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(a) Top view

Hose Band

5 to 10 mm

20 mm

Make sure there are no gaps

NOTE: Check for drainage

Pour about 1 liter of water from

the position shown in the dia-

gram or from the airflow outlet

to the dew tray. Check for any

abnormalities such as strange

noises and whether the drain

pump functions normally.

6. ELECTRICAL WIRING

Electrical work must be performed in accordance with this Manual by a person certified

under the national or regional regulations. Be sure to use a dedicated circuit for the unit.

An insufficient power supply circuit or improperly performed electrical work can cause

serious accidents such as electric shock or fire.

Before starting work, check that power is not being supplied to the all units.

For wiring, use the prescribed type of cables, connect them securely, making sure that

there are no external forces of the cables applied to the terminal connections.

Improperly connected or secured cables can cause serious accidents such as overheat-

ing the terminals, electric shock, or fire.

Securely install the electrical box cover on the unit.

An improperly installed electrical box cover can cause serious accidents such as electric

shock or fire through exposure to dust or water.

Install sleeves into any holes made in the walls for wiring. Otherwise, a short circuit

could result.

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

facturer. Improper connections, insufficient insulation, or exceeding the allowable current

can cause electric shock or fire.

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

ing. Improper connections, insufficient insulation, or exceeding the allowable current can

cause electric shock or fire.

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 fire.

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 fire

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 firmly to the terminal board. Imperfect installation may

cause a fire.

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

agent or similarly qualified persons in order to avoid a hazard.

(b) Side view

VP25

Applying area

of adhesive

35 mm

Gauge line

4 mm or less

(d) Hose opening view

Wind the attached heat insulation

around the hose band

Make sure the

alignment is on top

WARNING

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 earth (ground) for the indoor and outdoor units and peripheral devices.

• Cut power (breaker) off.

• Touch metal part of the indoor units 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.

• Specifications 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.

Breaker should be installed at every refrigerant system. Do not use a breaker in a different

refrigerant system.

Refer to the table for the breaker specifications 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

MFA

AUXM018GLAH

0.24 A

AUXM024GLAH

0.29 A

AUXM030GLAH

0.50 A

AUXK018GLAH

0.41 A

AUXK024GLAH

0.41 A

20 A

AUXK030GLAH

0.46 A

AUXK034GLAH

0.46 A

AUXK036GLAH

0.57 A

AUXK045GLAH

0.81 A

AUXK054GLAH

1.04 A

B. Earth leakage breaker requirements

Breaker capacity

30 mA, 0.1 sec or less

100 mA, 0.1 sec or less

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

*2: 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 specifications

Recommended

cable size (mm²)

Power supply cable

2.5

Transmission cable

0.33

Remote controller

0.33 to 1.25

cable (2-wire type)

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

CAUTION

230 V

198 to 264 V (50 Hz)

198 to 253 V (60 Hz)

• MCA: Minimum Circuit Ampacity

• MFA: Maximum Fuse Ampacity

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.

Maximum connectable "indoor units" or

"indoor units + RB units" *1

44 or less *2

45 to 148

Cable type

Remark

Type245 IEC57

2 Cable + earth (ground)

or equivalent

22 AWG LEVEL 4 (NEMA)

LONWORKS

non-polar 2 core, twisted pair

compatible cable

solid core diameter 0.65 mm

Sheathed PVC

Non-polar 2 core, twisted

cable *1

pair

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