NORMAL MAINTENANCE
CAUTION: Prior to any of the following maintenance proce
-
dures, shut off all power to the unit to prevent per
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sonal injury.
Periodic maintenance normally consists of changing or cleaning
filters and (under some conditions) cleaning the main burners.
FILTERS - Inspect once a month. Replace disposable or clean
permanent type as necessary. DO NOT replace permanent
type with disposable.
MOTORS- Indoorfan andoutdoor fanmotors arepermanently
lubricated and require nomaintenance. Ventor motor is factory
lubricated for an estimated 10 year life.
OUTDOOR COIL - Dirt should not be allowed to accumulate on
the outdoor coil surface or other parts in the air circuit. Cleaning
should be as often as necessary to keep coil clean. Use a
brush, vacuum cleaner attachment, or other suitable means. If
water is used to clean coil, be sure power to the unit is shut off
prior to cleaning.
NOTE: Exercise care when cleaning the coil so that the coil
fins are not damaged.
Do not permit the outdoor air discharge to be ob
-
structed by overhanging structures of shrubs.
BURNER & PILOT - Periodically (at least annually at the
beginning of each heating season) make a visual check of the
pilot and main burner flame. If necessary, adjust main burner
primary air shutters so that no yellow flame is observed as
explained under “BURNER AIR SHUTTER ADJUSTMENT”. If
it is notpossible to adjust for theproper flame, the burners may
need cleaning.
TO CLEAN BURNERS - Remove them from the furnace as
explained in “Burner Instructions”. Clean burners with hot
water applied along top of the burner.
COMBUSTION AIR DISCHARGE - Visually inspect discharge
outlet periodically to make sure that thebuildup of soot and dirt
is not excessive. If necessary, clean to maintain adequate
combustion air discharge.
The manufacture recommends that the furnace system be
inspected once a year by a qualified service person.
CLEANING FLUE PASSAGES AND HEATING
ELEMENTS
With proper combustion adjustment the heating element of a
gas fired furnace will seldom need cleaning. If the element
should become sooted, it can be cleaned as follows:
1. Remove the burner assembly as outlined in “BURNER IN
-
STRUCTIONS”.
2. Remove the roof over the gas heat section.
3. Atthe topfront oftheheat section,remove thescrews hold
-
ing the top of the flue collector box. Carefully remove the
top of the flue collector box without ripping the adjacent in
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sulation.
4. Lift out the flue diverter baffle.
5. On the inside of the flue collector box, remove the screws
holding the flue baffle. Remove the flue baffle.
6. Using a wire brush on a flexible wand, brush out the inside
of eachheat exchanger fromthe burnerinlet and flueoutlet
ends.
7. Brush out the inside of the flue collector box and the flue
baffles.
8. Runthe wire brush down the vent tube from theflue collec-
tor end.
9. If soot build-up is particularly bad, remove the vent motor
and cleanthe wheel andhousing. Runthe wire brushdown
the flue extentions at the outlet of the vent housing.
10. After brushing is complete, blow all brushed areas with air
or nitrogen. Vacuum as needed.
11. Replaceparts inthe order theywere removed inSteps 1to 5.
12. When replacing the top of the flue collector box, be careful
so as not to tear the adjoining insulation.
13. Assure that all seams on the vent side of the combustion
system are air tight. Apply a high temperature (+500°F)
sealing compound where needed.
Unitary Products Group 17
035-14832-003-A-0204
MAINTENANCE
