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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 533-00070 Printed in U.S.A. Form 30XA-1W Pg 1 310 2-07 Replaces: New
Wiring DiagramsINDEX
POWER SCHEMATICS30XA Unit Size Voltage Figure Number Label Diagram
080-120 All 1 00PSN500128400A
140-200380, 460, 575 1 00PSN500128400A
200, 230 2 00PSN500140900A
220, 240200, 230 2 00PSN500140900A
380, 460, 575 3 00PSN500128500A260 All 3 00PSN500128500A280 All 4 00PSN500128600A300 All 3 00PSN500128500A
325, 350 All 4 00PSN500128600A
400All 1 00PSN500128400A
All (Circuit C) 5 00PSN500128800A
450, 500All 3 00PSN500128500A
All (Circuit C) 5 00PSN500128800A
BOARD CONTROL SCHEMATICS30XA Unit Size Voltage Figure Number Label Diagram
080 All 6 00PSN500128200A090-350 All 7 00PSN500128300A400-500 All 8 00PSN500140800A
UNIT CONTROL SCHEMATICS30XA Unit Size Voltage Figure Number Label Diagram
080-350 All 9 00PSN500128100A
400-500All 9 00PSN500128100A
All (Circuit C) 10 00PSN500128700A
COMPONENT ARRANGEMENTS30XA Unit Size Voltage Control Box Type Figure Number Label Diagram
080-120200, 230,
380Power Box 11 TH703002
Display Control Box 12 TH703007460, 575 Combination Power Box/Display Control Box 13 TH703003
140-200200, 230
Breaker Box 14 TH703004Power Box 15 TH703006
Display Control Box 12 TH703007
380, 460, 575
Power BoxDisplay Control Box
220-240200, 230
Breaker Box 14 TH703004Power Box 15 TH703006
Display Control Box 12 TH703007
380, 460, 575
Power BoxDisplay Control Box
260-350 380, 460, 575
Power Box 15 TH703006Display Control Box 12 TH703007
400-500 380, 460, 575
A/B Power Box 15 TH703006Display Control Box 12 TH703007Circuit C Power Box 16 TH703005
FIELD WIRING30XA UNIT SIZE Voltage Figure Number Label Diagram
080-500 All 17 00DCN500002600A
30XA080-500Air-Cooled Liquid Chillers
with COMFORTLINK™ Controls60 Hz
2
GENERALThis publication contains Wiring Diagram information for
the 30XA080-500 air-cooled liquid chillers with electroniccontrols. These chillers are equipped with ComfortLink™ con-trols and electronic expansion valves.
SEQUENCE OF OPERATIONNOTE: For operating sequence, refer to the Controls, Start-Up,Operation, Service, and Troubleshooting literature.
LEGENDA — AlarmALM R — Alarm RelayALT R — Alert RelayCA — Contactor XL-A Circuit CA-1M — Contactor Main YD A CircuitCA-2M — Contactor Delta YD A CircuitCA-S — Contactor Wye YD A CircuitCB — Contactor XL-B CircuitCB-1M — Contactor Main YD B CircuitCB-2M — Contactor Delta YD B CircuitCB-S — Contactor Wye YD B CircuitCB1 — Base Board Mini Circuit BreakerCB2 — Fan Board A Mini Circuit BreakerCB3 — EXV Board Mini Circuit BreakerCB4 — CPM Board A Mini Circuit BreakerCB5 — Fan Board B Mini Circuit BreakerCB6 — EXV Board B Mini Circuit Breaker CB7 — CPM Board B Mini Circuit BreakerCB8 — EMM Board Mini Circuit BreakerCB12 — Isolation Valve Relays Mini Circuit BreakerCB-13 — 115v Feed Circuit BreakerCB14 — HGBP/Pump Board Mini Circuit BreakerCB-A — Circuit Breaker A CircuitCB-B — Circuit Breaker B CircuitCB-FNA1 — Fan Circuit Breaker A CircuitCB-FNB1 — Fan Circuit Breaker B CircuitCC — Contactor XL-C Circuit CCN — Carrier Comfort Network®CC-1M — Contactor Main YD C CircuitCC-2M — Contactor Delta YD C CircuitCC-S — Contacter Wye YD C CircuitCH — ChannelCLR HR — Cooler Heater RelayCLR HTR — Cooler/HeaterCOMM — CommunicationCOMP — CompressorCPM — Compressor Protection ModuleCT — Current TransformerCWFS — Chilled Water Flow SwitchCWP — Chilled Water PumpDGT — Discharge Gas ThermistorDPT — Discharge Pressure TransducerECEXV — Economizer Electronic Expansion ValveECT — Economizer TemperatureEMM — Energy Management ModuleEPT — Economizer Pressure TransducerEQUIP — EquipmentEXV — Electronic Expansion ValveFC — Fan Contactor
