Electrical Wiring Installation

[1] Wiring of main power supply and equipment capacity

Schematic Drawing of Wiring (Example) A: Switch (Breakers for wiring

and current leakage) B: Breakers for current leakage C: Outdoor unit

D: Pull box E: Indoor unit

B C

3N~380–415V L¹, L², L³, N

B A

~220–240V A L, N

PE PE

E E

Thickness of wire for main power supply, capacities of the switch and system impedance

Model Minimum wire thickness (mm²)

Breaker for current leakage Local swtich (A) Breaker for wiring (NFB) (A)

Max. Permissive System Impedance

Main cable Branch Ground Capacity Fuse

CAHV-P500YA-HPB 25 - 25 75A 100mA 0.1sec. or less 75 75 75 0.28 Ω

1. Use dedicated power supplies for the unit. Ensure each units are wired individually.

2. Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and connections.

3. The wire size is the minimum value for metal conduit wiring. If the voltage drops, use a wire that is one rank thicker in diameter.

Make sure the power-supply voltage does not drop more than 10%.

4. Specific wiring requirements should adhere to the wiring regulations of the region.

5. Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord (design 60245 IEC57).

6. A switch with at least 3 mm contact separation in each pole shall be provided by the Air Conditioner installer.

7. Do not install a phase advancing capacitor on the motor. Doing so may damage the capacitor and result in fire.

The figure in the parentheses indicates the capacity necessary when the "Maximum capacity operation"

setting is selected.

Warning:

• Be sure to use specified wires for connections and ensure no external force is imparted to terminal connections. If connections are not fixed firmly, heating or fire may result.

• Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.

Caution:

• Some installation sites may require attachment of an earth leakage breaker for the inverter. If no earth leakage breaker is installed, there is a danger of electric shock.

• Do not use anything other than a breaker and fuse with the correct capacity. Using a fuse or wire of too large capacity may cause malfunction or fire.

Note:

• This device is intended for the connection to a power supply system with a maximum permissible system impedance shown in the above table at the interface point (power service box) of the user’s supply.

• The user must ensure that this device is connected only to a power supply system which fulfils the requirement above.

If necessary, the user can ask the public power supply company for the system impedance at the interface point.

• This equipment complies with IEC 61000-3-12 provided that the short-circuit power SSC is greater than or **equal to SSC (2) at the interface point between the user’s supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit power SSC greater than or equal to SSC (2).**

S

(*2)

Model S

(MVA)

CAHV-P500YA-HPB 4.11

40 5 - 41 _indd

Types of control cables

Control cable wiring

Remote controller cable

Size 0.3 - 1.25 mm² (Max. 200 m total)

cable types CVV

M-NET cable between units *1

Size More than 1.25 mm² (Max. 120 m total)

cable types Shielding wire CVVS, CPEVS or MVVS

External input wire size Min. 0.3 mm²

External output wire size 1.25 mm²

*1. Use a CVVS or CPEVS cable (Max. total length of 200 m) if there is a source of electrical interference near by (e.g., factory) or the total length of control wiring exceeds 120 m.

41 5 - 42 _indd

[2] Cable connections

<1> Terminal Block Arrangement

To remove the front panel of the control box, unscrew the four screws and pull the panel forward and then down.

L1 L2 L3 N 74 73 72 71 70 66 62 20 19 12 11

262524231615T2T1MBMARBRA

Control terminal block

Power supply terminal block TB2 Cable strap

Power wire Cable from another unit Transmission cable

Cable strap

Power supply terminal block

Important: Power supply cables larger than 60 mm² in diameter are not connectable to the power supply terminal block (TB2). Use a pull box to connect them.

<2> Installing the conduit tube

Punch out the knockout hole for wire routing at the bottom of the front panel with a hammer.

When putting wires through knockout holes without protecting them with a conduit tube, deburr the holes and protect the wires with protective tape.

If damage from animals is a concern, use a conduit tube to narrow the opening.

