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// CODE SNIPPET

C403.3.2 HVAC Equipment Performance Requirements (Mandatory)

2018 Philadelphia Energy Conservation Code > 4 [CE] Commercial Energy Efficiency > C403 Building Mechanical Systems > C403.3 Heating and Cooling Equipment Efficiencies (Mandatory) > C403.3.2 HVAC Equipment Performance Requirements (Mandatory)
JUMP TO FULL CODE CHAPTER

Equipment shall meet the minimum efficiency requirements of Tables C403.3.2(1) through C403.3.2(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 C403.3.2(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 C403.3.2(1)

MINIMUM EFFICIENCY REQUIREMENTS: ELECTRICALLY OPERATED UNITARY AIR CONDITIONERS AND CONDENSING UNITS

EQUIPMENT TYPESIZE CATEGORYHEATING
SECTION TYPE
SUBCATEGORY OR
RATING CONDITION
MINIMUM EFFICIENCYTEST
PROCEDUREa
Air conditioners, air cooled< 65,000 Btu/hbAllSplit System13.0 SEERAHRI 210/240
Single Package14.0 SEER
Through-the-wall (air cooled)≤ 30,000 Btu/hbAllSplit system12.0 SEER
Single Package12.0 SEER
Small-duct high-velocity
(air cooled)
< 65,000 Btu/hbAllSplit System11.0 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
12.8 IEER
AHRI 340/360
All otherSplit System and
Single Package
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
12.4 IEER
All otherSplit System and
Single Package
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
11.6 IEER
All otherSplit System and
Single Package
9.8 EER
11.4 IEER
≥ 760,000 Btu/hElectric Resistance
(or None)
Split System and
Single Package
9.7 EER
11.2 IEER
All otherSplit System and
Single Package
9.5 EER
11.0 IEER
Air conditioners, water cooled< 65,000 Btu/hbAllSplit 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
13.9 IEER
AHRI 340/360
All otherSplit System and
Single Package
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
13.9 IEER
All otherSplit System and
Single Package
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
13.6 IEER
All otherSplit System and
Single Package
12.2 EER
13.4 IEER
≥ 760,000 Btu/hElectric Resistance
(or None)
Split System and
Single Package
12.2 EER
13.5 IEER
All otherSplit System and
Single Package
12.0 EER
13.3 IEER
Air conditioners,
evaporatively cooled
< 65,000 Btu/hbAllSplit 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
All otherSplit 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
All otherSplit 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 IEER
All otherSplit System and
Single Package
11.7 EER
11.9 IEER
≥ 760,000 Btu/hElectric Resistance
(or None)
Split System and
Single Package
11.7 EER
11.9 IEER
All otherSplit System and
Single Package
11.5 EER
11.7 IEER
Condensing units, air cooled≥ 135,000 Btu/h——10.5 EER
11.8 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.

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

TABLE C403.3.2(2)