FIOP — Factory-Installed OptionFM — Fan MotorFN — FanFU — FuseGFI-CO — Ground Fault Interrupter - Convenience OutletGND — GroundHGBP — Hot Gas BypassHTR — HeaterISO — IsolationISOL VLV — Relay Isolation ValveLEN — Local Equipment NetworkLS — Level SwitchLWT — Leaving Water TemperatureMBB — Main Base BoardMLV — Minimum Load ValveMM — Low Ambient Temperature Head Pressure ControlNEC — National Electrical Code (U.S.A.)OAT — Outdoor Air TemperatureOPT — Oil Pressure TransducerPL — PlugPMP — Chilled Water PumpPMPI — Chilled Water Pump InterlockRUN R — Run RelaySGT — Suction Gas TemperatureSHD R — Shutdown RelaySPT — Suction Pressure TransducerSW — SwitchT — ThermistorTB — Terminal BlockTEMP — TemperatureTRAN — TransformerXL — Across-the-lineY-Delta — Wye-Delta
Terminal Block Connection
Marked Terminal
Unmarked Terminal
Unmarked Splice
Factory Wiring
Optional Wiring
Indicates common potential. Does not represent wiring.
FIOP or Accessory
Wire Tag
NOTES1. Factory wiring is in accordance with Underwriters Laboratories (UL) 1995 standards. Field modifications or additions must be in compliance
with all applicable codes.2. Wiring for main field supply must be rated 75 C minimum. Use copper for all units.
Incoming wire size range for the terminal block is 4 AWG to 500 kcmil.Incoming wire size range for non-fused disconnect with MCA up to 599.9 amps is 3/0 to 500 kcmil.Incoming wire size range for non-fused disconnect with MCA from 600 to 799.9 amps is 1/0-500 kcmil.Incoming wire size range for non-fused disconnect with MCA from 800 to 1199.9 amps is 250-500 kcmil.
3. Terminals 9 and 10 of TB5 are for field external connections for remote on-off. The contacts must be rated for dry circuit application capable ofhandling a 24 vac load up to 50 mA.
4. Terminals 1 and 2 of TB5 are for external connections of chilled water pump interlock. The contacts must be rated for dry circuit applicationcapable of handling a 24 vac load up to 50 mA.
5. Terminals 11 and 13 of TB5 are for control of chilled water pump 1 (PMP1) starter. Terminals 13 and 15 of TB5 are for control of chilled waterpump 2 (PMP2) starter. The maximum load allowed for the chilled water pump relay is 5 va sealed, 10 va inrush at 24 v. Field power supply isnot required. External pump control accessory required.
6. For control of chilled water pumps, a set of normally open contacts rated for dry circuit application must be supplied from field-supplied pumpstarter relay. Connect contacts to violet and pink wires in harness from main base board channel 18. Wires in harness are marked PMP1-13and PMP1-14.
7. Terminals 12 and 13 of TB5 are for an alarm relay. The maximum load allowed for the alarm relay is 10 va sealed, 25 va inrush at 24 v. Fieldpower supply is not required.
