Pipe Requirement; Electrical Requirement; Liquid Pipe; Optional Parts - Fujitsu 9384203007-04 Manuel D'installation

Name and Shape
Cable tie (large)
Cable tie (medium)
Cable tie (small)
Drain hose insulation
Rail
Screw
Duct fl anges
Drain cap

2. 4. Pipe requirement

Refer to the installation manual of the outdoor unit for description of the length of con-
necting pipe or for diff erence of its elevation.
Model
24/30/36/48
• Use pipe with water-resistant heat insulation.
Install heat insulation around both the gas and liquid pipes. Failure to do so may cause
water leaks.
Use heat insulation with heat resistance above 248 °F (120 °C). (Reverse cycle model
only)
In addition, if the humidity level at the installation location of the refrigerant piping is
expected to exceed 70 %, install heat insulation around the refrigerant piping. If the
expected humidity level is 70 to 80 %, use heat insulation that is 9/16 in (15 mm) or
thicker and if the expected humidity exceeds 80 %, use heat insulation that is 13/16 in
(20 mm) or thicker. If heat insulation is used that is not as thick as specified, condensa-
tion may form on the surface of the insulation. In addition, use heat insulation with heat
conductivity of 0.045 W/(m·K) or less (at 68 °F (20 °C)).

2. 5. Electrical requirement

The indoor unit is powered from the outdoor unit. Do not power indoor unit from separate
power source.
Standard for electrical wiring and equipment diff ers in each country or region. Before
you start electrical working, confi rm related regulations, codes, or standards.
Cable
Connection cable
Cable Length: Limit voltage drop to less than 2%. Increase cable gauge if voltage drop is
2% or more.
Cable
Remote controller cable
En-4
9384203007-04.indb 4 9384203007-04.indb 4
Q'ty Description
4 For fi xing the heat insulation
For fi xing the remote controller
1
cable
For fi xing the remote controller
1
cable
Insulates the drain hose and
1
vinyl hose
For holding the coil
2
Screw for installing the rail
16
For duct installation
2
For drain pipe
2
CAUTION
Diameter [in (mm)]
Gas pipe

Liquid pipe

5/8 (15.88) 3/8 (9.52)
CAUTION
WARNING
Conductor size
Remarks
(AWG)
3Wire+Earth (Ground),
AWG 14
1Ø 208/230V
Conductor size
Remarks
(AWG)
Non-polar 2-wired,
AWG 22 to 16
twisted pair

2. 6. Optional parts

Refer to each installation manual for the method of installing optional parts.
Parts name Model No.
Wired remote controller UTY-RNRUZ*
UTY-RSRY
Simple remote controller
UTY-RHRY
IR receiver unit UTY-LBTUM
Remote sensor UTY-XSZX
Network convertor UTY-VTGX
Thermostat convertor UTY-TTRX
WLAN interface UTY-TFSXZ2
External input and output
UTY-XCSX
PCB
Wire kit UTY-XWZXZJ
External input and output
UTZ-GXRA
PCB box
External connect kit UTY-XWZXZG
For the electric heater and fi lter base, refer to the Submittal sheet.

2. 7. Selecting the pipe material

CAUTION
• Do not use existing pipes from another refrigeration system or refrigerant.
• Use pipes that have clean external and internal sides without any contamination which
may cause trouble during use, such as sulfur, oxide, dust, cutting waste, oil, or water.
• It is necessary to use seamless copper pipes.
Material : Phosphor deoxidized seamless copper pipes
It is desirable that the amount of residual oil is less than 0.04 oz/100 ft (40 mg/10 m).
• Do not use copper pipes that have a collapsed, deformed, or discolored portion (es-
pecially on the interior surface). Otherwise, the expansion valve or capillary tube may
become blocked with contaminants.
• Improper pipe selection will degrade performance. As an air conditioner using R410A
incurs pressure higher than when using conventional (R22) 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 those indicated in the table even if they are 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)
Application
For air conditioner operation
(2-wired type)
For air conditioner operation
(2-wired type)
For air conditioner operation
Room temperature sensor
For air conditioner operation
For air conditioner operation
For wireless LAN control
For connecting external
devices
For connecting External input
and output PCB
For installing the External input
and output PCB
For control output port
Thickness [in (mm)]
0.032 (0.80)
0.032 (0.80)
0.032 (0.80)
0.039 (1.00)
0.039 (1.20)
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