UTICA BOILERS PEG075EID Installation, Operation & Maintenance Manual page 27

Figure 20 - Ladder Diagram For Boilers With CG 400-2060 Probe Type Low Water Cut-Off
L
LOW WATER
CUT OFF
JP1-2
JP1-A
JP1-
BURNER
JP1-P2
JP2-1
NOTE:
CONNECTOR POSITION 3 IS
LABELED 1 ON LWCO CIRCUIT
BOARD JP2 MOLEX CONNECTOR
(For full-sized Wire Diagrams, see Literature Envelope.)
HIGH VOLTAGE CONNECTIONS PER NEC AND LOCAL CODES
JP1-1
JP1-P1
PROBE
CUT OFF PROBE
JP2-2
JP2-3
BLOCKED VENT
SWITCH
PRESSURETROL
WIRE DIAGRAMS
120V / 24V, 50VA
TRANSFORMER
R C
NEC CLASS 2
LOW VOLTAGE
LOW WATER
VENT DAMPER
(R) T (W) T
THERMOSTAT
IGNITION MODULE
24V
24V
(GND)
MV SPARK
MV/PV SENSE
GND
PV
(BURNER)
GAS VALVE
PV GND
MV/PV MV
27
2 4
ROLL OUT
SWITCH
1 3
SPARK
IGNITOR
N