8. Make appropriate connections to TB6 as shown for energy management board options. The contacts for occupancy override, demand limitand ice done options must be rated for dry circuit application capable of handling a 24 vac load up to 50 mA.
9. Terminal blocks, TB5 and TB6 are located in the display panel box for all units. Refer to certified dimensional drawing for each unit to get theexact locations.
10. Refer to certified dimensional drawings for exact locations of the main power and control power entrance locations.11. Terminals J3-24 and 25 of the EMM board are for the run relay and shutdown relay. The maximum load allowed for the alarm relay is 10 va
sealed, 25 va inrush at 24 v. Field power supply is not required.
3
Fig. 1 — Power Schematic, 30XA080-120 and 400 (All Voltages); 30XA140-200 (380, 460, 575 v)
LOW AMBIENT TEMPERATUREHEAD PRESSURE CONTROL OPERATION
FIOP/ACCESSORY
PUMP OPTIONFOR 090-160 ONLY, ALL VOLTAGESa30-4543
4
LOW AMBIENT TEMPERATUREHEAD PRESSURE CONTROL OPERATION
FIOP/ACCESSORY
PUMP OPTIONFOR 090-160 ONLY, ALL VOLTAGES
Fig. 2 — Power Schematic, 30XA140-240 (200, 230 v)
a30-4544
5
LOW AMBIENT TEMPERATUREHEAD PRESSURE CONTROL OPERATION
FIOP/ACCESSORY
Fig. 3 — Power Schematic, 30XA220, 240 (380, 460, 575 v); 30XA260, 300, 450, 500 (All Voltages)
a30-4545
6
Fig. 4 — Power Schematic, 30XA280, 325, 350 (All Voltages)
LOW AMBIENT TEMPERATURE HEADPRESSURE CONTROL OPERATION
FIOP/ACCESSORY
a30-4546
7
LOW AMBIENT TEMPERATURE HEADPRESSURE CONTROL OPERATION
FIOP/ACCESSORY
Fig. 5 — Power Schematic, 30XA400-500 (All Voltages — Circuit C Only)
a30-4547
8
*
*
Fig. 6 — Board Control Schematic, 30XA080 (All Voltages)
a30-4548
*Field-Supplied.
9
*
*
Fig. 7 — Board Control Schematic, 30XA090-350 (All Voltages)
a30-4549
*Field-Supplied.
10
*
*
Fig. 8 — Board Control Schematic, 30XA400-500 (All Voltages)
a30-4550
*Field-Supplied.
11
Fig. 9 — Unit Control Schematic, 30XA080-500 (All Voltages)
a30-4551
12
Fig. 10 — Unit Control Schematic, 30XA400-500 (All Voltages — Circuit C Only)
a30-4552
13
*Fus
e bl
ock
repl
aces
fan
conn
ecto
r on
uni
ts w
ith lo
w a
mbi
ent t
empe
ratu
re h
ead
pres
sure
con
trol
opt
ion
inst
alle
d.
