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C403.2.3 HVAC equipment performance requirements

Residential Energy Conservation Code 2018 of Utah > 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) and C403.2.3(9) 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(10). The efficiency shall be verified through certification under an approved certification program or, where a certification program does not exist, 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
EQUIPMENT TYPE	SIZE CATEGORY	HEATING SECTION TYPE	SUBCATEGORY OR RATING CONDITION	Before 1/1/2016	As of 1/1/2016	TEST PROCEDURE^a
Air conditioners, air cooled	< 65,000 Btu/h^b	All	Split System	13.0 SEER	13.0 SEER	AHRI 210/240
Air conditioners, air cooled	< 65,000 Btu/h^b	All	Single Package	13.0 SEER	14.0 SEERc
Through-the-wall (air cooled)	≤ 30,000 Btu/h^b	All	Split system	12.0 SEER	12.0 SEER
Through-the-wall (air cooled)	≤ 30,000 Btu/h^b	All	Single Package	12.0 SEER	12.0 SEER
Small-duct high-velocity (air cooled)	< 65,000 Btu/h^b	All	Split System	11.0 SEER	11.0 SEER
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	11.2 EER 12.8 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	11.0 EER 12.6 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	11.0 EER 12.4 IEER
	≥ 135,000 Btu/h and < 240,000 Btu/h	All other	Split System and Single Package	10.8 EER 11.0 IEER	10.8 EER 12.2 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	10.0 EER 11.6 IEER
	≥ 240,000 Btu/h and < 760,000 Btu/h	All other	Split System and Single Package	9.8 EER 9.9 IEER	9.8 EER 11.4 IEER
	≥ 760,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	9.7 EER 9.8 IEER	9.7 EER 11.2 IEER
	≥ 760,000 Btu/h	All other	Split System and Single Package	9.5 EER 9.6 IEER	9.5 EER 11.0 IEER
Air conditioners, water cooled	< 65,000 Btu/h^b	All	Split System and Single Package	12.1 EER 12.3 IEER	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	12.1 EER 13.9 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	11.9 EER 13.7 IEER
	≥ 135,000 Btu/h and < 240,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	12.5 EER 12.5 IEER	12.5 EER 13.9 IEER
	≥ 135,000 Btu/h and < 240,000 Btu/h	All other	Split System and Single Package	12.3 EER 12.5 IEER	12.3 EER 13.7 IEER
	≥ 240,000 Btu/h and < 760,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	12.4 EER 12.6 IEER	12.4 EER 13.6 IEER
	≥ 240,000 Btu/h and < 760,000 Btu/h	All other	Split System and Single Package	12.2 EER 12.4 IEER	12.2 EER 13.4 IEER
	≥ 760,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	12.2 EER 12.4 IEER	12.2 EER 13.5 IEER
	≥ 760,000 Btu/h	All other	Split System and Single Package	12.0 EER 12.2 IEER	12.0 EER 13.3 IEER
Air conditioners, evaporatively cooled	< 65,000 Btu/h^b	All	Split System and Single Package	12.1 EER 12.3 IEER	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	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	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	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	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 IEER	11.9 EER 12.1 IEER
	≥ 240,000 Btu/h and < 760,000 Btu/h	All other	Split System and Single Package	11.7 EER 11.9 IEER	11.7 EER 11.9 IEER
	≥ 760,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	11.7 EER 11.9 IEER	11.7 EER 11.9 IEER
	≥ 760,000 Btu/h	All other	Split System and Single Package	11.5 EER 11.7 IEER	11.5 EER 11.7 IEER
Condensing units, air cooled	≥ 135,000 Btu/h			10.5 EER 11.8 IEER	10.5 EER 11.8 IEER	AHRI 365
Condensing units, water cooled	≥ 135,000 Btu/h			13.5 EER 14.0 IEER	13.5 EER 14.0 IEER
Condensing units, evaporatively cooled	≥ 135,000 Btu/h			13.5 EER 14.0 IEER	13.5 EER 14.0 IEER

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

Chapter 6 contains a complete specification of the referenced test procedure, including the reference year version of the test procedure.
Single-phase, air-cooled air conditioners less than 65,000 Btu/h are regulated by NAECA. SEER values are those set by NAECA.
Minimum efficiency as of January 1, 2015.

