LENNOX Air Handler Auxiliary Heater Kit Manual L0805583

User Manual: LENNOX LENNOX Air Handler Auxiliary Heater Kit Manual LENNOX Air Handler Auxiliary Heater Kit Owner's Manual, LENNOX Air Handler Auxiliary Heater Kit installation guides

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Page Count: 14

,t_2008 Lennox Industries Inc,

Dallas, Texas, USA

INSTALLATION

INSTRUCTIONS

ECB29 Series Units

ECB31 Series Units

ELECTRIC HEAT SECTIONS

505,251M

01/08

Supersedes 08/06

TeCh nical

blications

Litho U.S.A.

A, CAUTION

Electric Heat Sections .......................... 1

Shipping & Packing List ........................ 1

General Information ........................... 1

Heat Section Installation ........................ 2

Circuit Breaker Installation ...................... 2

Blower Speed Connections ..................... 4

Electrical Connections ......................... 4

Unit Start-Up .................................. 5

Wiring Diagrams .............................. 6

RETAIN THESE INSTRUCTIONS

FOR FUTURE REFERENCE

The ECB29 series electric heat sections provide field

installed electric heat for CB27UH, CBX27UH, CB30M,

CB30U, CBX32M and some CB31MV and CBX32MV se-

ries blower coil units. ECB29 sections are available in

single-phase and three-phase. Single-phase ECB29s are

equipped with either terminal blocks, fuse blocks or circuit

breakers.

ECB31 series electric heat sections provide field installed

electric heat for CB31MV and CBX32MV blower coil sec-

tions. ECB31 sections are equipped with circuit breakers

and are available in single-phase 10kW and 20kW sizes.

Refer to the engineering handbook for specific heat sec-

tion applications.

These instructions are a general guide and do not super-

sede local codes. Local authorities having jurisdiction

should be consulted before installation. Read these in-

structions thoroughly before starting installation.

Only qualified installers or technicians should install the

electric heat section and all other equipment used in HVAC

systems. You must follow federal, state, and local codes

while you install this or any other HVAC equipment.

WARNING

Package 1 of 1 contains

1 - Assembled electric heat section

1 - Bag assembly containing the following:

6-Screws

1-Wiring diagram

1 - Transformer (575V only)

1 - Fuse block extension plate (460V & 575V only)

2 - Adhesive-backed foam seals

Check equipment for shipping damage. If you find any

damage, immediately contact the last carrier,

01/08

IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII Page

Be sure to disconnect all power to the unit while you install

and service this equipment. Use proper tools and protec-

tive equipment during installation and service.

Installation of Lennox blower sections with or without op-

tional electric heat must conform with standards in the Na-

tional Fire Protection Association (NFPA) "Standard for

Installation of Air Conditioning and Ventilation Systems

NFPA No. 90A," and "Standard for Installation of Resident

Type Warm Air Heating and Air Conditioning System, No.

90B," the manufacturer's installation instructions, and lo-

cal municipal building codes.

505,251M

IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII

Before installing the unit, check information on the unit rat-

ing plate to ensure that the unit meets the job specification,

proper electrical power is available, and that proper duct

clearances are maintained.

AWARNING I

NOTE -It is easier to install the ECB29EH heat section in-

side the blower coil unit before the unit is set and the ple-

num is attached.

1, Shut off all power to the blower coil unit, More than one

disconnect may be required,

2, Remove blower section access panel,

3, Remove the electric heat knockout section in the blow-

er coil vestibule panel for the appropriate size of heater

used. Remove the extended width knockout to allow

for installation of 20kW heater (see figure 1).

4, Slide the electric heat section into the blower section.

Be careful that the heating elements do not rub against

the sheet metal opening when they slide into the blow-

er section. The hole(s) on each side of the heater line

up with holes in the blower coil control box, Secure the

electric heater into place with the screws that are pro-

vided in the bag assembly,

l

l

Blower Coil Knockouts

O-O

CB30M-21/26 CB30U-21/26

CBX32M-018/024 CBX32MV-018/024

HOLES IN KNOCKOUT ALLOW ROOM

FOR DIAGONAL CUTTERS USED TO

CUT THROUGH SHEET METAL

CB27UH-018, -024, -030, -036, -042, -048, -060

CBX27UH-018, -024, -030, -036, -042, -048, -060

CB30M-31, -41, -46, -51, -65

CB30U-31,-41,-46,-51 ,-65

CB31MV-41, -51, -65

CBX32M-030, -036, -042, -048, -060

CBX32MV-024/030, -036, -048, -060, -068

O-O

KNOCK

OUT

EXTENDED

WIDTH

WH EN

USING

20KW

ELECTRIC

HEATER

Figure 1

1, Install the circuit breaker on the blower deck flange.

Use the provided screws (6) to secure (see figure 2),

Electric Heat Section with Circuit Breakers

IN DOWNFLOW

APPLICATIONS, CIRCUIT

BREAKERS MUST BE

ROTATED 180 TO THE

UP POSITION.

