LENNOX Air Handler (indoor Blower&evap) Manual L0805354
User Manual: LENNOX LENNOX Air Handler (indoor blower&evap) Manual LENNOX Air Handler (indoor blower&evap) Owner's Manual, LENNOX Air Handler (indoor blower&evap) installation guides
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INSTALLATION
INSTRUCTIONS
,B,2008 Lennox industries Inc,
Dallas, Texas, USA
Elite® Series CBX32M Units
X_ WARNING
MULTI-POSITION
505,342M
05108
Supersedes 04/08
n
ical
blications
Litho U.S.A.
AIR HANDLER
_puTeCh
_ CAUTION
CBX32M Up-flow/Down-flow
Unit Dimensions
CBX32M Horizontal LH/RH Unit Dimensions
General Information
IMPORTANT
......
...........................
4
Requirements
4
.................................
Installing the Unit ..............................
4
Brazing Connections ...........................
4
Installing the Condensate Drain
8
.................
..................
Sealing the Unit ...............................
Adjusting the Blower Speed
CHECK
INSTRUCTIONS
FOR AND REMOVE
FOR FUTURE
THE FOLLOWING
ITEMS BEFORE
9
12
....................
Repairing or Replacing Cabinet Insulation .........
THESE
3
4
Inspecting and Replacing Filters .................
RETAIN
2
Shipping and Packing List ......................
Making Electrical Connections
_, IMPORTANT
....
9
12
14
REFERENCE
OPERATING
UNIT.
BLOWER MOTOR
SHIPPING BOLT
BLOWER
HOUSING
SUPPORT
PAD
B
TOP CAP SHIPPING BRACKET (REPLACE
SCREWS IN TOP CAP AFTER REMOVAL)
BLOWER
C
MOTOR SHIPPING
BRACKET
D
HORIZONTAL
DRAIN PAN (SEE UP-FLOW
APPLICATIONS
ON PAGE 4 AND
DOWN-FLOWAPPLICATIONS
ON PAGE 6)
iiiiiiiiiiiii_i':i-_
E
REFRIGERANT
LINE PLUGS [SEE
BRAZING CONNECTIONS
ON PAGE 7]
F
05/08
Page 1
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
505,342M
IIIIIIIIIIIIIIIIIIIIIIHII
CBX32M
Model Dimensions
(for Up-flow,
-018/-024
Down-flow,
-030
LH and RH Horizontal
-036
Applications)
-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)
PIPING PLATE DETAIL
(FOR UP-FLOW AND DOWN-FLOW
POSITIONS)
SUPPLY
AIR OPENING
ilU
¸! i !iiiii!i
i!i ii i i 4_8/8
i i(111,
i iii i ii iiiiiiii ii!iiii i !i!i ! ! !!i! i
5/8(15)
_
t
iiiiiiiii_i_iiiiiiiii_ii_i!_iiiii_!i_!ii_!_!!i!i!!!_!!_i!iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
__SUCT'°NL'NE
ii ililil
!i
- 3/4
(19)
.CONDENSATE
DRA,NS
(2,
(HORIZONTAL)
DRAINS (2)
(UPFLOW AND
DOWNFLOW_
LOW VOLTAG E
LINE VOLTAGE
INLETS (TOP
AND LEFT SIDE)
INLETS (TOP AND RIGHT
SIDE)
Top View
1 (25)
1-3/4 (44)
5/8
(15)
FILTER
Top View
ACCESS
A i,
H
SUCTION
LINE
OPTIONAL
ELECTRIC
HEAT
\
(FIELDINSTALLED)
LINE
A
OPTIONAL
ELECTRIC
INSTALLED)
LOW VOLTAGE
(RIGHT SIDE)
LINE VOLTAGE
V
(LEFT SIDE)
RETURN
F
L oc ss
AIR
5/8
(15)
/
5/8
Front View
AIR
|
E "'"-_
1
(15)
Up-flow
RETURN
(25) Side View
11-1/16
5/8
(15)
Side View
5/8
5/8
(15)
(15) Front View
Down-flow
Position
Position
_KIT NUMBER 83M57 (LB-909844A)
REQUIRED
TO CONVERT
UNIT TO DOWN-FLOW
APPLICATIONS.)
Page 2
505342M
05/08
5-3/8
2
FILTER
CONDENSATE
C
DRAINS (2)
(UPFLOW AND "_
DOWNFLOW)
CONDENSATE
DRAINS (2)
(HORIZONTAL)
LIQU{D
_SUCTION
LINE
OPTIONAL
LINE
FOR DIMENSIONS "A" THROUGH
"H", SEE CHART ON PAGE 2.
