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!
WARNING:
Do not operate your furnace if you
find any of the following conditions.
Such conditions may allow toxic
fumes to escape into your home:
• Obstructions or restrictions in
the vent pipe and/or chimney.
• Holes or cracks in the vent pipe.
• Visible corrosion in the vent pipe.
• Horizontal vent pipes that do not
slope upward.
If any of the above conditions are found
in the vent pipe, call a qualified service
technician to install new vent pipe.
For 80+ upflow and downflow models only:
Burner Maintenance (NOx), If the second or
eighth character of the model number is an “N”
the furnace has factory installed NOx reduction
inserts. The inserts reduce the NOx emissions
of the furnace. The NOx reduction inserts are
located in the first pass of the top portion of the
heat exchanger. When the burners are
operating, the flame should extend through the
center of the NOx reduction inserts. The flame
color should be blue, however some light yellow
streaks may occur on the outer portions of the
flame.
Inspect the burners, mounting brackets, and all
other parts in the vestibule for signs of
deterioration. The burner vestibule should be
vacuumed clean and inspected annually.
!
CAUTION:
Do not strike any of the internal
electrical components while
vacuuming.
6. Operating Instructions
READ THE SAFETY INFORMATION ON
THE FOLLOWING PAGE BEFORE
OPERATING.
!
WARNING:
Should overheating occur, or the gas
supply fail to shut off, shut off the
manual gas valve to the furnace
before shutting off the electrical
supply.
!
ADVERTISSEMENT:
En cas de température excessive, ou
s’il est impossible de couper
l’alimentation en gaz, fermer le robinet
manuel d’alimentation en gaz du
générateur d’air chaud avant de
couper l’alimentation électrique.
These furnaces are equipped with roll-out limit
switch(s), a vent safety switch, and a pressure
switch (See Figures 1, 2, 3 and 4). The pressure
switch verifies that the flame is receiving
combustion air. If the flame is not drawn into the
heat exchanger tube, the roll out limit switch or
flame sensor, will shut the furnace down.
The vent safety switch shuts the furnace down
if the vent becomes blocked or restricted.
Furnace Fails To Operate — If the furnace
does not operate, check the following:
1) Is the thermostat operating properly?
2) Are the blower door(s) in place?
3) Is the furnace disconnect closed?
4) Has the circuit breaker tripped (or fuse
blown)?
5) Is the gas turned on?
6) Is the filter dirty or plugged?