Step 10—Winterizing
Freezing condensate left in the furnace will damage the
equipment.
If the furnace will be off for an extended period of time in a
structure where the temperature will drop to 32°F or below,
winterize as follows:
1. Turn off electrical supply to furnace.
2. Remove furnace door.
3. Disconnect drain tube from inducer housing. (See Fig. 16.)
4. Insert funnel in drain tube and pour antifreeze, propylene
glycol (RV, swimming pool antifreeze, or equivalent) into
furnace until it is visible at point where condensate enters open
drain. (See Fig. 17.)
5. Reconnect drain tube to inducer housing.
6. Replace furnace door.
Do not use ethylene glycol (Prestone II antifreeze/coolant or
equivalent automotive type). Failure of plastic components
will occur.
Fig. 16—Inducer Housing Drain Tube
A94208
Fig. 17—Funnel in Drain and Antifreeze Running
Through Trap
A94209
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