Fig
. 11
— C
om
po
nen
t A
rran
gem
ent,
30X
A08
0-12
0 (2
00, 2
30 v
)
A/B
PO
WE
R B
OX
30X
A08
0-12
0 F
OR
200
, 230
V
a30-4553
14
Fig
. 12
— C
om
po
nen
t A
rran
gem
ent,
30X
A08
0-50
0 (A
ll V
olt
ages
)
DIS
PLA
Y C
ON
TR
OL
BO
X 3
0XA
080-
500
FO
R A
LL V
OLT
AG
ES
a30-4554
15
Fig
. 13
— C
om
po
nen
t A
rran
gem
ent,
30X
A08
0-12
0 (4
60 v
)
A/B
PO
WE
R B
OX
DIS
PLA
Y C
ON
TR
OL
BO
X IN
CLU
DE
D 3
0XA
080-
120
FO
R 4
60 V
a30-4541
16
Fig
. 14
— C
om
po
nen
t A
rran
gem
ent,
30X
A14
0-24
0 (A
ll V
olt
ages
)
A/B
BR
EA
KE
R B
OX
30X
A14
0-24
0 F
OR
ALL
VO
LTA
GE
S
a30-4555
17
A/B
PO
WE
R B
OX
30X
A14
0-50
0 F
OR
ALL
VO
LTA
GE
S
Fig
. 15
— C
om
po
nen
t A
rran
gem
ent,
30X
A14
0-50
0 (A
ll V
olt
ages
)
a30-4556
18
Fig
. 16
— C
om
po
nen
t A
rran
gem
ent,
30X
A40
0-50
0 (4
60 v
)
CIR
CU
IT C
PO
WE
R B
OX
30X
A40
0-50
0 F
OR
460
V
a30-4557
19
Fig
. 17
— F
ield
Wir
ing
Sch
emat
ic, 3
0XA
080-
500
(All
Vo
ltag
es)
a30-4542
ICE DONE
DEMAND LIMIT STEP 2
OCCUPANCY OVERRIDE
DUAL SETPOINT1
23
45
67
89
10
11
12
13
14
15
TB5
TB6
12
34
56
78
910
11
12
13
14
15
EMM
FIOP/
ACCESSORY
REMOTE
ON/OFF
SEE
NOTE 3
A
+ COM - SHLD
DATA COM PORT
TERMINAL BLOCK
FIELD POWER SUPPLY
GROUND
(SEE NOTE #2)
21
11
DISCONNECT/BRANCH CIRCUIT
PROTECTION PER NEC
22
12
23
13
EQUIP
GND
TB1A OR TBIB
LEGEND:
A - ALARM
PMPI - CHILLED WATER PUMP INTERLOCK
PMP - CHILLED WATER PUMP
EMM - ENERGY MANAGEMENT
TB - TERMINAL BLOCK
MLV - MINIMUM LOAD VALVE
NEC - NATIONAL ELECTRIC CODE
FIELD POWER WIRING
FIELD CONTROL WIRING
FACTORY INSTALLED WIRING
NOTES:
1. FACTORY WIRING IS IN ACCORDANCE WITH UL 1995 STANDARDS. FIELD MODIFICATIONS
OR ADDITIONS MUST BE IN COMPLIANCE WITH ALL APPLICABLE CODES.
2. WIRING FOR MAIN FIELD SUPPLY MUST BE RATED 75C MINIMUM. USE COPPER FOR ALL
UNITS.
INCOMING WIRE SIZE RANGE FOR THE TERMINAL BLOCK IS #4 AWG TO 500 KCMIL.
INCOMING WIRE SIZE RANGE OF NON-FUSED DISCONNECT WITH MCA UP TO 599.9 AMPS
IS 3/0 TO 500 KCMIL.
INCOMING WIRE SIZE RANGE OF NON-FUSED DISCONNECT WITH MCA FROM 600 TO 799.9
AMPS IS 1/0 TO 500 KCMIL.
INCOMING WIRE SIZE RANGE OF NON-FUSED DISCONNECT WITH MCA FROM 800 TO 1199.9
AMPS IS 250 KCMIL TO 500 KCMIL.
3. TERMINALS 9 AND 10 OF TB5 ARE FOR FIELD EXTERNAL CONNECTIONS FOR REMOTE
ON-OFF.
THE CONTACTS MUST BE RATED FOR DRY CIRCUIT APPLICATION CAPABLE OF HANDLING A
24VAC LOAD UP TO 50 MA.
4. TERMINALS 1 AND 2 OF TB5 ARE FOR EXTERNAL CONNECTIONS OF CHILLED WATER PUMP
INTERLOCK.
THE CONTACTS MUST BE RATED FOR DRY CIRCUIT APPLICATION CAPABLE OF HANDLING A
24VAC LOAD UP TO 50 MA.
