Carrier 58UVB - Manual (Page 12)

12
A92330
Fig. 37 -- Burner Flame
Heading South for the Winter?
Don’t Forget Your Furnace!
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
!
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).
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.
CAUTION
!
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.