ASHRAE-90.1-2022- - Page 182

Extracted Content

Table 10.8-5 Minimum Nominal Full-Load Efficiency for Fire Pump Electric Motors [a] (Continued)

Number of Poles 	Full-Load Efficiency, %	Col3	Col4	Col5	Col6	Col7	Col8	Col9
Number of Poles	Open Drip-Proof Motors	Open Drip-Proof Motors	Open Drip-Proof Motors	Open Drip-Proof Motors	Totally Enclosed Fan-Cooled Motors	Totally Enclosed Fan-Cooled Motors	Totally Enclosed Fan-Cooled Motors	Totally Enclosed Fan-Cooled Motors
Number of Poles	2	4	6	8	2	4	6	8
**Synchronous Speed (RPM)**	3600	1800	1200	900	3600	1800	1200	900

Motor Size, hp	Col2	Col3	Col4	Col5	Col6	Col7	Col8	Col9
300	95.0	95.4	95.4	NR	95.4	95.4	95.0	NR
350	95.0	95.4	95.4	NR	95.4	95.4	95.0	NR
400	95.4	95.4	NR	NR	95.4	95.4	NR	NR
450	95.8	95.8	NR	NR	95.4	95.4	NR	NR
500	95.8	95.8	NR	NR	95.4	95.8	NR	NR

a. Nominal efficiencies shall be established in accordance with DOE 10 CFR 431. b. For purposes of determining the required minimum nominal full-load efficiency of an electric motor that has a horsepower or kilowatt rating between two horsepower or two kilo-

watt ratings listed in this table, each such motor shall be deemed to have a listed horsepower or kilowatt rating, determined as follows: 1.A horsepower at or above the midpoint between the two consecutive horsepowers shall be rounded up to the higher of the two horsepowers. 2.A horsepower below the midpoint between the two consecutive horsepowers shall be rounded down to the lower of the two horsepowers. 3.A kilowatt rating shall be directly converted from kilowatts to horsepower using the formula 1 kilowatt = (1/0.746) horsepower. The conversion should be calculated to three significant decimal places, and the resulting horsepower shall be rounded in accordance with paragraph (1) or (2), whichever applies. NR—No requirement

Table 10.8-6 Maximum Pump Energy Index (PEI)

Maximum PEI for Pumps Manufactured on or after January 27, 2020

Pump Type	Nominal Speed of Rotation (RPM)	Operating Mode	Maximum PEI a	C-Value b	Test Procedure
End suction, close coupled	1800	Constant load	1.00	128.47	10 CFR Part 431
End suction, close coupled	3600	Constant load	1.00	130.42	10 CFR Part 431
End suction, close coupled	1800	Variable load	1.00	128.47	10 CFR Part 431
End suction, close coupled	3600	Variable load	1.00	130.42	10 CFR Part 431
End suction, frame mounted	1800	Constant load	1.00	128.85	10 CFR Part 431
End suction, frame mounted	3600	Constant load	1.00	130.99	10 CFR Part 431
End Suction, frame mounted	1800	Variable load	1.00	128.85	10 CFR Part 431
End suction, frame mounted	3600	Variable load	1.00	130.99	10 CFR Part 431
In-line	1800	Constant load	1.00	129.30	10 CFR Part 431
In-line	3600	Constant load	1.00	133.84	10 CFR Part 431
In-line	1800	Variable load	1.00	129.30	10 CFR Part 431
In-line	3600	Variable load	1.00	133.84	10 CFR Part 431
Radially split, vertical	1800	Constant load	1.00	129.63	10 CFR Part 431
Radially split, vertical	3600	Constant load	1.00	133.20	10 CFR Part 431
Radially split, vertical	1800	Variable load	1.00	129.63	10 CFR Part 431
Radially split, vertical	3600	Variable load	1.00	133.20	10 CFR Part 431
Submersible turbine	1800	Constant load	1.00	138.78	10 CFR Part 431
Submersible turbine	3600	Constant load	1.00	134.85	10 CFR Part 431
Submersible turbine	1800	Variable load	1.00	138.78	10 CFR Part 431
Submersible turbine	3600	Variable load	1.00	134.85	10 CFR Part 431

a. For pumps with the constant load operating mode, the relevant PEI is PEICL . For pumps with the variable load operating mode, the relevant PEI is PEIVL . b. The C-values shown in this table shall be used in the equation for PEISTD when calculating PEICL or PEIVL.

180 ANSI/ASHRAE/IES Standard 90.1-2022 (I-P)