Use and Care Manual

1010352-UUM-J-0818
2 Johnson Controls Unitary Products
5. Should the gas supply fail to shut off or if overheating occurs, shut
off the gas valve to the furnace before shutting off the electrical sup-
ply.
6. Do not use this furnace if any part has been under water. A flood-
damaged furnace is extremely dangerous. Attempts to use the fur-
nace can result in fire or explosion. A qualified service agency
should be contacted to inspect the furnace and replace all gas con-
trols, control system parts, electrical parts that have been wet or the
furnace if deemed necessary.
7. NEVER . . . Store flammable materials of any kind near your fur-
nace. Gasoline, solvents, and other volatile liquids should be stored
only in approved containers outside your home. These materials
vaporize easily and are extremely dangerous.
8. NEVER . . . Store cleaning materials near your furnace. Materials
such as bleaches, detergents, powdered cleansers, etc., can cause
corrosion of the heat exchangers.
9. NEVER . . . Use the area around your furnace as a storage area for
items which could block the normal flow of air. This flow of air is
required for ventilation of the various furnace components.
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 1 - 4 for visual reference.
FIGURE 1: Component Location - 80% Single & Two Stage Models FIGURE 2: Component Location - 95% Single & 96% Two Stage Models
Vent Pipe
Pressure
Switch
Silicone
Tube
Rollout
Safety Switch
Gas Valve
Flame
Sensor
Induced Draft
Assembly
Induced
Draft Motor
Limit
Switch
Ignitor
Manifold Pipe
Safety
Door
Switch
Control Board
Flue Collar
Electrical
Junction
Box
Blower
Transformer
Capacitor
(Not used on all models)
Power Factor
Choke
(Not used on
all models)
Vent Pipe
Pressure Switch
Manifold
Pipe
Rollout Safety Switch
Gas Valve
Flame Sensor
Manifold Draft
Assembly
Limit Switch
Ignitor
Safety
Door
Switch
Control Board
Electrical
Junction
Box
Blower
Transformer
Capacitor
Condensate Pan
Silicone
Tube
(Not used on all models)
Power Factor
Choke
(Not used on
all models)
FIGURE 3: Component Location - 80% Modulating ECM Models FIGURE 4: Component Location - 97% Modulating ECM Models
Pressure
Switch
Pressure
Sensor
Silicone
Tube
Rollout
Safety Switch
Gas Valve
Flame
Sensor
Induced Draft
Assembly
Induced
Draft Motor
Limit Switch
Ignitor
Manifold
Pipe
Safety
Door Switch
Control
Board
Flue
Collar
Electrical
Junction Box
Blower
Transformer
Power Factor
Choke
ECM MOTOR
(Not used on
all models)
Vent Pipe
Pressure
Switch
Manifold
Pipe
Rollout
Safety Switch
Gas Valve
Flame Sensor
Draft Inducer
Assembly
Limit Switch
(Behind gas valve)
Ignitor
Safety
Door Switch
Control
Board
Electrical
Junction Box
Blower
Transformer
Condensate
Pan
Silicone Tube
ECM MOTOR
Power Factor
Choke (Not
used on all
models)