Owners Manual

4
Specifications subject to change without notice.
440 02 4501 00
FIRE AND EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death or property damage.
Should the gas supply fail to shut off or if overheating
occurs, turn off the manual gas valve to the furnace
BEFORE turning off the electrical supply and install
lockout tag.
!
WARNING
This furnace contains SAFETY DEVICES which must be
MANUALLY RESET. If the furnace is left unattended for an
extended period of time, have it checked periodically for
proper operation. This precaution will prevent problems
associated with no heat, such as frozen water pipes, etc. See
“Before You Request a Service Call” section in this manual.
!
CAUTION
UNIT OPERATION HAZARD
Failure to follow this caution may result in intermittent unit
operation.
For proper and safe operation the furnace needs air for
combustion and ventilation. Do not block or obstruct air
openings on the furnace, air opening to the area in which
the furnace is installed, and the space around the furnace.
BEFORE STARTING YOUR FURNACE
Examine the furnace installation to determine that:
1. All flue gas carrying areas external to the furnace are
clear and free of obstructions.
2. The vent connector is in place, slopes upward and is
physically sound without holes or gaps.
3. The return−air duct connection(s) is physically sound, is
sealed to the furnace casing, and terminates outside the
space containing the furnace.
4. The physical support of the furnace is sound without
sagging cracks, gaps, etc. around the base.
5. There are no obvious signs of deterioration of the
furnace.
6. The burner flames are in good adjustment, see Figure 5
(by comparison with pictorial sketches or drawings of the
main burner flame).
Figure 5 Burner Flame Adjustment
Burner Flame
Burner
Manifold
A11461
STARTING YOUR FURNACE
Your furnace uses an automatic, hot surface ignition system
to light the burners each time the thermostat signals the
furnace to start.
Follow these important safeguards:
S Never attempt to manually light the burners with a
match or other source of flame.
Figure 6 Do Not Light Burner with Match
A92319
S Read and follow the operating instructions on the
inside of main furnace door (see Figure 7) , especially
the item that reads as follows:
“Wait 5 minutes to clear out any gas. Then smell for
gas, including near the floor. If you smell gas, STOP!
Follow “B” in the safety information on this furnace
label. If you don’t smell gas, go to the next step.”
Figure 7
Operating Instructions Inside
Door
FOR YOUR SAFETY READ BEFORE OPERATING
L11F048
OPERATING
INSTRUCTIONS
S If a suspected malfunction occurs with your gas control
system, such as the burners do not light when they
should, refer to the shut down procedures on inside of
main furnace door, or in the “Shutting Down Your
Furnace” section and call your dealer as soon as
possible.
S CHECK AIR FILTER: Before attempting to start your
furnace, be sure the furnace filter is clean and in place.
See “Performing Routine Maintenance” section in this
manual. Do not run the furnace without a filter in place.
Then proceed as follows:
STEPS FOR STARTING YOUR FURNACE
1. Set your room thermostat mode to off and adjust the set
point to the lowest temperature setting.
Figure 8 Lowest Temperature Setting
40
L11F049