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Service Manual
GAS PRESSURE SWITCH
DHW THERMOSTAT
FLOW SWITCH
TANK SENSOR
SEQUENCER / BUILDING
MANAGEMENT SYSTEM
LOW VOLTAGE
CONNECTION
BOARD
INLET TEMPERATURE
SENSOR
OUTLET TEMPERATURE
SENSOR
FLUE GAS SENSOR
HIGH LIMIT SENSOR
FLAME SENSOR
LOW WATER CUTOFF
BLOCKED DRAIN SWITCH
DISPLAY PANEL
PC INTERFACE
SMART SYSTEM
CONTROL BOAR
D
AIR PRESSURE SWITCH
Control inputs