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435337-XUM-A-0209
FIRE OR EXPLOSION HAZARD
This furnace is designed and approved for use with Nat-
ural Gas and (LP) Propane Gas ONLY. DO NOT BURN
ANY LIQUID FUEL OR SOLID FUEL IN THIS FURNACE.
Burning any unapproved fuel will result in damage to the
furnace heat exchanger, which could result in Fire, Per-
sonal Injury, and/or Property Damage.
SECTION II: INSTRUCTIONS FOR
EXAMINING THE FURNACE
INSTALLATION
It is the owner's responsibility to ensure that an annual inspection of the
entire heating portion of the unit is made by a qualified service agency.
Examine the furnace as outlined below in steps "1 - 8" before each
heating season. Use Figures 2 - 3 for visual reference.
1.
Examine the heat exchanger, vent pipe, combustion air passages,
vent connectors and chimney to be sure they are clear and free of
obstructions.
2.
Examine the vent pipe making sure it is firmly in place, that it
slopes slightly upward and is physically sound without holes and
all of the connections are secure.
3.
Examine the return-air duct connections to make sure they are
physically sound, sealed to the furnace casing, and the ducts ter-
minate outside the space containing the furnace.
Silicone
Tube
Induced
Draft Motor
Pressure
Switch
Limit Switch
Electrical
Junction Box
Flame
Sensor
Safety
Door Switch
Blower
Transformer
FIGURE 2: Component Location - 80% Single Stage Models
2
4.
Examine the furnace casing making sure the physical support is
sound without sagging, cracks or gaps. Examine the furnace base
making sure it is physically sound without cracks, gaps or sagging
and has a good seal.
5.
Examine the furnace casing for obvious signs of deterioration.
6.
Examine the burner flames to make sure they are in good adjust-
ment. Refer to the pictorial sketch shown in Figure 1 as a compari-
son to the actual flame.
Blue Cone Portion of Flame Should
Enter Heat Exchanger Tube
FIGURE 1: Burner Flame Drawing (Upflow Configuration Shown)
7.
Examine and replace external air filters as needed to make sure
they are not blocked, and proper airflow is provided to the furnace.
8.
Examine any installed accessories or system components such as
evaporator coils to insure proper operation, drainage of conden-
sate, and that there is no water leakage or damage to the furnace
or any components.
Vent Pipe
Manifold
Pipe
Flue
Collar
Ignitor
Induced Draft
Gas Valve
Assembly
Ignitor
Electrical
Gas Valve
Junction Box
Rollout
Silicone Tube
Safety Switch
Manifold
Safety
Pipe
Door Switch
Control
Board
Transformer
Capacitor
Blower
FIGURE 3: Component Location - 95% Single Stage Models
Rollout
Safety Switch
Flame Sensor
Limit Switch
Vent Pipe
Pressure
Switch
Manifold Draft
Assembly
Condensate
Pan
Control
Board
Capacitor
Johnson Controls Unitary Products
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