# 47860A005
Page 21
Figure 32
Bottom Filter Location
Filter
Base
Side
Filter Rack Mounting Hole
Screw
Filter Rack
Corner Embossments
Front of Cabinet
Filter Rack Installation
Figure 31
Table 3
Minimum Filter Requirements
1. The Airflow Descriptor is the two digits following
the “D” in the model number.
2. Areas and dimensions shown for cleanable filters
are based on filters rated at 600 feet per minute
face velocity.
3. Typical filter sizes are shown; however, any
combination of filters whose area equals or
exceeds the minimum area shown is satisfactory.
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1
1. Set the room thermostat to lowest setting.
2. Remove burner access door.
START-UP
These furnaces are equipped with an ignition device
which automatically lights the burners.
Do not try to light
the burners by hand.
Before operating,
smell all around the appliance area for
gas. Be sure to smell next to the floor because some gas
is heavier than air and will settle on the floor.
What to do if you smell gas:
•
Do not try to light any appliances.
•
Extinguish any open flame.
•
Do not touch any electric switch; do not use any
phone in your building.
•
Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
•
If you cannot reach your gas supplier, call the fire
department.
Do not use this furnace if any part has been under water.
Immediately call a qualified service technician to inspect
the furnace and to replace any part of the control system
and gas control which has been under water.
IMPORTANT: Refer to the Lighting Instruction label on
the furnace for instructions on operating the specific
controls used on your unit.
To Start Furnace:
Lighting Instructions
For Your Safety, Read Before Operating
If you do not follow these instructions exactly,
a fire or explosion may result causing prop-
erty damage, personal injury, or loss of life.
WARNING
Be sure the manual gas control has been in
the “OFF” position for at least 5 minutes
before starting the unit. Do not attempt to
manually light the burners.
CAUTION