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
EQUIPMENT TYPE	SIZE CATEGORY	HEATING SECTION TYPE	SUBCATEGORY OR RATING CONDITION	Before 1/1/2016	As of 1/1/2016	TEST PROCEDURE^a
Air cooled (cooling mode)	< 65,000 Btu/h^b	All	Split System	13.0 SEER^c	14.0 SEER^c	AHRI 210/240
Air cooled (cooling mode)	< 65,000 Btu/h^b	All	Single Package	13.0 SEER^c	14.0 SEER^c
Through-the-wall, air cooled	≤ 30,000 Btu/h^b	All	Split System	12.0 SEER	12.0 SEER
Through-the-wall, air cooled	≤ 30,000 Btu/h^b	All	Single Package	12.0 SEER	12.0 SEER
Single-duct high-velocity air cooled	< 65,000 Btu/h^b	All	Split System	11.0 SEER	11.0 SEER
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	11.0 EER 12.0 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	10.8 EER 11.8 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	10.6 EER 11.6 IEER
	≥ 135,000 Btu/h and < 240,000 Btu/h	All other	Split System and Single Package	10.4 EER 10.5 IEER	10.4 EER 11.4 IEER
	≥ 240,000 Btu/h	Electric Resistance (or None)	Split System and Single Package	9.5 EER 9.6 IEER	9.5 EER 10.6 IEER
	≥ 240,000 Btu/h	All other	Split System and Single Package	9.3 EER 9.4 IEER	9.3 EER 9.4 IEER
Water to Air: Water Loop (cooling mode)	< 17,000 Btu/h	All	86°F entering water	12.2 EER	12.2 EER	ISO 13256-1
	≥ 17,000 Btu/h and < 65,000 Btu/h	All	86°F entering water	13.0 EER	13.0 EER
	≥ 65,000 Btu/h and < 135,000 Btu/h	All	86°F entering water	13.0 EER	13.0 EER
Water to Air: Ground Water (cooling mode)	< 135,000 Btu/h	All	59°F entering water	18.0 EER	18.0 EER	ISO 13256-1
Brine to Air: Ground Loop (cooling mode)	< 135,000 Btu/h	All	77°F entering water	14.1 EER	14.1 EER	ISO 13256-1
Water to Water: Water Loop (cooling mode)	< 135,000 Btu/h	All	86°F entering water	10.6 EER	10.6 EER	ISO 13256-2
Water to Water: Ground Water (cooling mode)	< 135,000 Btu/h	All	59°F entering water	16.3 EER	16.3 EER
Brine to Water: Ground Loop (cooling mode)	< 135,000 Btu/h	All	77°F entering fluid	12.1 EER	12.1 EER
Air cooled (heating mode)	< 65,000 Btu/h^b	—	Split System	7.7 HSPF^c	8.2 HSPF^c	AHRI 210/240
Air cooled (heating mode)	< 65,000 Btu/h^b	—	Single Package	7.7 HSPF^c	8.0 HSPF^c
Through-the-wall, (air cooled, heating mode)	≤ 30,000 Btu/h^b (cooling capacity)	—	Split System	7.4 HSPF	7.4 HSPF
Through-the-wall, (air cooled, heating mode)	≤ 30,000 Btu/h^b (cooling capacity)	—	Single Package	7.4 HSPF	7.4 HSPF
Small-duct high velocity (air cooled, heating mode)	< 65,000 Btu/h^b	—	Split System	6.8 HSPF	6.8 HSPF
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	3.3 COP	AHRI 340/360
	≥ 65,000 Btu/h and < 135,000 Btu/h (cooling capacity)	—	17°Fdb/15°F wb outdoor air	2.25 COP	2.25 COP
	≥ 135,000 Btu/h (cooling capacity)	—	47°F db/43°F wb outdoor air	3.2 COP	3.2 COP
	≥ 135,000 Btu/h (cooling capacity)	—	17°Fdb/15°F wb outdoor air	2.05 COP	2.05 COP
Water to Air: Water Loop (heating mode)	< 135,000 Btu/h (cooling capacity)	—	68°F entering water	4.3 COP	4.3 COP	ISO 13256-1
Water to Air: Ground Water (heating mode)	< 135,000 Btu/h (cooling capacity)	—	50°F entering water	3.7 COP	3.7 COP
Brine to Air: Ground Loop (heating mode)	< 135,000 Btu/h (cooling capacity)	—	32°F entering fluid	3.2 COP	3.2 COP
Water to Water: Water Loop (heating mode)	< 135,000 Btu/h (cooling capacity)	—	68°F entering water	3.7 COP	3.7 COP	ISO 13256-2
Water to Water: Ground Water (heating mode)	< 135,000 Btu/h (cooling capacity)	—	50°F entering water	3.1 COP	3.1 COP
Brine to Water: Ground Loop (heating mode)	< 135,000 Btu/h (cooling capacity)	—	32°F entering fluid	2.5 COP	2.5 COP

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

Chapter 6 contains a complete specification of the referenced test procedure, including the reference year version of the test procedure.
Single-phase, air-cooled air conditioners less than 65,000 Btu/h are regulated by NAECA. SEER values are those set by NAECA.
Minimum efficiency as of January 1, 2015.

