24ABS3
Baset Series Air Conditioner with Puronr
1---1/2 To 5 Nominal Tons
Wiring Diagrams
CONNECTION
DIAGRAM
(NOTE #8)
BLU
2 1
5
H
BLU
F
*CH
BLK
or
RED
RED or BLK
L1
BLK
11
21
23
23
L2
C
BLK
BLK
(NOTE #9)
CONT
YEL
SCHEMATIC DIAGRAM (LADDER FORM)
*ST +t
YEL
C
BLK
*CHS
208/230 1Ø
POWER
SUPPLY
YEL
*SC
*SR
BLU
CAP
BRN
L1
COMP
S
5
R
EQUIP
GND
YEL
S
2
H
*SR
C
F
*CH
EQUIP GND
(NOTE #14)
YEL/ BLU
VIO
BLK
YEL
YEL
BLK
CONT
YEL
BRN/YEL
*HPS
*LPS
*DTS
T2
LOGIC
T1
*HPS
BLK
BLU
BLU
LOGIC
BLK
T3
BRN/YEL
BLK
C
R
YEL/ BLU
Y
R
G
INDOOR THERMOSTAT (NOTE #6)
Y
IFR
G
EXTERNAL
POWER
SUPPLY
24 V
(NOTE #3)
R
R
INDOOR
THERMOSTAT
EXTERNAL POWER SUPPLY 24 V
INDOOR BLOWER MOTOR
REQUIRED LIQUID LINE TEMPERATURE
COOLING ONLY
Liquid (PSIG) Required Subcooling
CHARGING PROCEDURE
Pressure
1. Only use sub cooling charging method when OD
at Service Temperature (ºF)
ambient is greater than 70ºF and less than 100ºF,
Valve
indoor temp is greater than 70ºF and less than
5 10 15 20
297
309
68
73
78
83
71
86
81
76
74
89
84
79
77
92
87
82
80
95
90
85
83
98
88
93
86
101
91
96
89
104
94
99
92
97
107 102
95
110 105 100
98
113 108 103
116 111 106 101
119 114 109 104
122 117 112 107
125 120 115 110
128 123 118 113
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.
NOTES:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
Symbols are electrical representation only.
Compressor and fan motor furnished with inherent thermal protection.
To be wired in accordance with National Electric N.E.C. and local codes.
N.E.C. class 2, 24 V circuit, min. 40 VA required, 60 VA on units installed with LLS.
Use copper conductors only. Use conductors suitable for at least 75ºC (167ºF).
Connection for typical cooling only thermostat. For other arrangements see installation
instructions.
If indoor section has a transformer with a grounded secondary, connect the grounded
side to the BRN/YEL lead.
When start relay and start capacitor are installed, start thermistor is not used.
CH not used on all units.
If any of the original wire, as supplied must be replaced, use the same or equivalent wire.
Check all electrical connections inside control box for tightness.
Do not attempt to operate unit until service valves have been opened.
Do not rapid cycle compressor. Compressor must be off 3 minutes to allow pressures to
equalize between high and low side before starting.
Wire not present if HPS, LPS or CTD are used.
C
LEGEND
CONDENSING UNIT CHARGING INSTRUCTIONS
For use with units using R-22 refrigerant
163
171
179
187
196
205
214
223
233
243
253
264
274
285
T3
* CTD
*LLS
T2
T1
*LLS
CAP
(NOTE #14)
*CTD
*DTS
*LPS
CONT
23
23
OFM
OFM
BLK
*ST
+t
*SC
1
*CHS
BRN
L2
COMP
R
C
CONT
11
21
CONT
CAP
*CH
*CHS
COMP
*CTD
*DTS
*HPS
IFR
*LLS
*LPS
OFM
*SC
*SR
*ST
FACTORY POWER WIRING
FACTORY CONTROL WIRING
FIELD CONTROL WIRING
FIELD POWER WIRING
COMPONENT CONNECTION
FIELD SPLICE
JUNCTION
PLUG RECEPTACLE
CONTACTOR
CAPACITOR (DUAL RUN)
CRANKCASE HEATER
CRANKCASE HEATER SWITCH
COMPRESSOR
COMPRESSOR TIME DELAY
DISCHARGE TEMP SWITCH
HIGH PRESSURE SWITCH
INDOOR FAN RELAY
LIQ LINE SOLENOID VALVE
LOW PRESSURE SWITCH
OUTDOOR FAN MOTOR
START CAPICATOR
START RELAY
START THERMISTOR
* MAY BE FACTORY INSTALLED
CAUTION
1. Compressor damage may occur if system is over charged.
2. This unit is factory charged with R-22 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.
330361-101 REV. F
Fig. 1 – Wiring Diagram — Model sizes 1--1/2 -- 5 tons, 208/230--1
CONNECTION DIAGRAM
* CH
L1
BLK
L2
CONT
L1
L3
11
21
13
23
T2
T3
YEL
CONT
11
21
EQUIP
GND
OFM
T2
T1
*CHS
BLU
CONT
13
23
OFM
*CH
YEL
COMP
CAP
BRN
BLK
PRM
CONT 24V COM
BLU
L2
COM
L3
L1
CONT 24
CAP
YEL
T3
EQUIP GND
BLK
YEL
PRM
BLU
COMP
T1
BLK
BRN/YEL
BRN/YEL
L3
PRM L2
L3 L1
RED or BLK
L2
208/23 0 3Ø
OR
460 3Ø
POWER
SUPPLY
SCHEMATIC DIAGRAM (LADDER FORM)
*CHS
RED or BLK
BLK
*HPS
*LPS
VIO
YEL/BLU
T2
CONT
LOGIC
T1
*LPS
* CTD
*HPS
YEL
YEL
T1
* CTD
*LLS
T2
LOGIC
BLU
BLU
T3
Y
T3
IFR
G
BRN/YEL
R
*LLS
BLK
BLK
C
R
IFR
EXTERNAL
POWER
SUPPLY
24 V
(NOTE #3)
R
INDOOR
THERMOSTAT
C
EXTERNAL POWER SUPPLY 24 V
LEGEND
NOTE
NOTES:
1. Symbols are electrical
representation only.