• Burr Knockout hole

42 5 - 43 _indd

43 2345761

541

1 23 4

7653

1233 L3L2L1

3 4

3 2 1

2 1 3

7 2

3 1

1 2

5 6

1 2 3

4 1

3 4 5 6

12 34

132 12

1 2

2145

1 63

3 N

2 12

64 21

3 2

2 1 3

124

7 6

5 4 5

56454332

11 3

11 4

3 1

11 12

222322342

6 1

123

4 3

1 2 654

13 L3

1 2 3 4 1

3 2

L2L1

3 1

3 2

THHSIGBT temperature Z21Function setting connector

SymbolExplanationSymbol explanation MAIN BOX and SUB BOX Field- suppliedMAIN BOX

CT12 CT22 CT3 F01 F02 F03 F04 F05 F06

Capacitor （Electrolysis）

AC current sensor SV1 21S4LEV2

CH 63LS TH9〜11 TH14TH1〜4

M MSCompressor motor Thermistor

Crankcase heater (for heating the compressor) Low pressure sensor4-way valveSolenoid valve （Injection circuit） High pressure switch63H1

Fuse Electronic expansion valve （Main circuit）〈ELB1,2〉〈51P〉〈52P〉

〈F2〉〈MP〉

Earth leakage breaker Overcurrent relay （Pump） Electromagnetic contactor （Pump）

Fuse Pump motor

DCLDC reactor 72CElectromagnetic relay （Inverter main circuit）

Electronic expansion valve （Injection）LEV1 SV2Solenoid valve （Hot gas circuit）〈H20〉Emergency signal (for extra heater) 〈H21〉Drain pan heaterFan motor 63HSHigh pressure sensor

R1Electrical resistanceR5

C100

Note 10． When cabtyre cable is used for the control cable wiring, use a separate cabtyre cable for the following wiring. Using the same cabtyre cable may cause malfunctions and damage to the unit.

(a) Optional remote controller wiring (b) No-voltage contact input wiring (c) No-voltage contact output wiring (d) Remote water temperature setting

（4 - 20 mA）

Note 9． Use a contact that takes 12 VDC 5 mA for no-voltage contact input. Note 11． The SW1 - SW3 switches indicated with can be set on site. Do not change the other SW1 - SW3 switch settings.

Note 5． The broken lines indicate the optional parts, ﬁeld-supplied parts, and ﬁeld work.

Note 4． When switching the capacity setting, remove the short-circuit wire on terminal 23 and 25. Note 6． Make sure to connect a pump interlock contact. A short-circuit may cause abnormal stop or malfunctions. Note 7． One of the following methods can be selected individually for how to input operation signal: to input from the optional remote controller or to input from the no-voltage contact. The preset temperature setting can be switched from the no-voltage contact or by setting time ranges.

Note 8． Leave a space of at least 5 cm between the low voltage external wiring (no-voltage contact input and remote controller wiring) and wiring of 100 V or greater. Do not place them in the same conduit tube or cabtyre cable as this will damage the circuit board. Inverter board

C100

SW1SW2SW3

OFFONOFFONOFFON1 2 3 4 5 6 7 8 9 10

1 2 3 4 5 6 7 8 9 10

24 23

T3T4

Representative Water temp. 2

°TH15 t CN406yellow Error reset ※4 Error typeError code (PCB ※3)Operation SW

Error code (PCB ※3) Inverter overheat protection faultHeat exchanger freeze up Incompatible combination of unitsRemote controller signal reception error 2Low-pressure sensor faultOutlet water temperature thermistor error （TH13 SUB Circuit）Inlet water temperature thermistor error （TH12 SUB Circuit）Outlet water temperature thermistor error （TH11 MAIN Circuit）

Air-side heat exchanger refrigerant temperature thermistor error (TH8 SUB Circuit） Shell temperature thermistor error （TH7 SUB Circuit）Compressor inlet temperature thermistor error （TH6 SUB Circuit）Discharge temperature thermistor error （TH5 SUB Circuit）

Control terminal block ② Control terminal block ①

Control board

Fan Inverter board Noise ﬁlter No-Voltage contact input

Option （COP priority/ Capacity priority）

H21 N

X21

H20 X20 X21

Drain pan heater

Emergency signal (for extra heater)

