Instruction manual

18
Blower Performance Chart—Variable Speed Motor
The versatility of the variable speed motor enables the air handler
to tailor its performance to the different modes of operation
encountered in heating and cooling. All variable speed air
handlers are capable of operation at more than one nominal
airflow rate. The operation of a variable speed air handler blower
at different airflow rates is determined by the control board taps
and the thermostat. See the Blower Performance Chart—Variable
Speed Motor.
Before beginning the setup, become familiar with the information
found in the Blower Performance Chart—Variable Speed Motor.
The data in the Blower Performance Chart—Variable Speed
Motor is categorized by model size and mode of operation. Use
the information provided to determine the CFM taps needed for
cooling and heating.
Blower Performance Chart—Variable Speed Motor
CFM @ E.S.P. - inches W.C.
Air Handler
Model
Energized Thermostat
Ter min al
Control
Board Tap 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
WAHMV24 Y1 A 540 550 550 550 560 560 570 560
B 470 490 490 500 500 500 490 490
C 420 420 410 430 430 430 430 410
D 270 270 300 280 270 250 240 240
Y1/Y2 A 770 790 790 790 800 800 810 800
B 670 700 700 710 710 710 700 700
C 600 600 590 610 610 610 610 590
D 390 390 420 400 380 360 340 340
G A 390 400 400 400 400 400 410 400
B 340 350 350 360 360 360 350 350
C 300 300 300 310 310 310 310 300
D 200 200 210 200 190 180 170 170
WAHMV36 Y1 A 820 830 850 850 870 870 870 870
B 700 700 700 690 700 710 710 700
C 570 560 560 560 550 550 540 520
D 440 420 390 390 370 360 360 340
Y1/Y2 A 1,170 1,180 1,210 1,210 1,240 1,240 1,240 1,240
B 1,000 1,000 1,000 990 1,000 1,010 1,010 1,000
C 810 800 800 800 790 780 770 740
D 630 600 560 550 530 520 510 480
G A 590 590 610 610 620 620 620 620
B 500 500 500 500 500 510 510 500
C 410 400 400 400 400 390 390 370
D 320 300 280 280 270 260 260 240