TM 3-4230-237-10
0007 00
HEATING WATER Continued
3. Prime the pump. Start the pump unit (Page 0006 00-1). Place HEATER RECEPTACLE AND SWITCH to ON. Pump
water heater full of clean water. Operate HEATER ON for at least 2 minutes before turning the THERMOSTAT to selected
temperature setting.
WARNING
If the water heater does not ignite in 10 seconds, turn the heater THERMOSTAT to OFF. Do not attempt
to start the water heater. Refer to Work Package 0014 00 for operator troubleshooting procedures.
Remove electrical power by placing the HEATER RECEPTACLE AND SWITCH on the pump unit to
OFF.
4. Do not allow the temperature of water in the boiler to exceed 200F ( 12). If it does, the heater will automatically shut
off.
5. Water may be discharged through the gun assemblies or through the shower by opening either VALVES NO. 2 or 3
(location illustrated) while water is being heated. Also when the heater is in operation, fresh water may be continuously
added to the tank from a hydrant or hose. VALVE NO. 1 can control the temperature of water by metering the water flow
through the heater. Do not allow the pump pressure to fall below 60 psi.
VALVE NO. 2
VALVE NO. 3
VAVALVENO.22
LVE NO.
DECONTAMINATING APPARATUSM12A1
VALVE NO. 3
UPPEVEEEO.
VAL R R NL
3
LOWER REEL
SERNO.
NSN
PBAUP RA EDATE
G D
U.S.
FUEL
FUEL INDICATOR
HEATER OFF
VVALVE NOO. 1
AL VE N .1
REATEPTACLE OFF
HEC ER
HOUR METER
RECEPTACLE
AND SWITCH
AND
MANIFOLD
ON
HOURMET-
SWITCH ON
SLAVEE
SLAV
RECEPTACLE
CAUTION
TO AVOID FREEZE DAMAGE KEEPPUMP
DRAIN VALVE OPEN WHEN EQUIPMENT IS
NOT IN OPERATION.
OPPN
OE -
DRAIN
DRA-
VALVRIMEO.44
VALVE NO.
EN
OP- N
CLOSE-
CLOSD
CLOS
P
OPE
STOPPING THE WATER HEATER
1. When the required amount of water is heated to the desired temperature, stop the water heater by performing the following
steps.
a.
Turn the THERMOSTAT control knob OFF. After combustion ceases, operate for 2 minutes. Turn HEATER ON-
OFF switch to OFF position.
b.
Place HEATER RECEPTACLE AND SWITCH on pump unit to OFF.
NOTE
If you are heating water in tank unit for mixing chemicals other than STB, disregard temperature and time
requirements.
c.
Continue to cycle water through the boiler for at least 3 minutes or until the water temperature is approximately
100 F as indicated on the WATER TEMPERATURE gage.
