79
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death, and/or property damage.
Never purge a gas line into a combustion chamber. Never
test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for the detection
of leaks to check all connections. A fire or explosion may
result causing property damage, personal injury or loss of
life.
!
WARNING
13. Replace main furnace door.
Secondary Heat Exchangers
The condensing side (inside) of the secondary heat exchanger
CANNOT be serviced or inspected without complete removal of
the heat exchanger assembly. Detailed information on heat
exchanger removal can be obtained from your Distributor.
WINTERIZATION
UNIT AND PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in unit component or
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.
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(0_C) or lower unless winterized. Follow these
procedures to winterize your furnace:
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 (automotive antifreeze coolant or
equivalent). Failure of plastic components may occur.
CAUTION
!
1. Obtain propylene glycol (RV/s w immi ng pool a nt ifreeze or
equivalent).
2. Turn of f gas and electr ica l supplies to your furnace.
3. Remove fur nace cont rol door.
4. Remove the top unused rubber plug from the port on the
collector box opposite the condensate tr ap. Se e Fig. 65.
5. Connect a field supplied 3/8--in. (9.5--mm) ID tube to the
open port on the collector box.
6. Ins ert a fi eld s upplied funne l into the tube .
7. Pour 1 quart of anti--freeze solution into the funnel/tube.
Antifreeze should run through the induc er housing, overfil l
condensa t e tr ap and flow to a n open dra i n.
8. Repl ace the rubbe r plug i n the port on the col l ector box.
9. Remove the middl e unuse d rubber plug from the port on the
collector box opposite the condensate tr ap. Se e Fig. 65.
10. Repe at St eps 5 through 8.
11. If a condensate pump is used, c heck wit h pump manuf acturer
to verify pump is safe for use with antifreeze used. Allow
pump to start and pump anti--freeze to open drain.
12. Repl ace main door.
13. Whe n furnace is re--st arted, flush condensa t e pump with cl ear
water to check for proper operation before re--starting furnace.
14. Propylene glycol need not be removed before re--starting
furnace.
2-1/2-in.
(64.4)
1-1/4-in.
(31.8)
A11405
Fig. 63 -- Igniter Position -- Top View
2ïin.
2.5 mm
3/8ïin.
3/16ïin.
+0.8
ï1.5 mm
50 mm
9.6 mm
4.6 mm
1/10ïin.
+ 1/32
ï 1/16ïin.
L12F041
Fig. 64 -- Igniter Position -- Side View
A11392
Fig. 65 -- Priming Condensate Trap
915SA
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