Pipe Installation; Selecting The Pipe Material - Fujitsu Airstage ARXB07GALH Manual De Instalación

3.3B.2. INSTALLING THE HANGERS
• Install the hangers (Accessories) to the unit (4 places).
3.3B.3. DRILLING HOLES FOR BOLTS AND INSTALLING
THE BOLTS
• Drilling position for bolts.
AR07/09 models
AR12/14/18 models
Secure with an M10 anchor bolts. If securing the unit to the fl oor is diffi cult, fi rst build a
stand or platform.
• Bolt dimensions
M10
3.3B.4. INSTALL THE UNIT
• Fix the unit.
Install the unit and fasten with special nut B.
9374342280-01_IM.indb Sec1:6 9374342280-01_IM.indb Sec1:6
Hanger
596 mm
886 mm
CAUTION
30 to 50 mm
Special nut B
(Accessories)
Unit
3.3B.5. LEVELING
Base horizontal and vertical direction leveling on top of the unit.
Left drain port
If using the right drain port
Good
If using the left drain port
Prohibited

4. PIPE INSTALLATION

CAUTION
Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with
refrigerant R410A models. Also, when storing the piping, securely seal the openings by
pinching, taping, etc.
While welding the pipes, be sure to blow dry nitrogen gas through them.

4.1. Selecting the pipe material

CAUTION
Do not use existing pipes.
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 40 mg/10 m.
Do not use copper pipes that have a collapsed, deformed, or discolored portion
(especially 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 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 [mm (in.)]
6.35 (1/4)
9.52 (3/8)
12.70 (1/2)
15.88 (5/8)
19.05 (3/4)
Right drain port
Prohibited
Good
Thickness [mm]
0.80
0.80
0.80
1.00
1.20
En-6
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