11
3. Inspect the combustion-air and vent PVC pipes for sags, holes, cracks, water leaks, blockage or disconnections. Horizontal
portions of vent pipe must slope downward toward furnace.
UPFLOW
31
DOWNFLOW
32
4. Reinstall burner enclosure front.
5. If your furnace is free of the above conditions, replace main furnace door and turn on electrical and gas supplies to the
furnace. (See Fig. 13, 14, and 15.)
6. Start your furnace and observe its operation. Watch the burner
fl
ames to see if they are clear blue, almost transparent. (See
Fig. 33.) If you observe a suspected malfunction, or the burner
fl
ames are not clear blue, call your dealer.
33
HEADING SOUTH FOR THE WINTER?
DON’T FORGET YOUR FURNACE!
Since the furnace uses a condensing heat exchanger, some water will accumulate in the unit as a result of the heat transfer process.
Therefore, once it has been operated, it cannot be turned off and left off for an extended period of time when temperatures will reach
32°F or lower unless winterized. Follow these procedures to winterize your furnace:
1. Obtain propylene glycol (RV/swimming pool antifreeze or equivalent).
2. Turn off electrical supply to your furnace. (See Fig. 21.)
3. Remove main furnace door. (See Fig. 22.)
4. Remove upper inducer housing drain connection cap. (See Fig. 34.)
5. Connect
fi
eld-supplied 1/2-in. ID tube to upper inducer housing drain connection.
6. Insert
fi
eld-supplied funnel into tube.
7. Pour 1 quart of antifreeze into funnel/tube. Antifreeze should run through inducer housing, over
fi
ll condensate trap, and
fl
ow
into open
fi
eld drain. (See Fig. 35.)
CAUTION:
UNIT AND PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in damage to the furnace and other property damage.
If the furnace is installed in an unconditioned space where the ambient temperatures may be 32°F or lower,
freeze protection measures must be taken to prevent minor property or product damage.
CAUTION:
UNIT COMPONENT DAMAGE HAZARD
Failure to follow this caution may result in damage to the furnace and other property damage.
Do not use ethylene glycol (Prestone II antifreeze coolant or equivalent). Failure of plastic components may
occur.
!
!
