Fujitsu 30RLXEH Installation Manual - Page 3

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When installing and relocating the air conditioner, do not mix gases other than the

specified refrigerant (R410A) to enter the refrigerant cycle.

If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to an

abnormally high value and cause rupture, injury, etc.

For the air conditioner to work appropriately, install it as written in this manual.

To connect the indoor unit and outdoor unit, use air conditioner piping and cables

available locally as standard parts.

This manual describes proper connections using such installation set.

Do not use an extension cable.

Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation.

There is no extra refrigerant in the outdoor unit for air purging.

Using the same vacuum pump for different refrigerants may damage the vacuum pump

or the unit.

Use a clean gauge manifold, vacuum pump and charging hose for R410A exclusively.

During the pump-down operation, make sure that the compressor is turned off before

you remove the refrigerant piping.

Do not remove the connection pipe while the compressor is in operation with 3-way

valve open. This may cause abnormal pressure in the refrigeration cycle that leads to

rupture and even injury.

Dispose of the packing materials safely. Tear and dispose of the plastic packing bags

so that children cannot play with them. There is the danger of suffocation if children play

with the original plastic bags.

This appliance is not intended for use by persons (including children) with reduced

physical, sensory or mental capabilities, or lack of experience and knowledge, unless

they have been given supervision or instruction concerning use of the appliance by a

person responsible for their safety. Children should be supervised to ensure that they

do not play with the appliance.

Indicates a potentially hazardous situation that may result in minor

CAUTION

or moderate injury or damage to property.

This unit must be installed by qualified personnel with a capacity certification of handling

refrigerant fluids. Refer to regulation and laws in use on installation place.

Install the unit by following local codes and regulations in force in the place of

installation, and the installation instructions of the manufacturer.

This unit is part of a set constituting an air conditioner. The unit must not be installed

alone or be installed with device not authorized by the manufacturer.

Always use a separate power supply line protected by a circuit breaker operating on all

wires with a distance between contact of 3mm for this unit.

To protect the persons, earth (ground) the unit correctly, and use the power cable

combined with an Earth Leakage Circuit Breaker (ELCB).

The units are not explosion proof, and therefore should not be installed in explosive

atmosphere.

This unit contains no user-serviceable parts. Always consult experienced service

technician for repairing.

When moving or relocating the air conditioner, consult experienced service technicians

for disconnection and installation of the unit.

Children should be monitored to ensure they do not play with the device.

Do not touch the aluminum fins of heat exchanger built-in the indoor or outdoor unit to

avoid personal injury when you install or maintain the unit.

Do not place any other electrical products or household belongings under indoor unit or

outdoor unit. Dripping condensation from the unit might get them wet, and may cause

damage or malfunction of your property.

2. ABOUT THIS PRODUCT

2.1. Precautions for using R410A refrigerant

Do not introduce any substance other than the prescribed refrigerant into the

refrigeration cycle. If air enters the refrigeration cycle, the pressure in the refrigeration

cycle will become abnormally high and cause the piping to rupture.

If there is a refrigerant leak, make sure that it does not exceed the concentration limit.

If a refrigerant leak exceeds the concentration limit, it can lead to accidents such as

oxygen starvation.

Do not touch refrigerant that has leaked from the refrigerant pipe connections or other

areas. Touching the refrigerant directly can cause frostbite.

If a refrigerant leak occurs during operation, immediately vacate the premises and

thoroughly ventilate the area. If the refrigerant comes in contact with a flame, it produces

a toxic gas.

The basic installation work procedures are the same as conventional refrigerant models.

However, pay careful attention to the following points:

WARNING

• Since the working pressure is 1.6 times higher than that of conventional refrigerant

(R22) models, some of the piping and installation and service tools are special. (See

the table below.)

Especially, when replacing a conventional refrigerant (R22) model with a new

refrigerant R410A model, always replace the conventional piping and flare nuts with

the R410A piping and flare nuts.

• Models that use refrigerant R410A have a different charging port thread diameter

to prevent erroneous charging with conventional refrigerant (R22) and for safety.

Therefore, check beforehand. [The charging port thread diameter for R410A is

1/2-20 UNF.]

• Be careful that foreign matter (oil, water, etc.) does not enter the piping than with

refrigerant models. Also, when storing the piping, securely seal the openings by

pinching, taping, etc.

• When charging the refrigerant, take into account the slight change in the composition

of the gas and liquid phases. And always charge from the liquid phase where

refrigerant composition is stable.

2.2. Special tools for R410A refrigerant

To install a unit that uses R410A refrigerant, use dedicated tools and piping materials

that have been manufactured specifically for R410A use. Because the pressure of

R410A refrigerant is approximately 1.6 times higher than R22, failure to use dedicated

piping material or improper installation can cause rupture or injury. Furthermore, it can

cause serious accidents such as water leakage, electric shock, or fire.

Tool name

Gauge manifold

Pressure is high and cannot be measured with a conventional

gauge. To prevent erroneous mixing of other refrigerants, the

diameter of each port has been changed.

It is recommended the gauge with seals –0.1 to 5.3 MPa (-1 to

53 bar) for high pressure. –0.1 to 3.8 MPa (-1 to 38 bar) for low

pressure.

Charging hose

To increase pressure resistance, the hose material and base

size were changed.

Vacuum pump

A conventional vacuum pump can be used by installing a

vacuum pump adapter.

Gas leakage detector Special gas leakage detector for HFC refrigerant R410A.

Copper pipes

It is necessary to use seamless copper pipes and it is desirable that the amount of residual

oil is less than 40 mg/33ft (10m). Do not use copper pipes having a collapsed, deformed

or discolored portion (especially on the interior surface). Otherwise, the expansion valve

or capillary tube may become blocked with contaminants.

As an air conditioner using R410A incurs pressure higher than when using conventional

refrigerant, it is necessary to choose adequate materials.

Thicknesses of copper pipes used with R410A are as shown in the table. Never use

copper pipes thinner than that in the table even when it is available on the market.

Thicknesses of Annealed Copper Pipes (R410A)

Pipe outside diameter [in. (mm)]

1/4 (6.35)

3/8 (9.52)

1/2 (12.70)

5/8 (15.88)

3/4 (19.05)

2.3. Accessories

For installation purposes, be sure to use the parts supplied by the manufacturer or other

prescribed parts. The use of non-prescribed parts can cause serious accidents such as

the unit falling, water leakage, electric shock, or fire.

Following installation parts are supplied. Use them as required.

Keep this manual in a safe place, and do not discard any other accessories until the

installation work has been completed.

Name and shape

Installation

manual

Cable tie with clip

Conduit plate

WARNING

Changes

Thickness [in. (mm)]

0.032 (0.80)

0.039 (1.00)

0.047 (1.20)

WARNING

Q'ty

Description

This manual

For binding power supply cable and

connection cable

To fix Conduit tube

En-3