ELECTRIC
HEAT (FIELDqNSTALLED)
Top View
PIPING PLATE
DETAIL
5-3/4
-3/
1-1/2
44
(38)
5/8
(16)I
(_68)
3/4
S,DE,
(16)
(25)
'N SlTOT
B
1,19
D
LOWVOLTAGE
:
INLETSBOTTOM_._1
AND
(5/8)j
End View
FILTERACCESS
Horizontal
Position
RIGHT
SIDE)
I_
--(19)
Front View
End View
(Right-Hand
Air Discharge)
4-3/8
(111)
t
PIPING PLATE
t
DETAIL
1-1/8
(29)
OPTIONAL
LOW VOLTAGE
3/4
(19)
ELECTRIC
HEAT (FIELD
INSTALLED)
INLETS (TOP
AND LEFT SIDE)
FILTER
SUCTION
LINE
Top View
LIQUID
_-
SUCTION
i
LINE
LIQUID
LINE
11H 16
5/8
o,
lll°°°
(19)LINE VOLTAGE
(BOTTOM
INLETS
AND LEFT SIDE)
.FILTER
ACCESS
B
lq/2
5/8
(18)
1
(25)
(38)
CONDENSATE
DRAINS (2)
(HORIZONTAL)
Front
End View
Horizontal
Position
5/8
(16)
(44)-
View
(Left-Hand
End View
Air Discharge)
Page 3
CBX32M
SERIES
,&,WARNING
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
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.
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,
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.
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
Page 4
505342M
05/08
floor for properair return.Lennoxoffersan
optionalup-flowunitstandas listedin table1.
r q
Step2_
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.
Step 3..
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.
HORIZONTAL
DRAIN PAN
I(MUST
BE REMOVED)
I;
II
II
UP-FLOW/
CAUTION
DOWN-FLOW i _J
DRAIN PAN
i
Figure 1. Upflow Configuration
Table 1. Optional Unit Side Stand (Up-Flow Only)
Model
Kit Number
-21,-26, and -31
45K31
-41 through -65.
45K32
HORIZONTAL
HORIZONTAL LEFT-HAND DISCHARGE
APPLICATION
DRIP SHIELD
V
HORIZONTAL
I I I
Use the following procedures to configure the unit for
horizontal left-hand discharge operations:
I
NOTE - For horizontal applications, an secondary drain
pan is recommended. Refer to local codes.
DRA,NPAN
DRAIN PAN "_I__
NO ADJUSTMENT
Remove access panels. Remove corrugated padding from
the space between the blower and coil assembly before
operation.
IS NECESSARY
Figure 2. Right-Hand Discharge Configuration
ANGLE IRON OR
SHEET METAL
Step 1.. Remove coil assembly from unit and remove the
horizontal drain pan as illustrated in figure 4,
detail A on page 6.
ELECTRICAL
INLET
CLEARANCE 4 IN. (102 MM)
SCREWS
MAX.
1/2 IN.
Step 2..
q
Remove drain plugs from back drain holes on
horizontal drain pan and reinstall them on front
holes.
A IMPORTANT
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:
Step 3..
Rotate the drain pan 180 ° front to back and
install it on the opposite side of coil,
NOTE - For horizontal applications, an secondary drain
pan is recommended, Refer to local codes,
Step 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.
Step 5..
Rotate horizontal drip shield 180 ° front to back.
Step 1.. Remove access panels. Remove corrugated
padding from the space between the blower and
coil assembly.
Page 5
CBX32M
SERIES
COIL SHOWN IN UP-FLOW
POSITION FOR EASY
CONVERSION
TOP CAP
SCREWS
TOP CAP ROTATED TO
CORRECT POSITION
DETAIL A
DETAIL B
(TOP CAP)
SUPPORT
(DRAIN PAN)
PLUGGED
END
ORIGINAL
PLUG
LOCATION
OPEN
END
FOR
CONDENSATIONCOIL
DRAIN
\
t
G
LOCATION
TOP
_
_
_ ALIGN HOLES WITH
HOLES IN COIL END
CAP
_'_o
_
PLATE.
