TM 3-4230-209-10
2-17. HEATING WATER.
WARNING
If the pump unit assembly and the water heater are operated in an inclosed
area, the exhausts must be vented outside the inclosed area to prevent
carbon monoxide poisoning. A chemical-biological mask does not protect
against carbon monoxide fumes.
CAUTION
Circulate only clean water through the water heater. Do not circulate slurry or
any other mixture through the water heater. Do not use the heater when
metering fluids into the pump from the prime-detergent tank.
NOTE
Two procedures may be used for heating water depending on if water is to be
drawn from a natural source, heated, and discharged or if water in the tank
is to be heated. Generally if water is heated in the tank, higher water tempera-
tures can be reached since the water can pass through the water heater more
than once.
WARNING
Keep clear of the exhaust stack during operation of the water heater. A
chemical-protective mask does not protect against carbon monoxide gas.
CAUTION
To prevent damage to the water heater, place the HEATER RECEPTACLE
AND SWITCH on the pump unit control panel to ON and operate the pump
unit for two minutes with the heater control switch to PURGE ON before
igniting the boiler. This ensures that the boiler is filled with water and that all
air is out of the lines.
NOTE
An operator must be in attendance at all times during operation of the water
heater.
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