10
FIGURE 9
DOWNFLOW FILTER INSTALLATION
A087001.S01
6. Be sure the physical support of the fur-
nace is sound, without sags, cracks,
etc. around the base so as to provide a
seal between the support and the base.
7. Look for the obvious signs of deteriora-
tion of the furnace.
8. If the furnace is free of the above condi-
tions, replace the access doors and
restore electrical power to the furnace.
9. Start the furnace and observe its opera-
tion. Watch the burner flames to see if
they are bright blue. If a suspected mal-
function is observed, or the burner
flames are not bright blue, call for
appropriate service.
CONDENSATE
This furnace is equipped with a pressure
switch which will shut off the main burners
if the condensate drain line becomes
blocked.
Be sure this condensate drain line does
not become blocked or plugged. Visual
inspection of the condensate flow can eas-
ily be made while the furnace is in opera-
tion. Use a flashlight to illuminate the dis-
charge end placed in the sewer opening.
See Figures 11, 12 & 13.
Clean and flush the condensate tube to
make sure condensate flows freely while
the furnace is in operation.
IMPORTANT:
IT IS RECOMMENDED
THAT AT THE BEGINNING OF THE
HEATING SEASON, THE CONDENSATE
TRAP BE INSPECTED BY A QUALIFIED
INSTALLER, SERVICE AGENCY OR THE
GAS SUPPLIER FOR DEBRIS OR
BLOCKAGE. A BLOCKED CONDENSATE
TRAP CAN CAUSE WATER TO BACK UP
INTO THE PRIMARY HEAT EXCHANGER
AND LEAD TO NUISANCE TRIPPING OF
THE OVER TEMPERATURE SWITCHES
OR PRESSURE SWITCHES.
IMPORTANT:
IT IS RECOMMENDED
THAT AT THE BEGINNING OF THE
HEATING SEASON THE CONDENSATE
NEUTRALIZER, IF USED, BE REPLACED
BY A QUALIFIED INSTALLER, SERVICE
AGENCY OR THE GAS SUPPLIER.
MARKINGS
It is recommended that an annual inspec-
tion and cleaning of all furnace markings
be made to assure legibility. Attach a
replacement marking, which can be
obtained through the distributor, if any are
found to be illegible or missing.
FIGURE 10
HORIZONTAL -- FILTER INSTALLATION
((-)GJD MODELS)
A087101.S01
AIR
FL
OW
AIR
FL
OW
A
IR
F
L
O
W
CHECK THE VENT PIPE SECTIONS
FOR DETERIORATION AND CHECK
JOINT FITTINGS FOR THEIR
INTEGRITY. IF IT HAS BECOME DIS-
CONNECTED TOXIC FUMES CAN
ENTER THE HOME AND CAUSE
CARBON MONOXIDE POISONING
OR DEATH. DO NOT OPERATE THIS
FURNACE. APPROPRIATE SERVICE
MUST BE APPLIED.
WARNING
!