X20

X08

X09

（ON/OFF）

CN142C

Anti freeze Demand

Capacity mode

Mode change 2 Mode change 1

（ON/OFF）

Pump interlock Fan mode No-voltage contact output

SV2

Pump operation command output

7372717574

CN510 blueCN511

RunRun/Stop yellowCN512

tTH14TH2 CN422 black TO SUB BOX TB3

CN63LSredCN405blue

X01

CN402green

X02

CN404black

X03

CN401

CN502 CN501

CH pump error CN142B

blue

SV1

° 21S4

51P 52P ELB2

M 3〜

(−) MP 70 L2

(＋)

CN801 yellow

Capacity (frequency) control input 4〜

20 mA

LED2: CPU in operation

Transmission cable for multiple unit control Measurement terminal for maintenance (M-NET)

M (＋)

TH3 (−)

Representative

Water temp. 1 T2

72C

T1 CN63HS

LEV1 15 PL

1920

CNLVCblue 1112 L1

52P

Outdoor temp. 1 Shell Ref temp. 1

（ON/OFF） TB2

Flow switch

CN142D blue

LED1 LED3: Lit while energized blackCNAC2

M (0)

LEV2 ENTER

Optional remote controller connecting terminal (Non-polarized)

SWP2

Unit address setting SWP3

(0)SWU1 UP

(1） SWP1

SWU2 DOWN

SWU3 BA OFF

Water outlet temp. 1

LOCAL

SWS1SWS2 L3

CN142A black

CN408

CN2

F06AC250V3.15 A T

CN4CN332 blue

10' digit

Water inlet temp. 1

1' digit TB1

X06

(Normal/Error)

CN421black (Normal/Error) 62

X07 (Hot water/ Heating)

X04

CNLVA

° CN407red

°°°°°°ttttttt 63H1

red CNAC

REMOTE

63LS 63HS ELB1

X05

To SUB BOX TB4L1

CN102

MAMB

TH9TH4

CN3A

TH1TH10TH11 blue

Error display output

RB Control power circuit

Suction Ref temp. 1 Discharge Ref temp. 1

Operation display output (Heating Eco/ Heating)

Water temp. setting Analog input 4〜

20 mA

(coercion/ by ordinary)

Air hex Ref temp. 1

CNTYP1black

Z21

power supply 3N

〜

50Hz 380/400/415V

DC12V power supply 3N〜 50Hz 380/400/415V

Note 1． Single-dotted lines indicate ﬁeld wiring. Note 3． The symbols of the ﬁeld connecting terminals are as follows. : Terminal block : Connection by cutting the short circuit wire : Bullet terminal (ﬁeld supply: male φ3.96)

Note 2． Faston terminals have a locking function. Press the tab in the middle of the terminals to remove them. Check that the terminals are securely locked in place after insertion. ※6 ※6 ※9 27

5251

48474645 50

44 49

41 42

403938373635 −（）−（）−（）−（） −（）−（） Model setting errorDiscrete address, system error 262524 High-pressure sensor fault ※9 ※9※9※9※8 Communication error between the MAIN and SUB units Representative water temperature thermistor error （TH14, TH15) ACCT・DCCT sensor fault/Circuit faultVacuum protection faultShell temperature fault8 9Serial communication error 10 11 Open phase （T phase)12 Power supply fault13 Power supply frequency fault14 Active ﬁlter fault15 Inverter bus voltage fault16 17 Inverter overload protection fault18 IPM error (inclusive)/overcurrent relay trip19 Cooling fan fault20 21 22 23 Air-side heat exchanger refrigerant temperature thermistor error （TH4 MAIN Circuit）Shell temperature thermistor error (TH3 MAIN Circuit）Compressor inlet temperature thermistor error （TH2 MAIN Circuit）Discharge temperature thermistor error （TH1 MAIN Circuit）

Communication error between the MAIN and SUB units （Simple multiple unit control） Address overlap Remote controller signal reception error 1 Remote controller signal transmission error Incorrect setting of No.-of-connected-unit

Error reset ※4 28 29 30 34333231※9※5

No. ＳＷＳ１ THHS sensor/Circuit faultOutside temperature thermistor error (TH9)Unreset errors1 Power faliure2 Discharge temperature fault3 Water supply cutoﬀ (Flow switch)4 High pressure fault5Compressor ﬂooding 6 7Open phase