CIRCUIT _I. t l% . " "_l'_"

CIRCUIT _....._,{_ ./_ I

BREAKER f _ _" /-"-"-_SCIRCUI T BREAKER

BRACKET _ _#" MOUNTING SCREW

(Remove the screw and slide the

breakers off mounting rail. Rotate

breakers 180 ° and slide back on

rail, Secure with screw,)

Figure 2

NOTE -When applied in the downflow position, the circuit

breakers must be rotated to the UP position. See figure

2 and follow the procedure below:

A Disconnect power to the unit if present.

B Remove the screw and slide the breakers off the

mounting rail,

NOTE -You may need to remove the wire tie that's

closest to the circuit breaker to allow for rotation.

C Rotate the circuit breaker 180 _,

D Slide the circuit breaker back on the rail and se-

cure in place with previously removed screw.

2, The blower coil access panels are factory supplied,

and they have a patch plate over the circuit breaker

opening. Remove the circuit breaker patch plate from

the blower access panel, See figure 3,

3, Replace the unit blower access door,

4. Choose the appropriately sized adhesive-backed cir-

cuit breaker seal and remove any perforated sections

(if needed). Apply the seal to the outside of the blower

access panel so that the seal is snug around the circuit

breakers.

5, Break the patch plate for the specific size of electric

heat unit /blower coil unit that you are installing. Dis-

card the unused piece of patch plate, Figure 4 shows

C B30M-21/26, CB 30U-21/26, CBX32M-018/024 and

CBX32MV-018/024 units; refer to figure 5 for all other

blower coil units.

6, Secure the patch plate on the blower access door,

505251M 01/08

Page 2

Circuit Breaker Seal and Patch Plate Installation

BLOWER

ACCESS

PANEL

CIRCUIT

BREAKER

SEAL

PATCH PLATE

CIRCUIT

BREAKERS

BLOWER

CIRCUIT DECK

BREAKER

BRACKET

i_ "m

I I

II II

PATCH _ k "_::_''J I DISCARD I

Break at this point

Figure 3

Circuit Breaker Heater And Patch Plate Configuration

CB30M-21/26, CB30U-21/26, CBX32M-018/024 &CBX32MV-018/024

PATCH PLATE

(Shipped installed on CB unit)

c::_l I I

I I I

I I I Long

I I I Section

Patch plate shown with longest section on

the right side. Patch plate may be factory

installed with long section on the left side,

CIRCUIT BREAKER SEAL

(Shipped with electrical heat and

field installed)

Dotted lines are perforations

ECB29-5CB, ECB29-6CB, ECB29-12.5CB

ECB29-8CB, ECB29-10CB ECB29-15CB

Side Side

of of

Unit Unit

_II_ROTATE 180 and

install over openin!

F_

I I

II I Long

I Section

I I _:_

I DISCARD

Break at this point Break at this point

Figure 4

Page 3

ECB29 SERIES

Circuit Breaker Heater and Patch Plate Configuration

CB27UH/CBX27UH-018, -024, -030, -036, -042, -048, -060;

CB30M-31,-41,-46,-51 -65; CB30U-31,-41,-46,-51,-65; CB31M-41,-51,-65,

CBX32M-030;-036,-042,-048,-060; CBX32MV-024/030,-036,-048,-060,-068

PATCH PLATE

(Shipped installed on CB unit)

c::_l I I c:_

I I I

I I I Long

I I I Section

Patch plate shown with longest section on

the right side, Patch plate may be factory

installed with long section on the left side,

CIRCUIT BREAKER SEAL

(Shipped with electrical heat and

field installed)

Dotted lines are perforations

ECB29-5CB, ECB29-6CB,

ECB29-8CB, ECB29-10CB

Side Of

Unit

ROTATE 180" and

install over opening "_

::: ! II

I

[D' -I \ Break at this point

ECB31-10CB, ECB29-12.5CB

ECB29-15CB, ECB29-20CB

Side Of

Unit

Break at this point

ECB31-20CB, ECB29-25CB

ECB29-30CB

Side Of

Unit

rI[

I I I

I I I Long

I I I section

I I I

[ DISCARD

Break at this point

ECB29-15CB 3 Ph

Side Of

Unit

ILong

Section

I

/41 DISCARD I

Break at this point

Figure 5

When using ECB29 or ECB31 heat section with the CB30M,

CB30U, CB31MV, CBX32M and CBX32MV series blower

coil units, adjust the blower speed according to the size d

electric heat and blower coil unit, The minimum blower set-

ting for each blower size with any heat sections in any ap-

plication is HIGH, See specific blower coil installation instruc-

tions for blower speed adjustment procedure and location.

WARNING

ECB29-20CB 3 Ph

ECB29-25CB 3 Ph

Side Of

Unit

r T [

I I I

I I I Long

I I I Section

I I I

/'4 I DISCARD ]

Break at this point

NOTE -Refer to the nameplate on the blower coil unit for

minimum circuit ampacity and maximum overcurrent

protection size.

The blower coil units are provided with openings to be used

with 1-1/2 inch trade size (1-31/32 inch diameter) conduit.

A conduit reducer washer has been provided if you are

installing a smaller conduit,

For single-point power supply, refer to the nameplate on

the single-point power supply accessory for minimum cir-

cuit 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 Ca-

nadian Electric Code, Part I, CSA Standard C22.1.