BEND
90 _
BACK COIL
DETAIL
ENDC SEAL
/
DRAIN PAN
_
[
Figure 4. Left-Hand
Discharge
Step 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,
Step 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,
Modifications
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,
SECURING TAB ON
CABINET SUPPORT RAIL
HORIZONTAL
DRIP SHIELD
\
NOTE - Be very careful when you reinstall the screws into
coil end plate engaging holes. Misaligned screws may
damage the coil,
Step 8,,
From the up-flow 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,
Step 9,.
_
Figure 5. Left-Hand Discharge
DOWN-FLOW
HORIZONTAL
DRAIN PAN
Configuration
APPLICATION
Use the following procedures to configure the unit for
down-flow operations:
WARNING
Knock out drain seal plate from access door,
Secure plate to cabinet front flange with screw
provided,
Step 10,, Flip access door and replace it on the unit.
Step 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,
Step 12,. If the unit is to be suspended, it must be
supported along the entire length of the cabinet
NOTE - If down-flow 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,
Page 6
505342M
05/08
WARNING
COMBUSTIBLE
FLOOR
ADDITIVE BASE
PROPERLY-SIZED
i
FLOOR OPENING,,_
IMPORTANT
Figure 6. Combustible Flooring Additive Base
On combustible flooring, use an additive base as
illustrated in figure 6. and use the following procedures:
_1-
Jh
(289)
11-3/8
--I_
1-5/8(41)
T:
_1-1-5/8
18-1/4(464)
CBX32M-21/26
and 31
CB30M-21/26
SUPPLY
AIR
OPENING
CB30M-21/26
(mm)
inches
l
(41)
oox32 !i
20 (508)
CBX32M-41
to -65
CB3OM-3_
All coils are equipped with a factory-installed, internally
mounted check/expansion valve, which is suitable for use
in applications as follows:
_ i{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{;i;
.............
23-1/4 (591)
CBX32M-41
to -65
to 65
221/8
-,.i 562
5/8 (16)
1OPENING3-3/8
(340) _
iI
valve suitable for HCFC-22 use (CBX32M unit)
•
valve suitable for HFC-410A use (CB30M unit)
The CBX32M/CB30M air handler's coil line sizes are listed
in table 2. Use Lennox L15 (sweat) series line sets (refer to
the outdoor unit Engineering Handbook for proper size,
type and application). For field-fabricated refrigerant lines,
see the piping section of the Lennox Unit Information
Service Manual.
t_65
B30M-31
•
1_
JI
2(51)
SIDE VIEW
_i,
Figure 7. Downflow Combustible
Base Dimensions
Step 1.. Cut an appropriately
sized opening
combustible base as illustrated figure 7.
for
AIR HANDLER
Step 2..
Set the additive base into opening.
Step 3..
Connect supply air plenum to the additive base.
Step 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.
Step 5_
Install retum air plenum and secure with sheet
metal screws.
If the homeowner reports water dripping from supply air
diffusers, check the shields and tape. Make sure the tape is
completely attached to the edges of the drip shield, and
that the drip shield is wedged firmly in place.
SUCTION
UNIT
LINE
LIQUID LINE
Figure 8. Brazing Connections
NOTE - CBX32M series evaporators use nitrogen or dry
air as a holding charge. If there is no pressure when the
rubber plugs are removed, check the coil or line set for
leaks before installing. After installation, pull a vacuum
on the line set and coil before releasing the unit charge
into the system.
Page 7
CBX32M
SERIES
NOTE - See outdoor unit instructions on how to flow
nitrogen through line sets.
Step 1_ Remove access panel,
Step 2,,
Remove the refrigerant
refrigerant lines,
line caps from
the
Step 3,,
Use a wet rag to protect TXV sensing bulb (or
remove
it)
when
brazing
suction
line
connections,
Step 4..
Place a wet rag against piping plate and around
the suction line connection, The wet rag must be
in place to guard against damage to the paint,
Step 5.. With the wet rag in place, position a field
provided elbow fitting to the air handler's suction
line and line set, Start nitrogen flow before
brazing,
Step 6_ After the procedure is completed then remove
the wet rag,
Step 7_
Place wet rag against piping plate and around
the liquid line connection. Position liquid line
elbow to air handler's suction line and to line set.
Start nitrogen flow and begin brazing both
connections and after procedure is completed
then remove both wet rags,
Step 8..
Refer to instructions provided with outdoor unit
for leak testing, evacuating and charging
procedures,
Step 9_
Install access panel,
Connect main condensate drain and route downward to an
open drain or sump. Do not connect drain to a closed waste
system. Refer to figure 9 on page 8 for typical condensate
trap configuration.
