Lennox CBX32M−036, CBX32M−60, CBX32M-030, CBX32M-018, CBX32M-024 Installation Instructions Manual
...
INSTALLATION
E2009 Lennox Industries Inc.
Dallas, Texas, USA
WARNING
Improper installation, adjustment, alteration,
service or maintenance can cause personal injury,
loss of life, or damage to property.
Installation and service must be performed by a
licensed professional installer (or equivalent) or a
service agency.
CAUTION
Physical contact with metal edges and corners
while applying excessive force or rapid motion can
result in personal injury. Be aware of, and use
caution when working near these areas during
installation or while servicing this equipment.
IMPORTANT
The Clean Air Act of 1990 bans the intentional
venting of refrigerant (CFCs, HCFCs and HFCs) as
of July 1, 1992. Approved methods of recovery,
recycling or reclaiming must be followed. Fines
and/or incarceration may be levied for
noncompliance.
INSTRUCTIONS
Elite® Series CBX32M Units
AIR HANDLER
506150−01
05/09
Supersedes 12/08
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
Table of Contents
CBX32M Upflow/Downflow Unit Dimensions 2. . . . . .
CBX32M Horizontal LH/RH Unit Dimensions 3. . . . . .
General Information 3. . . . . . . . . . . . . . . . . . . . . . . . . . .
Shipping and Packing List 3. . . . . . . . . . . . . . . . . . . . . .
Requirements 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Unit 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brazing Connections 7. . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Condensate Drain 8. . . . . . . . . . . . . . . . .
Inspecting and Replacing Filters 9. . . . . . . . . . . . . . . . .
Making Electrical Connections 9. . . . . . . . . . . . . . . . . .
Sealing the Unit 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjusting the Blower Speed 14. . . . . . . . . . . . . . . . . . . .
Repairing or Replacing Cabinet Insulation 18. . . . . . . . .
Litho U.S.A.
IMPORTANT INFORMATION TO INSTALLER
BLOWER MOTOR
SHIPPING BOLT
A
TOP CAP SHIPPING BRACKET (REPLACE
SCREWS IN TOP CAP AFTER REMOVAL)
C
REFRIGERANT LINE PLUGS [SEE
BRAZING CONNECTIONS ON PAGE 7]
CHECK FOR AND REMOVE THE FOLLOWING ITEMS BEFORE OPERATING UNIT.
BLOWER HOUSING SUPPORT PAD
B
BLOWER MOTOR SHIPPING
BRACKET
D
HORIZONTAL DRAIN PAN (SEE UPFLOW
APPLICATIONS ON PAGE 4 AND
DOWNFLOW APPLICATIONS ON PAGE 6)
E
F
05/09 506150−01
*2P0509* *P506150-01*
Page 1
CBX32M Upflow and Downflow Unit Dimensions − Inches (mm)
CBX32M Model Dimensions (for Upflow, Downflow, LH and RH Horizontal Applications)
−018/−024 −030 −036 −042 −048/−060
Dimension
A 45−1/4 1149 49−1/4 1251 51 1295 52−1/2 1333 58-1/2 1486
B 16−1/4 413 21−1/4 540 21-1/4 540 21-1/4 540 21-1/4 540
C 20−5/8 524 20−5/8 524 22-5/8 575 22-5/8 575 24-5/8 625
D 14−3/4 375 19−3/4 502 19-3/4 502 19-3/4 502 19-3/4 502
E 19 483 19 483 21 533 21 533 23 584
F 15 381 20 508 20 508 20 508 20 508
G 24−5/8 625 24−5/8 625 26-3/8 670 27-7/8 708 27-7/8 708
H 20−5/8 524 24−5/8 625 24-5/8 625 24-5/8 625 30-5/8 778
inches mm inches mm inches mm inches mm inches mm
3/4
(19)
SUPPLY
AIR OPENING
D
11-1/16
(281)
LINE VOLTAGE
INLETS (TOP
AND LEFT SIDE)
Top View
3/4
(19)
LOW VOLTAGE
INLETS (TOP AND RIGHT
SIDE)
5/8
(16)
BC
Air Flow
G
OPTIONAL
ELECTRIC
HEAT
(FIELD−
INSTALLED)
A
SUCTION
H
Return Air
5/8
(16)
F
Front View Side View
5/8
(16)
FILTER
ACCESS
LINE
LIQUID
LINE
Upflow Position
(25)
2
2-3/4
(70)
PIPING PLATE DETAIL
1-3/4 (44)
4-3/8 (111)
SUCTION LINE
CONDENSATE
DRAINS (2)
(HORIZONTAL)
LIQUID LINE
CONDENSATE
DRAINS (2)
(UPFLOW AND
DOWNFLOW)
3-1/2 (89)
5/8
(16)
5/8 (16)
Air Opening
E
1 (25)
Top View
F
Return
5/8
(16)
FILTER
ACCESS
(FOR UPFLOW AND DOWNFLOW POSITIONS)
1-1/8 (29)
(51)
5-3/8
(137)
BC
FILTER
SUCTION
Blower
Coil
Return AirFILTER
1
E
5/8
(16)
LINE
LIQUID
LINE
OPTIONAL
ELECTRIC
HEAT (FIELD−
INSTALLED)
LOW VOLTAGE
(RIGHT SIDE)
LINE VOLTAGE
(LEFT SIDE)
11-1/16 (281)
Coil
5/8
(16)
Air Flow
Supply Air
D
Front ViewSide View
Blower
Supply Air
5/8
(16)
(KIT NUMBER 83M57 (LB−909844A) REQUIRED TO CONVERT
Downflow Position
UNIT TO DOWNFLOW APPLICATIONS.)