5. TERMINALS 11 AND 13 OF TB5 ARE FOR CONTROL OF CHILLED WATER PUMP 1 (PMP 1)
STARTER. TERMINALS 13 AND 15
OF TB5 ARE FOR CONTROL OF CHILLED WATER PUMP 2 (PMP 2) STARTER. THE MAXIMUM
LOAD ALLOWED FOR THE CHILLED
WATER PUMP RELAY IS 5 VA SEALED, 10 VA INRUSH AT 24 V. FIELD POWER SUPPLY IS
NOT REQUIRED.
6. FOR CONTROL OF CHILLED WATER PUMPS, A SET OF NORMALLY OPEN CONTACTS RATED
FOR DRY CIRCUIT APPLICATION MUST
BE SUPPLIED FROM FIELD-SUPPLIED PUMP STARTER RELAY. CONNECT CONTACTS TO
VIOLET AND PINK WIRES IN HARNESS
FROM MAIN BASE BOARD CHANNEL 18. WIRES IN HARNESS ARE MARKED PMP1-13 AND
PMP1-14.
7. TERMINALS 12 AND 13 OF TB5 ARE FOR A ALARM RELAY. THE MAXIMUM LOAD ALLOWED
FOR THE
ALARM RELAY IS 10 VA SEALED, 25 VA INRUSH AT 24V. FIELD POWER SUPPLY IS NOT
REQUIRED.
8. MAKE APPROPRIATE CONNECTIONS TO TB6 AS SHOWN FOR ENERGY MANAGEMENT BOARD
OPTIONS. THE
CONTACTS FOR OCCUPANCY OVERRIDE, DEMAND LIMIT AND ICE DONE OPTIONS MUST BE
RATED FOR
DRY CIRCUIT APPLICATION CAPABLE OF HANDLING A 24VAC LOAD UP TO 50 MA.
9. TERMINAL BLOCKS, TB5 & TB6 ARE LOCATED IN THE DISPLAY PANEL BOX FOR ALL UNITS. REFER TO
CERTIFIED DIMENSIONAL DRAWING FOR EACH UNIT TO GET THE EXACT LOCATIONS.
10.REFER TO CERTIFIED DIMENSIONAL DRAWINGS FOR EXACT LOCATIONS OF THE MAIN
POWER AND
CONTROL POWER ENTRANCE LOCATIONS.
11.J3 - 24 AND 25 OF EMM BOARD ARE FOR RUN RELAY AND SHUTDOWN RELAY. THE
MAXIMUM
LOAD ALLOWED FOR THE RUN AND SHUTDOWN RELAY IS 10 VA SEALED, 25 VA INRUSH AT
24V.
FIELD POWER SUPPLY IS NOT REQUIRED.
