Operation - Standing Pilot Boilers - Weil-McLain GOLD CGa Manual

GOLD CGa Gas-Fired Water Boiler — Boiler Manual
8a
Operation — standing pilot boilers
Follow all procedures given in this manual and light-
ing instructions when operating the boiler. Failure to
do so could result in severe personal injury, death or
substantial property damage.
1. After pilot is manually lit, the gas valve provides pilot
gas and maintains pilot as long as the thermocouple is satisfied. If ther-
mocouple signal drops for any reason, pilot must be manually lighted,
following the
damper will remain closed.
2. When thermostat circuit closes, the boiler circulator and
vent damper are energized. The vent damper drives open. When the
vent damper is fully open, its end switch energizes the main gas valve.
Figure 23 Wiring diagram — Standing pilot system
34
main ignited until thermostat circuit or limit circuit
circulator remains on, if the limit circuit opens.
3. When a limit control opens, the
main gas valve is de-energized, but circulator con-
tinues to run. When the limit circuit closes again,
the main gas valve is energized if there is still a call
for heat.
4.
as shown on wiring diagram,
Part Number 550-101-009/0107
-
Set heat anticipator
.