Step 5. Set Options
Step 6. Commissioning
The WTT wall control is factory set for 2 speed operation
from the factory. Refer to your VentCool Whole House
Fan for number of fan speeds available with your model
and adjust your WTT to match.
Check Fan Operation
INSTALLER SECTION
H
SPEED
L
Access Options- Press and hold the
MODE key to display the first option.
Press the MODE key until Speed
is displayed.
Press the or key to
change the number of speeds. The
change is saved when the
backlight turns off.
Set the Number of Fan Speeds
High Speed Start
For some installations, a low speed start may not be
adequate to fully open the damper doors. When this
option is set to ON and starting the fan in low speed, the
fan will start in high speed to open the damper doors
and after about 10 seconds will return to the low speed
setting. Default is Off.
OFF
Access Options- Press and hold the
MODE key to display the first option.
Press the MODE key until HSS is
displayed.
Press the key to turn the
option on or press the key to
turn the option off. The change is
saved when the backlight turns off.
Verify that the fan is running in High speed.
Press the SPEED key to change to Low (L). Verify the fan
is running in Low speed.
Press the SPEED key to change to Medium (M). Verify the
fan is running in Medium speed.
Press the SPEED key to return to High (H) speed.
CHECK FAN SPEEDS
The fan defaults to Timer Mode. Press the ON/OFF key
to turn the fan ON.
3-Speed Fan
Verify that the fan is running in High speed.
Press the SPEED key to change to Low (L). Verify the
fan is running in Low speed.
Press the SPEED key to return to High (H) speed.
2-Speed Fan
Press the ON/OFF key to turn the fan OFF.
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P/N 780104502 2/20 Rev B
