GOLD CGa Gas-Fired Water Boiler — Boiler Manual
34
Part Number
550-101-009/0107
Operation — standing pilot boilers
8a
Figure 23
Wiring diagram — Standing pilot system
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.
3TANDBYMODE
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
,IGHTING)NSTRUCTIONS
INTHISMANUALANDONBOILER6ENT
damper will remain closed.
2.
#ALLFORHEAT
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.
4HISPROVIDESGASTOTHEMAINBURNERS"URNERSRE
-
main ignited until thermostat circuit or limit circuit
OPENS"URNERSANDCIRCULATORAREDEENERGIZEDWHEN
CALL FOR HEAT STOPS "URNERS ARE DEENERGIZED BUT
circulator remains on, if the limit circuit opens.
3.
,IMITOPERATION
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.
4HERMOSTATHEATANTICIPATOR
Set heat anticipator
as shown on wiring diagram,
&IGURE
.
