Structural Cross-Section Of Operation Unit - andrews Fastflo WHC56 Service Manual

Structural Cross-section of Operation Unit

< WHC56, LWHC56>
Frost sensing switch
Drain trap
Water level electrode
(Front side:No.2)
(Back side:No.1)
Main flow control valve
Heat exchanger
thermistor
Flame rod
Bypass flow control valve
Fan motor
Water outlet thermistor
Transformer
Hot water outlet
Condensate drain outlet
Air inlet
Water filter
Flue collar
Power cord
Cold water inlet
Water flow sensor
Water inlet thermistor
– 3 –
Secondary heat exchanger
Primary heat exchanger
High-limit switch
Thermal fuse
Ignition electrode
Manifold
Igniter
PCB
Gas solenoid valve
Gas proportioning valve
Current leakage
safety device
Remote controller
terminal
Gas inlet