LII-"]_[o,Io]_[o,Io]_lIo]ij[o]_,. _] Eo]_Ik'il

505251M 01/08

Page 4

Refertofigure7fortypicalcondensingunitapplicationand

figure8fortypicalheatpumpapplicationwitha blowercoil

unitandelectricheatsection,Figure10showswiringfora

20KWunit.

Refertofigures11through15fortypicalsystemdiagrams

forallunitswithinstalledelectricheatsections.

Make wiring connections

1, Make wiring connections as follows

Heaters equipped with circuit breakers--Connect

field power supply wiring to circuit breaker(s)

Heaters equipped with terminal blocks--Connect

field power supply wiring to terminal block(s).

Heaters equipped with fuses (G and J voltage)-

Connect field power supply wiring to fuse block. (An

extension plate is provided for J voltage units.)

2, Remove the interface harness from the blower coil unit

and connect the plug from the heater to the matching

plug inside blower coil unit.

NOTE -J voltage (575V) heaters are shipped with a

line voltage to 460V transformer, This transformer

provides 460V power to the blower motor only. See

figure 6,

3, If using a two-stage thermostat--Remove the

jumper between terminals "W2" and "R" of TB1 termi-

nal block and connect the second stage heat bulb lead

to "W2",

4, If using an outdoor thermostat--Remove the jump-

er between terminals "W2" and "R" of TB1 terminal

block and connect leads to "W2" and "R".

Installing Transformer (575V only)

Install transformer in the con-

trol box and connect it be-

tween the provided plug in

the blower coil unit,

Figure 6

1. Replace the blower compartment access cover,

2, Restore power to the unit,

3, Set the thermostat heat anticipator to 0.4 amps,

4. Set the thermostat above room temperature,

5, Check the heat pump and the heat section for normal

operation,

6. Set the thermostat to desired setting.

7. Affix thewiring diagram sticker to blower scroll aligned

with CB unit wiring diagram sticker,

L2 LI

[]A

CIRCUIT BREAKERS

OR TERMINAL

BLOCK

Cooling Application With Electric Heat

HEAT ELEMENT tl

K32

K3 INDOOR

BLOWER RELAY

TRANSFORMER

NOTE - USE COPPER CONDUCTORS ONLY

REFER TO UNIT RATING PLATE FOR MINIMUM CIRCUIT AM-

PACITY AND MAXIMUM OVERCURRENT PROTECTION SIZE

NOTE - ALL REMAINING WIRES FACTORY-INSTALLED

LINE VOLTAGE FIELD-INSTALLED

CLASS 2 VOLTAGE FIELD-INSTALLED NEC/CEC

A TO EXTERNAL LOAD 24VAC AT .50 AMP MAXIMUM

HEAT RELAY #I CBI

CIRCUIT

BREAKER

6ROUND

,ll-------[_]] A A

.... I TERMINALI (_

L I _1 I I

rj I L I __w I

I __1

Avv

A THERMOSTAT HEAT ANTICIPATION SETTING 0.4 AMP

(ELECTRIC HEAT)

A WHEN TWO-STAGE THERMOSTAT IS USED, CONNECT

SECOND STAGE HEAT BULB TO TERMINAL 'W2" AND

REMOVE JUMPER BETWEEN TERMINALS "R" AND "W2"

z_ FACTORY-INSTALLED JUMPER

z_L3 CONNECTION USED ON (Y VOLTAGE) 3-PHASE ELEC-

TRIC HEATERS ONLY

Figure 7

Page 5

ECB29 SERIES

L2 LI

I 208-240/60/I

CIRCUIT 1

Heat Pump Application With Electric Heat

[]

CIRCUIT

BREAKERS OR

TERMINAL BLOCK

GROUND

HEAT ELEMENT '1

K3 INDOOR

BLOWER RELAY

TRANSFORMER

K32

HEAT RELAY _I /I r_,

CB1

_TEBIR M CIRCUIT

BREAKER

INAL A

BLOCK __%

'1,, ,,', ,'

I I I sl

-4 4

LINE VOLTAGE FIELD-INSTALLED

CLASS 2 VOLTAGE FIELD-INSTALLED

NEC/CEC

NOTE-ALL REMAINING

WIRES FACTORY-INSTALLED

I .I THERMOSTAT //_

]K22

IEM HEAT RELAY _

4

[

r,dLr

m_

o_Z

orr" LiJ

_w

nL_

laJO

J

I I

I

I

I

I

8 g

8

I

I

I

I

I

iA

8 o

8

8

:2

Z_ THERMOSTAT HEAT ANTICIPATION SETTING 0.4 AMP ELECTRIC HEAT

z_ FACTORY INSTALLED JUMPERS

Z_ WHEN OUTDOOR THERMOSTAT IS USED, CONNECT LEADS TO TERMINALS "R"

AND 'W2" AND REMOVE JUMPER BETWEEN TERMINALS "R' AND 'W2."

