Filter
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Installation
26 CAH-SVX01A-EN
Air Filters
Front Load Filters
Most filters in custom units are
installed in unitary sheet metal
frames. Filters are secured with a
metal clip. There are several
different styles.
To install filters:
1 Disconnect power to the unit.
2 Open or remove the filter clip.
3 Remove the filter from the rack.
4 Install new filters with the
directional arrows pointing in the
direction of airflow.
5 Secure the filter using the
appropriate clip for each filter.
Review Figure 21 through Figure 24
for an explanation of the methods
for securing the different types of
filters.
The filters are often installed in a
pre/post filter configuration. Be sure
to note the order of installation.
Note: Filters must have an airtight
seal to prevent air bypass.
ƽ WARNING
Hazardous Voltage with
Capacitors!
Disconnect all electric power,
including remote disconnects and
discharge all motor start/run
capacitors before servicing. Follow
proper lockout/tagout procedures to
ensure the power cannot be
inadvertently energized. For variable
frequency drives or other energy
storing components provided by
Trane or others, refer to the
appropriate manufacturer’s
literature for allowable waiting
periods for discharge of capacitors.
Verify with an appropriate voltmeter
that all capacitors have discharged.
Failure to disconnect power and
discharge capacitors before
servicing could result in death or
serious injury.
Figure 21. C-70 fastener holds 2-inch
filter
Figure 22. C-86 fastener (shown) or C-
77 fastener holds 4-inch pleated filters
Figure 23. Bag filter show with C-70
fastener
Figure 24. C-80 spring fastener
secures cartridge
Side Load Filters
Most filters in custom units are
installed in unitary sheet metal
frames. If unit is provided with side
access rack, do the following for
installation:
2-inch or 4-inch flat filters.
1 Disconnect the power to the unit.
2 Open the filter section access
door and remove the filters and
block-offs from their installed
position.
3 Slide the filter into the rack.
4 Some side load racks will be
provided with block-off plates.
Install them into the rack last
before closing the door.
5 Close and secure the door,
making certain the door closes
snug against the block-off (see
Figure 25).