En-6
3.3B.2. INSTALL THE FILTER
•
Install the filters (
Accessories
) to the unit.
Filter
Unit
Filter
Replace drain cap
CAUTION
• Set “7.4. Jumper wire setting of Drainage function setting (JM1)”.
• Drain pump cannot be used if it is installed in wall mounted type/floor standing
concealed type.
3.3B.3. INSTALLING THE UNIT
(1) Fixing method of the unit
• To prevent overturning, fix the unit to the floor or the wall.
• To avoid the vibration of the unit, insert the spacer between the unit and the floor or the
wall, and fix it.
(2) Leveling
Base horizontal direction leveling on top of the unit.
Level
10
mm
or
less
NO GOOD
OK
Level
NO GOOD
OK
10
mm
or
less
CAUTION
•
Fasten the unit securely with Special nuts A and B.
4.
PIPE INSTALLATION
CAUTION
• Be careful that foreign matter (oil, water, etc.) does not enter the piping with
refrigerant R410A models. Also, when storing the piping, securely seal the openings
by pinching, taping, etc.
•
While brazing the pipes, be sure to purge with dry nitrogen gas.
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.)]
Thickness [mm]
6.35 (1/4)
0.80
9.52 (3/8)
0.80
12.70 (1/2)
0.80
15.88 (5/8)
1.00
19.05 (3/4)
1.20
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