TM 10-3510-220-10
2-2.
LOCATION AND USE OF CONTROLS AND INDICATORS. (CONT)
Key
Control or Indicator
Function/Use
1
2
3
4
5
6
7
Vent Valve
Water Temperature Gage
Motor Contactor Reset
Flame Safeguard Control
Reset
Buzzer
Hour Meter
Water Temperature Control
8
Load Limit Switch
(Water heater switch)
9
Fuel Pressure Gage
10
Manual Fuel Shutoff
Valve
11
Blower Motor Overload
Reset
Allows the operator to bleed
heater.
Indicates temperature of water
the washer assembly.
Over current reset devices that
air from water
being supplied to
break the circuit
to the blower motor, if motor input leads are
overloaded.
Lockout switch for flame safeguard control
system.
When pressed, resets electrical circuit
to allow ignition in water heater combustion
chamber.
Alerts the operator that his/her attention is
needed at the water heater controls.
Indicates length of time that burner has been in
operation.
A calibrated dial to set the desired outlet water
temperature between 0° and 250°F (-18 and
+121°C).
Operates burner to maintain outlet
water temperature between 182° and 210°F (83
and 99°C).
Single-throw switch used to disconnect power to
motor, ignition transformer, and all electrical
controls on water heater.
Registers pressure of fuel being supplied to
burner.
Starts and stops flow of fuel to burner.
a. Valve turned clockwise closes valve and stops
flow of fuel to burner.
b. Valve turned counterclockwise opens valve
and starts flow of fuel to burner.
Overload protection for motor.
(Located on far side of motor)
2-8
