Carrier 58UVB manual Heading South for the Winter?, Don’t Forget Your Furnace, Burner Flame

A92330

Fig. 37 - 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 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 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.

2.Turn off electrical supply to the furnace. (See Fig. 19.)

3.Remove main furnace door. (See Fig. 22.)

4.Remove upper inducer housing drain connection cap. (See Fig. 38.)

A06456

Fig. 38 - Upper Inducer Housing Drain

Connection Cap

A06457

Fig. 39 - Pour Antifreeze

5.Connect field-supplied 1/2-in. ID tube to upper inducer housing drain connection.

6.Insert field-supplied funnel into tube.

7.Pour 1 quart of antifreeze into funnel/tube. Antifreeze should run through inducer housing, overfill condensate trap, and flow into open field drain. (See Fig. 39.)

8.Remove funnel and tube from inducer housing and replace drain connection cap and clamp.

9.Replace main furnace door. (See Fig. 33.)

10.Propylene glycol need not be removed before restarting furnace.

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