Maintenance - National Comfort Products CPE Series Installation Manual

Installation Manual for Comfort Pack Electric Units
High Voltage Diagrams
*FUSES NOT INSTALLED ON CPE4XX00-U MODELS
3, 5, 7, 10KW Fuse Box
15KW Fuse Box
UNIT
GROUND
12
UNIT
GROUND
Fuse Sizes
3KW = 30 Amp
5KW = 30 Amp
7KW = 50 Amp
10KW = 60 Amp
Fuse Sizes
30 Amp
Fuse Sizes
60 Amp
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
unit and take it to a work area. Spare chassis are recommended
so that extensive servicing can be performed outside the living
space. This will prevent introducing dirt or doing damage in the
living area, and could help to eliminate significant disruption of
the air conditioning and heating functions in the living areas.
The indoor blower motor and the outdoor fan motor have
permanently lubricated bearings and do not require routine
service. The refrigeration system is sealed and factory charged
with R-410A so that routine maintenance is not required. The
electrical controls do not require routine service. Cleaning of the
outdoor coil, indoor coil, drain pan, and inside the bottom of the
chassis are recommended at least once a year, and more often
if the equipment is operated in a dusty or hostile environment.
The outdoor coil is an aluminum microchannel condensing coil
with an anti-corrosion coating that requires specific precaution
when cleaning. It is recommended to rinse the coil using a low
pressure hose (less than 70 psi) to prevent buildup of dirt and
debris. Rinse from the outside of the coil in, making sure to
protect the condenser motor from water damage during the
cleaning process. Leaves, twigs, and other large debris should
be removed with a soft, non-metallic bristle brush prior to
rinsing of the coil to prevent debris from being forced between
the fins. Care should be taken not to use the brush horizontally
across the fins as they are easily damaged.
DO NOT USE CHEMICALS, HOUSEHOLD BLEACH, OR ACID
CLEANERS AS THEY WILL ACCELERATE CORROSION ON THE
COIL. AVOID USING PRESSURE WASHERS, HIGH PRESSURE
HOSES, OR HIGHLY COMPRESSED AIR TO CLEAN THE COIL.
DOING SO CAN PERMANENTLY DAMAGE THE COIL, REDUCE
UNIT PERFORMANCE, AND VOID THE WARRANTY.
Power to the unit should always be turned off before performing
service or removing the cooling chassis from the unit. One
power connector and one control circuit connector are provided
for easy disconnecting and re-connecting of the wires between
the cooling chassis and cabinet. The controls enclosure cover
must be removed to allow access to the screws holding the
indoor blower cover plate to the cooling chassis and cabinet.
After reinstalling the cooling chassis, the indoor blower cover
plate and controls enclosure cover must be reinstalled.