035-19671-002 Rev. A (0704)
2
Unitary Products Group
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 - 6” before each
heating season. Use Figure 3 for visual reference.
1.
Examine the heat exchanger, vent pipe, combustion air passes-
ges, 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.
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 2 as a compari-
son to the actual flame.
FIGURE 1:
Component Locations
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.
BLOWER
PRESSURE
SWITCH
BURNER
ASSEMBLY
GAS VALVE
VENT PIPE
INDUCER
ASSEMBLY
INDUCER
MOTOR
INTEGRATED
CONTROL
R
E
P
L
A
C
E
R
E
P
L
A
C
E
SCRE
W
SCRE
W
PM
C
HI
O
F
F
O
F
F
ON
ROLLOUT
SWITCH
ELECTRICAL
JUNCTION BOX
LIMIT CONTROL
SAFETY SHUTOFF
SWITCH
FIGURE 2:
Burner Flame Drawing
BLUE CONE PORTION OF FLAME SHOULD
ENTER HEAT EXCHANGER TUBE
FIGURE 3:
Furnace Examination Checkpoints
4 EXAMINE
FURNACE
CASING
6
5
3
4
3
1
6
EXAMINE
RETURN AIR
DUCT
CONNECTION
REMOVE
PANEL
TO EXAMINE
BURNER
FLAMES
EXTERNAL HEAT EXCHANGER INTERNAL
VENT COMBUSTION AIR PIPE. MUST
REMOVE PANEL TO EXAMINE.
EXAMINE ENTIRE
FURNACE CASING
SHOWN IN ALL
DRAWINGS
EXAMINE
RETURN AIR
DUCT
CONNECTION
(side or bottom)
REMOVE
PANEL
TO EXAMINE
BURNER
FLAMES
EXAMINE EXTERNAL
VENT PIPE
EXAMINE
FURNACE
CASING
BURNER DOOR
BLOWER DOOR