It is recommended that the auxiliary drain be connected to
a drain line for all units. If auxiliary drain is not connected, it
must be plugged with provided cap. For down-flow units,
the auxiliary drain shall be connected and routed to a drain.
See figure 10 for auxiliary and main drain locations,
The following practices are recommended to ensure
condensate removal as illustrated in figures 9 and 10:
•
Drain piping should not be smaller than the drain
connections at drain pan.
•
A trap must be installed in the main drain line,
•
The trap must be deep enough to offset the difference
in static pressure between drain pan and atmosphere.
Generally, two inches is satisfactory for medium static
applications.
•
Horizontal runs must be sloped 1 inch per 10 feet of
drain line to offset friction,
•
An open vent in drain line will sometimes be required due
to line length, friction and static pressure,
•
Drain construction and routing should facilitate future
cleaning and must not interfere with filter access,
•
Auxiliary drain should run to an area where
homeowner will notice any drainage. The auxiliary
drain line does not required venting or a trap. Refer to
local codes.
VENT MUST EXTEND ABOVE
DRAIN
Table 2. Refrigerant
CBX32M
Units
Liquid
Line No.
Vapor/
Suction
-018/024
3/8 in
(Smm)
5/8 in
(16 mm)
Line
PAN BY 2 INCHES
THE HEIGHT
OF THE COIL"
(51 MM).
VENT
Line Sets
L10
Line Sets
L15
Line Sets
L10-26
20 ft. - 50 ft.
(6 m- 15 m)
L15-26
20 ft. - 50 fb
(6 m- 15 m)
L10-41
20 ft. - 50 ft.
L15-41
20 ft. - 50 ft.
(6m-15m)
(6m-15m)
DRAIN PAN
TRAP MUST BE DEEP ENOUGH TO OFFSET
MAXIMUM STATIC DIFFERENCE
(GENERAL
2 INCHES
[51MM]).
TRAP (49P66)
-030,-036
-042, -048
-060
3/8 in
(10 mm)
3/4 in.
(19mm
3/8 in
(10 mm)
7/8 in.
(22 mm)
L10-65
30 ft. - 50 ft.
(9 m- 15 m)
L15-65
30 ft. -50 ft.
(9 m- 15 m)
3/8 in
1-1/8 in.
Field
Field
(10 ram)
(29 ram)
Fabricated
Fabricated
Before connecting drain line(s), check
verify that drain opening is fully open
debris. Also check to make sure that no
into the drain pan during installation that
drain opening,
DRAIN
05/08
SLOPE A MINIMUM
1 INCH PER
TO APPROVED
Figure 9. Typical Condensate
LEF%HAND
DISCHARGE
drain hole(s) to
and free of any
debris has fallen
may plug up the
UP-FLOW OR
DOWN-FLOW
w
AUXILIARY
DRAIN ON LEFT
DRAIN
Drain Connection
RIGHT-HAND
DISCHARGE
oo ]
MAIN DRAIN ON RIGHT
Figure 10. Drain Locations
Page 8
505342M
LINE SHOULD
10 FEET (25 MM PER 3 M)
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)
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.
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.
L2 LI
K3 INDOOR
BLOWER RELAY
1L
HEAT ELEMENT _I
NOTE - USE COPPER CONDUCTORS
ONLY.
REFER TO UNIT RATING PLATE FOR MINIMUM
CIRCUIT AMPAClTY AND MAXIMUM OVERCURRENT PROTECTION SIZE
LINE VOLTAGE FIELD INSTALLED
CLASS 2 VOLTAGE FIELD INSTALLED
NEC/CEC
CIRCUIT 1
NOTE - ALL REMAINING WIRES ARE FACTORY
INSTALLED
CIRCUIT BREAKERS OR TERMINAL BLOCK
TRANSFORMER
CB1
K32
GROUND
FUSE
HEAT_RELAY
,I CIRCUIT
LOAD 24VAC AT .50 AMP MAXI-
Z_ THERMOSTAT HEAT ANTICIPATION
AMP ELECTRIC HEAT
BREAKER
OR
,ll
z_TO EXTERNAL
MUM.
