Full Product Manual

Humidex
16
Installing and Wiring the Booster Fan
To allow the booster fan to draw air from the upper levels, a universal boot must be installed.
First locate a safe place to cut out a hole to fit the universal boot. Once a safe and adequate
area had been found, proceed by cutting the hole.
With the hole cut, install the universal boot which will allow the unit to pull the air down.
Once the boot has been installed, the HCS-BSF can be mounted on a floor joist a minimum
of 6 ft. away from the universal boot to reduce noise. Connect the universal boot to the
booster fan with the 6 in. insulated flex provided.
If the building codes in your area require a backdraft damper to be installed, it must be placed
on the exhaust side of the HCS-BSF to limit the impact on the total airflow through the unit.
Note: A T-junction duct and flex can be added to the exhaust side of the HCS-BSF to direct
air into all areas of the crawl space
Now that the booster fan has been installed, it must be connected to the rest of the system.
Run the white cable from the booster to the main exhaust.
Note: These steps must be completed before plugging in the booster fan.
After the white cable has been run it must be connected to the system. Make sure the main
HCS exhaust unit is unplugged before connecting the booster fan.
Wiring Guide:
Yellow Wire – B
Green Wire – A
Black Wire – GND
Red Wire – VCC
Note: The main exhaust unit must remain unplugged until the booster fan installation is
complete.
On the booster fan’s end of the cable
attach the black connector with the
wiring matching the following wiring
guide.