No.Error typeRemoteUnit side （PCB） Operation SWＳＷＳ１

RemoteUnit side （PCB） ※7 Inlet water temperature thermistor error （TH10 MAIN Circuit） TB2 TB1

72C

DCL

Inside of the control box (front view)

CAHV-P500YA-HPB ELECTRICAL WIRING DIAGRAM

※3． If an error occurs, a 4-digit error code, as explained in the table on the right, will blink on the board and remote controller display. ([Error code] and [Error source address] appear alternately on the remote controller display.) ※6． Depending on the system conﬁguration, the unit may come to an abnormal stop when the communication error lasts for 10 minutes or longer. In this case, the error needs to be reset by setting either SWS1 on the unit (PCB) or remote operation switch. ※7． This error code will appear when multiple errors occur that are reset in diﬀerent ways and when one or more of these errors have not been reset. This error can be reset by turning oﬀ and then back on the unit's power. ※8． Remove the cause of the error before resetting the error. Resuming operation without removing the cause may burst the heat exchanger. ※9. [Error code] and [Detail code] appear alternately. Refer to the Installation Manual for detail codes.※4． Deﬁnition of symbols in the "Error reset" column ・・・ Errors that can be reset regardless of the switch settings ・・・ Errors that can be reset if the remote reset setting on the unit is set to "Enable" (factory setting) Errors that cannot be reset if the remote reset setting on the unit is set to "Disable" ・・・ Errors that cannot be reset ・・・ Errors that will be automatically reset after the cause of the error is removed ※5． Power failure can be detected only when the switch setting "Automatic recovery after power failure" on the unit is set to "Disable." (The default setting is "Enable.")

Error Codes

Control Board Current water temperature ※2

CNDCPink

Z5 C3 C2F02 R01R02

F01 R03

Z1Z2 R34

C30 C32 C34 C36 black

F03 F04AC250V6.3A T blackwhite L

F01, F02, F03AC250V6.3 A T

DSA R35 CT3

white

R33 SC-L3

R30 redwhite

D1R04 R32

R06

CN2 C31

CN18Vblue U

C17

CN4red TB21CN1B

L1 CN1A

red

Noise Filter TB22

CN3 green

TB24

Fan motor (Heat exchanger) N

C33 TB23

IPM

FAN BoardF05DC700V4A T *3

M 3〜 black U

red DiodeBridge

2 72C

1 black SC-P2 C7C8 CT12L2

R5 U

LED1: Normal operation ＋ red

C35

DCL SC-L2

SC-P1 SC-U

CN1 black

C37

CN5Vyellow C1

C9C10

CN6

C100 LED1： Normal operation (lit) / Error (blink)

LED3: CPU in operation R1 CN4 CN2 SC-V

UIGBT CT22

CNINV SC-WSC-L1

CN21blue U

CNVDC

CN4 blue

C631 ゜ LED2: Error

R630 R631CN22red t Z3

CN5 R31

C6 CNTYPblack

C1 RSH1 THHSt

FT-PP N ゜

FT-N C4

＋ INV Board

＋

C630 ＋＋＋＋＋＋

3 red L3

THBOX −＋

V CN52Cred

MS 3〜

redwhiteblack Motor(Compressor)

CNTYP2

SW2-10: OFF SW3-9: OFF SW3-10: OFF SW3-7: OFFSW3-6: OFFSW3-5: OFFSW3-8: OFF High pressure/Low pressure

Display setting Preset water temperatureControl board displayControl board SW setting ※1 ※1． Select a display by setting the switches. ※2． The current water temperature is displayed according to the preset water temperature method.

