Ventilation Mode Operation (Refer to Figure 2-6)
Perform assembly and preparation for use procedures in paragraph 2-7.
Operate 50/60 hertz, 120 vac power source in accordance with applicable Technical Manual.
Do not operate unit without fuel. Operation without fuel will result
in damage to fuel pump.
Never attempt to operate the ASH Unit with the fuel selector valve
handle in a vertical position. Fuel will not flow with the handle in
the vertical position. The fuel selector valve handle must be in a
Set the MODE SWITCH (1) in the VENT position. The ventilation motor/fan should begin
Push fuel PURGE SWITCH (2) upward to ON position for 10 seconds to purge fuel lines of air.
Fuel pressure gage (3) indication will drop while switch (2) is in ON position and return to
approximately 20 psig when released.
Adjust the fresh air damper (4) for the desired amount of fresh air by releasing the chain (5) and
allowing it to feed into the damper assembly.
Figure 2-6. Operation, Ventilation Mode