20
HOT
L1
DISCONNECT
SWITCH
BOILER ON/OFF
SWITCH
120V SECTION OF
CONTROL BOARD
120V
10V
MICRO
PROCESSOR
ON CONTROL
BOARD
Figure 15c. Ladder wiring diagram.
120V/60HZ
COMBUSTION
BLOWER
M
CIRCULATOR
WATER HIGH
LIMIT
120V
COMBUSTION
BLOWER
NEUTRAL
L2
BOILER
M
DHW CIRCULATOR
(IF USED)
GAS
VALVE
24V
ELECTRODE
"CALL FOR HEAT"
24V ROOM THERMOSTAT
OR ISOLATED CONTACT
DHW THERMOSTAT
(IF USED) OR SENSOR
SUPPLY WATER
SENSOR
FLUE GAS
SENSOR
OUTDOOR SENSOR
(IF USED)
Jaguar Model J-390
SPARK
LOW WATER CUT OFF
(IF USED) OR JUMPER
RETURN WATER
SENSOR
DISPLAY
GND
CHASSIS
GND