SW3-5: ONSW3-6: OFF SW3-5: ONSW3-6: ON 51075104 51065105

1303

11030403 1104 4102 4106 4115 4121 5101 5102 5103

4220,4225 4230,4235 4240,4245 4250,4255 4260,4265

A000 A-P0 AC61 AFSA AHP1AdSH A471 68326830 683166066603 6607 7113,71177105 71306834 71026608

5114,5115 6600650051185117 5301,5305

5113511251115110511051095108 KC79B437H01

43 5 - 44 _indd

321321221112

2 1

3 2

5 4 2 1 4 3 1

2 4 3 2

3 1 1 1

5 4 2 3 1

2 1

541

1 23 4

12323 3 4 4

6 1

3 2 1

7 2

3 1

1 2

5 6

412

4 1

3 4 5 6

12 34

132

1 2

1221

7 5

34341234564623121 3 123456

2 1 3

1 13

2 23

6 1

2345761

L3L2L1

1 2 1

2 1 3

L3L2

321

312

THHSIGBT temperature Z21Function setting connector

SymbolExplanationSymbol explanation SUB BOX

CT12 CT22 CT3 F01 F02 F03 F04 F05 F06

Capacitor （Electrolysis）

AC current sensor SV1 21S4LEV2

CH 63LS TH12,13TH5〜8

M MSCompressor motor Thermistor

Crankcase heater (for heating the compressor) Low pressure sensor4-way valveSolenoid valve （Injection circuit） High pressure switch63H1

Fuse Electronic expansion valve （Main circuit）

DCLDC reactor 72C

Electronic expansion valve （Injection）LEV1 SV2Solenoid valve （Hot gas circuit）

Fan motor 63HSHigh pressure sensor

R1Electrical resistanceR5

C100 72C

R1 C100

SW1SW2SW3

OFFONOFFONOFFON1 2 3 4 5 6 7 8 9 10

1 2 3 4 5 6 7 8 9 10

1 2 3 4 5 6 7 8 9 10 ※9 27

5251

48474645 50

44 49

41 42

403938373635 −（）−（）−（）−（） −（）−（） 262524

※9 ※9※9※9

※8

8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

28 29 30 34333231※9※51 2 3 4 5 6 7

※7 ※6※6

CAHV-P500YA-HPB ELECTRICAL WIRING DIAGRAM

M-NET board TB1^DCL

Inside of the control box (front view) Inverter board Control board Noise ﬁlter

Fan Inverter board

TH13TH12TH5 ttt°°°°tt°

TH6TH763LS 63HS CN63HSCN63LSredCN401

CN407red

CNS2 yellow CN102 red CNIT

B S TP2

A A/M1B/M2

TB3 TP1

Transmission power board

red CN04 Transmission power circuit TB7

LED1: Power feeding 72C

Water inlet temp. 2

Discharge Ref temp. 2

Shell Ref temp. 2

Suction Ref temp. 2

Water outlet temp. 2

CN402green

MM CNLVACNLVCblueCN404blackTH8 t°Air hex Ref temp. 2

X01

X02 CN502 CN501

CHSV1 21S4

CNDCPink

X03 CN801

yellow

To MAIN BOXMA

LEV2LEV1

CN2

To MAIN BOX TB2

Control Board DOWN^UP ENTER

SWP1 SWP2SWP3 BA OFF LOCAL

SWU3SWU1SWU2 SWS1SWS2 blackCNAC2

X07

(1)(5) Unit adrress setting

(0)

CN102 yellowCNS2 CNITred

CNTYP1black

Z21 SV2

CN4CN332 blue

F06AC250V3.15A T

red CNAC

TB4

LED2: CPU in operation

63H1 REMOTE Control power circuit

LED1

blue CN511

※2 Error Codes Display setting

CN52C red

Z5 C3 C2F02 R01R02

F01 R03

Z1Z2 R34

C30 C32 C34 C36 black

F03 F04AC250V6.3A T blackwhite L

F01, F02, F03AC250V6.3A T

DSA R35 CT3

R05 white

R33 SC-L3

R30 redwhite

D1R04 R32

R06

CN2 C31

CN18Vblue U

CN5 red

C17

CN4red TB21CN1B

L1 CN1A

red

Noise Filter TB22

CN3 green

TB24Fan motor (Heat exchanger) N

C33 TB23

IPM

FAN Board F05DC700V4A T M 3〜 black U

red DiodeBridge

2 72C

1 black SC-P2 C7C8 CT12 L2

R5 U

LED1: Normal operation ＋ red

C35

DCL SC-L2

SC-P1 SC-U

CN1 black

C37

CN5Vyellow C1

C9C10

CN6

C100 LED1： Normal operation (lit)/ Error (blink)