MINIMUM EFFICIENCY REQUIREMENTS: ELECTRICALLY OPERATED UNITARY AND APPLIED HEAT PUMPS

EQUIPMENT TYPESIZE CATEGORYHEATING
SECTION TYPE
SUBCATEGORY OR
RATING CONDITION
MINIMUM
EFFICIENCY
TEST
PROCEDUREa
Air cooled (cooling mode)< 65,000 Btu/hbAllSplit System14.0 SEERAHRI 210/240
Single Package14.0 SEER
Through-the-wall, air cooled≤ 30,000 Btu/hbAllSplit System12.0 SEER
Single Package12.0 SEER
Single-duct high-velocity air cooled< 65,000 Btu/hbAllSplit System11.0 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
12.0 IEER
AHRI 340/360
All otherSplit System and
Single Package
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
11.6 IEER
All otherSplit System and
Single Package
10.4 EER
11.4 IEER
≥ 240,000 Btu/hElectric Resistance
(or None)
Split System and
Single Package
9.5 EER
10.6 IEER
All otherSplit System and
Single Package
9.3 EER
9.4 IEER
Water to Air: Water Loop
(cooling mode)
< 17,000 Btu/hAll86°F entering water12.2 EERISO 13256-1
≥ 17,000 Btu/h and
< 65,000 Btu/h
All86°F entering water13.0 EER
≥ 65,000 Btu/h and
< 135,000 Btu/h
All86°F entering water13.0 EER
Water to Air: Ground Water
(cooling mode)
< 135,000 Btu/hAll59°F entering water18.0 EERISO 13256-1
Brine to Air: Ground Loop
(cooling mode)
< 135,000 Btu/hAll77°F entering water14.1 EERISO 13256-1
Water to Water: Water Loop
(cooling mode)
< 135,000 Btu/hAll86°F entering water10.6 EERISO 13256-2
Water to Water: Ground Water
(cooling mode)
< 135,000 Btu/hAll59°F entering water16.3 EER
Brine to Water: Ground Loop
(cooling mode)
< 135,000 Btu/hAll77°F entering fluid12.1 EER
Air cooled (heating mode)< 65,000 Btu/hb—Split System8.2 HSPFAHRI 210/240
—Single Package8.0 HSPF
Through-the-wall,
(air cooled, heating mode)
≤ 30,000 Btu/hb (cooling capacity)—Split System7.4 HSPF
—Single Package7.4 HSPF
Small-duct high velocity
(air cooled, heating mode)
< 65,000 Btu/hb—Split System6.8 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 COPAHRI 340/360
17°Fdb/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
17°Fdb/15°F wb
outdoor air
2.05 COP
Water to Air: Water Loop
(heating mode)
< 135,000 Btu/h
(cooling capacity)
—68°F entering water4.3 COPISO 13256-1
Water to Air: Ground Water
(heating mode)
< 135,000 Btu/h
(cooling capacity)
—50°F entering water3.7 COP
Brine to Air: Ground Loop
(heating mode)
< 135,000 Btu/h
(cooling capacity)
—32°F entering fluid3.2 COP
Water to Water: Water Loop
(heating mode)
< 135,000 Btu/h
(cooling capacity)
—68°F entering water3.7 COPISO 13256-2
Water to Water: Ground Water
(heating mode)
< 135,000 Btu/h
(cooling capacity)
—50°F entering water3.1 COP
Brine to Water: Ground Loop
(heating mode)
< 135,000 Btu/h
(cooling capacity)
—32°F entering fluid2.5 COP

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

  1. Chapter 6 contains a complete specification of the referenced test procedure, including the reference year version of the test procedure.
  2. Single-phase, air-cooled heat pumps less than 65,000 Btu/h are regulated by NAECA. SEER and HSPF values are those set by NAECA.

TABLE C403.3.2(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 TYPESIZE CATEGORY (INPUT)SUBCATEGORY OR
RATING CONDITION
MINIMUM EFFICIENCYTEST
PROCEDUREa
PTAC (cooling mode)
new construction
All Capacities95°F db outdoor air14.0 - (0.300 × Cap/1000) EERAHRI 310/380
PTAC (cooling mode)
replacementsb
All Capacities95°F db outdoor air10.9 - (0.213 × Cap/1000) EER
PTHP (cooling mode)
new construction
All Capacities95°F db outdoor air14.0 - (0.300 × Cap/1000) EER
PTHP (cooling mode)
replacementsb
All Capacities95°F db outdoor air10.8 - (0.213 × Cap/1000) EER
PTHP (heating mode)
new construction
All Capacities—3.2 - (0.026 × Cap/1000) COP
PTHP (heating mode)
replacementsb
All Capacities—2.9 - (0.026 × Cap/1000) COP
SPVAC (cooling mode)< 65,000 Btu/h95°F db/ 75°F wb outdoor air9.0 EERAHRI 390
≥ 65,000 Btu/h and
< 135,000 Btu/h
95°F db/ 75°F wb outdoor air8.9 EER
≥ 135,000 Btu/h and
< 240,000 Btu/h
95°F db/ 75°F wb outdoor air8.6 EER
SPVHP (cooling mode)< 65,000 Btu/h95°F db/ 75°F wb outdoor air9.0 EER
≥ 65,000 Btu/h and
< 135,000 Btu/h
95°F db/ 75°F wb outdoor air8.9 EER
≥ 135,000 Btu/h and
< 240,000 Btu/h
95°F db/ 75°F wb outdoor air8.6 EER
SPVHP (heating mode)< 65,000 Btu/h47°F db/ 43°F wb outdoor air3.0 COPAHRI 390
≥ 65,000 Btu/h and
< 135,000 Btu/h
47°F db/ 43°F wb outdoor air3.0 COP
≥ 135,000 Btu/h and
< 240,000 Btu/h
47°F db/ 75°F wb outdoor air2.9 COP
Room air conditioners,
with louvered sides
< 6,000 Btu/h—11.0 CEERANSI/AHAM RAC-1
≥ 6,000 Btu/h and
< 8,000 Btu/h
—11.0 CEER
≥ 8,000 Btu/h and
< 14,000 Btu/h
—10.9 CEER
≥ 14,000 Btu/h and
< 20,000 Btu/h
—10.7 CEER
≥ 20,000 Btu/h and
≤ 25,000 Btu/h
—9.4 CEER
> 25,000 Btu/h—9.0 CEER
Room air conditioners,
without louvered sides
< 6,000 Btu/h—10.0 CEER
≥ 6,000 Btu/h and
< 8,000 Btu/h
—10.0 CEER
≥ 8,000 Btu/h and
< 11,000 Btu/h
—9.6 CEER
≥ 11,000 Btu/h and
< 14,000 Btu/h
—9.5 CEER
≥ 14,000 Btu/h and
< 20,000 Btu/h
—9.3 CEER
≥ 20,000 Btu/h —9.4 CEER
Room air-conditioner
heat pumps with
louvered sides
< 20,000 Btu/h—9.8 CEER
≥ 20,000 Btu/h—9.3 CEER
Room air-conditioner
heat pumps without
louvered sides
< 14,000 Btu/h—9.3 CEER
≥ 14,000 Btu/h—8.7 CEER
Room air conditioner casement onlyAll capacities—9.5 CEERANSI/AHAM RAC-1
Room air conditioner casement-sliderAll capacities—10.4 CEER