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	14.0 — (0.300 × Cap/1000) EER^c	AHRI 310/380
PTAC (cooling mode) replacements^b	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) replacements^b	All Capacities	95°F db outdoor air	10.8 - (0.213 × Cap/1000) EER
PTHP (heating mode) new construction	All Capacities	—	3.2 - (0.026 × Cap/1000) COP
PTHP (heating mode) replacements^b	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
Room air conditioners, with louvered sides	< 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 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
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	ANSI/AHAM RAC-1
Room air conditioner casement-slider	All capacities	—	9.5 EER	ANSI/AHAM RAC-1

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

“Cap” = The rated cooling capacity of the project in Btu/h. Where the unit’s capacity is less than 7000 Btu/h, use 7000 Btu/h in the calculation. Where the unit’s capacity is greater than 15,000 Btu/h, use 15,000 Btu/h in the calculations.

Chapter 6 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
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.
Before January 1, 2015 the minimum efficiency shall be 13.8 - (0.300 x Cap/1000) EER.

TABLE 403.2.3(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	< 225,000 Btu/h	—	78% AFUE or 80%E_t^c	DOE 10 CFR Part 430 or ANSI Z21.47
Warm-air furnaces, gas fired	≥ 225,000 Btu/h	Maximum capacity^c	80%E_t^f	ANSI Z21.47
Warm-air furnaces, oil fired	< 225,000 Btu/h	—	78% AFUE or 80%E_t^c	DOE 10 CFR Part 430 or UL 727
Warm-air furnaces, oil fired	≥ 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

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

Chapter 6 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
Minimum and maximum ratings as provided for and allowed by the unit’s controls.
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.
E_t = Thermal efficiency. See test procedure for detailed discussion.
E_c = Combustion efficiency (100% less flue losses). See test procedure for detailed discussion.
E_c = Combustion efficiency. Units shall 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.
E_t = Thermal efficiency. Units shall 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^{d, e}	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/h^b	80% E_t	10 CFR Part 431
		> 2,500,000 Btu/h^a	82% E_c	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/h^b	82% E_t	10 CFR Part 431
		> 2,500,000 Btu/h^a	84% E_c	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/h^b	79% E_t	10 CFR Part 431
	Gas-fired- all, except natural draft	> 2,500,000 Btu/h^a	79% E_t
	Gas-fired-natural draft	≥ 300,000 Btu/h and ≤ 2,500,000 Btu/h^b	77% E_t
	Gas-fired-natural draft	> 2,500,000 Btu/h^a	77% E_t
	Oil-fired^c	< 300,000 Btu/h	80% AFUE	10 CFR Part 430
		≥ 300,000 Btu/h and ≤ 2,500,000 Btu/h^b	81% E_t	10 CFR Part 431
		> 2,500,000 Btu/h^a	81% E_t	10 CFR Part 431

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

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.
Maximum capacity – minimum and maximum ratings as provided for and allowed by the unit’s controls.
Includes oil-fired (residual).
E_c = Combustion efficiency (100 percent less flue losses).
E_t = Thermal efficiency. See referenced standard for detailed information.

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.

Chapter 6 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
IPLVs are only applicable to equipment with capacity modulation.

TABLE C403.2.3(7)