Z_ EMERGENCY HEAT RELAY (USED ONLY IF OUTDOOR T'STAT IS USED) FIELD

PROVIDED AND INSTALLED NEAR INDOOR UNIT, 24VAC 5VA MAX NEC/CEC

CLASS 2

z_ USING SERVICE LIGHT OPTION (S54) WITH SOME ELECTRONIC THERMOSTATS

MAY REQUIRE MOVING S54 COMMON WIRE TO Y1 IN HEAT PUMP UNIT,

Z_ COMMON USED ONLY ON SOME THERMOSTATS,

Z_ Y2 USED ONLY WHEN TWO SPEED COMPRESSOR IS USED (HP21).

z_ AMBIENT COMPENSATING THERMISTOR CONNECTION USED ONLY ON SOME

THERMOSTATS,

z:_ L3 CONNECTION USED ON Y VOLTAGE 3 PHASE ELECTRIC HEATERS ONLY,

Figure 8

505251M 01/08

Page 6

Wiring for Models -10, -15, -20 and -25 KW Electric Heat (G Voltage)

COMPONENT ARRANGEMENT

0

SI5

o 0

0

KI5

KEY

:3

HEI

KI5,-E

_,36,- F,2,5

32

0

0

0

/

DESCRIPTION

COMPONENT

rUSE=ELECTRIC HEAT

£LEMENT-ELECTRIC HEAT

]ONTACTOR=ELECTRIC HEAT

RELAY-HEAT BLOWER

3LUG=ELECTRIC HEAT

P2

-I\ /

) K36- IT K36-2 :_:

(_KF5

;_ -3)

SIS

S20

TBS

SWITCH=LIMIT,PRIMARY AUTO RESET

3WITCH-LIMIT,SECONDARY,ELECT. HT

IERMINAL BLOOK-ELECrRlO HEAl

A A

L2

L3

TB3

FUSE SIZE CHART

EQUIPMENT FUSE

GROUND UNIT VOLTAGE SIZE

"G" 20A

ZCB29- I0

ECB29-15 "G" 25A

NOTE-USE COPPER "J" ----

CONDUCTORS ONLY ZCBE9-ZO "G" 35A

".I" 25A

ECB29=25 "G" 40A

"J" 35A

z_& REFER TO UNIT

NAMEPLATE FOR

MINIMUM CIRCUIT

AMPACITY AND

MAXIMUM OVER-

PROTECTION SIZE.

520

T -7 >

K36 3 _ LL_

15-I =

--LINE VOLTAGE FIELD INSTALLED

-,_------OENOTES OPTIONAL COMPONENTS

®DIAGRAM1/96

LENNBX, L_,.o_,o_. WIRING

HEATING UNITS-ELECTRIC

ECBZ9-10,15,ZO,Z5-I-G

ECB29-20,25-I-J

Su£ersedes Form No,

Q Ig95Lenaox IadustrEes In_.

New Form No.

531 , 708W

Lith0 U,S,A.

Figure 9

Page 7

ECB29 SERIES

/

Wiring for 20CB-3 KW Electric Heat (P Voltage)

COMPONENT ARRANGEMENT K35

CBI CB2

DESCRIPTION

KEY COMPONENT

CBI CIRCUIT BREAKER-ELECTRIC HEAT

CB2 CIRCUIT-BREAKER=ELECTRIC HEAT

HFI.2 ELEMENT-ELECTRIC HEAT

HE3,4 ELEMENT-ELECTRIC HEAT

P2 PLUG-ELECTRIC HEAT

K32.-1.2 RELAY-SEQUENCER.ELECTRIC HEAT

K3_,-I,2 RELAY-SEQUENCER,ELECTRIC HEAT

K54,-1,2 RELAY-SEQUENCER.ELECTRIC HEAT

K35,-I RELAY=SEQUENCER,ELECTRIC HEAT

SIS SWITCH-LIMITIPRIMARY ,AUTO RESET

$20 SWITCH-LIMIT,SECONDARY

:HES

Z_ _ CIRCUIT 2

LI_" ?

L2 _ |

C82

EQUIPMENT _

GROUND _ 2-

4E_!

/

P2

A

REFER TO UNIT

NAMEPLATE FOR -3 \

MINIMUM CIRCUIT 2

AMPACITY AND

MAXIMUM OVER- NOTE-USE COPPER

PROTECTION SIZE. CONDUCTORS ONLY

--LINE VOLTAGE FIELD INSTALLED

-,<_DENOTES OPTIONAL COMPONENTS

Z_ fr_ CIRCUIT I

L2_Bq ' l

EOUIPMENT

GROUND

-7 \

/

)

