13
Section
10
. Air Filter (not factory-installed)
* External filter or other means of filtration is required. Units should be sized for a maximum of 300 feet/min. air velocity or what is
recommended for the type filter installed.
Filter application and placement are critical to airflow, which may affect the heating and cooling system performance. Reduced airflow
can shorten the life of the system’s major components, such as motor, limits, elements, heat relays, evaporator coil or compressor.
Consequently, we recommend that the return air duct system have only one filter location. For systems with a return air filter grill or
multiple filter grills, can have a filter installed at each of the return air openings.
If adding high efficiency filters or electronic air filtration systems, it is very important that the air flow is not reduced. If air flow is
reduced the overall performance and efficiency of the unit will be reduced. It is strongly recommended that a profesional installation
technician is contacted to ensure installation of these such filtration systems are installed correctly.
IMPORTANT: DO NOT DOUBLE FILTER THE RETURN AIR DUCT SYSTEM. DO NOT FILTER THE SUPPLY AIR DUCT
SYSTEM.THIS WILL CHANGE THE PER-FORMANCE OF THE UNIT AND REDUCE AIRFLOW .
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WARNING
Do not operate the system without filters. A portion of the dust entrained in the air may temporarily lodge In the duct runs and at the
supply registers. Any circulated dust particles could be heated and charred by contact with the air handler elements. This residue could
soil ceilings, walls, drapes, carpets and other articles in the house.
Soot damage may occur with filters in place, when certain types of candles, oil lamps or standing pilots are burned.
Section
10
.1 Filter installation Dimensions
AIR FILTER
COVER FOR
AIR FILTER
Fig. 4 EXTERNAL FILTER BASE
Dimensional Data
Air Filter Removal
1. Tear down the two bolts signed A and B, take
down the cover for air filter, see in Figure 4.
2. Hold the edge of the air filter and extract out .
3. Clean the air filter (Vacuum cleaner or pure
water may be used to clean the air filter. If the
dust accumulation is too heavy, use soft brush
and mild detergent to clean it and dry out in cool
place) .
