38CK(M)1 and 3 Phase

Wiring Diagrams

Fig. 1—38CK018-321, 341; 024-321, 331, 341; 030-301, 321, 331;036-331, 341; 042-331, 341; 048-351, 361

38CKM024-321, 331, 341; 030-301, 321, 331; 036-331, 341;042-331, 341; 048-351, 361

208-230v, 1 Phase, 60 Hertz

A94412

*CH (NOTE #9)RED or BLK

RED or BLKBLK

208/230 1ØPOWERSUPPLY

L1L2

EQUIPGND

CONT

11 2123 23

YEL

OFMYEL

COMP BLU

BRN

BRNYEL

SC

R YEL

YEL

BLUBLU

BRN*SC

BLK

BLK

*ST

*SR

1 25

CAP

*LPS*DTS*HPS

BLK BLK YELBLU

VIO

H

C

F

CONNECTION DIAGRAM

+t°

BLU

BLK

BLU YEL

*CTDBRN

(NOTE #14)

BLUBLU

BLK

*LLS

BLK

Y RGINDOOR THERMOSTAT (NOTE #5) INDOOR BLOWER MOTOR

EXTERNAL POWERSUPPLY 24V(NOTES #3 & #6)

(NOTE #8)

FACTORY POWER WIRINGFACTORY CONTROL WIRINGFIELD CONTROL WIRINGFIELD POWER WIRINGCOMPONENT CONNECTIONFIELD SPLICEJUNCTION

CONT CONTACTORCAP CAPACITOR (DUAL RUN)*CH CRANKCASE HEATERCOMP COMPRESSOR*CTD COMPRESSOR TIME DELAY*DTS DISCHARGE TEMP. SWITCH*HPS HIGH PRESSURE SWITCHIFR INDOOR FAN RELAY*LLS LIQ. LINE SOLENOID VALVE*LPS LOW PRESSURE SWITCHOFM OUTDOOR FAN MOTOR*SC START CAPACITOR*SR START RELAY*ST START THERMISTOR* MAY BE FACTORY OR FIELD

INSTALLED.

-LEGEND-

SCHEMATIC DIAGRAM(LADDER FORM)

11 21CONT

L1

EQUIPGND

*SR

*SC5 21 H

CF

*ST

OFM

+t°CONT

23 23CAP

S

C RCOMP

L2

*LPS*DTS*HPS

CONT

IFR

EXTERNAL POWER SUPPLY 24 V

*CTD(NOTE #14)

Y

G

RINDOOR THERMOSTAT

R C

*CH-NOTES-

1. Symbols are electrical representation only.2. Compressor and fan motor furnished with inherent thermal

protection.3. To be wired in accordance with National Electric N.E.C.

and local codes.4. N.E.C. class 2, 24 V circuit, min. 40 VA required, 60 VA on

units installed with LLS.5. Use copper conductors only.6. Connection for typical cooling only thermostat, for other

arrangements, see installation instructions.7. If indoor section has a transformer with a grounded

secondary, connect the grounded side to the BRN lead.8. When start relay and start capacitor are installed, start

thermistor is not used.9. CH not used on all units.10. If any of the original wire, as supplied, must be replaced,

use the same or equivalent wire.11. Check all electrical connections inside control box for

tightness.12. Do not attempt to operate unit until service valves have

been opened.13. Do not rapid cycle compressor. Compressor must be off

3 minutes to allow pressures to equalize between highand low side before starting.

14. Wire not present if HPS, LPS, DTS or CTD are used.

317738-401 REV. B

LOGICT1 T3

T2

IFR

CR

*LLS

LOGICT1 T3

T2

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Book 1 4Tab 2a 3a

PC 101 Catalog No. 533-870 Printed in U.S.A. Form 38CK-8W Pg 1 2-95 Replaces: New

Fig. 2—38CK060-351, 361, 371, 381

208-230v, 1 Phase, 60 Hertz

A94321

23

RED or BLK

EQUIP GND

L1

L2 11 21

13

BLK

OFM

BLKVIO

BLU YEL

BRNLLS

Y R

CH (NOTE #9)

HPS LPS

LOGIC

CONNECTION DIAGRAM

G

13

EQUIP GND

L1

11 21

CH

COMP

CONT

23

OFM

CAP

L2

SCHEMATIC DIAGRAM(LADDER FORM)

MAY BE FACTORY OR FIELD INSTALLED

322183 - 401 REV. A

- LEGEND -

FACTORY POWER WIRING FACTORY CONTROL WIRING FIELD CONTROL WIRING FIELD POWER WIRING COMPONENT CONNECTION FIELD SPLICE JUNCTION CONTACTOR CAPACITOR (DUAL RUN) CRANKCASE HEATER COMPRESSOR COMPRESSOR TIME DELAY DISCHARGE TEMP. SWITCH HIGH PRESSURE SWITCH INDOOR FAN RELAY LIQ. LINE SOLENOID VALVE LOW PRESSURE SWITCH OUTDOOR FAN MOTOR START CAPACITOR START RELAY START THERMISTOR

LLS

CAPCH

COMP

CONT

HPSIFR

OFM

CONT

CTD

LPS

CONT

BRN

BLUT3

T2

BLK BLK

IFREXTERNAL

POWER SUPPLY

24 V (NOTES #3 & #6)

INDOOR THERMOSTAT

(NOTE #5)

