TM 3-4230-209-10
2-18. STOPPING THE WATER HEATER.
a. When the required amount of water is heated to the desired temperature, stop
the water heater by performing the following steps.
b. Place the heater control switch to PURGE ON. After combustion ceases, oper-
ate for two minutes in PURGE ON.
c. Place HEATER RECEPTACLE AND SWITCH on pump unit to OFF.
d. Continue to cycle water through the boiler for at least three minutes or until the
water temperature is approximately 100 F as indicated on the WATER TEM-
PERATURE gage.
CAUTION
Insure that water heater is cool before storing the main electrical power
cable and fuel hoses in the storage compartment.
e. Disconnect the main electrical power cable (2). Cap HEATER RECEPTACLE
AND SWITCH socket. Stow the main electrical power cable neatly in the stor-
age compartment of the water heater.
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