NON-FUSED DISCONNECT
FIELD POWER SUPPLY
GROUND
(SEE NOTE #2)
DISCONNECT/BRANCH CIRCUIT
PROTECTION PER NEC
EQUIP
GND
CB-A OR CB-B
12
3
PMPI
CAPACITYLIMIT
SETPOINTRESET
8 T8
SPACETEMP
(10K)J6R
4
3
CH 2
J4+
2
1
CH
11A
J4+
6
5
CH 8
J4+
6
5
CH 9
EMM BOARD
DEMAND LIMIT STEP 1
4-20 MASIGNAL
GENERATOR
4-20 MASIGNAL
GENERATOR
+
-
GRN
BLK
REMOTE LOCKOUT SWITCH
J4+
4
3
CH10
1/2 WATT 250
TYPICAL CONTROL BOX LOCATIONS
AND MAIN POWER ENTRY
BLK
GRN
VIO
VIO
ORN
ORN
GRA
GRA
BLU
BLU
RED
RED
J7B
CH 6
J7A
CH 5
R
S
5V
R
S
5V
DISPLAY PANEL
080-120, 200V, 230V, 380V ONLY
DISPLAY PANEL
080-120, 460V, 575V ONLY
DISPLAY PANEL
140-500 ALL VOLTAGES
INCOMING POWER
140-350 ALL VOLTAGES
EXCEPT 200,230V ONLY
INCOMING POWER CIRCUIT 1
400-500 DUAL POINT POWER
INCOMING POWER CIRCUIT 2
400-500
INCOMING POWER 200,230V
220-240
CONTROL POWER ENTRANCE
400-500
INCOMING POWER CIRCUIT 1
400-500 SINGLE POINT POWER OPTION
MAIN POWER ENTRANCE
080-120 ALL VOLTAGES
AND 140-200, 200V, 230V ONLY
CONTROL POWER ENTRANCE
080-120
CONTROL POWER ENTRANCE
140-350
PUMP POWER BOX
90-160
PMP1
PMP2
MLV-C
MLV-A
MLV-B
21 11
22
12
23
13
SJ7B
J7A
GRA
GRA
BLU
BLU
ORN
ORN
VIO
GRN
VIO
BLK
+
-1/2 WATT 250
GRA
GRA
BLU
BLU
ORN
ORN
VIO
GRN
VIO
BLK
DISPLAY PANEL
080-120 208/230V ONLY
J3
+4
3
CH24
+2
1
CH25
RSHD
RSHD
13
TB5
3.2 AMPSCB8
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 533-00070 Printed in U.S.A. Form 30XA-1W Pg 20 310 2-07 Replaces: New
Copyright 2007 Carrier Corporation
*COMBI box is located at the end of the unit.†PEB1 and PEB2 boxes are located on the side of the unit. If both boxes are used, the one on the left (viewing from the front of the boxes) is PEB1.
Shaded area means that box is not used on this model.
30XA TYPEVOLTAGE
3 PH 60 Hz
POWER AND CONTROL CONNECTIONSCOMBI* PEB1† PEB2†
Power Control Power Control Power Control
080 090 100 110 120
SINGLEPOINT
200 Circuit 1 Yes230 Circuit 1 Yes380 Circuit 1 Yes460 Circuit 1 Yes575 Circuit 1 Yes
DUALPOINT
200 Circuit 1 and 2 Yes230 Circuit 1 and 2 Yes380 Circuit 1 and 2 Yes460 Circuit 1 and 2 Yes575 Circuit 1 and 2 Yes
140160180200
SINGLEPOINT
200 Circuit 1 Yes230 Circuit 1 Yes380 Circuit 1 Yes460 Circuit 1 Yes575 Circuit 1 Yes
DUALPOINT
200 Circuit 1 and 2 Yes230 Circuit 1 and 2 Yes380 Circuit 1 and 2 Yes460 Circuit 1 and 2 Yes575 Circuit 1 and 2 Yes
220 240
SINGLEPOINT
200 Yes Circuit 1230 Yes Circuit 1380 Circuit 1 Yes460 Circuit 1 Yes575 Circuit 1 Yes
DUALPOINT
200 Yes Circuit 1 and 2230 Yes Circuit 1 and 2380 Circuit 1 and 2 Yes460 Circuit 1 and 2 Yes575 Circuit 1 and 2 Yes
260 280300325350
SINGLEPOINT
200230380 Circuit 1 Yes460 Circuit 1 Yes575 Circuit 1 Yes
DUALPOINT
200230380 Circuit 1 and 2 Yes460 Circuit 1 and 2 Yes575 Circuit 1 and 2 Yes
400 450 500
SINGLEPOINT
200230380 Circuit 1 Yes460 Circuit 1 Yes575 Circuit 1 Yes
DUALPOINT
200230380 Circuit 1 Circuit 2 Yes460 Circuit 1 Circuit 2 Yes575 Circuit 1 Circuit 2 Yes
Fig. 17 — Field Wiring Schematic, 30XA080-500 (All Voltages) (cont)