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 SEER
	≥ 20,000 Btu/h	—	8.5 EER
Room air conditioners, without louvered slides	< 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
Room air-conditioner heat pumps with louvered sides	≥ 20,000 Btu/h	—	8.5 EER
Room air-conditioner heat pumps without louvered sides	< 14,000 Btu/h	—	8.5 EER
Room air-conditioner heat pumps without louvered sides	≥ 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

For SI: 1 British thermal unit per hour = 0.2931 W, °C = [(°F) - 32]/1.8.

“Cap” = 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 calculations.

a. Chapter 5, Referenced Standards, contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.

b. Replacement unit shall 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 inches (406 mm) in height and less than 42 inches (1067 mm) in width.

TABLE C403.2.3(4)
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)	SUBCATEGORY OR RATING CONDITION	MINIMUM EFFICIENCY^{d, e}	TEST PROCEDURE^a
Warm air furnaces, gas fired
Nonweatherized	< 225,000 Btu/h	—	80% AFUE or 80%E_t^c 81% AFUE (Effective 1/1/15)	DOE 10 CFR Part 430 or ANSI Z21.47
Weatherized gas furnace	≥ 225,000 Btu/h	Maximum capacity^c	80%E_t^f	ANSI Z21.47
Warm air furnaces, oil fired
Nonweatherized	< 225,000 Btu/h	—	83% AFUE or 80%E_t^c 78% AFUE (Effective 1/1/15)	DOE 10 CFR Part 430 or UL 727
Weatherized oil-fired furnace	≥ 225,000 Btu/h	Maximum capacity^b	81%E_t^g	UL 727
Warm air duct furnaces, gas fired	All capacities	Maximum capacity^b	80%E_c	ANSI Z83.8
Warm air unit heaters, gas fired	All capacities	Maximum capacity^b	80%E_c	ANSI Z83.8
Warm air unit heaters, oil fired	All capacities	Maximum capacity^b	80%E_c	UL 731
Mobile home furnace, gas-fired	< 225,000 Btu/h		80% AFUE (Effective 1/1/15)	DOE 10 CFR Part 430
Mobile home furnace, oil-fired	< 225,000 Btu/h		75% AFUE (Effective 1/1/15)	DOE 10 CFR Part 430

For SI: 1 British thermal unit per hour = 0.2931 W.

a. Chapter 5, Referenced Standards, contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.

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

c. Combination units not covered by the National Appliance Energy Conservation Act of 1987 (NAECA) (3-phase power or cooling capacity greater than or equal to 65,000 Btu/h [19 kW]) shall comply with either rating.

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

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

f. E_c = Combustion efficiency. Units must also include an IID, have jackets not exceeding 0.75 percent 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. E_t = Thermal efficiency. Units must also include an IID, have jacket losses not exceeding 0.75 percent 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 C403.2.3(5)
MINIMUM EFFICIENCY REQUIREMENTS: GAS- AND OIL-FIRED BOILERS

EQUIPMENT TYPE^a	SUBCATEGORY OR RATING CONDITION	SIZE CATEGORY (INPUT)	MINIMUM EFFICIENCY	TEST PROCEDURE
Boilers, hot water	Gas-fired	< 300,000 Btu/h	80% AFUE	10 CFR Part 430
		≥ 300,000 Btu/h and ≤ 2,500,000 Btu/hb	80% Et	10 CFR Part 431
		> 2,500,00 Btu/ha	82% Ec	10 CFR Part 431
	Oil-fired^c	< 300,000 Btu/h	80% AFUE	10 CFR Part 430
		≥ 300,000 Btu/h and ≤ 2,500,000 Btu/hb	82% Et	10 CFR Part 431
		> 2,500,000 Btu/ha	84% Ec	10 CFR Part 431
Boilers, steam	Gas-fired	< 300,000 Btu/h	75% AFUE	10 CFR Part 430
	Gas-fired- all, except natural draft	≥ 300,000 Btu/h and ≤ 2,500,000 Btu/hb	79% Et	10 CFR Part 431
	Gas-fired- all, except natural draft	> 2,500,000 Btu/ha	79% Et
	Gas-fired-natural draft	≥ 300,000 Btu/h and ≤ 2,500,000 Btu/hb	77% Et
	Gas-fired-natural draft	> 2,500,000 Btu/ha	77% Et
	Oil-fired^c	< 300,000 Btu/h	80% AFUE	10 CFR Part 430
		≥ 300,000 Btu/h and ≤ 2,500,000 Btu/hb	81% Et	10 CFR Part 431
		> 2,500,000 Btu/ha	81% Et	10 CFR Part 431

For SI: 1 British thermal unit per hour = 0.2931 W.