:HE2

i

WIRING DIAGRAM9/_

HEATING UNITS-ELECTRIC

ECB29-20CB-S-P

Supersedes Form No. I New Form NOI

E532,670W

Figure 10

505251M 01/08

Page 8

CB27UH, CBX27UH Blower Coil Unit with Installed Electric Heat -- P Voltage

CIR_IT2_F_

LeL__-

z_L_3_

EOUIPHENT

>-6

DESCRIPTION

BD_3____MOTOR-BLOWER

FI FUSE-TRANSFORMER,TI

J2 JACK-ELECT. HEAT

J4G _AR SPD

JACK-OUTPUT

J49

KIB3,-____l_ELAY-DEHUMIDIFICATION

_46PLUG-DUTPUT

_49 PLUG-MOTOR?VAR SPD

TIJFRANSFORMER-CONTROL

TBIFERM STRIP-CLASS II

B3

>E#D -3 T_

P2 Je i

,_LACK i

C%iT,

TBI

IFIELD WIRING I

UNITS UNITS

WITHOUT WITH

CIRCUIT CIRCUIT

BREAKERS BREAKERS (_ EQUIPHENT EQUIPMENT _d_ 5ROUND

ER HD IPNENT

AI5

J

gl

]

i

i

i

L_

_ BLACK

_ GREEN

i

i

i

N-- 1

24V POWER

i I

® >>BROWN , [] I

_ _ >YELLOW 21

R

I

j_ as

ECON

. B-OVER

AUK HEAT i

AUX HEAT 2

O

vi

V2

COOL/HEAT _ Y2

REV VALVE O

C00LIHEAT i YI

eSTAGE B3 KIO3-] TDI

2 STAGE DEHUMIDIFY

e STAGE K1B3-]

(_x e i STAGE DEHUMIDIFY

]STAGE

HIGH STATIC

i

5RN/

YLV

I STAGE

NORMAL

LOW

VOLTAGE

_L2)

...... 3

A

/I FACTORY BLOWER SPEED TAP SETTINGS

SPEE_ SELECTION

"COOL" "HEAT"

ICON_NS- IHEAT

BLOVERi CDNDENS- HEAT ING UNIT PUMP WITH

C01L ING UNIT PUMP WITH ELECTRIC

ELECTRIC HEAT

HEAT ONLY

COOL COOL HEAT HEAT

PIN #3 PIN #3 PIN #4 PIN #4

SPEED 1 _ 345

TAPS LOV _ _ HIGH

mMININUM SETTING FOR HEAT 24V

COMMON

/_xREFER TO FACTORY BLOWER SPEED TAP SELECTION

CHART FOR DLOWER SPEED INFORMATION AND UNIT

INSTRUCTIONS FOR ADDITIONAL BLOWER SETTINGS

USE COPPER CONDUCTORS ONLY, REFER TO UNIT

/_NAMEPLATE FOR MINIMUM CIRCUIT AMPACITY

AND MAXIMUM OVERCURRENT PROTECTION SIZE

/_JUMPER "YI' TO "Y2 _ IS FOR SINGLE STAGE COOLING,

REMOVE JUMPER "YI' TO 'Y2" FOR TWO STAGE CODLING,

REMOVE RTO W2 JUMPER ON TWO STAGE NON

L_HEAT PUMP APPLICATIONS

CONNECT POWER WIRES FROM HEATER LABELE_ LI,L2 DN

Lv-_,p- VOLTAGE UNITS AND LI,LE,L3 ON "Y" VOLTAGE

UNITS TO TO2 TERMINAL STRIP IN INDOOR UNIT

_kEQUIPMENT GROUND LOCATED IN INDOOR UNIT

Z_S L3 IS NOT PRESENT ON (P) ELECTRIC HEATERS

Z_S THE NUMBER OF CIRCUITS VARY ACCORDING

TO HEATER MOI]EL. REFER TO FAN COIL

NAMEPLATE FOR ACTUAL NUMBER EMPLOYED

Z_S FOR HIGH STATIC APPLICATION, REFERENCE

DEHUMIDIFICATION KIT INSTRUCTIONS

BENOTES OPTIONAL COMPONENTS

-- LINE VOLTAGE FIELD WIRING

.... CLASS II VOLTAGE FIELD VIRING

LENNOX COILS-BLOWER C01L UNITS

°.-1.... I

Figure 11

Page 9

ECB29 SERIES

CB3OM, CB30U Blower Coil Unit with Installed Electric Heat -- P Voltage

_DENOTE5 OPTIONAL COMPONENTS

_LINE VOLTAGEF]ELO_IRING

__ w CLASS[[ VOLTAGEFIELD WIRING

AREFER TO FACTORY BLOWER SPEED TAP SELECTION CHART

zG_ ON UNIT FOR BLOWER GREED INFORMATION

z_NEC/CEC CLASS 23VA

USE COPPER CONOUCTORS ONLY,

REFER TO UNIT NA_PLATE FOR MINIMUM CIRCUIT

AMPACITY AND MAXIMUM OVER-PROTECTION SIZE_

/A CONNECT POWER WIRES FROM HEATER LABELED LI,LG ON

_"P" VOLTAGE UNITS AND LI,L2,L3 ON "Y" VOLTAGE

UNITS TO TOG TERMINAL STRIP [N INDOOR UNIT.

