Trane UHMB060ACV3VA Series Service Facts page 17

2. FILTERS – Filters should be cleaned or replaced
(with high velocity filters only), monthly and more
frequently during high use times of the year such
as midsummer or midwinter.
3. BLOWERS – The Blower size and speed determine
the air volume delivered by the Furnace. The
Blower motor bearings are factory lubricated and
under normal operating conditions do not require
servicing. Annual cleaning of the Blower wheel and
housing is recommended for maximum air output,
and this must be performed only by a qualified
servicer or service agency.
4. IGNITER – This unit has a special hot surface di-
rect ignition device that automatically lights the
burners. Please note that it is very fragile and
should be handled with care.
CAUTION
!
Do NOT touch igniter. It is extremely hot.
5. BURNER – Gas burners do not normally require
scheduled servicing, however, accumulation of for-
eign material may cause a yellowing flame or de-
layed ignition. Either condition indicates that a ser-
vice call is required. For best operation, burners
must be cleaned annually using brushes and
vacuum cleaner.
Turn off gas and electric power supply. To clean
burners, remove Burner Box cover (6 to 8 screws)
and top burner bracket. Lift burners from orifices.
NOTE:
Be careful NOT to break igniter when removing burn-
ers.
Clean burners with brush and/ or vacuum cleaner.
Reassemble parts by reversal of the above proce-
dure. The Burner Box must be resealed when re-
placing box cover.
NOTE:
Natural gas units should not have any yellow tipped
flames. This condition indicates that a service call is re-
quired. For best operation, burners must be cleaned
annually using brushes and vacuum cleaner.
NOTE:
On LP (propane) units, due to variations in BTU content and
altitude, servicing may be required at shorter intervals.
6. HEAT EXCHANGER/ FLUE PIPE – These items
must be inspected for signs of corrosion, and/ or de-
terioration at the beginning of each heating season
by a qualified service technician and cleaned annu-
ally for best operation. To clean flue gas passages,
follow recommendations below:
UHM-DHM-SF-1H
Service Facts
a. Turn off gas and electric power supply.
b. Inspect flue pipe exterior for cracks, leaks, holes
or leaky joints. Some discoloration of PVC pipe is
normal.
c. Remove burner compartment door from Fur-
nace.
d. Inspect around insulation covering flue collector
box. Inspect induced draft Blower connections
from recuperative cell and to the flue pipe con-
nection.
e. Remove burners. (See 5. Burner)
f. Use a mirror and flashlight to inspect interior of
Heat Exchanger, be careful not to damage the Ig-
niter, Flame Sensor or other components.
g. If any corrosion is present, the Heat Exchanger
should be cleaned by a qualified service techni-
cian.
h. After inspection is complete replace Burner Box
cover, burners, and Furnace door.
i. Restore gas supply. Check for leaks using a soap
solution. Restore electrical supply. Check unit for
normal operation.
7. COOLING COIL CONDENSATE DRAIN - If a cool-
ing coil is installed with the Furnace, condensate
drains should be checked and cleaned periodically to
assure that condensate can drain freely from coil to
drain. If condensate cannot drain freely water dam-
age could occur. (See Condensate Drain in
Installer's Guide.)
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