2. Compressor and fan motor
R
G
Y
OFF: NO 24VAC
furnished with inherent
ON: OK
INDOOR BLOWER MOTOR
INDOOR THERMOSTAT (NOTE #6)
thermal protection.
FLASH: PHASE PROBLEM
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,
REQUIRED LIQUID LINE TEMPERATURE
60 VA on units installed
with LLS.
CONT CONTACTOR
Liquid (PSIG) Required Subcooling
5. Use copper conductors
CAP CAPACITOR (DUAL RUN)
only. Use conductors
Pressure
Temperature (ºF)
1. Only use sub cooling charging method
suitable for at least
*CH CRANKCASE HEATER
at Service
75ºC (167ºF).
when OD ambient is greater than 70ºF
6. Connection for typical
Valve
CRANKCASE
HEATER
SWITCH
*CHS
and less than 100ºF, indoor temp is
cooling only thermostat.
COMP COMPRESSOR
For other arrangements
greater than 70ºF and less than 80ºF,
68
73
163
78
83
see installation instructions.
and line set is less than 80 ft.
*CTD COMPRESSOR TIME DELAY
7. If indoor section has a
71 2. Operate unit a minimum of 15 minutes
171
86
81
76
transformer with a
*HPS HIGH PRESSURE SWITCH
74
grounded secondary,
89
84
179
79
before checking the charge.
IFR INDOOR FAN RELAY
connect the grounded
77 3. Measure liquid service valve pressure by
92
87
82
187
side to the BRN/YEL lead.
*LLS LIQ LINE SOLENOID VALVE
8. If any of the original wire,
attaching
an
accurate
gauge
to
the
80
95
90
85
196
as supplied must be
*LPS LOW PRESSURE SWITCH
service port.
replaced, use the same or
83
98
205
93
88
OFM OUTDOOR FAN MOTOR
4. Measure the liquid line temperature by
equivalent wire.
86
101
96
91
9.
Check all electrical
214
PHASE
ROTATION
MONITOR
attaching an accurate thermistor type or
PRM
connections inside control
89
electronic thermometer to the liquid line
* MAY BE FACTORY INSTALLED
223
104
94
99
box for tightness.
10. Do not attempt to operate
near the outdoor coil.
92
233
97
107 102
unit service valves have
been opened.
95 5. Refer to unit rating plate for required
243
110 105 100
1. Compressor damage may occur if system is 11. Do not rapid cycle
subcooling temperature.
98 6. Find the point where the required
over charged.
253
113 108 103
compressor.
Compressor must be off
2. This unit is factory charged with R-22 in
116 111 106 101
264
subcooling temperature intersects the
3
minutes to allow
accordance with the amount shown on the
pressures to equalize
274
119 114 109 104
measured liquid service valve pressure.
rating plate. The charge is adequate for most
between high and low
systems using matched coils and tubing not
285
side before starting.
122 117 112 107 7. To obtain the required subcooling
over 15 feet long. Check refrigerant charge 12. It is imperative to connect
temperature at specific liquid line
297
125 120 115 110
3Ø field power to unit with
for maximum efficiency. See Product Data
pressure, add refrigerant if liquid line
correct phasing. The
Literature for required Indoor air Flow Rates
309
128 123 118 113
temperature is higher than indicated.
Phase Rotation Monitor
and for use of line lengths over 15 feet.
will not allow the contactor
When adding refrigerant, charge in liquid 3. Relieve pressure and recover all refrigerant
to be energized if the
form using a flow restricting device into
before system repair or final disposal. Use all
phasing is not correct. If
phasing is reversed,
service ports and open all flow-control
suction service port. Recover refrigerant
simply inter change any
devices,
including
solenoid
valves.
if temperature is lower. Allow a
two of the three power
4. Never vent refrigerant to atmosphere. Use
connections on field side.
tolerance of +/- 3ºF.
330757-101 REV.C
PRM LED INDICATOR
CONDENSING UNIT CHARGING INSTRUCTIONS
For use with units using R-22 refrigerant
COOLING ONLY CHARGING
PROCEDURE
5
10
15
FACTORY POWER WIRING
FACTORY CONTROL WIRING
FIELD CONTROL WIRING
FIELD POWER WIRING
COMPONENT CONNECTION
FIELD SPLICE
JUNCTION
20
CAUTION
approved recovery equipment.
Fig. 2 – Wiring Diagram — Model sizes 2--1/2 -- 5 tons, 208/230--3 and Model sizes 3 -- 5 tons, 460--3
Copyright 2009 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231
Printed in U.S.A.
Edition Date: 09/09
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
2
Catalog No: 24ABS3---1W
Replaces: New