H
A
G
5/8 (16)
506150−01 05/09
Page 2
CBX32M Horizontal Left− and Right−Hand Unit Dimensions − Inches (mm)
Filter
LIQUID
LINE
FILTER ACCESS
Blower
Coil
SUCTION
LINE
H
Top View
A
Air
Flow
Front View
Blower
OPTIONAL ELECTRIC
HEAT (FIELD−INSTALLED)
G
Coil
C
5/8
(16)
B
INLETS (BOTTOM
PIPING PLATE
DETAIL
FOR DIMENSIONS A" THROUGH
LINE VOLTAGE
INLETS (TOP
AND RIGHT
SIDE)
LOW VOLTAGE
AND RIGHT
SIDE)
4-3/8
(111)
1-1/8
(29)
CONDENSATE
DRAINS (2)
(UPFLOW AND
DOWNFLOW)
CONDENSATE
DRAINS (2)
(HORIZONTAL)
PIPING PLATE
DETAIL
5/8
(16)
5/8
(16)
5/8
(16)
5-3/8
(137)
5-3/4
(46)
F
1-3/4
E
Return
Opening
Air
End View
(44)
(51)
2
(25)
1-1/2
(38)
1
LIQUID
LINE
SUCTION
LINE
1-1/8
(29)
4-3/8
(111)
Horizontal Position (Right-Hand Air Discharge)
C
H", SEE CHART ON PAGE 2.
11-1/16
(281)
Supply
Air
Opening
End View
3/4
(19)
3/4
(19)
D
3/4
(19)
OPTIONAL ELECTRIC
HEAT (FIELD INSTALLED)
5/8 (16)
B
CONDENSATE DRAINS (2)
A
G
Air Flow
(HORIZONTAL)
Front View
3/4
(19)
11-1/16
3/4
(19)
3/4
(19)
(281)
Supply
D
Air Opening
LINE VOLTAGE INLETS
(BOTTOM AND LEFT SIDE)
End View
LOW VOLTAGE
INLETS (TOP
AND LEFT SIDE)
Horizontal Position (Left-Hand Air Discharge)
General
The Lennox Elite® Series CBX32M air handler units are
designed for installation with a matched remote outdoor
unit that is charged with HFC−410A refrigerant and optional
field−installed electric heat. The air handler units are for
indoor installation only.
These instructions are intended as a general guide and do
not supersede local or national codes in any way. Consult
authorities having jurisdiction before installation. Check
equipment for shipping damage; if found, immediately
report damage to the last carrier.
FILTER
Top View
LINE
H
LIQUID
LINE
5-3/4
(146)
FILTER
ACCESS
1-1/2
(38)
SUCTION
LINE
LIQUID
LINE
1
(25)
Return
Air Opening
End View
2
5-3/8
(51)
(137)
5/8
(16)
E
5/8
F
(16)
5/8
(16)
SUCTION
1-3/4
(44)
Shipping and Packing List
Package 1 of 1 contains the following:
1Assembled air handler unit
Requirements
In addition to conforming to manufacturer’s installation
instructions and local municipal building codes, installation
of Lennox air handler units (with or without optional electric
heat), shall conform with the following National Fire
Protection Association (NFPA) standards:
S NFPA No. 90A − Standard for Installation of Air
Conditioning and Ventilation Systems
Page 3
CBX32M SERIES
S NFPA No. 90B − Standard for Installation of Residence
Type Warm Air Heating and Air Conditioning Systems
This unit is approved for installation clearance to
combustible material as stated on the unit rating plate.
