Tus neeg siv phau ntawv

506244-01G / 49-5000677 Issue 2205 Page 5 of 7
Vent pipe must be clear and free of obstructions and must
slope upward away from the furnace.
CARBON MONOXIDE POISONING HAZARD
Failure to follow instructions could result in severe
personal injury or death due to carbon-monoxide
poisoning, if combustion products inltrate the building.
Check that all openings in the outside wall around
the vent (and air intake) pipe(s) are sealed to prevent
inltration of combustion products into the building.
Check that furnace vent (and air intake) terminal (s) are
not obstructed in any way during all seasons.
WARNING
Ductwork
Inspect the furnace return air duct connection to ensure
duct is sealed to the furnace and terminates outside the
space containing the furnace.
Inspect the physical support of the furnace to guarantee
that it is sound without sagging and it maintains a proper
seal between unit and ductwork.
Drain and Trap
On condensing furnaces (90% e󰀩cient and higher), inspect
the condensate drain and trap for leaks and cracks. The
drain and trap must also be cleaned and the trap must be
lled with water.
Blower (Circulating Air)
Check the blower wheel for debris and clean if necessary.
The blower motors are pre-lubricated for extended bearing
life. No further lubrication is needed.
The blower access panel must be securely in place
when the blower and burners are operating. Gas fumes,
which could contain carbon monoxide, can be drawn
into living space resulting in personal injury or death.
WARNING
Burner Temperature Switch
This unit is equipped with a burner temperature switch. In
the unlikely event of excessive burner heat, this switch will
shut o󰀨 the ow of gas by closing the gas valve. The switch
is located inside the gas burner area. Excessive burner
temperature can be caused by blockage of the power vent
system, a blocked heat exchanger, or reduced combustion
air. If this event occurs, the unit will not operate properly.
The gas supply to the unit should be shut o󰀨 and no attempt
should be made to place it in operation. The system should
be inspected by a qualied service technician.
Burner Flame
To ensure proper operation, a licensed professional
service technician (or equivalent) should check the
burner ame and conduct a combustion analysis
annually.
CAUTION
Cleaning/Replacing the Filter
It is very important to clean or replace the air lter regularly.
Dirty lters are the most common cause of inadequate
heating or cooling performance and can sharply increase
the operational costs of your unit. In some cases, they
can double the cost. The air lter should be inspected
at least every 6 weeks and cleaned or replaced as
required.
Your furnace may use either a disposable lter or a
cleanable lter. The type of lter may be indicated on a
label attached to the lter. If a disposable lter is used,
replace with the same type and size. To remove excess
dirt from a cleanable lter, shake lter and/or use a vacuum
cleaner. Wash lter in soap or detergent water and replace
after lter is dry. Cleanable lters do not need to be oiled
after washing.
NOTE: Cleanable lters may be replaced with disposable
lters. Consult with a service technician for more
information.
If your air distribution system has a central return air lter-
grille, the furnace does not need a lter. Filter-grilles can be
maintained the same way as cleanable lters (see above).
SERVICE REMINDER
Call your service technician if unit will not operate. Before
calling, always check the following to be sure service is
required:
1. Check that electrical disconnect switches are ON.
2. Check room thermostat for proper setting.
3. Replace any blown fuses or reset circuit breakers.
4. Gas valve should be ON.
5. Air lter should not be plugged, which will limit air ow.
6. Is gas turned on at meter?
7. Is manual main shut-o󰀨 valve open?
Record the model and serial number of the furnace. These
numbers are on the unit nameplate.
Serial Number: _________________________________
Model Number: _________________________________