LED3: CPU in operation R1 CN4 CN2 SC-VU

IGBT CT22

CNINV SC-WSC-L1

CN21blue U

CNVDC CN4blue

C631 ゜ LED2: Error

R630 R631

CN22red t Z3

CN5 R31C6

CNTYPblack

C1 RSH1 THHSt

FT-PP N ゜

FT-N C4

＋ INV Board

＋C630 ＋＋＋＋＋＋

3 red L3

THBOX −＋

V W

V UMS 3〜

whiteredblack

CNTYP2

Motor(Compressor)

MAIN BOX and SUB BOX Current water temperature ※2 High pressure/Low pressure Preset water temperatureControl board displayControl board SW setting ※1 SW2-10: OFF SW3-9: OFF SW3-10: OFF SW3-7: OFFSW3-6: OFFSW3-5: OFFSW3-8: OFF

SW3-5: ONSW3-6: OFF SW3-5: ONSW3-6: ON

Note 1． Single-dotted lines indicate ﬁeld wiring. Note 3． The SW1 - SW3 switches indicated with can be set on site. Do not change the other SW1 - SW3 switch settings. ※1． Select a display by setting the switches. ※2． The current water temperature is displayed according to the preset water temperature method.Note 2． Faston terminals have a locking function. Press the tab in the middle of the terminals to remove them. Check that the terminals are securely locked in place after insertion. 10' digit 1' digit LED3: Lit while energized ※3． If an error occurs, a 4-digit error code, as explained in the table on the right, will blink on the board and remote controller display. ([Error code] and [Error source address] appear alternately on the remote controller display.) ※4． Deﬁnition of symbols in the "Error reset" column ・・・ Errors that can be reset regardless of the switch settings ・・・ Errors that can be reset if the remote reset setting on the unit is set to "Enable" (factory setting) Errors that cannot be reset if the remote reset setting on the unit is set to "Disable" ・・・ Errors that cannot be reset ・・・ Errors that will be automatically reset after the cause of the error is removed ※6． Depending on the system conﬁguration, the unit may come to an abnormal stop when the communication error lasts for 10 minutes or longer. In this case, the error needs to be reset by setting either SWS1 on the unit (PCB) or remote operation switch. ※7． This error code will appear when multiple errors occur that are reset in diﬀerent ways and when one or more of these errors have not been reset. This error can be reset by turning oﬀ and then back on the unit's power. ※8． Remove the cause of the error before resetting the error. Resuming operation without removing the cause may burst the heat exchanger. ※9. [Error code] and [Detail code] appear alternately. Refer to the Installation Manual for detail codes.※5． Power failure can be detected only when the switch setting "Automatic recovery after power failure" on the unit is set to "Disable." (The default setting is "Enable.")

Operation SW

Error code (PCB ※3) Error reset ※4 ＳＷＳ１

No.Error typeRemoteUnit side （PCB） Operation SW Error code (PCB ※3) Error reset ※4 ＳＷＳ１

No.Error typeRemoteUnit side （PCB） Inverter overheat protection faultHeat exchanger freeze up Shell temperature thermistor error （TH7 SUB Circuit）Compressor inlet temperature thermistor error （TH6 SUB Circuit）Discharge temperature thermistor error （TH5 SUB Circuit）

Vacuum protection fault

Shell temperature faultSerial communication error Open phase （T phase) Power supply fault Power supply frequency fault Active ﬁlter fault Inverter bus voltage fault Inverter overload protection fault IPM error (inclusive)/overcurrent relay trip Cooling fan fault Air-side heat exchanger refrigerant temperature thermistor error （TH4 MAIN Circuit）Shell temperature thermistor error (TH3 MAIN Circuit）Compressor inlet temperature thermistor error （TH2 MAIN Circuit）Discharge temperature thermistor error （TH1 MAIN Circuit）

Unreset errors Power faliure Discharge temperature fault Water supply cutoﬀ (Flow switch) High pressure faultCompressor ﬂooding Open phase Incompatible combination of unitsRemote controller signal reception error 2Low-pressure sensor faultOutlet water temperature thermistor error （TH13 SUB Circuit）Inlet water temperature thermistor error （TH12 SUB Circuit）Outlet water temperature thermistor error （TH11 MAIN Circuit）

