Carrier 24ACC6 Comfort Wiring Diagram

24ACC6
Comfortt Series Air Conditioner
1 1/2 To 5 Nominal Tons
CONNECTION DIAGRAM
2
(NOTE #8)
5
*CHS
*CH
BLK
or BLK
RED
(NOTE #9)
RED or BLK
L1
208/230 1Ø
L2
POWER
SUPPLY
EQUIP GND
YEL/ PNK
BRN/YEL
BLK
*LLS
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
334024-101 REV. B

Wiring Diagrams

BLU
BLU
CAP
BRN
YEL
H
YEL
1
*SC
*SR
C
BLU
BLK F
BLK
BLK
YEL
YEL
CONT
11 21
BRN
23 23
BLK
YEL
BLK
VIO
T2
LOGIC
T3
*HPS
*LPS
YEL/ PNK
BLU/PNK
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,
76 74 72 70
and line set is less than 80 ft.
78 76 74 72
2. Operate unit a minimum of 15 minutes
80 78 76 74
before checking the charge.
82 80 78 76
84 82 80 78
3. Measure liquid service valve pressure
86 84 82 80
by attaching an accurate gauge to the
88 86 84 82
service port.
90 88 86 84
4. Measure the liquid line temperature by
92 90 88 86
attaching an accurate thermistor type
94 92 90 88
96 94 92 90
or electronic thermometer to the liquid
98 96 94 92 line near the outdoor coil.
98 96 94
5. Refer to unit rating plate for required
96
subcooling temperature.
6. Find the point where the required sub-
cooling 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
*CHS
*ST
+t
CONT
S
11
21
C
R
EQUIP
GND
COMP
OFM
*LPS
*CTD
Y
T1
G
BLU/PNK
R
INDOOR THERMOSTAT
LEGEND
EXTERNAL
FACTORY POWER WIRING
POWER
SUPPLY
FACTORY CONTROL WIRING
24 V
(NOTE #3) FIELD CONTROL WIRING
FIELD POWER WIRING
COMPONENT CONNECTION
FIELD SPLICE
JUNCTION
PLUG RECEPTACLE
CONTACTOR
CONT
CAP CAPACITOR (DUAL RUN)
CRANKCASE HEATER
*CH
CRANKCASE HEATER SWITCH
*CHS
COMP COMPRESSOR
COMPRESSOR TIME DELAY
*CTD
*DTS DISCHARGE TEMP SWITCH
*HPS HIGH PRESSURE SWITCH
INDOOR FAN RELAY
IFR
*LLS LIQ LINE SOLENOID VALVE
*LPS LOW PRESSURE SWITCH
OUTDOOR FAN MOTOR
OFM
*SC START CAPICATOR
*SR START RELAY
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.
*CH
COMP
R
C
S
CAP
*ST
*SR
H
5 2
*SC
C
1
CONT
OFM F
23
23
CONT
*HPS
T2
LOGIC
* CTD
T1 T3
*LLS
IFR
R C
EXTERNAL POWER SUPPLY 24 V
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, 24V 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.
L2