z_EOUIPMENT GROUNO LOCATED IN INDOOR UNIT

Z_L5 IS NOT PRESENT ON (P) ELECTRIC HEATERS

A THE NUMBER OF CIRCUITS VARY ACCORDING TO HEATER _OOEL,

Z_ REFER TO FAN COIL NAMEPLATE FOR ACTUAL NUMBER EMPLOYEO

30MPONENT

ARRANGEMENT

CBI COB KG2

DESCRIPTION

KEY CO_{PONENT

COl CIRCUIT BREAKER-ELECTRIC HEAT

COB C I RCUI T=BREAKER=ELECTRI C HEAT

HFI 2 ELEMENT-ELECTRIC HEAT

H_,4 ELEMENT-ELECTRIC HEAT

P2 PLUG-ELECTRIC HEAT

K32.-1.2 RELAY-SEOUENCER,ELECTRIC HEAT

K35-1 2RELAY-SEGUENCER,ELECTRIC HEAT

K34, - I _2 RELAY-SEOUENCER, ELECTRIC HEAT

GIG GWITCN-LIMITtPRIMARY ,AUTO RESET

OBO BWI TCH_L I M IT, SECONDARY

EQU IPI_ENT N_ ) N_ N

GROUNO 4 - N.GROUND _ _ tm_) -- _._ --

LENNnX,_% ........TIRING OIAGRAMI 5,97 I

"_ ING UNITS-ELECTRI 1

ECB29- 12.5CB, 15CB-2=P

FIELD WIRING FOR ECB

SERIES UNITS WITHOUT

CIRCUIT BREAKERS

_O_ROUITIFqZ_

AL_-- : M

EOUIPMENTz_ GROUNO

FIELD WIRING FOR ECB SERIES

UNITS WITH CIRCUIT BREAKERS

CIRCUIT 3 CIRCUIT 2 CIRCUIT I

A GB__ Z_ CBZ_ Z_ CB_Z_

LB..,---'p--

EQUIPMENT _ GROUND __E GROUND _ EQU[P_ENT EQUIPMENT

GROUND

__ R

]

TB_ z_

_ ECON

F ....

G

W2

CB SERIES

OEBCRIPTION

KEY OO_POREN_

J_ JACK-ELECTRIC HEAT

_45-{ RELAY-ECONOMIZER HEAT

Ti

TBI TER_ STRIP=CLASS II

IKEY I DESCRIPTION

COMPONEN_

ICGI ICIRCUIT BREAKER-ELECT. Hl

CO2 CIRCOiT BREAKER-ELECT HI

IgG3 ICIRCUIT BREAKER_ELECT.

IT_ ITBRWINAL STRIP-UNIT

24V COMMON G

MOTOR SPEED TAP CHART

3SPEED

MOTOR SHO_N

LnnX,_ ....... _IRINGOIAGRA_I,_BI

__"_O[LS-BLOWER COIL UNITS I

CB30M-21/26,31,41,51,65-%P /

CB30U-21/26,31,41_51,65-1-P /

COIL SECTION= {

Figure 12

505251M 01/08

Page 10

CB31MV Blower Coil Unit with installed Electric Heat -- P Voltage

-,_a_DENOTES OPTIONAL COMPONENTS

_L[NE VOLTABEFIELD W]R[NO

-- --CLASS [l VOLTAB[FIELD WIRINO

NOTE_USE COPPER CONDUCTORS ONLY.

AREFER TO UNIT NAMEPLATE FOR MINIMUM CIRCUIT

Z_AMPACITY AND MAXIMUM OVER-PROTECTION SIZE.

A REFER TO FACTORY BLOWER SPEEO TAP SELECTION CHART

_ON UNIT FOR 8LOWER SPEED INFORMATION

A WHEN TWO STAGE THERMOSTA_ IS USED,CONNECT

Z_>_SECONDSTAGEHEAT BULB TO TERMINAL "W2" AND

REMOVE JUMPER BETWEEN TERMINALS "R" & "_2"

A_HEN CS31 IS MATCHEO WITH CONDENSING

L_ UNIT, CONNECT JUMPER BETWEEN "R" _ "0"

z_WHEN HUMIOITY CONTROL A20) IS NOT USED IN

COMB NAT ON W TH _WOSPEEO COMPRESSOR,

CONNECT JUMPER BE_',VEEN "Y2" AND "OS"

A WHEN HUMIDITY CONTROL (A20) IS NOT USED IN

ZJ_ COMBINATION WITH 5INOLE 5PEED COMPRESSOR,

FIELD WIRING FOR

ECB UNITS WITHOUT

CIRCUIT BREAKERS

EQUIPMENT

FIELD WIRING FOR ECB

UNITS WITH CIRCUIT BREAKERS

cI CUIT 4 CIRCUIT 3 CIRCUIT 2

_ca3 A A DBZA ACB_A

A L3"--_ A L3'-----'_ £ L_4- --

EQUIPMENT GROUND

CONNECT JUMPER BETV/EEN "Y]" AND _OS"

CONNECT POWER WIRES PROM HEATER LABELED L{ ,L2 ON I P2 J2

'.VOLTAGSON.SANDL,LE,LSON'Y'MDLTAOE

UNITS TO TB2 TERMINAL STRIP IN INDOOR UNIT. _ _) -I {

AEOOIPMENTOOODNOLOCATEOI.INOOORM,IT { A'SI

z_ L3 IS NOT PRESENT ON IP) ELECTRIC HEATERS -Z _ -

THE NUMOER OP CIRCUITS VARY ACCORDING TO HEATER MODEL. G 6

Z_REFER TO FAN COIL NAMEPLATE FOR ACTUAL NUMBER EMPLOYED K34 >_

CB

A CIRCOI_z A CIRCOIT_ _ _! ?_>--"