Air-side heat exchanger refrigerant temperature thermistor error (TH8 SUB Circuit） Model setting errorDiscrete address, system errorHigh-pressure sensor fault Communication error between the MAIN and SUB unitsRepresentative water temperature thermistor error （TH14, TH15) ACCT・DCCT sensor fault/Circuit fault Communication error between the MAIN and SUB units （Simple multiple unit control） Address overlap Remote controller signal reception error 1 Remote controller signal transmission error Incorrect setting of No.-of-connected-unitTHHS sensor/Circuit faultOutside temperature thermistor error (TH9) Inlet water temperature thermistor error （TH10 MAIN Circuit）

Electromagnetic relay （Inverter main circuit） R5 68326830 683166066603 6607 7113,71177105 71306834 71026608

5114,5115 6600650051185117 5301,5305

5113511251115110511051095108 51075104 51065105130311030403 1104 4102 4106 4115 4121 5101 5102 5103

4220,4225 4230,4235 4240,4245 4250,4255 4260,4265

A000 A-P0 AC61 AFSA AHP1AdSH A471 KC79B438H01

44

In document Hot Water Heat Pump Unit CAHV (сторінка 40-46)

[1] Wiring of main power supply and equipment capacity

Schematic Drawing of Wiring (Example) A: Switch (Breakers for wiring

and current leakage) B: Breakers for current leakage C: Outdoor unit

D: Pull box E: Indoor unit

Thickness of wire for main power supply, capacities of the switch and system impedance

1. Use dedicated power supplies for the unit. Ensure each units are wired individually.

2. Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and connections.

3. The wire size is the minimum value for metal conduit wiring. If the voltage drops, use a wire that is one rank thicker in diameter.

Make sure the power-supply voltage does not drop more than 10%.

4. Specific wiring requirements should adhere to the wiring regulations of the region.

5. Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord (design 60245 IEC57).

6. A switch with at least 3 mm contact separation in each pole shall be provided by the Air Conditioner installer.

7. Do not install a phase advancing capacitor on the motor. Doing so may damage the capacitor and result in fire.

The figure in the parentheses indicates the capacity necessary when the "Maximum capacity operation"

setting is selected.

Warning:

• Be sure to use specified wires for connections and ensure no external force is imparted to terminal connections. If connections are not fixed firmly, heating or fire may result.

• Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.

Caution:

• Some installation sites may require attachment of an earth leakage breaker for the inverter. If no earth leakage breaker is installed, there is a danger of electric shock.

• Do not use anything other than a breaker and fuse with the correct capacity. Using a fuse or wire of too large capacity may cause malfunction or fire.

Note:

• This device is intended for the connection to a power supply system with a maximum permissible system impedance shown in the above table at the interface point (power service box) of the user’s supply.

• The user must ensure that this device is connected only to a power supply system which fulfils the requirement above.

If necessary, the user can ask the public power supply company for the system impedance at the interface point.

S

(*2)

Model S

(MVA)

CAHV-P500YA-HPB 4.11

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Types of control cables

Control cable wiring

Remote controller cable

Size 0.3 - 1.25 mm² (Max. 200 m total)

Recommended

cable types CVV

M-NET cable between units *1

Size More than 1.25 mm² (Max. 120 m total)

Recommended

cable types Shielding wire CVVS, CPEVS or MVVS

External input wire size Min. 0.3 mm²

External output wire size 1.25 mm²

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[2] Cable connections

<1> Terminal Block Arrangement

To remove the front panel of the control box, unscrew the four screws and pull the panel forward and then down.

Control terminal block

Power supply terminal block TB2 Cable strap

Power wire Cable from another unit Transmission cable

Cable strap

Power supply terminal block

Important: Power supply cables larger than 60 mm² in diameter are not connectable to the power supply terminal block (TB2). Use a pull box to connect them.

<2> Installing the conduit tube

Punch out the knockout hole for wire routing at the bottom of the front panel with a hammer.

When putting wires through knockout holes without protecting them with a conduit tube, deburr the holes and protect the wires with protective tape.

If damage from animals is a concern, use a conduit tube to narrow the opening.

•

•

•

Burr Knockout hole

Burr Knockout hole

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CAHV-P500YA-HPB ELECTRICAL WIRING DIAGRAM

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CAHV-P500YA-HPB ELECTRICAL WIRING DIAGRAM

44