L.B. White Premier 40 Manuel Du Propriétaire Et Instructions D'installation page 26

26
Premier Ductable Heater
• Air proving switch closes and 24 volts are returned
to the ignition control module.
- Air proving switch light is activated indicating
that the air proving circuit is operating properly.
• Ignition control module sends high voltage to the
igniter electrode.
- Igniter sparks.
• Ignition control module sends 24 volts to the gas
control valve through the high limit switch.
- Gas valve light is activated indicating that gas
control valve is receiving 24 volts.
- Gas control valve opens.
- Ignition occurs.
• Igniter continues to spark until fl ame
proving occurs.
- Ignition spark is cut off.
- Gas valve stays open.
• Room warms to desired temperature.
- Thermostat is satisfi ed.
- Heater shuts down.
• Process starts again on a call for heat.
IGNITION FAILURE SEQUENCE:
• There are three ignition trials. Each trial takes 10
seconds.
• If burner fl ame is not maintained at the end of the
third trial, the module goes into safety lockout
- Gas valve closes.
- Ignition spark shuts off.
- Fan motor stops.
• To retry for ignition, the systems must
be reset:
- Turn the thermostat down and then up to call
for heat or unplug heater and plug it back in or
- Position selector switch to off and then back to
on.
Owner's Manual • Premier 40