LG--,.--__-- LE_"-" o ! , U _1 I b_>-"

csz .. cm ! ! I o I I I b_4>--

, /I <i

' () {)

_ DESCRIPTION

: i "< _ C_ OIRCUIT-BR_AK_R-gLgCTR!C H_AT

HE_ 2ELEMENT-ELECTRIC HEAT

HE3.4 ELEMENT-ELECTRIC HEAT

-- P2 PLUS-ELECTRIC HEAT

/,.ENN_,K_-e,._,.,.o. WIRING DIAGRM/I s/9_ I KSE.q .2 RELAY-SEQUENCER,ELECTRIC HEAT

K33 - [ 2 REi AY-GEOUFNCER._I ECTRIC HEAT

HEATING UNITS=ELECTRIC ' 1 K34,q ._ RELAY-SEOUENCER,ELECTR]O NEAT

-- S15 SWITCH=LIMIT.PRIMARY .AUTO RESE]

S20 SW ITCH =L IM IT, SECONDARY

ECB29- I 2, 5CB, I 5CB_2_P

@,_ L...=.,._._H..,._. LHho U.S.A.

Figure 13

24V POWER R

|_

COOL/HEAT 2 Y2

._ oX,._C Z ;

KEy COMPORENT

_5 CONTROL-BLOWER DRIVE

_3 MOTOR-BLOWER

;_ ;!REVX_ BREAKER

J2 JACK-ELECT. HEAT

J&£ JAC_{-_C_T_RMAR _PO

K2O. - _ ;RELAY-_LOWER

24.V

COM_0N

_ER COIL UNITS

__CB31MV-41,51,65- I -P

Page 11

ECB29 SERIES

CBX32M Blower Coil Unit with installed Electric Heat -- P Voltage

I LINE VOLTAGE FIELD WIRING

-- -- CLASS II VOLTAGE FIELD WIRING

A REFER TO FACTORY BLOWER SPEED TAP SELECTION

Z2_ CHART ON UNIT FOR BLOWER SPEED INFORMATION,

Z_ NEC/CEC CLASS Z 3VA

A USE COPPER CONDUCTORS ONLY,

ZA& REFER TO UNIT RATING PLATE FOR MINIMUM

CIRCUIT AMPACITY AND MAXIMUM OVERCURRENT

PROTECTION SIZE

z_ LB CONNECTION USEO ON (YI ELECTRIC HEATERS ONLY

Z_ CBG USED ON 0€8 AND 060 UNITS ONLY

CONNECT POWER WIRES FROM HEATER LABELED LI,L2,0N

Z_S "P" VOLTAGE UNITS AND LI,L2,L3 ON "Y" VOLTAGE

UNITS TO TB2 TERMINAL STRIP IN INDOOR UNIT.

z_ EQUIPMENT GROUND LOCATED IN INDOOR UNIT

\J&r

z_ L3 IS NOT PRESENT ON (P) ELECTRIC HEATERS /

A THE NUMBER OF CIRCUITS VARY ACCORDING

Z_ TO HEATER MODEL. REFER TO FAN COIL

NAMEPLATE FOR ACTUAL NUMBER EMPLOYED

CB SERIES

DESCRIPTION

KEY COMPONENT

_3 MOTOR-RLO_R

]4 CAPACITOR_BLOWER MOTOR

_G8 CJRCUII BHEAKLR-IRANS I

_1 FUSE=TRANSFORMER

_Z JACK÷ELECTRIC HEAT

(3,-I,2 RELAY-CONTACTOR BLOWER

(431-h RELAY-ECONOMIZER HEAT

TI TRANSFORMER-CONTROL

TBI TERM, STRIP-CLASS II

ECB SERIES

DESCRIPTION HT

KEY I COMPONENT

CBJ CIRCUIT BREAKER-ELECT_ MT

COG CIRCUIT BREAKER-ELECT_

ICB3 ICIRCUIT BREAKER-ELECT. HTI

IT@_ ITERMINAL STRIP-UNIT I

MOTOR SPEED TAP CHART

SPD MOTOR 5 SPD MOTOR MOTOR SPEED

I I RnMMnN

Z _ HIGH

3MEDIUM HIGI

B 4 MEDIUM

5 MEDIUM LOW

# 6 bOW

FIELD WIRING FOR ECB

SERIES UNITS WITHOUT

CIRCUIT BREAKERS

L_ CIRCUIT I_ Z_

LI ---- :

L2 _ : _]

