Carrier 38BYC User Manual download pdf

38BYC

018–060

60 Hertz

Wiring Diagrams

Fig. 1—38BYC024-042 (31)

208-230v, 1 Phase, 60 Hertz

A99427

*CH

CONNECTION DIAGRAM

RED or BLK

BLK

YEL

COMP

BLK

CAP

YEL

BLU

*SR

*SC

OFM

BRN

BLK

208/230 1Ø

POWER

SUPPLY

INDOOR THERMOSTAT (NOTE #5)

FACTORY POWER WIRING

FIELD POWER WIRING

FACTORY CONTROL WIRING

FIELD CONTROL WIRING

CONDUCTOR ON CIRCUIT BOARD

COMPONENT CONNECTION

1/4-INCH QUICK CONNECT

TERMINALS

FIELD SPLICE

JUNCTION

CAP CAPACITOR (DUAL RUN)

*CH CRANKCASE HEATER

-LEGEND-

CONT

SCHEMATIC DIAGRAM

(LADDER FORM)

EQUIP

GND

EQUIP

*SR

*SC

COMP

CAP

OFM

CONT

OF2OF1

RVS

DFT

*LPS

*DTS

*HPS

CTD

CONT

NOTES:

1. COMPRESSOR AND FAN MOTOR FURNISHED WITH INHERENT THERMAL

PROTECTION.

2. TO BE WIRED IN ACCORDANCE WITH NATIONAL ELECTRIC CODE (N.E.C.) AND

LOCAL CODES.

3. N.E.C. CLASS 2, 24 V CIRCUIT, MIN. 40 VA REQUIRED.

4. USE COPPER CONDUCTORS ONLY FROM DISCONNECT TO UNIT.

5. MUST USE THERMOSTAT AND SUB-BASE AS STATED IN PRE-SALE LITERATURE.

6. IF INDOOR SECTION HAS A TRANSFORMER WITH A GROUNDED SECONDARY,

CONNECT THE GROUNDED SIDE TO "C" ON THE CIRCUIT BOARD.

7. IF ANY OF THE ORIGINAL WIRE, AS SUPPLIED, MUST BE REPLACED, USE THE

SAME OR EQUIVALENT WIRE.

8. CHECK ALL ELECTRICAL CONNECTIONS INSIDE CONTROL BOX FOR TIGHTNESS.

9. DO NOT ATTEMPT TO OPERATE UNIT UNTIL SERVICE VALVES HAVE BEEN OPENED.

10. WHEN DTS, LPS AND HPS ARE NOT REQUIRED, A JUMPER WILL BE INSTALLED

BETWEEN Y AND T1 ON THE DEFROST BOARD.

11. USE CONDUCTORS SUITABLE FOR AT LEAST 75°C (167°F).

FIELD SELECTED TIME PERIOD

BETWEEN DEFROST CYCLES (MINUTES)

CONT

322851-101 REV. D

COMP COMPRESSOR

CTD COMPRESSOR TIME DELAY

CONT CONTACTOR

CB CIRCUIT BOARD

DFT DEFROST THERMOSTAT

DR DEFROST RELAY AND CIRCUITRY

*DTS DISCHARGE TEMP. SWITCH

*HPS HIGH PRESSURE SWITCH

*LPS LOW PRESSURE SWITCH

OFM OUTDOOR FAN MOTOR

RVS REVERSING VALVE SOLENOID

*SC START CAPACITOR

*SR START RELAY

RED or BLK

RED

BRN

YEL

*CH

LOGIC

BLU

23 23

*LPS

*HPS

YEL

BLU or YEL

YEL

BLUBLK

*DTS

BLK

BRN

BLU or YEL

CYO

REL

RW2OYC

OF2

OF1

LOGIC

DFT

BLK

YEL

ORN

WHT

RED

INDOOR UNIT

TERMINAL BLOCK

CYO

REL G

YEL

BLK

LOGI C

BLK

BRN

ORN

BLK

RVS

CTD

PNK

BLK

DFT

YEL

* MAY BE FACTORY OR FIELD INSTALLED

JUMPERED TEST PINS (USE METAL OBJECT), FIELD SPEED-UP CYCLE

HEAT CYCLE: 90 MIN. ACCELERATED TO 21 SEC.

50 MIN. ACCELERATED TO 12 SEC.

30 MIN. ACCELERATED TO 7 SEC.

DEFROST CYCLE: 10 MIN. ACCELERATED TO 2 SEC.

NOTE

THIS DEFROST CONTROL BOARD CONTAINS A FIVE MINUTE SHORT CYCLE PROTECTOR.

A FIVE MINUTE DELAY WILL OCCUR BETWEEN COMPRESSOR OFF/ON CYCLES.

YEL

SPEED

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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book 1 4

Tab 5a 5a

PC 101 Catalog No. 533-771 Printed in U.S.A. Form 38BYC-2W Pg 1 12-99 Replaces: 38BYC-1W

1 2 3 4

Summary of Contents

Page 1 - Wiring Diagrams

38BYC018–06060 HertzWiring DiagramsFig. 1—38BYC024-042 (31)208-230v, 1 Phase, 60 HertzA99427*CHCONNECTION DIAGRAMRED or BLKBLKYELCOMPBLKCAPYELBLU*SR*S

Page 2 - -LEGEND

Fig. 2—38BYC018 (32), 048 (32) 208-230v, 1 Phase, 60 HertzA99431CAP*CH*CHSCOMPCONTCBDFTDR*DTS*HPS*LPSOFMRVS*SC*SR*ST* MAY BE FACTORY OR FIELD INSTALLE

Page 3

Fig. 3—38BYC060 (32) 208-230v, 1 Phase, 60 HertzA99428FACTORY POWER WIRINGFIELD POWER WIRINGFACTORY CONTROL WIRINGFIELD CONTROL WIRINGCONDUCTOR ON CIR

Page 4 - Tab 5a 5a