Product Specification; Installation Tools; Accessories - Fujitsu LM Series Installation 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-
professional or improper installation of the product might cause serious accidents
such as injury, water leakage, electric shock, or fi re. 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 fi re.
• If refrigerant leaks when you are working, ventilate the area. If the leaking refrigerant
is exposed to a direct fl ame, 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 unspecifi ed refrigerant in the
refrigerant lines. Excess pressure can cause a rupture.
• During installation, make sure that the refrigerant pipe is attached fi rmly before
you run the compressor. Do not operate the compressor under the condition of
refrigerant 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
specifi ed 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 fi re by poor connection, insuffi cient insulation or over current.
• 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.
• 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 fl ames, 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
exclusively.
• 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 unit must be installed by qualifi ed personnel with a capacity certifi cation of
handling refrigerant fl uids. 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
installation, 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 3 m, sound of the outdoor unit will be transferred
to the indoor unit, which will cause large operating sound or some abnormal sound.
• 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
technicians 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.
• 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.
• Do not touch the aluminum fi ns 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.
En-2
WARNING
CAUTION

2. PRODUCT SPECIFICATION

• 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.

2.1. Installation tools

To install a unit that uses R410A refrigerant, use dedicated tools and piping materials
that have been manufactured specifi cally 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 fi re.
Tool name
Pressure is high and cannot be measured with a conven-
tional (R22) gauge. To prevent erroneous mixing of other
refrigerants, the diameter of each port has been changed.
Gauge manifold
It is recommended to use 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.
To increase pressure resistance, the hose material and base
Charge hose
size were changed.(R410A)
A conventional vacuum pump can be used by installing a
Vacuum pump 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 0.0014 oz/33 ft (40 mg/10 m). Do not use copper pipes having a
collapsed, deformed or discolored portion (especially on the interior surface). Otherwise,
the expansion value or capillary tube may become blocked with contaminants.
As an air conditioner using R410A incurs pressure higher than when using R22, it is nec-
essary to choose adequate materials.
Thicknesses of copper pipes used with R410A are as shown in table.
Never use copper pipes thinner than those indicated in the table even if they are available
on the market.
Thicknesses of Annealed Copper Pipes
Nominal diameter (in) Outer diameter (mm)
1/4
3/8
1/2
5/8
3/4

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 fi re.
• The following installation parts are supplied. 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
Installation manual
(This manual)
Drain cap* 1
*1: It is not included in the cold region model.
One set of following parts are necessary installation of this product.
Additional materials
Connection pipe assembly Decorative tape
Connection cable Vinyl tape
Wall pipe Wall cap
WARNING
Change from R22 to R410A
Thickness [in(mm)]
6.35
9.52 0.031 (0.80)
12.70
15.88 0.039 (1.00)
19.05 0.047 (1.20)
WARNING
Q'ty Name and Shape
Drain pipe* 1
1
Cable tie
5
Saddle Tapping screws
Drain hose Sealant
M10 bold, nut
Q'ty
1
2