6
Furnace Maintenance
1.
Whileyouareaway
--- Your furnace as previously
mentioned is equipped with a safety device which will
shut off the supply of gas to the burner in case of mal -
function. For this reason it is never practical to assume
that the furnace will operate unattended for a long peri-
od of time, especially if there is a possibility of damage
to your property because of freezing. So, if you plan to
be away from home, arrange for someone to check
your house every day.
2.
Lubrication
--- At the beginning of each heating sea-
son turn off furnace system switch and add 4 to 6 drops
of a good qualit y SAE 20 motor oil (non---detergent) to
the oil cups (if provided) at each end of blower motor.
After oiling, wipe off any excess oil.
DO NOT OVER-- LUBRICATE
3.
Return Air
--- On some closet installa tions, the return
air opening to the furnace may be on the floor, and/or
on the door and/or on the side wall of the closet. The
upper grille on the front of the furnace admits return air
to the blow er. Return air must be provided back to the
circulating blower in order to provide air distribution.
IMPORT ANT NOTICE
Do not obstruct these openings including the grille on
the furnace. To do so will cause the furnace to activate
the high limit and shut down or it may cause asphyxi-
ation.
4.
Filters
--- F u r n a c e s ARE equipped with a filter. Filters
may be purchased from your installing dealer.
5.
Seasonal Service Information.
CAUTION
During extreme cold weather, ice may form on the
furnace roof jack crown. Small amounts of ice
forming on the roof jack will present no problem to
proper furnace operation. However, excessive ice
formation could restrict the combustion air supply
to the burner causing inefficient burner operation
and pilot outage.
When the temperature is very cold, near zero or be-
low, it is recommended that the roof jack be in-
spected every day or more frequently if required. If
ice has started to collect on the roof jack crown, it
should be carefully broken off.
WARNING
Carefully check the following to avoid fire, explo-
sion or asphyxia tion.
All appliances need periodic service at the beginning of
each heating season. Call your nearest authorized service
technician to:
1. Clean filters if used. Clean all lint a nd dust from around
furnace.
2. Remove fan and clean all dust and lint from unit w ith
stiff bristle brush.
3. Inspect combustion chamber, the transition into the
blower compartment, flue collar, and roof jack.
4. Check out line interruption of gas valve to see that it
does not leak.
5. Make any adjustments necessary for good operation.
NOTE
The coil panel provides a good removable access for in-
specting inside the furnace casing. Smoke or reflected light
inside the casing indicates the presence of leaks in the heat
exchanger.
CAUTION
(When furnace is installed with air conditioning)
If an air conditioner is i nstalled which does not
use the blower for air distribution and operates
completely independent of the furnace, the ther -
mostat system must have an interlock to pre-
vent the furnace and air conditioner from oper-
ating at the same time. This interlock system
usually contains a heat--cool switch which
must be turned to either HEAT or COOL to acti-
vate either heating or cooling operation. This
prevents potentially hazardous high tempera-
tures in any room if both systems operate at the
same time.
When used in connection with a cooling unit the
furnace shall be installed parallel with or on t he
upstream side of the cooling unit to avoid con-
densation in the heat exchanger.
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