Connection Diagram - Carrier 25VNA Service Manual

CONNECTION DIAGRAM

RED
TRAN 24V
BRN
YEL
230V 208V COM
BLK
CONT
L1
BLK
11 21
208/230 1Ø
L2
YEL
POWER
23 23
SUPPLY
C C BLK
EQUIP GND
BRN
RED/WHT
BRN/YEL
1
BRN
RED
SEC1 SEC2
5
CC
PL3
BLU/PNK
HPS
BLU/PNK
HPS
PL2
ORG
RVS RVS
ORG
PL1
BARE
RED
BLK
WHT
GRN
CHOKE
COMM STATUS
UTIL
A B C NO
USE
UNIT OPERATION
This Control Board Contains A Five Minute Short Cycle Protector. A Five Minute Delay Will Occur Between Compressor Off/on
Cycles. To Bypass Delay, Short Forced Defrost Pins For 1 Second Then Release. The Crankcase Heater Is Energized During
Off Cycle Below 75ºF As Needed.
DEFROST TIME SELECTION - The Defrost Interval Time Can Be Field Selected, Dependent Upon Local Georgraphic
Requirements. It Is Factory Set At 90 Minutes And Can Be Changed To Either 30, 60 Or 120 Minutes Via The User Interface.
User Interface Defaults to "AUTO".
DEFROST - Defrost Will Only Be Performed At Outdoor Temperatures Less Than 50ºF. Defrost Will Initiate When Time
Selected Has Elapsed And The Coil Temperature Is Less Than 32ºF (+/-2ºF). It Will Terminate At 65ºF, 50ºF, or 45ºF (+/-5ºF),
As Needed Based On OAT. At Defrost Termination The Outdoor Fan Will Turn On 15 Seconds Before Switching The
Reversing Valve..
FIELD INITIATED FORCED DEFROST - (Shown As Forced Defrost On Board) By Placing A Jumper Across The Forced Defrost
Terminals For 5 Seconds, Or Longer, And Then Removing The Jumper The Unit Will Initate A Defrost Cycle Regardless Of Coil
Temperature. The Defrost Cycle Will Terminate At 65ºF (+/-5ºF) If Coil Termperature Is Above 32ºF Or Outdoor Ambient
Temperature Is Above 50ºF, Defrost Mode Will Terminate After 30 Seconds Of Active Mode.
Fig. 4 – Wiring Diagram — 25VNA Model sizes 2 - - 5 tons, 208/230- -1
COMP
YEL
BLK
S
T1 T2
WHT
BLK
T3
C
RED
M
GRN
CHOKE
YEL
RED
BLK
5
EXV
CHOKE
INVERTER
GRN
MODEL MODEL
SIZE
OFM
24
36
48
BLU
GRN/YEL
60
YEL
BLU YEL
EXV
PWM2 PWM1
PL4
RED
SPT
WHT
BLK
PL11
CB
OST
BLK
BLK
PL6
BRN
OCT
BRN
OAT
BLK
J2
C LS Y O
PL8
FORCED
MODEL DEFROST
User Interface (UI)
D
C
B
A
Humidifier
Fig. 5 – Infinity Furnace or Fan Coil Wiring with
Communicating Variable Speed HP
SCHEMATIC DIAGRAM (LADDER FORM)
COMPONENT ARRANGEMENT
L1
INVERTER
TRAN
CONT
CONT
EQUIP
CONTROL 11 21
GND
BOARD
MODEL PLUG CHART
PIN RESISTANCE (K )
PLUG
2 - 3 (R2)
1 - 4 (R1)
HK70EZ
TRAN 24V
001 5.1 11
002 5.1 18
1
003 5.1 24
004 5.1 33
SEC1 SEC2
CC
PL3
HPS
HPS
PL2
RVS
SPT
RVS
+
5
-
PL1
OST
CHOKE
OCT
COMM STATUS
CONT UTIL LS Y
A BC NO
BLK
USE
OAT
NOTES:
1. Compressor Furnished With Inherent Thermal Protection.
2. To Be Wired In Accordance With National Electric Code (N.E.C.) And Local Codes.
3. Use Copper Conductors Only. Use Conductors Suitable For At Least 70ºC (167ºF).
LS
4. Two Wire A and B Required For Communication. Unit Contains 24 Volt Transformer To Power Control
Board. If Outdoor Unit Improperly Grounded, Connect Indoor Ground To "C" Terminal.
5. If Any Of The Original Wire, As Supplied, Must Be Replaced, Use The Same Or Equivalent Wire.
6. Check All Electrical Connections Inside Control Box For Tightness.
7. Do Not Attempt To Operate Unit Until Service Valves Have Been Opened.
8. Must Use With Infinity User Interface Listed In Pre-sale Literature Only.
-LEGEND-
FACTORY POWER WIRING HPS
FIELD POWER WIRING
INVERTER
FACTORY CONTROL WIRING
LS
FIELD CONTROL WIRING
OAT
COMPONENT CONNECTION
OCT
JUNCTION
OFM
FIELD SPLICE
OST
CONTROL BOARD
CB
CONTACTOR COIL
CC
SYSTEM COMMUNICATION
COMM
COMPRESSOR
COMP
CONTACTOR
CONT
ELECTRONIC EXPANSION VALVE
EXV
Furnace or Fan Coil
VS HP
No
D
C and D
Use
not required on
C C
VS Heat Pump
B B
A A
7
23
CHOKE
5
CHOKE
TRAN
230V C
OFM
EXV
EXV
PWM2
PWM1
PL4
CB
SPT
PL11
OST
PL6
OCT
OAT
J2
C PL8
O
FORCED
MODEL DEFROST
HIGH PRESSURE SWITCH RVS REVERSING VALVE SOLENOID
INVERTER DRIVE SPT SUCTION PRESSURE
LIQUID LINE SOLENOID
TRANSDUCER
THERMISTOR (OUTDOOR AIR) STATUS
SYSTEM FUNCTION LIGHT
THERMISTOR (COIL) TRAN
TRANSFORMER
OUTDOOR FAN MOTOR UTIL
UTILITY CURTAILMENT
THERMISTOR (SUCTION)
338633-101 REV. A
A12055
L2
CONT
23
SPT
+
-
OST
OCT
OAT
LS