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15
WIRING DIAGRAMS AND COMPONENT CODING
24 VOLT GAS CONTROL WITH ELECTRONIC LOW WATER CUT-OFF
COMPONENT CODE
TH-1 THERMOSTAT
(MILLIVOLT)
TH-2 THERMOSTAT (24 VOLT)
TH-3 THERMOSTAT (LINE VOLTAGE)
TR-1 TRANSFORMER
(120V/24V
40VA)
TR-2 TRANSFORMER
(120V/24V
50VA)
MGV
MILLIVOLT GAS VALVE
LGV
24 VOLT GAS VALVE
LGV-1 24 VOLT GAS VALVE
PS PRESSURE
SWITCH
MR-PS MANUAL RESET PRESSURE SW.
SD STACK
DAMPER
CONTROL TERMINAL
1 K
RELAY COIL
1 K1
RELAY CONTACTS
1 K2
RELAY CONTACTS
LS LIMIT
SWITCH
MS MANUAL
SWITCH
CIR CIRCULATOR
ECO ENERGY
CUT-OFF
LWCO LOW WATER CUT-OFF
EWF
ELECTRIC WATER FEEDER
PG POWER
GENERATOR
PSC
PILOT SAFETY COIL
WIRE
CONNECTION
NOT ALL COMPONENTS LISTED
ARE USED IN ALL CONTROL
SYSTEMS
WIRING
LINE VOLTAGE BY FACTORY
LOW VOLTAGE BY FACTORY
LINE VOLTAGE BY INSTALLER
LOW VOLTAGE BY INSTALLER
NOTES:
1.
Switches are shown in position
taken during the heating cycle.
2.
If any of the original wiring
supplied with the boiler is
replaced, it must be replaced
with like wire, size, and type of
insulation or equivalent
Содержание CEG-C
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Страница 32: ...COLUMBIA COMPANY Main offices and factory Pottstown PA ...