_}
±
SETTING 0.4
Z_ WHEN TWO-STAGE THERMOSTAT IS USED,
CONNECT SECOND STAGE HEAT BULB TO TERMINAL "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,
,/_ THERMOSTAT
TB,
.
rj
I r
IL-- L_
L._
(D_
__
TERMINALI0
I j
I
I
"
I
I
__1
-J
/kvv
Figure 11. Typical Field Wiring - Cooling Application with Electric Heat
Page 9
CBX32M
SERIES
K5 INDOOR
BLOWER RELAY
LINE VOLTAGE
NOTE - ALL REMAINING
%
%
@A
LI
L2
CIRCUIT 1
CIRCUIT BREAKERS OR TERMINAL BLOCK
FIELD INSTALLED
CLASS 2 VOLTAGE
FIELD INSTALLED
WIRES ARE FACTORY
NEC/CEC
INSTALLED
L_
TO EXTERNAL
/_
FACTORY
LOAD 24VAC AT .50 AMP MAXIMUM
/_
Y2 USED ONLY WHEN
L_
USING
SERVICE MAY
LIGHT
OPTION MOVING
(S54)WITH$54 SOME
ELECTRONIC
THERMOSTATS
REQUIRE
COMMON
WIRE TO Y1
IN HEAT PUMP UNIT.
/_
COMMON
L_
AMBIENT COMPENSATING
ON SOME THERMOSTATS.
INSTALLED
USED
JUMPERS
TWO SPEED
COMPRESSOR
IS USED (HP21).
ONLY ON SOME THERMOSTATS.
TRANSFORMER
CIRCUIT
BREAKER
CB1
GROUND
CONNECTION
USED ONLY
SI
THERMOSTAT ,/_
99J
O
ORFUSE
TERMINAL
_1
BLOCK
THERMISTOR
I
[
_
I
II
I I
I I II
I
I-4=-IS
I
I
I
,
DFaDD
[]
!
HEAT PUMP CLASS 2
VOLTAGE TERMINALS
Figure 12. Typical Field Wiring
K3
INDOOR
BLOWER
HEAT
ELEMENT
- Heat Pump Only Application
RELAY
_I
EM
LI
L2,_I
CIRCUIT
I
1
CIRCUIT
BREAKERS
TRANSFORMER
OR TERMIAT
NAL BLOC -IIEK
K52
RELAY
'_I
GROUND
CB1
BREAKER
OUTDOOR
THERMOSTAT
ORFUSE
CIRCUIT
TEl
TERM
v
I
--
--
--
LINE VOLTAGE FIELD
INSTALLED
CLASS 2 VOLTAGE FIELD
INSTALLED NEC/CEC
USED)
I
I
I
I
L_
_
FACTORY
A
WHEN OUTDOOR THERMOSTAT
USED, CONNECT LEADS TO
TERMINALS "R" AND "W2" AND
REMOVE JUMPER BETWEEN
TERMINALS "R' AND "W2."
4
q
I
J
,
I[
I
JUMPERS
f___l
r
,r",hI ,rl L L:
THERMOSTAT
HEAT ANTICIPATION
SETTING 0.4 AMP ELECTRIC HEAT
/_
I(IF
Z_
BLOCK
NOTE - ALL REMAINING
WIRES
ARE FACTORY INSTALLED
INSTALLED
INAL
4
+
__1
L
I
I
I
S% D
G
IS
EMERGENCY
HEAT RELAY (USED
ONLY IF OUTDOOR T'STAT IS
USED) FIELD PROVIDED AND
INSTALLED NEW INDOOR UNIT.
24VAC 5VA MAX NEC/CEC
CLASS 2
/_
/_
L_Y2
/_
USING SERVICE LIGHT OPTION ($54) WITH SOME ELECTRONIC
THERMOSTATS
MAY REQUIRE MOVING $54 COMMON WIRE TO Y1 IN
HEAT PUMP UNIT.
COMMON
USED ONLY ON SOME
USED ONLY WHEN TWO-SPEED
AMBIENT COMPENSATING
SOME THERMOSTATS.
THERMOSTATS.
COMPRESSOR
THERMISTOR
O
8
_
o@
8
IS USED (HP21)
CONNECTION
USED ONLY ON
HEAT PUMP CLASS 2
VOLTAGE TERMINALS
Figure 13. Typical Field Wiring - Heat Pump Application with Electric Heat
Page 10
505342M
05/08
m
0d
w
,&
L2 LI
NOTE - USE COPPER CONDUCTORS
ONLY.