INDOOR BLOWER MOTOR

LLS

Y

G

HPS LPS

LOGIC

R

T3

T2

EXTERNAL POWER

SUPPLY 24 V

INDOOR THERMOSTAT

CONTCTD

R C

IFR

BLK

T1

C R

T1

NOTES: 1. SYMBOLS ARE ELECTRICAL REPRESENTATIONS ONLY. 2. COMPRESSOR AND FAN MOTOR FURNISHED WITH INHERENT THERMAL PROTECTION. 3. TO BE WIRED IN ACCORDANCE WITH NATIONAL ELECTRIC N.E.C. AND LOCAL CODES. 4. N.E.C. CLASS 2, 24 V CIRCUIT, MIN. 40 VA REQUIRED, 60 VA ON UNITS INSTALLED WITH LLS. 5. USE COPPER CONDUCTORS ONLY. 6. CONNECTION FOR TYPICAL COOLING ONLY THERMOSTAT. FOR OTHER ARRANGEMENTS, SEE INSTALLATION INSTRUCTIONS. 7. IF INDOOR SECTION HAS A TRANSFORMER WITH A GROUNDED SECONDARY, CONNECT THE GROUNDED SIDE TO THE BRN LEAD. 8. WHEN START RELAY AND START CAPACITOR ARE INSTALLED, START THERMISTOR IS NOT USED. 9. CH NOT USED ON ALL UNITS. 10.IF ANY OF THE ORIGINAL WIRE, AS SUPPLIED, MUST BE REPLACED, USE THE SAME OR EQUIVALENT WIRE. 11.CHECK ALL ELECTRICAL CONNECTIONS INSIDE CONTROL BOX FOR TIGHTNESS. 12.DO NOT ATTEMPT TO OPERATE UNIT UNTIL SERVICE VALVES HAVE BEEN OPENED. 13.DO NOT RAPID CYCLE COMPRESSOR. COMPRESSOR MUST BE OFF 3 MINUTES TO ALLOW PRESSURES TO EQUALIZE BETWEEN HIGH AND LOW SIDE BEFORE STARTING. 14.WIRE NOT PRESENT IF HPS, LPS, DTS OR CTD ARE USED.

YEL

BLU

RED or BLK

208/230 10 POWER SUPPLY

BLU

YEL

YEL

YEL

BRN

C

S

+tST5 2

1

SR

H

C

F

DTS

STSRSC

DTS

C

R

S H

C

F

+t

ST

YEL

BLU

CTD

YEL

1 2

5

SC (NOTE #8)

YEL BRN

BLUBLK

SR

BLU(SEE NOTE #14)

DTS

BLK BLK

BLU

(SEE NOTE #14)

R

2

Fig. 3—38CK030-501,521; 036-531, 541, 631, 641;042-531, 541, 631, 641; 048-551, 561, 651, 661;

060-551, 561, 571, 581, 651, 661, 671, 681

208/230v and 460v, 3 Phase, 60 Hertz

A94414

FACTORY POWER WIRING

FACTORY CONTROL WIRING

FIELD CONTROL WIRING

FIELD POWER WIRING

COMPONENT CONNECTION

FIELD SPLICE

JUNCTION

CONT CONTACTOR

CAP CAPACITOR (DUAL RUN)

*CH CRANKCASE HEATER

COMP COMPRESSOR

*CTD COMPRESSOR TIME DELAY

IDF INDOOR FAN

*HPS HIGH PRESSURE SWITCH

IFR INDOOR FAN RELAY

*LLS LIQ. LINE SOLENOID VALVE

*LPS LOW PRESSURE SWITCH

OFM OUTDOOR FAN MOTOR

* MAY BE FACTORY OR FIELD

INSTALLED.

-LEGEND-

319390-401 REV. B

CONNECTION DIAGRAM

SCHEMATIC DIAGRAM(LADDER FORM)

11 21

CONT

L1

EQUIPGND

OFM CONT

23 13

CAP

COMP L3

*LPS*HPS

CONT

IFR

EXTERNAL POWER SUPPLY 24 V

*CTD

Y

G

RINDOOR THERMOSTAT

R C

*CH

-NOTES-1. Symbols are electrical representation only.2. Compressor and fan motor furnished with inherent thermal

protection.3. To be wired in accordance with National Electric N.E.C.

and local codes.4. N.E.C. class 2, 24 V circuit, min. 40 VA required, 60 VA on

units installed with LLS.5. Use copper conductors only.6. Connection for typical cooling only thermostat, for other

arrangements, see installation instructions.7. If indoor section has a transformer with a grounded

secondary, connect the grounded side to the BRN lead.8. If any of the original wire, as supplied, must be replaced,

use the same or equivalent wire.9. Check all electrical connections inside control box for

tightness.10. Do not attempt to operate unit until service valves have

been opened.11. Do not rapid cycle compressor. Compressor must be off

3 minutes to allow pressures to equalize between highand low side before starting.

12. It is imperative to connect 3Ø field power to unit withcorrect phasing. wrong phasing will cause reverse rotationof scroll compressor which will result in reduced currentdraw, elevated noise level and improper operation. Ifrotation is reversed, simply interchange any two of thethree power connections on field side.

*LLS

LOGICT1 T3

T2

CONT

COMP

EQUIP GND

L1

L3

RGY

208/230 3Ø460 3ØFIELD

POWER SUPPLY

L2BLU

RED or BLK *CH (NOTE 8)RED or BLK

BLK

YELYEL

BRN

YEL

BLK CAP

OFM

BRNBLK

VIO

YEL

*LPS

YELBLU

*HPS

BLU

BLU

EXTERNALPOWER SUPPLY

24 V(NOTES 3 & 6)

BRN

BLK

*LLS

BLK

INDOOR BLOWER MOTORINDOOR THERMOSTAT (NOTE 5)

11 21

13 23

L2

T2T1

T3

T2T1

T3

LOGICT1 T3

T2

CR

3

Copyright 1995 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 38ck8w

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Book 1 4Tab 2a 3a

PC 101 Catalog No. 533-870 Printed in U.S.A. Form 38CK-8W Pg 4 2-95 Replaces: New