Form #43219040
Oct 2013
DIRECT SPARK IGNITION SYSTEM
(Ignition Suffix “1”)
1. Turn on the gas supply.
2. Set the thermostat to call for heat.
3. Ignition should occur immediately.
4. If the burner fails to light, or flame is not detected during the first trial for ignition (a period of approximately
10 seconds) the gas valve is de-energized and the control goes through an interpurge delay of approximately
15 seconds before another ignition attempt. The control will attempt two additional ignition trials before going
to lockout, and the valve will be de-energized immediately.
5. If the heater does not light, shut off the gas completely for 5 minutes before attempting to relight.
6.
The heater must be grounded. Poor grounding will give nuisance lockouts, particularly
during momentary power interruptions.
7. To shut down the heater, turn off the gas and the electrical supply.
NOTE: The lighting and shutdown instructions are also shown on the permanent nameplate attached to the
heater.
13) SEQUENCE OF OPERATION
The chart below shows the sequence of operation for the normal operating cycle of the heater when connected
to a permanent 120V power supply and the heater is turned on and off by a remote 120V thermostat. (See
Section 10)
If the flame is not sensed during sequence T2 then the burner will automatically begin re-ignition sequence T1.
The ignition sequence will be repeated three times with a 15 second inter-purge. If the flame is not
reestablished the heater will go to lockout.
14
