2
UPFLOW FURNACE COMPONENTS
Relief Box
Rating Plate
Gas Valve Control Knob or Electric Switch (On/Off)
Gas Valve
Gas Burner
Flame Sensor
Filter Retainer
Air Filter
Blower and Blower Motor
Draft Safeguard Tube and Switch
Gas Manifold
Manual Reset Limit Switch
Hot Surface Ignitor
Blower Door Safety Switch
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
11
1
10
12
3
4
8
7
5
13
9
6
2
14
WELCOME TO
TODAY’S
GENERATION OF
COMFORT
Congratulations! Your new, higher effi-
ciency gas furnace is a sound invest-
ment which will reward you and your
family with years of warm memories
winter after winter.
Not only is your new furnace energy
efficient, it is also extremely reliable.
Spend just a few minutes with this
booklet to learn about the operation of
your new furnace—and the small
amount of maintenance it takes to keep
it operating at peak efficiency. Years
went into the development of your new
furnace. Take a little time now to assure
its most efficient operation for years to
come.
1
MODEL 480BAV
Upflow Furnace
2
MODEL 481BAV
Downflow/Horizontal
Furnace
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