Lennox Elite CBX32M-024, Elite CBX32M-030, Elite CBX32M-018, Elite CBX32M-036, Elite CBX32M-042 Installation Instructions Manual

INSTALLATION

,B,2008 Lennox industries Inc,

Dallas, Texas, USA

X_ WARNING

_ CAUTION

IMPORTANT

INSTRUCTIONS

Elite® Series CBX32M Units

MULTI-POSITION AIR HANDLER
505,342M

05108
Supersedes 04/08

CBX32M Up-flow/Down-flow Unit Dimensions .... 2

CBX32M Horizontal LH/RH Unit Dimensions ...... 3

General Information ........................... 4

Shipping and Packing List ...................... 4

Requirements ................................. 4

Installing the Unit .............................. 4

Brazing Connections ........................... 4

Installing the Condensate Drain ................. 8

_puTeCh ical

n

blications

Litho U.S.A.

_, IMPORTANT

RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE

BLOWER MOTOR

SHIPPING BOLT

TOP CAP SHIPPING BRACKET (REPLACE

SCREWS IN TOP CAP AFTER REMOVAL)

C

Making Electrical Connections .................. 9

Sealing the Unit ............................... 12

Inspecting and Replacing Filters ................. 9

Adjusting the Blower Speed .................... 12

Repairing or Replacing Cabinet Insulation ......... 14

CHECK FOR AND REMOVE THE FOLLOWING ITEMS BEFORE OPERATING UNIT.

BLOWER HOUSING SUPPORT PAD

B

BLOWER MOTOR SHIPPING

BRACKET

D

HORIZONTAL DRAIN PAN (SEE UP-FLOW

APPLICATIONS ON PAGE 4 AND

DOWN-FLOWAPPLICATIONS ON PAGE 6)

iiiiiiiiiiiii_i':i-_

REFRIGERANT LINE PLUGS [SEE

BRAZING CONNECTIONS ON PAGE 7]

F

05/08

IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII

Page 1

E

505,342M

IIIIIIIIIIIIIIIIIIIIIIHIIIIIIIIIIIIIIIIIIIIIIII

CBX32M Model Dimensions (for Up-flow, Down-flow, LH and RH Horizontal Applications)

-018/-024 -030 -036 -042 -048/-060

Dimension inches mm inches mm inches mm inches mm inches mm

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

3/4

(19)

SUPPLY

AIR OPENING _

(FOR UP-FLOW AND DOWN-FLOW POSITIONS)

ilU i iiiii!i¸! ! i!i ii i i i i i iii i ii iiiiiiii ii!iiii i !i!i ! ! !!i! i i iiiiiiiii iiiiiiiiiiiii 4_8/8(111,

iiiiiiiii_i_iiiiiiiii_ii_i!_iiiii_!i_!ii_!_!!i!i!!!_!!_i!iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii_!_i_I_i!_ii!i_i_i_!_i!i_i!_!iiii_!_!i_i_!_i_i!_i_i_ii_ii_!_!_i_i_ii_i_i_i_i_!_!i_!i_!i_i_i!!i!i_i_i!_i_ii_i_!_ii_ii_i!i_!iii_i__SUCT'°NL'NE

- 3/4
(19)

LINE VOLTAGE
INLETS (TOP
AND LEFT SIDE)

Top View 5/8

RETURN AIR RETURN AIR |

L oc ss

5/8 5/8 1 5/8

(15) Front View (15) (25) Side View (15)

F E "'"-_

LOW VOLTAG E
INLETS (TOP AND RIGHT

SIDE)

(15)

OPTIONAL

ELECTRIC

(FIELD-

INSTALLED)

HEAT

Up-flow Position

i ililil .CONDENSATEiii !i DRA,NS(2,

PIPING PLATE DETAIL

1-3/4 (44)

SUCTION

LINE

LINE

OPTIONAL

ELECTRIC

INSTALLED)

LOW VOLTAGE

(RIGHT SIDE)

LINE VOLTAGE

(LEFT SIDE)

/

5/8(15)

(HORIZONTAL)

DRAINS (2)
(UPFLOW AND

DOWNFLOW_

1 (25)

\

11-1/16

Side View (15) (15) Front View

_KIT NUMBER 83M57 (LB-909844A) REQUIRED TO CONVERT

5/8 5/8

Down-flow Position

UNIT TO DOWN-FLOW APPLICATIONS.)

t

FILTER

Top View ACCESS

A i,

H

A

V

505342M 05/08

Page 2

CONDENSATE

DRAINS (2)

(UPFLOW AND "_

DOWNFLOW)

CONDENSATE

DRAINS (2)

(HORIZONTAL)

PIPING PLATE

DETAIL

5-3/8 2 FILTER

5-3/4 -3/ 1-1/2

44 (38)

5/8

(16)I

(16) (25)

(5/8)j End View

Horizontal Position (Right-Hand Air Discharge)

C

LIQU{D _SUCTION OPTIONAL ELECTRIC

LINE LINE HEAT (FIELDqNSTALLED)

FOR DIMENSIONS "A" THROUGH

"H", SEE CHART ON PAGE 2.