WATER CHILLING PACKAGES — EFFICIENCY REQUIREMENTS^{a, b, d}

EQUIPMENT TYPE	SIZE CATEGORY	UNITS	BEFORE 1/1/2015		AS OF 1/1/2015		TEST PROCEDURE^c
EQUIPMENT TYPE	SIZE CATEGORY	UNITS	Path A	Path B	Path A	Path B	TEST PROCEDURE^c
Air-cooled chillers	< 150 Tons	EER (Btu/W)	≥ 9.562 FL	NA^c	≥ 10.100 FL	≥ 9.700 FL	AHRI 550/590
	< 150 Tons		≥ 12.500 IPLV	NA^c	≥ 13.700 IPLV	≥ 15,800 IPLV
	≥ 150 Tons		≥ 9.562 FL	NA^c	≥ 10.100 FL	≥ 9.700 FL
	≥ 150 Tons		≥ 12.500 IPLV	NA^c	≥ 14.000 IPLV	≥ 16.100 IPLV
Air cooled without condenser, electrically operated	All capacities	EER (Btu/W)	Air-cooled chillers without condenser shall be rated with matching condensers and complying with air-cooled chiller efficiency requirements.
Water cooled, electrically operated positive displacement	< 75 Tons	kW/ton	≤ 0.780 FL	≤ 0.800 FL	≤ 0.750 FL	≤ 0.780 FL
	< 75 Tons		≤ 0.630 IPLV	≤ 0.600 IPLV	≤ 0.600 IPLV	≤ 0.500 IPLV
	≥ 75 tons and < 150 tons		≤ 0.775 FL	≤ 0.790 FL	≤ 0.720 FL	≤ 0.750 FL
	≥ 75 tons and < 150 tons		≤ 0.615 IPLV	≤ 0.586 IPLV	≤ 0.560 IPLV	≤ 0.490 IPLV
	≥ 150 tons and < 300 tons		≥ 0.680 FL	≥ 0.718 FL	≥ 0.660 FL	≥ 0.680 FL
	≥ 150 tons and < 300 tons		≥ 0.580 IPLV	≥ 0.540 IPLV	≥ 0.540 IPLV	≥ 0.440 IPLV
	≥ 300 tons and < 600 tons		≤ 0.620 FL	≤ 0.639 FL	≤ 0.610 FL	≤ 0.625 FL
	≥ 300 tons and < 600 tons		≤ 0.540 IPLV	≤ 0.490 IPLV	≤ 0.520 IPLV	≤ 0.410 IPLV
	≥ 600 tons		≤ 0.620 FL	≤ 0.639 FL	≤ 0.560 FL	≤ 0.585 FL
	≥ 600 tons		≤ 0.540 IPLV	≤ 0.490 IPLV	≤ 0.500 IPLV	≤ 0.380 IPLV
Water cooled, electrically operated centrifugal	< 150 Tons	kW/ton	≤ 0.634 FL	≤ 0.639 FL	≤ 0.610 FL	≤ 0.695 FL
	< 150 Tons		≤ 0.596 IPLV	≤ 0.450 IPLV	≤ 0.550 IPLV	≤ 0.440 IPLV
	≥ 150 tons and < 300 tons		≤ 0.634 FL	≤ 0.639 FL	≤ 0.610 FL	≤ 0.635 FL
	≥ 150 tons and < 300 tons		≤ 0.596 IPLV	≤ 0.450 IPLV	≤ 0.550 IPLV	≤ 0.400 IPLV
	≥ 300 tons and < 400 tons		≤ 0.576 FL	≤ 0.600 FL	≤ 0.560 FL	≤ 0.595 FL
	≥ 300 tons and < 400 tons		≤ 0.549 IPLV	≤ 0.400 IPLV	≤ 0.520 IPLV	≤ 0.390 IPLV
	≥ 400 tons and < 600 tons		≤ 0.576 FL	≤ 0.600 FL	≤ 0.560 FL	≤ 0.585 FL
	≥ 400 tons and < 600 tons		≤ 0.549 IPLV	≤ 0.400 IPLV	≤ 0.500 IPLV	≤ 0.380 IPLV
	≥ 600 Tons		≤ 0.570 FL	≤ 0.590 FL	≤ 0.560 FL	≤ 0.585 FL
	≥ 600 Tons		≤ 0.539 IPLV	≤ 0.400 IPLV	≤ 0.500 IPLV	≤ 0.380 IPLV
Air cooled, absorption, single effect	All capacities	COP	≥ 0.600 FL	NA^c	≥ 0.600 FL	NA^c	AHRI 560
Water cooled absorption, single effect	All capacities	COP	≥ 0.700 FL	NA^c	≥ 0.700 FL	NA^c
Absorption, double effect, indirect fired	All capacities	COP	≥ 1.000 FL	NA^c	≥ 1.000 FL	NA^c
Absorption, double effect, indirect fired	All capacities	COP	≥ 1.050 IPLV	NA^c	≥ 1.050 IPLV	NA^c
Absorption double effect direct fired	All capacities	COP	≥ 1.000 FL	NA^c	≥ 1.000 FL	NA^c
Absorption double effect direct fired	All capacities	COP	≥ 1.000 IPLV	NA^c	≥ 1.050 IPLV	NA^c

The requirements for centrifugal chiller shall be adjusted for nonstandard rating conditions in accordance with Section C403.2.3.1 and are only applicable for the range of conditions listed in Section C403.2.3.1. The requirements for air-cooled, water-cooled positive displacement and absorption chillers are at standard rating conditions defined in the reference test procedure.
Both the full-load and IPLV requirements shall be met or exceeded to comply with this standard. Where there is a Path B, compliance can be with either Path A or Path B for any application.
NA means the requirements are not applicable for Path B and only Path A can be used for compliance.
FL represents the full-load performance requirements and IPLV the part-load performance requirements.

