AirStage ARXB12GALH Manuel d'installation - Page 11

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Use the included connection cables and power cables or ones specified by the

manufacturer. Improper connections, insufﬁ cient insulation, or exceeding the allowable

current can cause electric shock or ﬁ re.

Do not modify the power cables, use extension cables, or use any branches in the

wiring. Improper connections, insufﬁ cient insulation, or exceeding the allowable current

can cause electric shock or ﬁ re.

Match the terminal block numbers and connection cable colors with those of the

outdoor unit (or RB unit). Erroneous wiring may cause burning of the electric parts.

Securely connect the connection cables to the terminal board. In addition, secure the

cables with wiring holders. Improper connections, either in the wiring or at the ends of

the wiring, can cause a malfunction, electric shock, or ﬁ re.

Always fasten the outside covering of the connection cable with the cable clamp. (If the

insulator is chafed, electric discharge may occur.)

Install an earth leakage breaker. In addition, install the earth leakage breaker so that

the entire AC main power supply is cut off at the same time. Otherwise, electric shock

or ﬁ re could result.

Always connect the earth (ground) cable.

Improper earthing (grounding) work can cause electric shocks.

Install the remote controller cables so as not to be direct touched with your hand.

Perform wiring work in accordance with standards so that the air conditioner can be

operated safely and positively.

Connect the connection cable ﬁ rmly to the terminal board. Imperfect installation may

cause a ﬁ re.

If the supply cable is damaged, it must be replaced by the manufacturer, its service

agent or similarly qualiﬁ ed persons in order to avoid a hazard.

Earth (Ground) the unit.

Do not connect the earth (ground) cable to a gas pipe, water pipe, lightning rod, or a

telephone earth (ground) cable.

Improper earthing (grounding) may cause electric shock.

Do not connect power supply cables to the transmission or remote controller terminals,

as this will damage the product.

Never bundle the power supply cable and transmission cable, remote control cable

together.

Separate these cable by 50 mm or more.

Bundling these cables together will cause miss operation or breakdown.

When handling PCB, static electricity charged in the body may cause malfunction of

the PCB. Follow the cautions below:

• Establish an earthing (grounding) for the indoor and outdoor units and peripheral

devices.

• Cut power (breaker) off.

• Touch metal part of the indoor unit for more than 10 seconds to discharge static

electricity charged in the body.

• Do not touch terminals of parts and patterns implemented on PCB.

6.1. Electrical requirement

Voltage rating

Operating range

• Select the power cable type and size in accordance with relevant local and national

regulations.

• Speciﬁ cations for local wiring power cord and branch wiring are in compliance with local

code.

• Max. wire length: Set a length so that the voltage drop is less than 2%. Increase the

wire diameter when the wire length is long.

Refer to the table for the breaker speciﬁ cations of each installation condition. Perform the

power crossover wiring within the range of the same refrigerant system. When the crossover

wiring is done, make a connection for indoor units to satisfy conditions A and B below.

A. Current breaker requirements

Model

MCA

ARXB07GALH

0.29 A

ARXB09GALH

0.30 A

ARXB12GALH

0.36 A

ARXB14GALH

0.48 A

ARXB18GALH

0.51 A

MCA: Minimum Circuit Ampacity

MFA: Main Fuse Ampacity

CAUTION

230 V

198 to 264 V

MFA

20 A

When the power crossover wiring is done, make it so that the total of the MCA of the

connected RB units and indoor units does not exceed the 15 A. For RB unit MCA, refer to

the RB unit installation manual.

If the capacity of connected RB units and indoor units exceeds the upper limit, either add

breakers or use a breaker with a greater capacity.

B. Earth leakage breaker requirements

Breaker capacity

30 mA, 0.1 sec or less

100 mA, 0.1 sec or less

* Heat pump type: indoor units, Heat recovery type: indoor units and RB units.

** If the total number of units connected to the breaker exceeds 44, either add a 30mA

breaker, or use breakers with a greater capacity.

6.1.1. Cable speciﬁ cations

Follow the speciﬁ cations below for the power supply, transmission and remote controller

cable.

Recommended

cable size

(mm

)

Power supply

Type245 IEC57 or

2.5

cable

equivalent

Transmission

LONWORKS

0.33

cable

compatible cable

Remote controller

cable

0.33 to 1.25

Sheathed PVC cable* Non polar 2 core

(2-wire type)

Remote controller

cable

0.33

Sheathed PVC cable* Polar 3 core

(3-wire type)

*: Use shielded cable in accordance with local rules for remote controller cable.

6.2. Wiring method

EXAMPLE

Outdoor unit or RB unit *1

Transmission

Indoor unit

Remote

Transmission

control

Power supply

Breaker

Power supply

Remote controller

(Master)

*1: When connecting to the Heat Recovery System, refer to the installation manual of

the RB unit.

*2: Earth (Ground) the remote controller if it has a earth (ground) cable.

*3: When connecting the 2-wire type remote controller, Y3 is not used.

(Crossover wiring of power supply)

Indoor unit

Power supply

Pull box

Breaker

Power supply

* Earth (Ground) the remote controller if it has an earth (ground) wire.

Connect the earth (ground) wire of the remote controller to the earth (ground) terminal

of transmission.

* Maximum connectable "indoor units" or

"indoor units + RB units"

44 or less **

45 to 128

Cable type

Remark

1ø 50 Hz 198 to 264 V

2 Cable + earth (ground)

22 AWG LEVEL 4

(NEMA) non-polar 2 core,

twisted pair solid core

diameter 0.65 mm

Indoor unit

Breaker

Remote controller

(Slave)

Indoor unit

Power supply

Pull box

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