AirStage ASUA9RLAV Installationshandbuch - Seite 7

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4.4. Installing heat insulation

After checking for gas leaks (refer to the Installation Manual of the outdoor unit), perform

this section.

Install heat insulation around both the large (gas) and small (liquid) pipes. Failure to do

so may cause water leaks.

After checking for gas leaks, insulate by wrapping insulation around the 2 parts (gas and

liquid) of the indoor unit coupling, using the Coupler heat insulation.

After installing the Coupler heat insulation, wrap both ends with vinyl tape so that there

is no gap.

Coupler heat insulation

Body

Be sure to overlap the

insulation

Must ﬁ t tightly against body without any gap.

5. ELECTRICAL WIRING

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

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

An insufﬁ cient power supply circuit or improperly performed electrical work can cause

serious accidents such as electric shock or ﬁ re.

Before starting work, check that power is not being supplied to the indoor unit and

outdoor unit.

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

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

Improperly connected or secured wires can cause serious accidents such as overheating

the terminals, electric shock, or ﬁ re.

Securely install the electrical box cover on the unit.

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

shock or ﬁ re 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 speciﬁ ed 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. 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.)

For U.S.A. and Canada:

When installing this system in high humidity locations, install using ground fault equipment

breakers (often referred to in other countries as an ELCB earth leakage current breaker) to

reduce the risk of leaking current which result in electric shock or potential ﬁ re.

For others:

Install an earth (ground) leakage breaker. In addition, install the earth (ground) 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 cord is damaged, it must be replaced by the manufacturer, its service agent

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

CAUTION

No gap

Coupler heat

insulation

CAUTION

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 1-31/32 in. (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 and outdoor 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.

5.1. 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.

• Select the correct cable type and size according to the country or region's regulations.

• 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 cross-

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

A. Current breaker requirements

Model

ASUA7RLAV

ASUA9RLAV

ASUA12RLAV

ASUA14RLAV

MCA: Minimum Circuit Ampacity

MOP: Maximum Overcurrent Protection

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

connected indoor equipment does not exceed the 15 A.

B. Earth leakage breaker requirements

Breaker capacity

30 mA, 0.1 sec or less

100 mA, 0.1 sec or less

200 mA, 0.1 sec or less

If the number of units of connected indoor unit exceeds the upper limit, either add break-

ers or use a breaker with large capacitance.

5.1.1. Transmission and remote controller wiring speciﬁ cations

Follow the speciﬁ cations below for the transmission and remote controller cable.

Cable size

Transmission

22 AWG

non-polar 2core, twisted pair solid

cable

(0.33 mm²)

core diameter 1/32 in. (0.65mm)

Remote

22 AWG

controller cable

(0.33 mm²)

CAUTION

208/230 V

187 to 253 V

MCA

MOP (Fuse capacity)

0.21 A

0.22 A

20 A

0.24 A

0.36 A

Maximum connectable indoor unit

39 (Upper limit of the refrigerant system)

Wire type

Remarks

LEVEL 4 (NEMA)

LONWORKS

compatible cable

Polar 3 core

Sheathed PVC cable

Twisted pair

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