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S S t t e e p p 4 4 — — U U n n i i t t I I n n s s t t a a l l l l a a t t i i o o n n
E E C C M M F F a a n n M M o o t t o o r r A A d d j j u u s s t t m m e e n n t t s s
Figure 15. ECM Fan Control
If the airflow needs to be increased or decreased, see
the Airflow Table in the Service Facts. Information on
changing the speed of the blower motor is in the
Blower Performance Table.
Blower speed changes are made on the ICM Fan
Control mounted in the control box. The ICM Fan
Control controls the variable speed motor.
There is a bank of 8 dip switches located at the upper
left side of the board. The dip switches work in pairs to
match the cooling/heat airflow (CFM/TON), Fan off-
delay options, and electric heat airflow adjustment. The
switches appear as shown in
Figure 15, p.
21.
18-EB33D1-1D-EN
21
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