E_c = Combustion efficiency (100 percent less flue losses). E_t = Thermal efficiency. See referenced standard document for detailed information.

a. 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.

b. Maximum capacity – minimum and maximum ratings as provided for and allowed by the unit’s controls.

c. Includes oil-fired (residual).

TABLE C403.2.3(6)
MINIMUM EFFICIENCY REQUIREMENTS:
CONDENSING UNITS, ELECTRICALLY OPERATED

EQUIPMENT TYPE	SIZE CATEGORY	MINIMUM EFFICIENCY^b	TEST PROCEDURE^a
Condensing units, air cooled	≥ 135,000 Btu/h	10.1 EER 11.2 IPLV	AHRI 365
Condensing units, water or evaporatively cooled	≥ 135,000 Btu/h	13.1 EER 13.1 IPLV	AHRI 365

For SI: 1 British thermal unit per hour = 0.2931 W.

a. Chapter 6 of the referenced standard contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.

b. IPLVs are only applicable to equipment with capacity modulation.

TABLE C403.2.3(7)
MINIMUM EFFICIENCY REQUIREMENTS:
WATER CHILLING PACKAGES^a

EQUIPMENT TYPE	SIZE CATEGORY	UNITS	PATH A		PATH B		TEST PROCEDURE^c
EQUIPMENT TYPE	SIZE CATEGORY	UNITS	FULL LOAD	IPLV	FULL LOAD	IPLV	TEST PROCEDURE^c
Air-cooled chillers	< 150 tons	EER	≥ 9.562	≥ 12.500	NA	NA	AHRI 550/590
Air-cooled chillers	≥ 150 tons	EER	≥ 9.562	≥ 12.750	NA	NA
Air cooled without condenser, electrical operated	All capacities	EER	Air-cooled chillers without condensers shall be rated with matching condensers and comply with the air-cooled chiller efficiency requirements
Water cooled, electrically operated, reciprocating	All capacities	kW/ton	Reciprocating units shall comply with water cooled positive displacement efficiency requirements
Water cooled, electrically operated, positive displacement	< 75 tons	kW/ton	≤ 0.780	≤ 0.630	≤ 0.800	≤ 0.600
	≥ 75 tons and < 150 tons	kW/ton	≤ 0.775	≤ 0.615	≤ 0.790	≤ 0.586
	≥ 150 tons and < 300 tons	kW/ton	≤ 0.680	≤ 0.580	≤ 0.718	≤ 0.540
	≥ 300 tons	kW/ton	≤ 0.620	≤ 0.540	≤ 0.639	≤ 0.490
Water cooled, electrically operated, centrifugal	< 150 tons	kW/ton	≤ 0.634	≤ 0.596	≤ 0.639	≤ 0.450
	≥ 150 tons and < 300 tons	kW/ton	≤ 0.634	≤ 0.596	≤ 0.639	≤ 0.450
	≥ 300 tons and < 600 tons	kW/ton	≤ 0.576	≤ 0.549	≤ 0.600	≤ 0.400
	≥ 600 tons	kW/ton	≤ 0.570	≤ 0.539	≤ 0.590	≤ 0.400
Air cooled, absorption single effect	All capacities	COP	≥ 0.600	NR	NA	NA	AHRI 560
Water cooled, absorption single effect	All capacities	COP	≥ 0.700	NR	NA	NA
Absorption double effect, indirect fired	All capacities	COP	≥ 1.000	≥ 1.050	NA	NA
Absorption double effect, direct fired	All capacities	COP	≥ 1.000	≥ 1.000	NA	NA

For SI: 1 ton = 3517 W, 1 British thermal unit per hour = 0.2931 W, °C = [(°F) - 32]/1.8.

NA = Not applicable, not to be used for compliance; NR = No requirement.

a. The centrifugal chiller equipment requirements, after adjustment in accordance with Section C403.2.3.1 or Section C403.2.3.2, do not apply to chillers used in low-temperature applications where the design leaving fluid temperature is less than 36°F. The requirements do not apply to positive displacement chillers with leaving fluid temperatures less than or equal to 32°F. The requirements do not apply to absorption chillers with design leaving fluid temperatures less than 40°F.

b. Compliance with this standard can be obtained by meeting the minimum requirements of Path A or B. However, both the full load and IPLV shall be met to fulfill the requirements of Path A or B.

c. Chapter 5, Referenced Standards, contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.