REFER TO UNIT RATING PLATE FOR MINIMUM
CIRCUIT AMPAClTY AND MAXIMUM OVERCURRENT PROTECTION SIZE
K3 INDOOR
BLOWER RELAY
LINE VOLTAGE FIELD INSTALLED
_LI
CLASS 2 VOLTAGE FIELD INSTALLED
NEC/CEC
(Black)
NOTE - ALL REMAINING WIRES ARE FACTORY
INSTALLED
L2 (Orange)
CIRCUIT 1
A'X TO EXTERNAL
FIELD-SUPPLIED
WIRE NUTS
TRANSFORMER
CIRCUIT
BREAKER
CB1
OR
FUSE
GROUND
,ll
LOAD 24VAC AT .50 AMP MAXIMUM.
Z_ FACTORY INSTALLED JUMPERS
0
THERMOSTAT
j
r-
I
[
I
L
L
Ir
TBI
_I
I
TERMINAL
BLOCK
J
I
J
wax
Figure 14. Typical Field Wiring - Cooling Only Application
2€v
POWER
R
T
F _
BLL
__
j
EC0N
BLUER
6
CB SERIgS
I
JKEY
1
18_
IMOTOR -I_10_R
_
F
CBB
ACK=ELECTRIC
-
EC8
I ZER
ZZ_
HEAT
STRIP-CLAD5
/_
S[RIEg
I
1
_OMP_)NgNT
IClRCOlr
BREAkER-ELECT,
IClRCUIT
BREAKER-ELECT.
leIRCUIT
BREA_(ER-£LEeT.
IT_
ITERM[NAL
D_?qR{PTIQN
IT
AN_
O6,0 UNIT5
FIELD
VOLTAGE
ONLY
WIRING
FIELD
WIRING
SPEED
TAP
z_
CHART
z_
COMMON
FACTORY
BLOV#ER
SPEED
TAP
SELECTION
UNIT
FOR
BLOVAER
SPEED
INFORMATION,
CLASS
2
3VA
USE
COPPER
CONDUCTORS
REFER
TO UNIT
RATING
CIRCUIT
AMPACITY
AND
L3
ONLY.
PLATE
_AXIMUM
FORMINIMt_
OVERCURRENT
SIZE
CONNECT{ON
USED
ON
(Y)
ELECTRIC
FIELD
UNITS
CIRCUIT
OROUND
L_
THE
IS
NOT
PRESENT
ON
IN
(P)
R[ATER_
INDOOR
ONLy
WOOEL
REFER
TO
FOR ACTUAL
NU_ER
UNIT
LABELED
LI,L2,0N
ON "y"
VOLTAGE
INDOOR
UNIT.
ELECTRIC
VARY
NU_RO_CIRCUITS
HEATERS
ACCORDING
FAN
COIL
EMPLOYED
WIRING
FOR ECB SERIES
WITH CIRCUIT
BREAKERS
3
CIRCUIT
Z_
_EOUIPMEN_
GROUND
LOCATED
CONNECT
PO_VER WIRES
FROM
HEATER
"p* VOLTAGE
UNITS
AND
LI,LZ,L3
UNITS
TO TO2
TERMINAL
STRIP
IN
TO HEATER
NAMEPLATE
C
FIELD
WIRING
FOR ECB
SERIES
UNITS WITHOUT
CIRCUIT
BREAKERS
i
TO
ON
EQUIPMENT
Z_
2¢V
REFER
CHART
A
Z_
Z_
0¢8
VOLTAGE
PROTECTION
HT
HT
HT
STRIP-UNIT
CIRCUIT
ON
--CLASS
L_NEC/OEC
II
KEY
CBE
_CB2
_Cg5
MOTOR
--
H
HEAT
RELAY-ECONOM
ITERI_,
USED
--LINE
_IHIJIJII
I_N_A_,H-INANb
FUSff2TIRANSFORMER
J2
_0_R
ITBI
/3
DESCRIPTION
COMPONEN_
2
CIRCUIT
A
.....t EoU'P"E°T
oo,P E.,
EOU]PMENT
T
GROUND
GROUND
Figure 15. Typical Wiring Diagram - Single Phase
Page 11
CBX32M
SERIES
AIR VOLUME ADJUSTMENT
Blower speed selection is accomplished by changing the
taps at the harness connector at the Blower motor as
illustrated in figure 16. Refer to unit wiring diagram in figure
15 on page 11. Refer to tables 4 through 9 for air handler
)erformance data,
Seal the unit so that warm air is not allowed into the
cabinet. Warm air introduces moisture, which results in
water blow-off problems. This is especially important when
the unit is installed in an unconditioned area,
Make sure the liquid line and suction line entry points are
sealed with either the provided flexible elastomeric thermal
insulation, or field provided material (e.g. Armaflex,
Permagum or equivalent). Any of the previously mention
materials may be used to seal around the main and
auxiliary drains, and around open areas of electrical inlets.
