23
Heater Start-Up
WARNING:
The gas supply hose assembly must be protected from traff ic, building materials
and contact with hot surfaces both during use and while in storage.
a. Turn the fresh air fan module’s POWER switch to the “ON” position.
b. Turn the heater POWER switch to the “HEAT” position.
c. Adjust the digital operating thermostat to the desired room temperature. See detailed thermostat
operating instructions below.
d. The heater will attempt ignition aft er a 5 second pre-purge cycle.
NOTE: It is normal for air to be trapped in the gas hose upon each initial startup. The heater may
require more than one trial for ignition before air is finally purged from line and ignition takes place.
Thermostat Operating Instructions
NOTE: Set temperature may only be set between 120 and 140 degrees F.
1. Press and release the SET button. The SP text appears on the display.
2. Press the SET button again to show the real value on the display.
3. Modify the value by pressing the UP or DOWN button.
4. Press the SET button to store the new SP value.
5. Press the SET and DOWN button together to quit the programming, or wait 1 minute for the
controller to TIMEOUT.