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.

  1. Chapter 6 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
  2. 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 C403.3.2(4)

WARM-AIR FURNACES AND COMBINATION WARM-AIR FURNACES/AIR-CONDITIONING UNITS, WARM-AIR DUCT FURNACES AND UNIT HEATERS, MINIMUM EFFICIENCY REQUIREMENTS

EQUIPMENT TYPESIZE CATEGORY
(INPUT)
SUBCATEGORY OR
RATING CONDITION
MINIMUM
EFFICIENCYd, e
TEST PROCEDUREa
Warm-air furnaces, gas fired< 225,000 Btu/h—80% AFUE or
80%Etc
DOE 10 CFR Part 430 or
ANSI Z21.47
≥ 225,000 Btu/hMaximum capacityc80%EtfANSI Z21.47
Warm-air furnaces, oil fired< 225,000 Btu/h—83% AFUE or
80%Etc
DOE 10 CFR Part 430
or UL 727
≥ 225,000 Btu/hMaximum capacityb81%EtgUL 727
Warm-air duct furnaces,
gas fired
All capacitiesMaximum capacityb80%EcANSI Z83.8
Warm-air unit heaters,
gas fired
All capacitiesMaximum capacityb80%EcANSI Z83.8
Warm-air unit heaters,
oil fired
All capacitiesMaximum capacityb80%EcUL 731

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

  1. Chapter 6 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
  2. Minimum and maximum ratings as provided for and allowed by the unit's controls.
  3. 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.
  4. Et = Thermal efficiency. See test procedure for detailed discussion.
  5. Ec = Combustion efficiency (100% less flue losses). See test procedure for detailed discussion.
  6. Ec = 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.
  7. Et = 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 C403.3.2(5)

MINIMUM EFFICIENCY REQUIREMENTS: GAS- AND OIL-FIRED BOILERS

EQUIPMENT TYPEaSUBCATEGORY OR
RATING CONDITION
SIZE CATEGORY (INPUT)MINIMUM EFFICIENCYd, eTEST PROCEDURE
Boilers, hot waterGas-fired< 300,000 Btu/hf, g82% AFUE10 CFR Part 430
≥ 300,000 Btu/h and
≤ 2,500,000 Btu/hb
80% Et10 CFR Part 431
> 2,500,000 Btu/ha82% Ec
Oil-firedc< 300,000 Btu/hg84% AFUE10 CFR Part 430
≥ 300,000 Btu/h and
≤ 2,500,000 Btu/hb
82% Et10 CFR Part 431
> 2,500,000 Btu/ha84% Ec
Boilers, steamGas-fired< 300,000 Btu/hf80% AFUE10 CFR Part 430
Gas-fired- all, except natural draft≥ 300,000 Btu/h and
≤ 2,500,000 Btu/hb
79% Et10 CFR Part 431
> 2,500,000 Btu/ha79% Et
Gas-fired-natural draft≥ 300,000 Btu/h and
≤ 2,500,000 Btu/hb
77% Et
> 2,500,000 Btu/ha77% Et
Oil-firedc< 300,000 Btu/h82% AFUE10 CFR Part 430
≥ 300,000 Btu/h and
≤ 2,500,000 Btu/hb
81% Et10 CFR Part 431
> 2,500,000 Btu/ha81% Et

