Lennox Elite CBX32M-024 Installation Instructions Manual page 9

A IMPORTANT
WARNING
Each unit includes a factory-installed filter. Note that filter
access door fits over access panel. Air leakage will occur if
access panel is placed over filter door.
Filters should be inspected monthly and must be cleaned
or replaced when dirty to assure proper furnace operation.
Reusable filters supplied with some units can be washed
with water and mild detergent. Some units are equipped
with standard throw-away type filters which should be
replaced when dirty.
To replace filter:
Step 1.. Loosen the thumbscrews holding the filter panel
in place.
Step 2.. Slide the filter out of the guides on either side of
cabinet.
Step 3.. Insert new filter.
Step 4.. Replace panel.
See table 3 for replacement filter sizes.
Table 3. Filter Dimension
Unit Model No. Filter Size Inches (mm)
CBX32M018/024 15 x 20 (381 x 508)
CBX32M-030 20 x 20 (508 x 508)
CBX32M-036,042 20 x 22 (508 x 559)
CBX32M-048,060 20 x 24 (508 x 610)
L2 LI
1 L
CIRCUIT 1
,ll
Wiring must conform to the current National Electric Code
ANSI/NFPA No. 70, or Canadian Electric Code Part I, CSA
Standard C22.1, and local building codes. Refer to
following wiring diagrams. See unit nameplate for
minimum circuit ampacity and maximum overcurrent
protection size.
HEAT ELEMENT _I
CIRCUIT BREAK-
ERS OR TERMI-
NAL BLOCK
Select the proper supply circuit conductors in
accordance with tables 310-16 and 310-17 in the
National Electric Code, ANSI/NFPA No. 70 or tables 1
through 4 in the Canadian Electric Code, Part l, CSA
Standard C22.1.
This unit is provided with knockouts for conduit. Refer to
figure 15 for unit schematic wiring diagram. Refer to
figures 14 through 13 for typical field wiring.
Separate openings have been provided for 24V low
voltage and line voltage. Refer to the dimension illustration
for specific location.
K3 INDOOR
BLOWER RELAY
TRANSFORMER
K32
CB1
HEAT_RELAY ,I CIRCUIT _}
BREAKER
OR
GROUND FUSE
±
,/_ THERMOSTAT TB, L._ (D_ __
TERMINALI 0
. I j I I
rj
I
L_
I " I
L-- __1
I r -J
/kvv
NOTE - USE COPPER CONDUCTORS ONLY.
REFER TO UNIT RATING PLATE FOR MINIMUM
CIRCUIT AMPAClTY AND MAXIMUM OVERCUR-
RENT PROTECTION SIZE
LINE VOLTAGE FIELD INSTALLED
CLASS 2 VOLTAGE FIELD INSTALLED
NEC/CEC
NOTE - ALL REMAINING WIRES ARE FACTORY
INSTALLED
z_TO EXTERNAL LOAD 24VAC AT .50 AMP MAXI-
MUM.
Z_ THERMOSTAT HEAT ANTICIPATION SETTING 0.4
AMP ELECTRIC HEAT
Z_ WHEN TWO-STAGE THERMOSTAT IS USED,
CONNECT SECOND STAGE HEAT BULB TO TER-
MINAL "W2" AND REMOVE JUMPER BETWEEN
TERMINALS "R" AND 'W2."
/2X FACTORY INSTALLED JUMPERS
Z_ L3 CONNECTION USED ON (Y-VOLTAGE)
3-PHASE ELECTRIC HEATERS ONLY,
Figure 11. Typical Field Wiring - Cooling Application with Electric Heat
Page 9
CBX32M SERIES