User Manual

2. Check for discolored heat tape insulation. If any damage or
discolored insulation is evident, replace heat tape.
3. Check that heat tape power supply circuit is on.
X. WINTERIZING
CAUTION: 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 main furnace door.
3. Disconnect drain tube from inducer housing. (See Fig. 13.)
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. 14.)
5. Reconnect drain tube to inducer housing.
6. Replace main furnace door.
CAUTION: Do not use ethylene glycol (Prestone II
antifreeze/coolant or equivalent automotive type). Failure
of plastic components will occur.
→ Fig. 13—Inducer Housing Drain Tube
A99118
→ Fig. 14—Funnel in Drain and Antifreeze Running
Through Trap
A99119
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