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

  1. 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.
  2. Maximum capacity — minimum and maximum ratings as provided for and allowed by the unit's controls.
  3. Includes oil-fired (residual).
  4. Ec = Combustion efficiency (100 percent less flue losses).
  5. Et = Thermal efficiency. See referenced standard for detailed information.
  6. Boilers shall not be equipped with a constant-burning ignition pilot.
  7. A boiler not equipped with a tankless domestic water heating coil shall be equipped with an automatic means for adjusting the temperature of the water such that an incremental change in inferred heat load produces a corresponding incremental change in the temperature of the water supplied.

TABLE C403.3.2(6)

MINIMUM EFFICIENCY REQUIREMENTS: CONDENSING UNITS, ELECTRICALLY OPERATED

EQUIPMENT TYPESIZE CATEGORYMINIMUM EFFICIENCYbTEST PROCEDUREa
Condensing units, air cooled≥ 135,000 Btu/h10.1 EER
11.2 IPLV
AHRI 365
Condensing units, water or evaporatively cooled≥ 135,000 Btu/h13.1 EER
13.1 IPLV

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

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

TABLE C403.3.2(7)

WATER CHILLING PACKAGES — EFFICIENCY REQUIREMENTSa, b, d

EQUIPMENT TYPESIZE CATEGORYUNITSBEFORE 1/1/2015AS OF 1/1/2015TEST
PROCEDUREc
Path APath BPath APath B
Air-cooled chillers< 150 TonsEER
(Btu/W)
≥ 9.562 FLNAc≥ 10.100 FL≥ 9.700 FLAHRI 550/590
≥ 12.500 IPLV≥ 13.700 IPLV≥ 15,800 IPLV
≥ 150 Tons≥ 9.562 FLNAc≥ 10.100 FL≥ 9.700 FL
≥ 12.500 IPLV≥ 14.000 IPLV≥ 16.100 IPLV
Air cooled
without condenser,
electrically operated
All capacitiesEER
(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 TonskW/ton≤ 0.780 FL≤ 0.800 FL≤ 0.750 FL≤ 0.780 FL
≤ 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
≤ 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
≥ 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
≤ 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
≤ 0.540 IPLV≤ 0.490 IPLV≤ 0.500 IPLV≤ 0.380 IPLV
Water cooled, electrically
operated centrifugal
< 150 TonskW/ton≤ 0.634 FL≤ 0.639 FL≤ 0.610 FL≤ 0.695 FL
≤ 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
≤ 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
≤ 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
≤ 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
≤ 0.539 IPLV≤ 0.400 IPLV≤ 0.500 IPLV≤ 0.380 IPLV
Air cooled, absorption,
single effect
All capacitiesCOP≥ 0.600 FLNAc≥ 0.600 FLNAcAHRI 560
Water cooled absorption,
single effect
All capacitiesCOP≥ 0.700 FLNAc≥ 0.700 FLNAc
Absorption, double
effect, indirect fired
All capacitiesCOP≥ 1.000 FLNAc≥ 1.000 FLNAc
≥ 1.050 IPLV≥ 1.050 IPLV
Absorption double effect
direct fired
All capacitiesCOP≥ 1.000 FLNAc≥ 1.000 FLNAc
≥ 1.000 IPLV≥ 1.050 IPLV
  1. The requirements for centrifugal chiller shall be adjusted for nonstandard rating conditions in accordance with Section C403.3.2.1 and are only applicable for the range of conditions listed in Section C403.3.2.1. The requirements for air-cooled, water-cooled positive displacement and absorption chillers are at standard rating conditions defined in the reference test procedure.
  2. 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.
  3. NA means the requirements are not applicable for Path B and only Path A can be used for compliance.
  4. FL represents the full-load performance requirements and IPLV the part-load performance requirements.

