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FIG.
ELECTRONIC
AIR
CLEANER
OUNTER-
FLOW
FURNACE
CAUTION
. Installer
must
be
a
trained,
serviceman.
. Disconnect
power
supply
before
beginning
experienced
installation to prevent possible electrical shock
or equipment damage.
. Conduct a thorough checkout after installation
is complete.
SHEETMETAL
The return duct opening should be framed to provide
adequate support for the air cleaner. End the duct at,
or slightly behind, the finished wall surface. Do not
use a standard register flange. The front of the grille
may not fit tightly against the wall when a flange is
used.
Size the duct opening to fit the air cleaner as closely
as possible. The actual size of the air cleaner is:
Е52С-25-15/16
x 12-7/8
inches
[659 x 327
millimetres |.
F52D-29-1/16
x
22
millimetres].
Allow a clear area of approximately 18 inches [457
millimetres],
from
the finished wall surface into the
duct, for proper operation of the sail switch.
WALL OPENING
The F52C is designed to fit between 16 in. [406.5 mm]
centered studs. The F54D fits between 24 in. [609.5 mm]
centered studs.
When the wall opening is larger than the F52, blank
off the unused portion with structurally sound wood or
metal
framing.
Cover
with
wallboard,
plywood,
or
other material and finish to match the wall.
inches [738.2 x 559
Page
6
TRANSITIONS
Where the existing duct does not match the size of
the F52, use gradual transitions in duct size to ensure
even airflow through the electronic cells. Use no more
than a 20 degree expansion per duct side (4 inches per
lineal foot [100 millimetres per 300 lineal millimetres] ).
TURNING VANES
If it is necessary to install the air cleaner very close
to an abrupt bend in the duct, use turning vanes inside
the duct.
This will help to evenly distribute airflow
across the face of the electronic cells.
UNPACKING
Before removing the air cleaner from the packing box,
push in the 2 door latches and turn to open the grille.
Remove
the electronic
cells and door assembly.
Put
them in a safe place until the installation is completed.
The following items are packed in the F52 carton:
0 Е52С or D electronic air cleaner, including—
D) Door assembly.
D Metal mesh prefilter.
О Electronic cell (2 in F52D).
П Sail switch.
O Small parts envelope (in wiring compartment).
OL Bracket for mounting sail switch (in wiring
compartment).
O Literature package.
MOUNT
SAIL SWITCH
Before installing the F52 electronic air cleaner, the
sail switch should be mounted on the back.
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