Warning; Combinations; Optional Parts; Installation Work - Fujitsu AJY090LELDHS Installation Manual

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Table Of Contents

Table of Contents

2.4. Combinations

The number of indoor units that can be connected are as follows:

Outdoor unit cooling

Model

capacity [kW]

AJ*072LELDH

22.4

AJ*090LELDH

28.0

AJ*108LELDH

33.5

AJ*126LELDH

40.0

AJ*144LELDH

45.0

AJ*162LELDH

50.0

*1: The conditions may differ depending on the connected indoor unit. For detailed infor-

mation, refer to the Design and Technical Manual.

2.5. Optional parts

The following parts are optional parts specific to R410A refrigerant.

Do not use parts other than those listed below.

2.5.1 Separation tube kit and Header

Separation tube

Total cooling ca-

and header uses

pacity of indoor

the following parts.

unit (kw)

A header is used

19.6 or less

for connecting the

indoor units.

28.0 or less

28.1 or more

2.5.2 External connect kit

Model

For External input (CN131, CN132, CN133, CN134)

UTY-XWZXZ6

For External output (Error status / CN136) (Operation status / CN137)

UTY-XWZXZF

For External input (CN135)

UTY-XWZXZ9

For External output (Base pan heater / CN115)

3. INSTALLATION WORK

Obtain the approval of the customer when selecting the location of installation and install-

ing the main unit.

3.1. Selecting an installation location

Install the unit in a location that can withstand its weight, and where it will not topple or

fall.

Calculate the proper refrigerant concentration if you will be installing it in an enclosed

location.

Total amount of additional refrigerant

charge in refrigerant facility (kg)

Capacity of smallest room where unit

is installed (m³)

If the results of the calculation exceed the concentration limit, increase the room surface

area or install a ventilation duct.

Do not tilt the outdoor unit more than 0.3 degrees. However, do not install the unit with it

tilted towards the side containing the compressor.

Install this unit in a location with good ventilation.

If the unit must be installed in an area within easy reach of the general public, install as

necessary a protective fence or the like to prevent their access.

Install the unit in an area that would not inconvenience your neighbors, as they could be

affected by the airflow coming out from the outlet, noise, or vibration.

If it must be installed in proximity to your neighbors, be sure to obtain their approval.

If the unit is installed in a cold region that is affected by snow accumulation, snow fall, or

freezing, take appropriate measures to protect it from those elements.

To ensure a stable operation, install inlet and outlet ducts.

Install the unit in an area that would not cause problems even if the drain water is

discharged from the unit. Otherwise, provide drainage that would not affect people or

objects.

Install the unit in an area that has no heat sources, vapors, or the risk of the leakage of

flammable gas in the vicinity.

Install the unit in an area that is away from the exhaust or vent ports that discharge

vapor, soot, dust, or debris.

Install the indoor unit, outdoor unit, power supply cable, transmission cable and remote

control cable at least 1 meter away from a television or radio.

The purpose of this is to prevent TV reception interference or radio noise. (Even if they

are installed more than 1 meter apart, you could still receive noise under some signal

conditions.)

Keep the length of the pipes of the indoor and outdoor units within the allowable range.

For maintenance purposes, do not bury the pipes.

En-3

Connectable total

Maximum connect-

indoor unit capacity

able indoor units

ratio [%]

50 to 150 (*1)

CAUTION

Header

Separation

tube

3-6 Branches

3-8 Branches

UTP-AX054A

UTR-H0906L

UTR-H0908L

UTP-AX090A

UTP-AX180A UTR-H1806L

UTR-H1808L

Usage

WARNING

Refrigerant concentration (kg/m³)

≤

(0.42 kg/m³)

CAUTION

3.2. Drain processing

Perform drain work in accordance with this manual, and ensure that the drain water is

properly drained. If the drain work is not carried out correctly, water may drip down from

the unit, wetting the furniture.

When the outdoor temperature is 0°C or less, do not use the accessory drain pipe and

drain cap. If the drain pipe and drain cap are used, the drain water in the pipe may

freeze in cold climate.

• If you are installing the drain pipe and drain caps,

provide a working space under the base of the

outdoor unit.

• As the drain water flows out of the outdoor unit

during heating operation, install the drain pipe

and connect it to a commercially available 16 mm

hose.

• When installing the drain pipe, plug all the holes

other than the drain pipe mounting hole in the

bottom of the outdoor unit with putty so there is no

water leakage.

Air

Drain cap mounting

hole × 9

3.3. Space requirement

Provide sufficient space requirement, such as transportation route, maintenance space,

ventilation space, refrigerant piping space, and passageways.

Pay attention to the specifications of the space requirement as shown in the figure. If

the unit is not installed according to specifications, it may cause short circuit or poor

performance. The unit may be prone to lapse into non-operation due to high pressure

protection.

When there is a wall in front of the unit, provide a space of 500 mm or more as mainte-

nance space. When there is a wall at the right side of the unit, provide a space of 100

mm or more.

An outdoor temperature of 35°C (DB) in air-conditioned operation is assumed for the

space requirement in this item. If the outdoor temperature exceeds 35°C (DB) and

the outdoor unit is operating at a load exceeding its rated ability, provide a larger inlet

space.

If you are installing more outdoor units than indicated here, ensure sufficient space or

consult your distributing agent as it may affect the performance due to short circuit and

This manual is also suitable for:

Ajy108leldhs