Aerovent IM-500 - Manual (Page 19)

19 Aerovent IM-500
CARE OF HEATER FOR EXTENDED SHUTDOWN
PERIODS
If the unit is to be shut down for an extended period of
time, the following precautions should be followed.
1. Turn off all manual shutoff valve(s) at the unit, and in
the gas supply line to the unit.
2. Turn off the electrical supply to the unit at the unit’s
disconnect. Lock the disconnect to prevent tampering.
3. If the unit is supplied with filters, remove and store
filters.
4. Protect outside air opening to prevent the unit from
being soiled.
5. Rotate prop/wheel monthly to lubricate bearings in the
fan/blower and motor.
Figure 20.