TABLE C403.2.3(8)
MINIMUM EFFICIENCY REQUIREMENTS:
HEAT REJECTION EQUIPMENT

EQUIPMENT TYPE^a	TOTAL SYSTEM HEAT REJECTION CAPACITY AT RATED CONDITIONS	SUBCATEGORY OR RATING CONDITION	PERFORMANCE REQUIRED^{b, c, d}	TEST PROCEDURE^{e, f}
Propeller or axial fan open circuit cooling towers	All	95°F Entering Water 85°F Leaving Water 75°F Entering wb	≥ 38.2 gpm/hp	CTI ATC-105 and CTISTD-201
Centrifugal fan open circuit cooling towers	All	95°F Entering Water 85°F Leaving Water 75°F Entering wb	≥ 20.0 gpm/hp	CTI ATC-105 and CTI STD-201
Propeller or axial fan closed circuit cooling towers	All	102°F Entering Water 90°F Leaving Water 75°F Entering wb	≥ 14.0 gpm/hp	CTI ATC-105S and CTI STD-201
Centrifugal closed circuit cooling towers	All	102°F Entering Water 90°F Leaving Water 75°F Entering wb	≥ 7.0 gpm/hp	CTI ATC-105S and CTI STD-201
Air-cooled condensers	All	125°F Condensing Temperature R-22 Test Fluid 190°F Entering Gas Temperature 15°F Subcooling 95°F Entering db	≥ 176,000 Btu/h•hp	AHRI 460

For SI: °C = [(°F)-32]/1.8, L/s • kW = (gpm/hp)/(11.83), COP = (Btu/h • hp)/(2550.7).

db = dry bulb temperature, °F, wb = wet bulb temperature, °F.

a. The efficiencies and test procedures for both open and closed circuit cooling towers are not applicable to hybrid cooling towers that contain a combination of wet and dry heat exchange sections.

b. For purposes of this table, open circuit cooling tower performance is defined as the water flow rating of the tower at the thermal rating condition listed in Table 403.2.3(8) divided by the fan nameplate rated motor power.

c. For purposes of this table, closed circuit cooling tower performance is defined as the water flow rating of the tower at the thermal rating condition listed in Table 403.2.3(8) divided by the sum of the fan nameplate rated motor power and the spray pump nameplate rated motor power.

d. 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.

e. Chapter 6 of the referenced standard contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.

f. If a certification program exists for a covered product, and it includes provisions for verification and challenge of equipment efficiency ratings, then the product shall be listed in the certification program, or, if a certification program exists for a covered product, and it includes provisions for verification and challenge of equipment efficiency ratings, but the product is not listed in the existing certification program, the ratings shall be verified by an independent laboratory test report.

TABLE C403.2.3(9)
HEAT TRANSFER EQUIPMENT

EQUIPMENT TYPE	SUBCATEGORY	MINIMUM EFFICIENCY	TEST PROCEDURE^a
Liquid-to-liquid heat exchangers	Plate type	NR	AHRI 400

NR = No Requirement

a. Chapter 6 of the referenced standard contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.

TABLE C403.2.3(10)
MINIMUM EFFICIENCY AIR CONDITIONERS AND CONDENSING UNITS SERVING COMPUTER ROOMS

EQUIPMENT TYPE	NET SENSIBLE COOLING CAPACITY^a	MINIMUM SCOP-127^b EFFICIENCY DOWNFLOW UNITS/UPFLOW UNITS	TEST PROCEDURE^a
Air conditioners, air cooled	<65,000 Btu/h	2.20/2.09	ANSI/ASHRAE 127
	≥ 65,000 Btu/h and < 240,000 Btu/h	2.10/1.99
	≥ 240,000 Btu/h	1.90/1.79
Air conditioners, water cooled	< 65,000 Btu/h	2.60/2.49
	≥ 65,000 Btu/h and < 240,000 Btu/h	2.50/2.39
	≥ 240,000 Btu/h	2.40/2.29
Air conditioners, water cooled with fluid economizer	< 65,000 Btu/h	2.55/2.44
	≥ 65,000 Btu/h and < 240,000 Btu/h	2.45/2.34
	≥ 240,000 Btu/h	2.35/2.24
Air conditioners, glycol cooled (rated at 40% propylene glycol)	< 65,000 Btu/h	2.50/2.39
	≥ 65,000 Btu/h and < 240,000 Btu/h	2.15/2.04
	≥ 240,000 Btu/h	2.10/1.99
Air conditioners, glycol cooled (rated at 40% propylene glycol) with fluid economizer	< 65,000 Btu/h	2.45/2.34
	≥ 65,000 Btu/h and < 240,000 Btu/h	2.10/1.99
	≥ 240,000 Btu/h	2.05/1.94