TABLE C403.3.2(8)

MINIMUM EFFICIENCY REQUIREMENTS: HEAT REJECTION EQUIPMENT

EQUIPMENT TYPEaTOTAL SYSTEM
HEAT REJECTION
CAPACITY AT RATED
CONDITIONS
SUBCATEGORY OR RATING CONDITIONiPERFORMANCE
REQUIREDb, c, d, g, h
TEST PROCEDUREe, f
Propeller or axial fan
open-circuit cooling towers
All95°F entering water
85°F leaving water
75°F entering wb
≥ 40.2 gpm/hpCTI ATC-105 and
CTI STD-201 RS
Centrifugal fan
open-circuit cooling towers
All95°F entering water
85°F leaving water
75°F entering wb
≥ 20.0 gpm/hpCTI ATC-105 and
CTI STD-201 RS
Propeller or axial fan
closed-circuit cooling
towers
All102°F entering water
90°F leaving water
75°F entering wb
≥ 16.1 gpm/hpCTI ATC-105S and
CTI STD-201 RS
Centrifugal fan closed-
circuit cooling towers
All102°F entering water
90°F leaving water
75°F entering wb
≥ 7.0 gpm/hpCTI ATC-105S and
CTI STD-201 RS
Propeller or axial fan
evaporative condensers
AllAmmonia Test Fluid
140°F entering gas temperature
96.3°F condensing temperature
75°F entering wb
≥ 134,000 Btu/h × hpCTI ATC-106
Centrifugal fan
evaporative condensers
AllAmmonia Test Fluid
140°F entering gas temperature
96.3°F condensing temperature
75°F entering wb
≥ 110,000 Btu/h × hpCTI ATC-106
Propeller or axial fan
evaporative condensers
AllR-507A Test Fluid
165°F entering gas temperature
105°F condensing temperature
75°F entering wb
≥ 157,000 Btu/h × hpCTI ATC-106
Centrifugal fan
evaporative condensers
AllR-507A Test Fluid
165°F entering gas temperature
105°F condensing temperature
75°F entering wb
≥ 135,000 Btu/h × hpCTI ATC-106
Air-cooled condensersAll125°F Condensing Temperature
190°F Entering Gas Temperature
15°F subcooling 95°F entering db
≥ 176,000 Btu/h × hpAHRI 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.

  1. 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.
  2. 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, divided by the fan nameplate-rated motor power.
  3. 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, divided by the sum of the fan nameplate-rated motor power and the spray pump nameplate-rated motor power.
  4. 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.
  5. 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.
  6. 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.
  7. 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 or options included in the capacity of the cooling tower
  8. 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
  9. 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 C403.3.2(9)

MINIMUM EFFICIENCY AIR CONDITIONERS AND CONDENSING UNITS SERVING COMPUTER ROOMS

EQUIPMENT TYPENET SENSIBLE COOLING CAPACITYaMINIMUM SCOP-127b EFFICIENCY
DOWNFLOW UNITS / UPFLOW UNITS
TEST PROCEDURE
Air conditioners, air cooled< 65,000 Btu/h2.20 / 2.09ANSI/ASHRAE 127
≥ 65,000 Btu/h and < 240,000 Btu/h2.10 / 1.99
≥ 240,000 Btu/h1.90 / 1.79
Air conditioners, water cooled< 65,000 Btu/h2.60 / 2.49
≥ 65,000 Btu/h and < 240,000 Btu/h2.50 / 2.39
≥ 240,000 Btu/h2.40 / 2.29
Air conditioners, water cooled with
fluid economizer
< 65,000 Btu/h2.55 / 2.44
≥ 65,000 Btu/h and < 240,000 Btu/h2.45 / 2.34
≥ 240,000 Btu/h2.35 / 2.24
Air conditioners, glycol cooled
(rated at 40% propylene glycol)
< 65,000 Btu/h2.50 / 2.39
≥ 65,000 Btu/h and < 240,000 Btu/h2.15 / 2.04
≥ 240,000 Btu/h2.10 / 1.99
Air conditioners, glycol cooled
(rated at 40% propylene glycol)
with fluid economizer
< 65,000 Btu/h2.45 / 2.34
≥ 65,000 Btu/h and < 240,000 Btu/h2.10 / 1.99
≥ 240,000 Btu/h2.05 / 1.94

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

  1. 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).
  2. 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 C403.3.2(10)

HEAT TRANSFER EQUIPMENT

EQUIPMENT TYPESUBCATEGORYMINIMUM EFFICIENCYTEST PROCEDUREa
Liquid-to-liquid heat exchangersPlate typeNRAHRI 400

NR = No Requirement.

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

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