Accessibility and service clearances must take
precedence over combustible material clearances.
Installing the Unit
CBX32M units are factory−configured for upflow or
horizontal right−hand discharge installation. For downflow
or horizontal left−hand discharge, some field modification
is required.
WARNING
Electric Shock Hazard.
Can cause injury or death.
Foil-faced insulation has conductive
characteristics similar to metal. Be sure there are no
electrical connections within a ½" of the insulation.
If the foil-faced insulation comes in contact with
electrical voltage, the foil could provide a path for
current to pass through to the outer metal cabinet.
While the current produced may not be enough to
trip existing electrical safety devices (e.g. fuses or
circuit breakers), the current can be enough to
cause an electric shock hazard that could cause
personal injury or death.
To reassemble:
1. Align cabinet sections together.
2. Reinstall screws.
3. Replace blower and coil assemblies.
4. Replace access panel.
UPFLOW APPLICATION
Use the following procedures to configure the unit for
upflow operations:
1. Remove access panels. Remove corrugated padding
from the space between the blower and coil
assemblies.
2. The horizontal drain pan must be removed when the
coil blower is installed in the upflow position. Removing
horizontal drain pain will allow proper airflow and
increase efficiency.
3. Place unit in desired location. Make sure that unit is
level. Connect return and supply air plenums as
required using sheet metal screws as illustrated in
figure 1.
4. Install units which have no return air plenum on a
mounting stand that is at least 14" from the floor for
proper air return. Lennox offers an optional upflow unit
stand as listed in table 1.
WARNING
Improper installation, adjustment, alteration,
service or maintenance can cause property damage,
personal injury or loss of life. Installation and
service must be performed by a qualified installer or
service agency.
IMPORTANT
Kit number 83M57 (LB−109844A) must be installed
for downflow application.
DISASSEMBLE AND REASSEMBLE AIR HANDLER
UNIT
The CBX32M air handler unit consists of two sections
which are shipped assembled from the factory. If
necessary, the unit may be disassembled to facilitate
setting the unit. Follow the steps below:
To disassemble:
1. Remove access panels.
2. Remove both blower and coil assemblies. This will
lighten the cabinet for lifting.
3. Remove one screw from the left and right posts inside
the unit. Remove one screw from each side on the
back of the unit. Unit sections will now separate.
HORIZONTAL DRAIN PAN
(MUST BE REMOVED)
UPFLOW/
DOWNFLOW
DRAIN PAN
Figure 1. Upflow Configuration
Table 1. Optional Unit Side Stand (Upflow Only)
Model Kit Number
−018 and −024 45K31
−036, −042, −048 and −060 45K32
HORIZONTAL DRIP SHIELD
UPFLOW/
DOWNFLOW
DRAIN PAN
HORIZONTAL
DRAIN PAN
NO ADJUSTMENT IS NECESSARY
Figure 2. Right−Hand Discharge Configuration
506150−01 05/09
Page 4
ANGLE IRON OR
SHEET METAL
FRONT VIEW
1/2 IN.
SCREWS
MAX.
ELECTRICAL INLET
CLEARANCE 4 IN. (102 MM)
END VIEW
Figure 3. Suspending Horizontal Unit
CAUTION
When removing the coil, there is possible danger of
equipment damage and personal injury. Be careful
when removing the coil assembly from a unit
installed in right− or left−hand applications. The coil
may tip into the drain pan once it is clear of the
cabinet. Support the coil when removing it.
HORIZONTAL RIGHT−HAND DISCHARGE
APPLICATION
Use the following procedures to configure the unit for
horizontal right−hand discharge operations:
NOTE − For horizontal applications, an secondary drain
pan is recommended. Refer to local codes.
1. Remove access panels. Remove corrugated padding
from the space between the blower and coil assembly.
2. No further adjustment is necessary. Set unit so that it is
sloped 1/4 inch toward the drain pan end of the unit as
illustrate in figure 2 on page 4.
3. If the unit is to be suspended, it must be supported
along the entire length of the cabinet as illustrated in
figure 3. If a strap is used, attach a piece of angle iron
or sheet metal to the unit (either above or below) so
that the full length of the cabinet is supported. Use
securing screws which are no longer than 1/2 inch to
avoid damaging the coil or filter. Connect the return
and supply air plenums as required using sheet metal
screws.
HORIZONTAL LEFT−HAND DISCHARGE
APPLICATION
Use the following procedures to configure the unit for
horizontal left−hand discharge operations:
NOTE − For horizontal applications, an secondary drain
pan is recommended. Refer to local codes.
