Fujitsu 24LMAS1 Installation Manual - Page 2

Browse online or download pdf Installation Manual for Air Conditioner Fujitsu 24LMAS1. Fujitsu 24LMAS1 17 pages. Outdoor unit

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When Connecting Refrigerant Tubing

• Keep all tubing runs as short as possible.

• Use the flare method for connecting tubing.

• Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before

connecting them, then tighten the nut with a torque wrench for a leak-free connection.

• Check carefully for leaks before opening the refrigerant valves.

NOTE:

Depending on the system type, liquid and gas lines may be either narrow or wide. There-

fore, to avoid confusion the refrigerant tubing for your particular model is specified as

either "small" or "large" rather than as "liquid" or "gas".

When Servicing

• Turn the power OFF at the main circuit breaker panel before opening the unit to check or

repair electrical parts and wiring.

• Keep your fingers and clothing away from any moving parts.

• Clean up the site after you finish, remembering to check that no metal scraps or bits of

wiring have been left inside the unit being serviced.

• After installation, explain correct operation to the customer, using the operation manual.

• To avoid getting an electric shock, never touch the electrical components soon after

the power supply has been turned off. After turning off the power, always wait

10 minutes or more before you touch the electrical components.

• Installation of this product must be done by experienced service technicians or

professional installers only in accordance with this manual. Installation by non-pro-

fessional or improper installation of the product might cause serious accidents such

as injury, water leakage, electric shock, or fire. If the product is installed in disregard

of the instructions in this manual, it will void the manufacturer's warranty.

• Do not turn on the power until all work has been completed. Turning on the power

before the work is completed can cause serious accidents such as an electric shock

or a fire.

• If refrigerant leaks when you are working, ventilate the area. If the leaking refrigerant

is exposed to a direct flame, it may produce a toxic gas.

• Installation must be performed in accordance with regulations, codes, or standards

for electrical wiring and equipment in each country, region, or the installation place.

• Do not use this equipment with air or any other unspecified refrigerant in the refriger-

ant lines. Excess pressure can cause a rupture.

• During installation, make sure that the refrigerant pipe is attached firmly before you

run the compressor. Do not operate the compressor under the condition of refriger-

ant piping not attached properly with 2-way or 3-way valve open. This may cause

abnormal pressure in the refrigeration cycle that leads to rupture and even injury.

• When installing or 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 appropriate working of the air conditioner, install it as written in this manual.

• To connect indoor unit and outdoor unit, or indoor unit and branch box, use air

conditioner piping and cables available through your local distributor. This manual

describes proper connections using such installation set.

• Do not modify power cable, use extension cable or branch wiring. Improper use may

cause electric shock or fire by poor connection, insufficient insulation or over current.

• Do not purge the air with refrigerants but use a vacuum pump to vacuum the installa-

tion.

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

• Do not use means to accelerate the defrosting process or to clean, other than those

recommended by the manufacturer.

• The appliance shall be stored in a room without continuously operating ignition

sources (for example: open flames, an operating gas appliance or an operating

electric heater).

• Do not pierce or burn.

• Be aware that refrigerants may not contain an outdoor.

• 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 exclu-

sively.

• Do not modify this unit, such as opening a hole in the cabinet.

• 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 2-way

or 3-way valve open. This may cause abnormal pressure in the refrigeration cycle

that leads to rupture and even injury.

• Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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

cal, 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.

En-2

WARNING

• 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 at the place of installa-

tion, and the instructions provided by the manufacturer.

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

alone or be installed with non-authorized device by the manufacturer.

• When installing pipes shorter than 10 ft (3 m), sound of the outdoor unit will be trans-

ferred to the indoor unit, which will cause large operating sound or some abnormal

sound.

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

bined 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 techni-

cians for repairing.

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

for disconnection and reinstallation 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. Condensation dripping from the unit might get them wet, and may cause

damage or malfunction of your property.

2. PRODUCT SPECIFICATION

2.1. Installation tools

• 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.

• Do not use a vacuum pump or refrigerant recovery tools with a series motor, since it

may ignite.

Tool name

Gauge manifold

Pressure is high and cannot be measured with a conventional

(R22) gauge. To prevent erroneous mixing of other refriger-

ants, the diameter of each port has been changed.

It is recommended the gauge with seals -30 inHg to 768 psi

(-0.1 to 5.3 MPa) for high pressure. -30 inHg to 551 psi (-0.1

to 3.8 MPa) for low pressure.

Charge hose

To increase pressure resistance, the hose material and base

size were changed. (R410A)

Vacuum pump

A conventional vacuum pump can be used by installing a

vacuum pump adapter.

(Use of a vacuum pump with a series motor is prohibited.)

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 0.004 oz/100 ft (40 mg/10 m). Do not use copper pipes having a collapsed,

deformed or discolored portion (especially on the interior surface). Otherwise, the expan-

sion 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.

2.2. 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.

CAUTION

WARNING

Contents of change

WARNING