2-8. PREPARATION FOR USE. (CONT)
Use only specified fuel (item 10, app C). Failure to do so may result in death or
serious injury to personnel or damage to equipment.
Remove priming plug (5) and prime fuel pump (6) by pouring fuel into the line. Install
Open air shutter (7) halfway.
Open the door to control panel (8) and press FLAME SAFEGUARD reset button.
Close control panel.
Set water temperature control (11) to the desired setting. (Refer to FM 10-280, Field Laundry
Clothing Exchange and Bath Operations, for water temperatures.)
Place load limit switch (1) to the ON position.
Do not touch exhaust ducts while running or immediately after shutdown, as severe
burns may result.
The water heater burner is equipped with an ultraviolet (UV) scanner and a flame
safeguard control unit to purge fumes or vapor from the combustion chamber prior
to ignition. The control unit will also cause a safety shutdown if the burner does
not ignite within a preset time.
Check fuel pressure gage (10) for an indication of 75 to 80 psi (517 to 552 kPa). If the
pressure gage does not indicate 75 to 80 psi (517 to 552 kPa) within 15 seconds, place load
limit switch (1) to the OFF position and repeat steps (1) through (9) until a minimum of 75 to
80 psi (517 to 552 kPa) is indicated on pressure gage (10). After three unsuccessful
attempts, notify your supervisor.
As soon as 75 to 80 psi (517 to 552 kPa) is reached, open fuel shutoff valve (4) one full turn.
The burner should ignite within 20 seconds and be visible in sight glass combustion chamber
(12). Open valve fully.
Change 1 2-54