Remove access panels. Remove corrugated padding from
the space between the blower and coil assembly before
operation.
1. Remove coil assembly from unit and remove the
horizontal drain pan as illustrated in figure 4, detail A
on page 6.
2. Remove drain plugs from back drain holes on
horizontal drain pan and reinstall them on front holes.
IMPORTANT
After removal of drain pan plug(s), check drain
hole(s) to verify that drain opening is fully open and
free of any debris. Also check to make sure that no
debris has fallen into the drain pan during installation that may plug up the drain opening.
3. Rotate the drain pan 180° front to back and install it on
the opposite side of coil.
4. Remove screws from top cap. Remove horizontal drip
shield screw located in the center of the back coil end
seal as illustrated in figure 4, details B and C on page
6.
5. Rotate horizontal drip shield 180° front to back.
6. Remove plastic plug from left hole on coil front end
seal and reinstall plug in back hole. Reinstall horizontal
drip shield screw in front coil end seal. Drip shield
should drain downward into horizontal drain pan inside
coil.
7. Rotate top cap 180° front to back and align with
unused screw holes. Holes must align with front and
back coil end plates. Note that top cap has a 45° bend
on one side and 90° bend on the other. The 90° bend
must be on the same side as the horizontal drain pan
as illustrated in figure 4 on page 6.
NOTE − Be very careful when you reinstall the screws into
coil end plate engaging holes. Misaligned screws may
damage the coil.
8. From the upflow position, flip cabinet 90° to the left and
set into place. Replace blower assembly. Secure coil
in place by bending down tab on cabinet support rail
as illustrated in figure 5 on page 6.
NOTE − For horizontal applications in high humidity
areas, seal around the exiting drain pipe, liquid line and
suction line to prevent infiltration of humid air.
9. Knock out drain seal plate from access door. Secure
plate to cabinet front flange with screw provided.
10. Flip access door and replace it on the unit.
11. Set unit so that it is sloped 1/4 inch toward the drain
pan end of the unit. Connect return and supply air
plenums as required using sheet metal screws.
12. If the unit is to be suspended, it must be supported
along the entire length of the cabinet as illustrated in
figure 3 on page 5. If using a chain or strap, attach a
piece of angle iron or sheet metal to the unit (either
above or below the unit), so that the full length of the
cabinet is supported. Use securing screws which are
no longer than 1/2 inch to avoid damaging the coil or
filter. Use sheet metal screws to connect the return
and supply air plenums.
Page 5
CBX32M SERIES
PLUGGED
END
OPEN END FOR
CONDENSATION
DRAIN
COIL
ASSEMBLY
COIL SHOWN IN UPFLOW
POSITION FOR EASY
CONVERSION
DETAIL A
(DRAIN PAN)
TOP CAP
90_
BEND
DRAIN PAN
ORIGINAL
PLUG
LOCATION
NEW PLUG
LOCATION
TOP CAP ROTATED TO
CORRECT POSITION
CABINET
SUPPORT
ALIGN HOLES WITH
HOLES IN COIL END
PLATE.
BACK COIL END SEAL
Figure 4. Left-Hand Discharge Modifications
BEND
DETAIL C
90_
TOP CAP
SCREWS
DETAIL B
(TOP CAP)
SECURING TAB ON
CABINET SUPPORT RAIL
HORIZONTAL DRIP SHIELD
HORIZONTAL
DRAIN PAN
Figure 5. Left−Hand Discharge Configuration
DOWNFLOW APPLICATION
Use the following procedures to configure the unit for
downflow operations:
WARNING
If electric heat section with circuit breakers (ECB29)
are applied to downflow CBX32M unit, circuit
breakers must be rotated 180_ to the UP position.
See ECB29 installation instructions for more
details.
NOTE − If downflow application is required, separately
order kit number 83M57 and install per kit’s instructions.
Also, use metal or class I supply and return air plenums.
On combustible flooring, use an additive base as
illustrated in figure 6. and use the following procedures:
AIR HANDLER
UNIT
COMBUSTIBLE FLOOR
PROPERLY−SIZED
FLOOR OPENING
ADDITIVE BASE
Figure 6. Combustible Flooring Additive Base
1. Cut an appropriately sized opening for combustible
base as illustrated figure 7.
2. Set the additive base into opening.
3. Connect supply air plenum to the additive base.
4. Set the unit on the additive base so flanges of the unit
drop into the base opening and seal against the
insulation strips. The unit is now locked in place.
5. Install return air plenum and secure with sheet metal
screws.
506150−01 05/09
Page 6
Loading...