Top View

(_68) 3/4

S,DE,

'N SlTOT 1,19

B D

LOWVOLTAGE:

INLETSBOTTOM_._1

AND RIGHT I_

FILTERACCESS Front View End View

PIPING PLATE t

DETAIL 1-1/8

SIDE) --(19)

4-3/8 t

(111)

(29) _-

3/4 AND LEFT SIDE)

(19) 11H 16

o,

lll°°°

(19)-

LINE VOLTAGE INLETS

(BOTTOM AND LEFT SIDE)

End View

LOW VOLTAGE

INLETS (TOP

OPTIONAL ELECTRIC FILTER SUCTION LIQUID
HEAT (FIELD INSTALLED) LINE LINE

B

CONDENSATE DRAINS (2)

(HORIZONTAL) (44)-

Top View

Front View

.FILTER

ACCESS

lq/2

(38)

Horizontal Position (Left-Hand Air Discharge)

SUCTION i

LIQUID

LINE

1

(25)

End View

5/8

5/8

(16)

5/8

(18)

Page 3

CBX32M SERIES

,&,WARNING

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.

Package 1 of 1 contains the following:

1--Assembled air handler unit

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:

• NFPA No. 90A - Standard for Installation of Air
Conditioning and Ventilation Systems

• NFPA No. 90B - Standard for Installation d 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.

CBX32M units are factory-configured for up-flow or
horizontal right-hand discharge installation. For down-flow

or horizontal left-hand discharge, some field modification
is required.

WARNING

IMPORTANT

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:

Step 1_ Remove access panels.
Step 2.. Remove both blower and coil assemblies. This

will lighten the cabinet for lifting,

Step 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,

To reassemble:
Step 1.. Align cabinet sections together,

Step 2,, Reinstall screws,
Step 3.. Replace blower and coil assemblies.
Step 4,, Replace access panel.

UP-FLOW APPLICATION

Use the following procedures to configure the unit for

up-flow operations:
Step 1.. Remove access panels. Remove corrugated

padding from the space between the blower and
coil assemblies.

Step 2.. The horizontal drain pan must be removed when

the coil blower is installed in the up-flow position,

Removing horizontal drain pain will allow proper

airflow and increase efficiency.

Step 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,

Step 4.. Install units which have no return air plenum on

a mounting stand that is at least 14" from the

505342M 05/08

Page 4

floorfor properair return.Lennoxoffersan Step2_

optionalup-flowunitstandaslistedintable1.

HORIZONTAL DRAIN PAN

r q I(MUST BE REMOVED)

I;
II

UP-FLOW/ II

DRAIN PAN

DOWN-FLOW _J

Table 1. Optional Unit Side Stand (Up-Flow Only)

Model Kit Number

-21,-26, and -31 45K31

-41 through -65. 45K32

i
i

Figure 1. Upflow Configuration

Step 3..

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 5.

If the unit is to be suspended, it must be
supported along the entire length of the cabinet
as illustrated in figure 3. Ifa 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.

CAUTION

HORIZONTAL DRIP SHIELD

V

HORIZONTAL I I I I

DRAIN PAN "_I__

DRA,NPAN

NO ADJUSTMENT IS NECESSARY

Figure 2. Right-Hand Discharge Configuration

ANGLE IRON OR

SHEET METAL

SCREWS

MAX.

1/2 IN. q

FRONT VIEW END VIEW

Figure 3. Suspending Horizontal Unit

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,

Step 1.. Remove access panels. Remove corrugated

padding from the space between the blower and
coil assembly.

ELECTRICAL INLET

CLEARANCE 4 IN. (102 MM)

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.
Step 1.. Remove coil assembly from unit and remove the

horizontal drain pan as illustrated in figure 4,
detail A on page 6.

Step 2.. Remove drain plugs from back drain holes on

horizontal drain pan and reinstall them on front
holes.

A IMPORTANT

Step 3..

Step 4..

Step 5..

Rotate the drain pan 180° front to back and
install it on the opposite side of coil,

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.

Rotate horizontal drip shield 180° front to back.

Page 5

CBX32M SERIES