Use and Care Manual

6
Figure 3: Sequence of Operation
Thermostat Calls
for Heat
Circulator Output
Energizes
Waiting For
Damper to Open
Ignition Source Energized
Pilot Gas On
Limits Closed Checked
Trial For Ignition
Ignition Source Off
Main Gas On
Pilot Flame Proven
Pilot Flame
Not Proven
Call For Heat Ends
Standby
POWER
(Control LED’s
Illuminated)
DAMPER
Delay 5 Minutes
Ignition Source Off
Pilot Gas Off
Main Gas Off
Vent Damper De-Energized
Circulator Output De-Energized
Continuous
Retry
POWER
Standby
FLAME
LIMIT
Vent Damper Energized
Self Testing
TSTAT/CIRC