National Comfort Product CPG41238-U Series Installation manual - Danger
Installation Guide for Comfort Pack (CPG) Units
22
should be taken to prevent possible vent system ice blockage
that could result in safety shutdown of the burners:
1. Adjust to the highest achievable temperature rise within the
rise and static pressure ranges specified on the rating plate.
2. Make sure there are no leaks of outside air into the return air
system.
3. Keep the outside louver grill as free as possible of any ice that
may form and obstruct the flue outlet.
THE GAS BURNER IN THIS GAS-
FIRED EQUIPMENT IS DESIGNED AND
EQUIPPED TO PROVIDE SAFE AND
COMPLETE COMBUSTION. HOWEVER,
IF THE INSTALLATION DOES NOT
PERMIT THE BURNER TO RECEIVE THE
PROPER SUPPLY OF COMBUSTION AIR,
COMPLETE COMBUSTION MAY NOT
OCCUR. THE RESULT IS INCOMPLETE
COMBUSTION THAT PRODUCES CARBON
MONOXIDE, A POISONOUS GAS THAT
CAN CAUSE DEATH. SAFE OPERATION
OF DIRECT-FIRED GAS BURNING
EQUIPMENT REQUIRES A PROPERLY
OPERATING VENT SYSTEM THAT VENTS
ALL FLUE PRODUCTS TO THE OUTSIDE
ATMOSPHERE. FAILURE TO PROVIDE
VENTING WILL RESULT IN A HEALTH
HAZARD WHICH COULD CAUSE SERIOUS
PERSONAL INJURY OR DEATH. ALWAYS
COMPLY WITH THE COMBUSTION AIR
REQUIREMENTS IN THE INSTALLATION
CODES. COMBUSTION AIR AT THE
BURNER SHOULD BE REGULATED
ONLY BY MANUFACTURER-PROVIDED
EQUIPMENT. NEVER RESTRICT OR
OTHERWISE ALTER THE SUPPLY OF
COMBUSTION AIR TO ANY HEATER.
!
DANGER
Figure 4: Gas Control
Maintenance and Service
The 16” x 25” x 1” filter on the cooling chassis must be maintained
regularly to assure that the unit provides optimal performance
and energy efficiency. The intervals between replacing depends
entirely on the cleanliness of the return air to the unit and the time
that the indoor blower operates. The air filter is accessible by
removing the lower access panel. The filter should be inspected
and replaced as needed and is not washable. Substituting the air
filter with media other than the type provided with the unit is not
recommended, since other materials may cause additional static
pressure, which could reduce the air delivery of the unit. The
unit should never be operated without the air filter and access
panels in place.
Cooling Chassis
The cooling chassis contains all items related to the cooling
functions of the unit, and also contains the indoor blower and
motor for the heating function. For extensive servicing, qualified
personnel may choose to remove the cooling chassis from the