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 CONDITIONⁱ	PERFORMANCE REQUIRED^{b, c, d, g, h}	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	≥ 40.2 gpm/hp	CTI ATC-105 and CTI STD-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 fan 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
Propeller or axial fan evaporative condensers	All	Ammonia Test Fluid 140°F entering gas temperature 96.3°F condensing temperature 75°F entering wb	≥ 134,000 Btu/h•hp	CTI ATC-106
Centrifugal fan evaporative condensers	All	Ammonia Test Fluid 140°F entering gas temperature 96.3°F condensing temperature 75°F entering wb	>110,000 Btu/h•hp	CTI ATC-106
Propeller or axial fan evaporative condensers	All	R-507A Test Fluid 165°F entering gas temperature 105°F condensing temperature 75°F entering wb	≥ 157,000 Btu/h•hp	CTI ATC-106
Centrifugal fan evaporative condensers	All	R-507A Test Fluid 165°F entering gas temperature 105°F condensing temperature 75°F entering wb	≥ 135,000 Btu/h•hp	CTI ATC-106
Air-cooled condensers	All	125°F Condensing Temperature 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.

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.
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.
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.
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.
Chapter 6 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure. The certification requirements do not apply to field-erected cooling towers.
Where 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, where 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.
Cooling towers shall comply with the minimum efficiency listed in the table for that specific type of tower with the capacity effect of any project-specific accessories and/or options included in the capacity of the cooling tower
For purposes of this table, evaporative condenser performance is defined as the heat rejected at the specified rating condition in the table divided by the sum of the fan motor nameplate power and the integral spray pump nameplate power
Requirements for evaporative condensers are listed with ammonia (R-717) and R-507A as test fluids in the table. Evaporative condensers intended for use with halocarbon refrigerants other than R-507A shall meet the minimum efficiency requirements listed in this table with R-507A as the test fluid.

TABLE C403.2.3(9)

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
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

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

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).
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(10)

HEAT TRANSFER EQUIPMENT

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

NR = No Requirement.

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

C403.2.3.1 Water-cooled centrifugal chilling packages

Equipment not designed for operation at AHRI Standard 550/590 test conditions of 44°F (7°C) leaving chilled-water temperature and 2.4 gpm/ton evaporator fluid flow and 85°F (29°C) entering condenser water temperature with 3 gpm/ton (0.054 I/s • kW) condenser water flow shall have maximum full-load kW/ton (FL) and part-load ratings requirements adjusted using Equations 4-6 and 4-7.

(Equation 4-6)

(Equation 4-7)

where:

K_adj	=	A × B
FL	=	Full-load kW/ton value as specified in Table C403.2.3(7).
FL_adj	=	Maximum full-load kW/ton rating, adjusted for nonstandard conditions.
IPLV	=	Value as specified in Table C403.2.3(7).
PLV_adj	=	Maximum NPLV rating, adjusted for nonstandard conditions.
A	=	0.00000014592 • (LIFT)⁴ – 0.0000346496 • (LIFT)³ + 0.00314196 • (LIFT)² – 0.147199 • (LIFT) + 3.9302
B	=	0.0015 • L_vg E_vap + 0.934
LIFT	=	L_vgCond – L_vg E_vap
L_vgCond	=	Full-load condenser leaving fluid temperature (°F).
L_vgE_vap	=	Full-load evaporator leaving temperature (°F).

The FL_adj and PLV_adj values are only applicable for centrifugal chillers meeting all of the following full-load design ranges:

Minimum evaporator leaving temperature: 36°F.
Maximum condenser leaving temperature: 115°F.
20°F ≤ LIFT ≤ 80°F.

C403.2.3.2 Positive displacement (air- and water-cooled) chilling packages

Equipment with a leaving fluid temperature higher than 32°F (0°C) and water-cooled positive displacement chilling packages with a condenser leaving fluid temperature below 115°F (46°C) shall meet the requirements of Table C403.2.3(7) when tested or certified with water at standard rating conditions, in accordance with the referenced test procedure.

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