17
920-164-02 (10-04)
Performing Routine Maintenance
Filter Rails
Air Filter
Figure 12
Filter Replacement
Removing Filter From
Front Filter Rack:
Slide it to the right side
of the unit as shown.
Inspect Outdoor-air Intake and Exhaust
The unit’s outdoor-air intake and outdoor-air exhaust paths
must remain clear. Check the OA exhaust frequently. Keep
it free of all debris, snow, or ice. The OA intake should also
be kept free of obstructions. Blocking the OA exhaust or OA
intake opening will reduce the effi ciency of your unit, could
damage it, and void your warranty.
Inspect and Clean Condensate Drain
The condensate drain must be routed to a suitable drainage
area. Check the unit condensate drain periodically. Keep it free
of anything that may block or impede the fl ow of condensate
water. If there is any accumulation of foreign matter in the drain
pipe, it should be removed and cleaned. The entire drain line
must be protected from freezing.
NOTE: Non-Heat Pump models use a single stage heat
thermostat. When a demand for heat is made, these
units will use the electric heat strip heat immediately.
With the proper maintenance and care, your system will
operate economically and dependably. Maintenance can be
accomplished easily by referring to the following directions.
However, before performing any maintenance, consider these
important safety precautions:
WARNING:
Electrical Shock Hazard. Before attempting
any service work or routine maintenance, turn off all electrical
connections to the unit. Failure to do so may result in property
damage, personal injury and/or death.
CAUTION:
Although great care has been taken to minimize
sharp edges in the construction of your unit, be extremely
careful when handling parts or reaching into the unit.
Replace Air Filter
A dirty air fi lter reduces the effi ciency of your Vert-I-Pak and
allows lint and dirt to accumulate on the indoor-air coil. Lint and
dirt on the indoor-air coil can damage your unit and void the
warranty. The air fi lter should be replaced as it becomes dirty.
To replace the fi lter (front air return units):
1. Slide the fi lter to the right until it clears the fi lter rails
(See Figure 12).
2.
Remove
the
fi
lter.
3. Install new disposable fi lter.
CAUTION:
Do not operate your system without a fi lter
in place, nor block the front of the unit return air opening.
Inspect and Clean Indoor-air Coil
Eventually, minor amounts of lint and dirt may pass through
the fi lter and collect on the indoor-air coil. These minor
accumulations can be carefully vacuumed away with a brush
attachment on a vacuum cleaner. Care must be taken to
avoid bending the aluminum fi ns on the coil. Bent fi ns should
be straightened using a special fi n tool available from most
HVAC service technicians.
Heating Cycle
With the SYSTEM control of your indoor thermostat set to
HEAT, the heating section of your home comfort system will
operate until room temperature is raised to the level you have
selected. Of course, the heating unit will have to operate for
longer periods to maintain a comfortable environment on cooler
days and nights than on moderate ones. When the demand is
greater than the capacity of the heat pump alone, the auxiliary
electric heaters will supplement the heat pump.
Defrost Cycle
When your heat pump is providing heat to your home and the
outdoor temperature drops below 45°F, moisture may begin
to freeze on the surface of the outdoor-air coil. If allowed to
build up, this ice would impede airfl ow across the coil and
reduce the amount of heat absorbed from outside air. To
maintain energy-effi cient operation, your heat pump has an
automatic defrost cycle.
The defrost cycle will occur only if ice is suffi cient to interfere
with normal heating operation. After ice is melted from the
outdoor-air coil, the unit automatically switches back to normal
heating mode.
Do not be alarmed if steam or fog appears at the outdoor-air
exhaust during the defrost cycle. Water vapor from the melting
ice may condense into a mist in the cold outdoor air.
Summary of Contents for VERT-I-PAK B-SERIES
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