HARNESS
CONNECTOR
F
MINIMUM BLOWER SPEEDS (WITH ELECTRIC
HEATERS)
PRESS THE TAB TO RELEASE WIRE CONNECTOR.
SELECT CONNECTOR
LOCATION FOR NEW SPEED.
INSERT WIRE UNTIL IT CLICKS.
For the minimum allowable speed for the CBX32M series
units with electric heat, refer to the ECB29 installation
instructions.
Figure 16. Blower Speed Tap Selection
Table 4. CBX32M-018/024
External Static
Pressure
in. w.g.
Pa
cfm
.00
0
700
.05
10
695
.10
25
690
.15
35
680
.20
50
665
.25
60
650
.30
75
635
.40
100
590
.50
125
535
.60
150
470
.70
175
395
.75
185
350
NOTE - All air dab is measu_d external
Table
External Static
Pressure
in. w.g.
Pa
.00
0
cfm
1045
Low
L/s
330
330
325
320
315
310
300
280
255
220
185
165
Air Handler Pe_ormance
(208/230V)
Air Volume and Motor Watts at Specific Blower Taps
Medium
Wat_
cfm
L/s
Wat_
cfm
245
245
240
235
230
220
215
205
190
175
165
155
895
890
875
860
845
825
800
745
685
605
520
475
425
420
415
405
400
390
380
355
320
285
245
225
unit with air fil_r in place. Ele_ric hea_
300
295
290
285
280
275
265
250
235
220
200
195
1030
1015
1000
980
960
935
910
850
780
705
615
565
have no app_ciable air
High
L/s
485
480
470
465
455
440
430
400
370
330
290
265
_sis_nce.
5. CBX32M-030
Air Handler Performance
(208/230V)
Air Volume and Motor Wat_ at Specific Blower Taps
Low
Medium
L/s
Wat_
cfm
L/s
Wat_
cfm
490
315
1175
555
335
1290
High
L/s
610
Wat_
365
360
355
345
340
335
325
310
295
280
265
255
Wat_
385
.05
.10
10
25
1075
1085
505
515
310
300
1190
1190
560
560
330
325
1295
1290
610
610
380
375
.15
35
1085
510
295
1175
555
320
1265
600
370
.20
50
1065
505
285
1145
540
310
1230
580
360
.25
.30
60
75
1030
980
485
460
270
255
1105
1045
520
495
295
280
1180
1115
555
525
350
335
.40
100
830
390
220
890
420
250
945
445
305
.50
.60
125
150
615
335
290
155
190
160
675
405
320
190
215
185
720
440
340
205
275
240
NOTE- Allairda_
is measu_d external
unit with airfil_rin
place. Electric hea_
Page 12
505342M
05/08
have no app_ciable air _sis_nce.
Table 6. CBX32M-036 Air Handler
External Static
Pressure
cfm
in. w.g.
Pa
.00
0
915
.05
10
965
.10
25
1005
.15
35
1035
.20
50
1055
.25
60
1060
.30
75
1050
.40
100
1005
.50
125
915
.60
150
775
.70
175
59O
.75
185
485
NOTE - All air data is measured extemal
Table
External Static
Pressure
cfm
in.w.g.
Pa
100
0
1325
105
10
1335
.10
25
1335
.15
35
1330
.20
50
1320
.25
60
1300
.30
75
1270
.40
100
1195
.50
125
1090
.60
150
955
.70
175
795
.75
185
700
NOTE - All air data is measu_d ex_mal
Table
External Static
Pressure
in. w.g.
Pa
.00
0
.05
10
.10
25
.15
35
.20
50
.25
60
.30
75
.40
100
.50
125
.60
150
.70
175
.75
185
NOTE- Allairdata
cfm
1475
1480
1475
1465
1445
1415
1380
1290
1170
1020
840
740
Low
L/s
Performance (208/230V)
Air Volume and Motor Watts at Specific Blower Taps
Medium
Watts
cfm
L/s
Watts
cfm
430
335
1120
530
455
330
1150
540
475
315
1170
550
490
235
1180
560
495
230
1190
560
5OO
220
1185
560
495
215
1175
555
475
290
1135
535
430
255
1060
500
365
230
960
455
280
205
830
390
230
195
750
355
to unit with air filter in place. Electric heaters have
High
L/s
7. CBX32M-042
Air Handler
Performance
(208/230V)
Air Volume and Motor Watts at Specific Blower Taps
Low
Medium
High
L/s
Watts
cfm
L/s
Watts
cfm
L/s
625
370
1600
755
455
1825
860
630
370
1585
750
455
1790
845
630
370
1565
740
450
1750
825
630
365
1540
725
440
1710
805
620
360
1505
710
435
1660
785
615
355
1470
695
425
1610
760
600
350
1425
675
415
1555
735
565
330
1320
625
390
1430
675
515
310
1195
565
365
1290
610
450
285
1050
495
335
1135
535
375
260
875
415
310
965
455
330
250
780
370
295
875
415
_ unit with air filer in place. Ele_dc he_e_ have no app_ciable air _sistance.
