Make-Up Air Installation Manual

11/23/2011 5 HI309
SUMMER OR COOLING DISABLE
This module must be disabled during the cooling cycle to prevent adding heat to the air conditioning
operation.
Select one of the following 3 installation techniques or methods
A. Extend HP reversing valve wire to the designated “RV” tab. If the heat pump logic is
“logic high” for heating, cut the W1/W2 resistor on the control board with a side cutter.
The location of this resistor is shown below. Review your heat pump’s installation
manual to make certain of your heat pump’s reversing valve logic
B. Add a manual (summer) disable toggle switch between “R” and “RV” tab.
C. Simply turn off 24ØV breaker during the cooling season.
Method B or C should be used for boost heater applications.
The location of the W1/W2 resistor is circled above.