Slant/Fin B-120A Boiler User Manual


 
Bobcat Models B-120A and B-200A
21
ARGUS CONTROL PHC794-S1
J5
J2
J
6
J9
FUSE
GROUND
S
PARK
CABLE
SPARK IGNITOR
J13
J12
T2
Figure 16b. Boiler Control.
GND
NEUTRAL
HOT
L2
L1
120V/60HZ
120V
10V
120V
24V
M
M
DISPLAY
M
CHASSIS
GND
DISCONNECT
SWITCH
SPARK
ELECRODE
DHW CIRCULATOR
(IF USED)
BOILER
CIRCULATOR
COMBUSTION
BLOWER
BOILER ON/OFF
SWITCH
GAS
VALVE
SUPPLY WATER
SENSOR
RETURNWATER
SENSOR
FLUE GAS
SENSOR
OUTDOOR SENSER
(IF USED)
MICRO PROCESSOR
ON CONTROL BOARD
120V SECTION OF
CONTROL BOARD
LOW WATER CUT OFF
(IF USED) OR JUMPER
DHW THERMOSTAT
(IF USED) OR SENSOR
ROOM
THERMOSTAT
WATER HIGH
LIMIT
Figure 16c. Ladder wiring diagram.