Carrier Base Series Wiring Diagrams

24ABB3
Baset Series Air Conditioner with Puronr
1---1/2 to 5 Nominal Tons
Single and Three Phase
*CHS
*CH
BLK
or
BLK
RED
(NOTE #9)
RED or BLK
L1
208/230 1Ø
L2
POWER
SUPPLY
EQUIP
GND
(NOTE #14)
YEL/ BLU
*LPS
YEL/PNK
YEL/PNK
*LLS
BLK
YEL/ BLU
Y G R
INDOOR THERMOSTAT (NOTE #6)
CONDENSING UNIT CHARGING INSTRUCTIONS
For use with units using R-410A refrigerant
REQUIRED LIQUID LINE TEMPERATURE
Required Subcooling
Liquid Pressure
at Service
Temperature (ºF)
Valve (psig)
6 8
251 78 76
259 80 78
266 82 80
274 84 82
283 86 84
291 88 86
299 90 88
308 92 90
317 94 92
326 96 94
335 98 96
345 100 98
354 102 100
364 104 102 100
374 106 104 102 100 98
384 108 106 104 102 100 98
395 110 108 106 104 102 100
406 112 110 108 106 104 102
416 114 112 110 108 106 104
427 116 114 112 110 108 106
439 118 116 114 112 110 108
450 120 118 116 114 112 110
462 122 120 118 116 114 112
474 124 122 120 118 116 114
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.
Wiring Diagrams
CONNECTION DIAGRAM
BLK
BLK
BLU
BLU
COMP
CONT BLU
CAP
S YEL
BLK
H
C
11 21
R
YEL
C
23 23
YEL
YEL
*SC
F
OFM
BRN
YEL
BLK
*CTD
*DTS *HPS
BLU/PNK
BLK BLU/PNK
BLK
BRN/YEL
BLK
C
R
INDOOR BLOWER MOTOR
COOLING ONLY
CHARGING PROCEDURE
1. Only use sub cooling charging method
when OD ambient is greater than 70ºF
10 12 14 16
and less than 100ºF, indoor temp is
74 72 70 68
greater than 70ºF and less than 80ºF, and
76 74 72 70
line set is less than 80 ft.
78 76 74 72
2. Operate unit a minimum of 15 minutes before
80 78 76 74
checking the charge.
82 80 78 76
3. Measure liquid service valve pressure by
84 82 80 78
attaching an accurate gauge to the
86 84 82 80
service port.
88 86 84 82
4. Measure the liquid line temperature by
90 88 86 84
attaching an accurate thermistor type or
92 90 88 86
electronic thermometer to the liquid line
94 92 90 88
near the outdoor coil.
96 94 92 90
5. Refer to unit rating plate for required
98 96 94 92
subcooling temperature.
98 96 94
6. Find the point where the required subcooling
96
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.
Fig. 1 – Wiring Diagram — Model sizes 1- -1/2 - - 5 tons, 208/230- -1
SCHEMATIC DIAGRAM (LADDER FORM)
L1
CONT
+t 11 21
*ST
BRN
EQUIP
1 2
GND
*CHS
5
(NOTE #8)
*SR
*CH
BRN/YEL
(NOTE #14)
VIO
*LPS
T2
LOGIC
T1 T3
EXTERNAL
Y
POWER
SUPPLY
G
24 V
(NOTE #3)
R
INDOOR
THERMOSTAT
CONT
CAP
*CH
*CHS
COMP
*CTD
*DTS
*HPS
IFR
*LLS
*LPS
OFM
*SC
*SR
*ST
* MAY BE FACTORY INSTALLED
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.
L2
COMP
R
C
S
5 2
*ST
*SC
+t
1
H
*SR CONT
OFM
23 23
C
F
CAP
CONT
*DTS *HPS
T2
LOGIC
T1 T3
*LLS * CTD
IFR
R C
EXTERNAL POWER SUPPLY 24 V
LEGEND
FACTORY POWER WIRING
FACTORY CONTROL WIRING
FIELD CONTROL WIRING
FIELD POWER WIRING
COMPONENT CONNECTION
FIELD SPLICE
JUNCTION
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
CAUTION
330440-101 REV. F