Step 8—Checking Heat Tape Operation
(If Applicable)
In applications where the ambient temperature around the furnace
is 32°F or lower, freeze protection measures are required. If this
application is where heat tape has been applied, check to ensure it
will operate when low temperatures are present.
NOTE: Heat tape, when used, should be wrapped around the
condensate drain trap and drain line. There is no need to use heat
tape within the furnace casing. Most heat tapes are temperature
activated, and it is not practical to verify the actual heating of the
tape. Check the following:
1. Check for signs of physical damage to heat tape such as nicks,
cuts, abrasions, gnawing by animals, etc.
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.
If this furnace is to be operated in an unconditioned space
where the ambient temperatures may be 32°F or lower, freeze
protection measures must be taken. See CONDENSATE
DRAIN PROTECTION section of Installation, Start-up, and
Operating Instructions. (See Fig. 14.)
Step 9—Winterizing
Freezing condensate left in the furnace will damage the
furnace.
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 upper inducer housing drain connection cap from
inducer housing. (See Fig. 15.)
4. Connect field-supplied 1/2-in. I.D. inducer housing tube to
upper inducer housing drain connection.
5. Insert funnel in tube and pour one quart of antifreeze,
propylene glycol (RV, swimming pool antifreeze, or equiva-
lent) into funnel/tube until it is visible at point where conden-
sate enters open drain. (See Fig. 16.)
Do not use ethylene glycol (Prestone II antifreeze/coolant or
equivalent automotive type). Failure of plastic components
will occur.
6. Replace drain connection cap and clamp to inducer housing.
7. Replace main furnace door.
8. Propylene glycol need not be removed before restarting
furnace.
WIRING DIAGRAMS
See figures 12, 13 and 18 for the Deluxe 4-Way Multipoise
Furnace wiring diagrams.
TROUBLESHOOTING
Use the troubleshooting guide, the status code LED on the furnace
control and the component test to isolate furnace operation
problems.
A more detailed troubleshooting guide is available from your
distributor.
For an explanation of status codes, refer to service label located on
back of main furnace door (See Fig. 17.)
The furnace control stores all status codes for a period of 72 hours,
regardless of 115-v or 24-v power interruption.
NOTE: Removing blower access panel opens blower access
panel door switch and terminates 115-v power to furnace control.
Before removing blower access panel or turning off 115-v power,
look into blower access panel sight glass for current LED status.
1. To retrieve status code, proceed with the following:
NOTE: NO thermostat signal may be present at furnace control
and all blower time delay periods must be completed.
→ Fig. 12—Field Wiring
A95236
115-VOLT FIELD-
SUPPLIED
FUSED
DISCONNECT
JUNCTION
BOX
CONTROL
BOX
24-VOLT
TERMINAL
BLOCK
THREE-WIRE
HEATING-
ONLY
FIVE
WIRE
NOTE 2
NOTE 1
1-STAGE
THERMOSTAT
TERMINALS
FIELD-SUPPLIED
FUSED DISCONNECT
CONDENSING
UNIT
FURNACE
COM
R
WCY RG
GND
GND
FIELD 24-VOLT WIRING
FIELD 115-, 208/230-, 460-VOLT WIRING
FACTORY 24-VOLT WIRING
FACTORY 115-VOLT WIRING
Connect Y/Y2-terminal as shown for proper operation.
Some thermostats require a "C" terminal connection as shown.
If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
208/230- OR
460-VOLT
THREE
PHASE
208/230-
VOLT
SINGLE
PHASE
WHT
BLK
WHT
BLK
W/W1
W2
Y/Y2
G
NOTES: 1.
2.
3.
9
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