!WARNING
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury or death.
If holes are found in the pipes or if any portion has become disconnected, toxic fumes can escape into your home. DO NOT OPERATE YOUR FURNACE. Call your dealer for service.
Check the
When dirt, soot, scale, or rust is allowed to build up, your furnace can suffer a loss of efficiency and perform improperly. Accumulations on the main burners can result in firing out of normal sequence. This delayed ignition creates an alarmingly loud sound.
!CAUTION
UNIT OPERATION HAZARD
Failure to follow this caution may result in property damage.
If your furnace makes an especially loud noise when the main burners light, shut down your furnace and call your dealer.
To inspect the combustion area and vent system, you will need a flashlight. Refer to Fig. 3 and proceed as follows:
1.Turn off the gas and electrical supplies to the furnace and remove the main furnace door. (See Fig. 8, 9, and 10.)
2.Remove burner enclosure front. (See Fig. 33.)
Inspect the gas burners, igniter area, and remainder of furnace for dirt, rust, soot, or scale.
!WARNING
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury or death.
If dirt, rust, soot, or scale accumulations are found, call your dealer. Do not operate your furnace.
3.Inspect the
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 the furnace and observe its operation. Watch the burner flames to see if they are clear blue, almost transparent. (See Fig. 34.) If you observe a suspected malfunction, or the burner flames are not clear blue, call your dealer.
A00223
Fig. 33 - Remove Burner Enclosure Front
A92330
Fig. 34 - Burner Flame
HEADING SOUTH FOR THE WINTER? DON’T FORGET YOUR FURNACE!
!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 (0_C) or lower, freeze protection measures must be taken to prevent minor property or product damage.
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 (0_C) or lower unless winterized. Follow these procedures to winterize your furnace:
1.Obtain propylene glycol (RV/swimming pool antifreeze or equivalent).
!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.
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