Whirlpool ATE0743SPP Technical Manual page 26

Packaged terminal air conditioners
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CALCULATING THE
APPROXIMATE CFM
The approximate CFM actually being delivered
can be calculated by using the following for-
mula:
Kilowatts x 3413
Temperature Rise x 1.08
Do not use the kilowatt rating of the heater, as
this will result in an incorrect airflow calculation.
Kilowatts can be calculated by multiplying the
measured voltage to the unit, times the mea-
sured current draw of all the heaters that are in
operation to obtain the wattage (watts). Kilo-
watts are then obtained by dividing the watts by
1000.
EXAMPLE: The measured voltage to the unit is
230 volts. The measured current draw of the
heaters is 11.0 amps.
230 x 11.0 = 2530
2530 ÷ 1000 = 2.53 Kilowatts
2.53 x 3413 = 8635
Supply Air 95°F
Return Air 75°F
Temperature Rise 20°F
20 X 1.08 = 21.6
8635
= 400 CFM
21.6
3-6
= CFM

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