AirStage ASUA4TLAV1 Manual de instalación - Página 3

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2. ABOUT THIS PRODUCT

2.1. Precautions for using R410A refrigerant

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

tion 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

area. Touching the refrigerant directly can cause frostbite.

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

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

toxic gas.

2.2. Special tools for R410A

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

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

of R410A refrigerant is approximately 1.6 times higher than the 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

Contents of change for R22 tool

Pressure is huge and cannot be measured with a conventional

(R22) gauge. To prevent erroneous mixing of other refrigerants,

the diameter of each port has been changed.

Gauge manifold

It is recommended to use a gauge manifold with a high pressure

display range 30 in Hg to 768 psi (–0.1 to 5.3 MPa) and a low

pressure display range 30 in Hg to 551 psi (–0.1 to 3.8 MPa).

To increase pressure resistance, the hose material and base size

Charging hose

were changed.

A conventional (R22) vacuum pump can be used by installing a

vacuum pump adapter.

• A conventional vacuum pump can be used by installing a

Vacuum pump

vacuum pump adapter.

• Be sure that the pump oil does not back flow into the system.

Use one capable for vacuum suction of 5 Torr, –755 mm Hg

(–100.7 kPa).

Gas leakage

Special gas leakage detector for HFC refrigerant R410A.

detector

WARNING

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.

• The following installation parts are furnished. Use them as required.

• Keep the Installation Manual in a safe place and do not discard any other accessories

until the installation work has been completed.

Name and Shape

Q'ty

Operating

Manual

Installation

Manual

Wall hook bracket

Tapping screw (M4 × 25 mm)

(4/7/9

model)

(30/36

model)

Drain hose Insulation

(30/36

model)

Cloth tape

Cable tie

(30/36

model)

Air cleaning filter

(30/36

model)

Air cleaning filter frame

(30/36

model)

2.4. Optional parts

Descrip-

Model

tion

UTY-XWZXZC For output function (Output terminal / CNB01)

For control input function (Apply voltage terminal /

UTY-XWZXZB

CNA01)

External

UTY-XWZXZD For control input function (Dry contact terminal / CNA02)

connect kit

For forced thermostat off function (Apply voltage terminal

UTY-XWZXZ7

/ CNA03)

For forced thermostat off function (Dry contact terminal

UTY-XWZXZE

/ CNA04)

2.5. About unit of the length

All Fujitsu General products are manufactured to metric units and tolerances. United

States customary units are provided for reference only. In cases where exact dimensions

and tolerances are required, always refer to metric units.

WARNING

Application

(This book)

For indoor unit installation.

For wall hook bracket installation.

For installing drain hose

For indoor unit installation.

For transmission and remote controller

cable binding.

For installation, refer to the "CLEANING

AND CARE" in the operating manual.

Application

En-2