Z_L3= : N

EQUIPMENT

z_ _ GROUND

FIELD WIRING FOR ECB SERIES

UNITS WITH CIRCUIT BREAKERS

CIRCUIT 3 CIRCUIT 2 CIRCUIT I

A cB_A A CBB,_ A CBJZ_

.,--_ L,,--9 u-,--m

L2L'.--2--'---

z_L3_Ik i'_ --Z_ LB"ql'-- -- Z_ L3"III _ --

EOU]PMENT _GROUND

_E GROUND _ EQUIPMENT EQUIPMENT

GROUND

BLUE 24V POWER R

A

F _ ECON

BLOWER 6

WI

W2

[_ 24V COMMON C

LEIIIi/M[_ COILS-BLOVER COIL UNITS

CBX32M_OIB/O24,O30,O36,D42,048,060-230_2

COIL SECT]ON-

oso3 [5S4,028W

534,300W

Figure 14

505251M 01/08

Page 12

CBX32MV Blower Coil Unit with Installed Electric Heat -- P Voltage

",=_--'-INDICATES OPTIONAL COMPONENTS

m LINE VOLTAGE FIELD WIRING

-- --CLASS II VOLTAGE FIELD WIRING

z_REFER TO FACTORY BLO@ER SPEED TAP SELECTION

CHART BELOW FOR BLOWER SPEED INFORMATION

USE COPPER CONDUCTORS ONLY, REFER TO UNIT

NAMEPLATE FOR MINIMUM CIRCUIT AMPACITY

AND MAXIMUM OVERCURRENT PROTECTION SIZE

NOTE-FOR NON-HEAT PUMP APPLICATION ONLY--

WHEN TWO STAGE THERMOSTAT IS UGEO,CONNECT

SECOND STAGE HEAT BULB TO TERMINAL "W2" ANO

REMOVE JUMPER BETWEEN TERMINALS "R" & "W2"

A

/_ JUMPER "R" TO "0" IS USED WITH CONDENSING

UNIT, REMOVE "R" TO "0" JUMPER WHEN HEAT

PUMP IS USED.

Z_ REMOVE JUMPER BETWEEN "OS" AND "YI" WHEN

HUMIDITY CONTROL (CCBI-A20) IG USED,

A/6% JUMPER "YI" TO "Y2" IS FOR SINGLE STAGE COOLING,

REMOVE JUMPER "YI" TO "Y2" FOR TWO STAGE COOLING.

CONNECTRDWERWIRES FROM HEATER LABELED LI,L2 ON

"P" VOLTAGE UNITS AND LhL2,L3 ON "Y" VOLTAGE

UNITS TO T02 TERMINAL STRIP IN INDOOR UNIT

/_EOUIPMENT GROUNDLOCATED IN INDOOR UNIT

Z_ L3 IS NOT PRESENT ON |P) ELECTRIC HEATERS

THE NUMBEROF CIRCUITS VARY ACCORDING

TO HEATERt_ODEL. REFER TO FAN COIL

NAMEPLATEFOR ACTUAL NUMBEREMPLOYED

\-6

/

DESCRIPTION

MP N NT

CONTROL-BLOWER DRIVE

03 MOTOR-BLOWER

CBB CIRCUIT BREAKER

FI FUSE-TRANSFORMER

J2 JACK-ELECT. HEAT

J4_ .JACK-OIJTPIJT

J48 JACK-MOTOR.VAR SPD

J4g JACK-MOTOR.VAR SPD

K20.-1.2 RELAY-BLOWER

P4B PLUG-OUTPUT

P4B PLUG-MOTOR,VAR SPD

P49 PLUG-MOTOR.VAR SPD

TJ TRAN_FO_MFR-_nNTROt

TBI TERM STRIP-CLASS II

_J48

-3

EGUIP

GROUND

CIRCUIT I Z_ I_

K2O

LJ

:>> _LACK

FIELD WIRING FOR UNITS

WITHOUT CIRCUIT BREAKERS

CI.CUIT2_ _

LZ_

EQUIPMENT

A _ GRouND

FIELD WIRING FOR

UNIT5 WITH CIRCUIT BREAKERS

CIRCUIT & CIRCUIT 3CIRCUIT 2

,_c6_ /k ,_ CO2/k A COtAX

U_i L, _,,i L l-- --

LZ ,91"--? L2 _?i L2_--

_L3_ _L3_ _ _L3_ i

EQUIPMENT

_ EQUIPMENT EQUIPMENT

GROUND _" GROUND JL GROUND

BLACK

ORANGE

I2¢V PO_R R

rT

TB _

7

I I 1_-. LAux.EAT, '_'

[]

Z_ I COOL/HEAT 2 Y2

RECOMMENDED BLOWER SPEFO TAP SELECTION

IISPEg O T ,P SELECTION

II coNGE'.Cf";'EAT*CO NSINTI:HI;ATPUMP

COOL COOL HEAT HEAT

_J -060 PIN '3 PIN _3 PIN *1 PIN *l

-068 PIN _PIN m3 PIN _€ PIN _4

*MINIMUM SETTING FOR HEAT 24V

COMMON

_ _.__'2 u_ __ _-__o N._ _ _ t_- _

o oo1_ o o ooo oooo o o 1!1!1!1!l!]!l!]!l!l!]

{ I P49/I_/F,/F,/1X.AX.d,,/F,/F,/IX/F, ,-IX/_,/IX/I_/F,/F,

_:_0 0 (D 0 0 O0 0 0 0 0 0 0 0 C) ]

Figure 15

Page 13

ECB29 SERIES