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FIRE OREXPLOSION
HAZARD
Failure to follow this warning
could result in personal
iniury, 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 iniury or loss of
life.
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
[]NIT
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.
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.
1. Obtain propylene glycol (RV/swimming pool antifreeze or
equivalent).
2. Turn off gas and electrical supplies to your fllmace.
3. Remove fllmace control door.
4. Remove the top unused robber plug from the port on the
collector box opposite the condensate trap. See Fig. 59.
5. Connect a field supplied
3/8-in. (9.5-mm) ID tube to the
open port on the collector box.
6. Insert a field supplied flmnel into the tube.
7. Pour 1 quart of anti-freeze solution into the flmnel/tube.
Antifreeze should mn through the inducer housing, overfill
condensate trap and flow to an open drain.
8. Replace the robber plug in the port on the collector box.
9. Remove the middle unused robber plug from the port on the
collector box opposite the condensate trap. See Fig. 59.
10. Repeat Steps 5 through 8.
11. If a condensate pump is used, check with pump manufacturer
to verify pump is safe for use with antifreeze used. Allow
pump to start and pump anti-freeze to open drain.
12. Replace main door.
13. When fllmace is re-started, flush condensate pump with clear
water to check for proper operation before re-starting fllmace.
14. Propylene glycol need not be removed before re-starting
furnace.
71
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