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PDFWAC 51-11C-403239

Table C403.2.3(9) and Table C403.2.3(10)Minimum efficiency requirements.

Table C403.2.3(9)
Minimum Efficiency RequirementsAir Conditioners and Condensing Units Serving Computer Rooms
Equipment Type
Net Sensible Cooling Capacitya
Minimum
SCOP-127b Efficiency
Downflow units/Upflow units
Test Procedure
Air conditioners,
air cooled
< 65,000 Btu/h
(< 19 kW)
2.20/2.09
ANSI/ASHRAE 127
≥ 65,000 Btu/h and < 240,000 Btu/h
( 19 kW and < 70 kW)
2.10/1.99
≥ 240,000 Btu/h
(≥ 70 kW)
1.90/1.79
Air conditioners,
water cooled
< 65,000 Btu/h
(< 19 kW)
2.60/2.49
ANSI/ASHRAE 127
≥ 65,000 Btu/h and < 240,000 Btu/h
(≥ 19 kW and < 70 kW)
2.50/2.39
≥ 240,000 Btu/h
(≥ 70 kW)
2.40/2.29
Air conditioners,
water cooled
with fluid economizer
< 65,000 Btu/h
(< 19 kW)
2.55/2.44
ANSI/ASHRAE 127
≥ 65,000 Btu/h and < 240,000 Btu/h
(≥ 19kW and < 70 kW)
2.45/2.34
≥ 240,000 Btu/h
(≥ 70 kW)
2.35/2.24
Air conditioners,
glycol cooled
(rated at 40% propylene glycol)
< 65,000 Btu/h
(< 19 kW)
2.50/2.39
ANSI/ASHRAE 127
≥ 65,000 Btu/h and < 240,000 Btu/h
(≥ 19 kW and < 70 kW)
2.15/2.04
≥ 240,000 Btu/h
(≥ 70 kW)
2.10/1.99
Air conditioners,
glycol cooled
(rated at 40% propylene glycol)
with fluid economizer
< 65,000 Btu/h
(< 19 kW)
2.45/2.34
ANSI/ASHRAE 127
≥ 65,000 Btu/h and < 240,000 Btu/h
(≥ 19 kW and < 70 kW)
2.10/1.99
≥ 240,000 Btu/h
(≥ 70 kW)
2.05/1.94
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(10)
Minimum Efficiency RequirementsHeat Transfer Equipment
Equipment Type
Subcategory
Minimum
Efficiency
Test
Procedurea
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.
[Statutory Authority: RCW 19.27A.025, 19.27A.160, and 19.27.074. WSR 16-03-072, § 51-11C-403239, filed 1/19/16, effective 7/1/16. Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-403239, filed 2/1/13, effective 7/1/13.]
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