TM 3-4230-237-10
0004 00
Table 1. OPERATOR'S CONTROLS AND INDICATORS - Continued
WATER PRESSURE
WATER TEMPERATURE
FUEL PRESSURE
6
W
ER
AR
LD
ME
CO
R
THERMOSTAT
SYSTEM
CIRCUIT
BREAKER
HEATER
ON
OFF
5
Key
Control or Indicator
Function
Water Heater Control Panel - Continued
Controls operation of water heater. Placing this switch to HEATER
HEATER ON/OFF switch
5
ON energizes the blower motor, fan, fuel pump, and igniters. Turning
the THERMOSTAT clockwise to a temperature above the tank's water
temperature activates the fuel solenoid and admits fuel into the
combustion chamber for burner ignition.
Prevents damage to burner controls in case of electrical short circuit.
15 Amp SYSTEM CIRCUIT
6
BREAKER
W
ER
AR
LD
ME
CO
R
THERMOSTAT
SYSTEM
CIRCUIT
BREAKER
HEATER
ON
OFF
0004 00-12
