Carrier Base 24ABC6 Wiring Diagram

24ABC6
Baset16 Air Conditioner
with Puronr Refrigerant

Wiring Diagram

*CHS

BLK

or

RED

RED or B LK

208/230 1Ø

POWER
SUPPLY

(NOTE #14)

YEL/PNK

YEL/ BLU

Y

INDOOR THERMOSTAT (NOTE #6)

*CH

BLK

(NOTE #9)

L1

L2

EQUIP

GND

YEL

YEL/ BLU

*LPS

YEL/PNK

*LLS

BLK

R

G

CONDENSING UNIT CHARGING INSTRUCTIONS

For use with units using R-410A refrigerant

REQUIRED LIQUID LINE TEMPERATURE

Liquid Pressure

at Service

Valve (psig)

251
259
266
274

283
291
299
308

317
326
335
345

354
364
374
384

395
406
416

427
439

450
462
474

Required Subcooling

Temperature (ºF)

681012 14

76 74 72 70 68

78

78 76 74 72 70

80

80 78 76 74 72

82

82 80 78 76 74

84

84 82 80 78 76

86

86 84 82 80 78

88

88 86 84 82 80

90

90 88 86 84 82

92

92 90 88 86 84

94

94 92 90 88 86

96

96 94 92 90 88

98

98 96 94 92 90

100

100 98 96 94 92

102

102 100 98 96 94

104

104 102 100 98 96

106

106 104 102 100 98

108

108 106 1 04 102 100

110

110 108 1 06 104 102

112

112 110 1 08 106 104

114

114 112 110 108 106

116
118

116 114 112 110 108
118 116 114 112 110

120

120 118 116 114 112

122

122 120 118 116 114

124

CONNECTION DIAGRAM

BLK

*DTS

COMP

S

BLK

C

21

23

YEL

YEL

OFM

BLK

BLU/PNK

BLK

R

INDOOR BLOWER MOTOR

CONT

11

23

BLK

BLK

16

BLK

BLU

BLU

BRN

BLU

t

P

CA

H

C

F

BLK

*HPS

1. Only use sub cooling charging method
when OD ambient is greater than 70ºF
and less than 100ºF, indoor temp is
greater than 70ºF and less than 80ºF, and
line set is less than 80 ft.

2. Operate unit a minimum of 15 minutes before
checking the charge.

3. Measure liquid service valve pressure by
attaching an accurate gauge to the
service port.

4. Measure the liquid line temperature by
attaching an accurate thermistor type or
electronic thermometer to the liquid line
near the outdoor coil.

5. Refer to unit rating plate for required
subcooling temperature.

6. Find the point where the required subcooling
temperature intersects the measured liquid
service valve pressure.

7. To obtain the required subcooling temperature
at specific liquid line pressure, add refrigerant
if liquid line temperature is higher than indicated.
When adding refrigerant, charge in liquid form
using a flow restricting device into suction
service port. Recover refrigerant if temperature
is lower. Allow a tolerance of +/- 3ºF.

+

YEL

YEL

BLU/PNK

BRN/YEL

CHARGING PROCEDURE

*ST

BRN

1

(NOTE #8)

BRN/YEL

VIO

LOGIC

T1 T3

EXTERNAL

POWER
SUPPLY

(NOTE #3)

24 V

2

5

*SR

T2

*CTD

C
R

*SC

COOLING ONLY

EQUIP

GND

Y

G

R

INDOOR

THERMOSTAT

*CHS

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. Use conductors suitable for at least 75ºC (167ºF).

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/YEL 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 or CTD are used.

SCHEMATIC DIAGRAM (LADDER FORM)

L1

CONT

11

21

2

5

1

*SR

*CH

*LPS

OFM

(NOTE #14)

*DTS

*LLS

EXTERNAL POWER SUPPLY 2 4 V

*SC

*HPS

R

C

T1 T3

IFR

COMP

S

H

C
F

C

R

LOGIC

* CTD

CAP

*ST

t

+

T2

CONT

23

CONT

L2

23

LEGEND

FACTORY POWER WIRING

FACTORY CONTROL WIRING

FIELD CONTROL WIRING

FIELD POWER WIRING

COMPONENT CONNECTION

FIELD SPLICE

JUNCTION

CONT

COMP

CONTACTOR
CAPACITOR (DUAL RUN)

CAP

CRANKCASE HEATER

*CH

CRANKCASE HEATER SWITCH

*CHS

COMPRESSOR
COMPRESSOR TIME DELAY

*CTD

DISCHARGE TEMP SWITCH

*DTS

HIGH PRESSURE SWITCH

*HPS

INDOOR FAN RELAY

IFR

LIQ LINE SOLENOID VALVE

*LLS

LOW PRESSURE SWITCH

*LPS

OUTDOOR FAN MOTOR

OFM

START CAPICATOR

*SC

START RELAY

*SR

START THERMISTOR

*ST

* MAY BE FACTORY INSTALLED

CAUTION

1. Compressor damage may occur if system is over charged.

2. This unit is factory charged with R-410A in accordance with
the amount shown on the rating plate. The charge is
adequate for most systems using matched coils and tubing
not over 15 feet long. Check refrigerant charge for maximum
efficiency. See Product Data Literature for required Indoor
air Flow Rates and for use of line lengths over 15 feet.

3. Relieve pressure and recover all refrigerant before system
repair or final disposal. Use all service ports and open all
flow-control devices, including solenoid valves.

4. Never vent refrigerant to atmosphere. Use approved
recovery equipment.

330440-101 REV. F

Fig. 1 – Wiring Diagram — Model sizes 1--1/2 -- 5 tons, 208/230--1

Copyright 2010 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231

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

Printed in U.S.A. Edition Date: 0 1/10

Catalog No: 24ABC6--- 1W

Replaces: New

2