Install Instructions

45
7 Field wiring (continued)
Figure 7-4 Control Inputs/Outputs
TANK SENSOR
LOW VOLTAGE
CONNECTION
BOARD
INLET TEMPERATURE
SENSOR
OUTLET TEMPERATURE /
HIGH LIMIT SENSOR
FLUE GAS SENSOR
FLAME SENSOR
LOW WATER CUTOFF
BLOCKED DRAIN SWITCH
DISPLAY PANEL
CONTROL BOAR
D
BLOCKED AIR PRESSURE SWITCH
IMG00484
LOUVER PROVING
SWITCH
ENABLE SWITCH
DOOR TEMPERATURE SWITCH
LOW VOLTAGE
CONNECTION
BOARD
CONTROL BOARD
ALARM BELL
RUN TIME CONTACTS
WHR PUMP
IGNITOR
BLOWER
GAS VALVE
DISPLAY PANEL
LOUVER
RELAY
IMG00484
INPUTS
OUTPUTS
Installation & Service Manual