Carrier 31KAX - Manual (Page 5)

Fig. 7—Installing Baffles if Needed
for Opposite Airflow
from cleaner casing by pulling it towards you. This motion
disengages power supply connector.
3. Slide out prefilters and air cleaner cells.
4. For Model 016 electronic air cleaner furnace side applica­
tion, cut open return knockout at the side of the furnace
cabinet. For Models 012 and 020, cut opening as shown in
Fig. 5 opening detail.
5. In order to prevent air leakage, use foam tape provided to
attach air cleaner to side of furnace or system blower.
NOTE: The unit is shipped for furnace right side application.
For left side application, rotate rear mounting flange 180 ° by re­
moving (4) screws in the back of the air cleaner. Be sure all four
screws are in place after the rotation. Relocate the junction box
on the furnace to the right side, if required.
6. Hook back flange into the opening. Use air cleaner cabinet
front support flange adjacent to the unit as template and
drill two holes on furnace casing. See Fig. 6.
7. Secure the unit with (2) screws using screws provided into
drilled holes. See Fig. 6.
8. Prepare return-air duct for installation to unit. Return air
must use full cabinet opening. Duct should run straight
into unit.
A CAUTION
If flanged sheet metal ducts are metal-screwed to the unit
casing, do not use screws longer than 1/2-in.
Fig. 9—Line-to-Line Wiring Diagram
A CAUTION
Airflow across air cleaner must be uniform for best results.
Install turning vanes if air cleaner is installed close to an
elbow. Depending on size of furnace, it may or may not be
necessary to reduce ductwork on leaving-air side of air
cleaner. For any application, maintain a 3-to-l duct reduc­
tion ratio (3-ins. of duct length for every 1-in. of reduction
in size).
BLK
WIRE CONN.
-Hg-------
WHITE <
ON 208/240 UNITS ONLY
I FIELD WIRING
------------ FIELD WIRED GROUND
WHITE
TRANSFORMER ASSY.
FOR FIELD CONN. WHT
BLK
INTERLOCK
(DO NOT BYPASS)
3
POWER
SWITCH
UNIT
OPERATION LIGHT
A89116
Fig. 10—Wire Routing