8. CBX32M-048
Low
L/s
695
700
695
690
680
670
650
610
550
480
395
350
Air Handler
Performance
5O5
495
480
470
455
440
430
400
375
345
320
305
Watts
565
555
540
530
520
505
495
465
440
415
385
370
(208/230V)
Air Volume and Motor Watts at Specific Blower
Medium
Watts
cfm
L/s
Watts
430
1785
845
520
430
1770
835
515
425
1750
825
510
420
1720
810
500
410
1685
795
490
405
1645
775
480
395
1600
755
465
370
1485
700
440
345
1350
635
410
320
1190
560
380
295
1000
470
350
280
900
425
335
is measu_d ex_mal _ unit with airfil_rin
Watts
390
1525
72O
385
1520
72O
380
1510
715
285
1495
7O5
280
1475
895
275
1450
685
375
1415
67O
325
1335
83O
300
1230
58O
280
1100
52O
255
95O
450
245
870
410
no appreciable air resistance.
Taps
cfm
1910
1895
1870
1840
1800
1755
1700
1580
1425
1250
1045
930
High
L/s
900
895
880
865
850
830
805
745
675
590
495
440
Watts
590
585
580
570
565
550
540
515
485
450
415
400
place. Electnc heate_ have no app_ciable air _sistance.
Page 13
CBX32M
SERIES
External Static
Pressure
in w g
Pa
.00
0
.05
10
Table 9 CBX32M-060
Air Handler Performance
(208/230V)
Air Volume and Motor Wat_ at Specific Blower Taps
Low
Medium
cfm
L/s
Wat_
cfm
L/s
Wat_
cfm
1775
835
585
2025
955
670
2115
1775
835
590
2010
950
665
2100
High
L/s
995
990
Wat_
780
770
.10
25
1770
835
580
1995
940
655
2085
985
765
.15
35
1760
830
570
1975
930
645
2060
970
750
.20
.25
50
60
1745
1725
825
815
560
550
1950
1915
920
905
635
625
2030
2000
960
945
740
730
.30
75
1695
800
535
1880
885
610
1960
925
715
.40
100
1630
770
505
1795
845
580
1870
880
685
.50
.60
125
150
1540
1425
725
675
475
440
1690
1560
795
735
545
515
1755
1620
830
765
655
625
.70
175
1295
610
410
1415
670
480
1465
690
590
.80
.85
200
210
1140
1050
535
495
375
360
1250
1160
590
550
445
425
1290
1195
610
565
560
545
NOTE- Allairda_
is measu_d external _ unit with airfil_rin
place. EleGric hea_
have no app_ciable air _sis_nce.
_IMPORTANT
Matt-
or foil-faced
insulation
is installed
in indoor
equipment to provide a barrier between outside air
conditions
(surrounding
ambient
temperature
and
humidity) and the varying conditions inside the unit. If the
insulation barrier is damaged (wet, ripped, torn or
separated from the cabinet walls), the surrounding
ambient air will affect the inside surface temperature of the
cabinet. The temperature/humidity difference between the
inside and outside of the cabinet can cause condensation
on the inside or outside of the cabinet which leads to sheet
metal corrosion and subsequently, component failure.
REPAIRING DAMAGED INSULATION
Areas of condensation on the cabinet surface are an
indication that the insulation is in need of repair.
If the insulation in need of repair is otherwise in good
condition, the insulation should be cut in an X pattern,
peeled open, glued with an appropriate all-purpose glue
and placed back against the cabinet surface, being careful
to not overly compress the insulation so the insulation can
retain its original thickness. If such repair is not possible,
replace the insulation. If using foil-faced insulation, any
cut, tear, or separations in the insulation surface must be
taped with a similar foil-faced tape.
Page 14
505342M
05/08
Figure 17 Repairing Insulation
ILWARNING
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