NR = No Requirement.

a. Net sensible cooling capacity: The total gross cooling capacity less the latent cooling less the energy to the air movement system. (Total Gross – latent – Fan Power).

b. Sensible coefficient of performance (SCOP-127): a ratio calculated by dividing the net sensible cooling capacity in watts by the total power input in watts (excluding reheaters and humidifiers) at conditions defined in ASHRAE Standard 127. The net sensible cooling capacity is the gross sensible capacity minus the energy dissipated into the cooled space by the fan system.

TABLE C403.2.3(11)
MINIMUM EFFICIENCY REQUIREMENTS VARIABLE REFRIGERANT FLOW MULTI-SPLIT AIR CONDITIONERS AND HEAT PUMPS

EQUIPMENT TYPE	SIZE CATEGORY	HEATING TYPE^a	MINIMUM EFFICIENCY	TEST PROCEDURE^b
VRF multi-split air conditioners (air-cooled)	< 65,000 Btu/h	All	13.0 SEER	AHRI 1230 (omit Sections 5.1.2 and 6.6)
	≥ 65,000 Btu/h and < 135,000 Btu/h	Electric resistance (or none)	11.2 EER
	≥ 65,000 Btu/h and < 135,000 Btu/h	All other	11.0 EER
	≥ 240,000 Btu/h and < 760,000 Btu/h	Electric resistance (or none)	10.0 EER
	≥ 240,000 Btu/h and < 760,000 Btu/h	All other	9.8 EER
	≥ 135,000 Btu/h and < 240,000 Btu/h	Electric resistance (or none)	11.0 EER
	≥ 135,000 Btu/h and < 240,000 Btu/h	All other	10.8 EER
	≥ 240,000 Btu/h and < 760,000 Btu/h	Electric resistance (or none)	10.0 EER
	≥ 240,000 Btu/h and < 760,000 Btu/h	All other	9.8 EER
VRF multi-split heat pumps (air-cooled)	< 65,000 Btu/h	All	13.0 SEER 7.7 HSPF
	≥ 65,000 Btu/h and < 135,000 Btu/h	Electric resistance (or none)	11.0 EER 3.3 COP
	≥ 65,000 Btu/h and < 135,000 Btu/h	All other	10.8 EER 3.3 COP
	≥ 135,000 Btu/h and < 240,000 Btu/h	Electric resistance (or none)	10.6 EER 3.2 COP
	≥ 135,000 Btu/h and < 240,000 Btu/h	All other	10.4 EER 3.2 COP
	≥ 240,000 Btu/h and < 760,000 Btu/h	Electric resistance (or none)	9.5 EER 3.2 COP
	≥ 240,000 Btu/h and < 760,000 Btu/h	All other	9.8 EER
VRF multi-split air conditioners (water-source)	< 17,000 Btu/h	Without heat recovery	12.0 EER 4.2 COP
	< 17,000 Btu/h	With heat recovery	11.8 EER 4.2 COP
	≥ 17,000 Btu/h and < 65,000 Btu/h	All	12.0 EER 4.2 COP
	≥ 65,000 Btu/h and < 135,000 Btu/h	All	12.0 EER 4.2 COP
	≥ 135,000 Btu/h and < 760,000 Btu/h	Without heat recovery	10.0 EER 3.9 COP
	≥ 135,000 Btu/h and < 760,000 Btu/h	With heat recovery	9.8 EER 3.9 COP

For SI: 1 British thermal unit per hour = 0.2931 W, °C = [(°F) – 32]/1.8.

a. VRAF multi-split heat pumps (air-cooled) with heat recovery fall under the category of “All other types of heating” unless they also have electric resistance heating, in which case it falls under the category for “No heating or electric resistance heating.”

b. Chapter 5, Referenced Standards, contains a complete specification of the referenced test procedure, including the reference year version of the test procedure.

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