AirStage ASHA007GTAH Manuel d'installation - Page 5
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3.3.5 Forming the drain hose and pipe
Insert drain hose and drain cap securely. Drain should slope down to avoid water leak-
age.
When inserting the drain hose, no other material than water should be applied. Applica-
tion of other material than water will cause deterioration of the hose, and may cause
water leakage.
After you remove a drain hose, be sure to attach the drain cap.
When you secure the piping and drain hose with tape, arrange the drain hose so that it
is at the bottom of the piping.
For drain hose piping in low temperature environment, you need to apply freeze protec-
tion to prevent a frozen drain hose.
After cooling operation is performed in low temperature environment, (when outdoor
temperature under 0 °C,) water in the drain hose could be frozen. Frozen drain water
will block the water flow in the hose, and may cause water leakage at the indoor unit.
[For (A) Rear piping, (B) Right piping and (C) Bottom piping]
(1) Install the indoor unit piping in
the direction of the wall hole
and bind the drain hose and
pipe together with vinyl tape.
(2) Install the piping so that the
drain hose is at the bottom.
(3) Wrap the pipe of the indoor unit
that visible from the outside
with decorative tape.
(4) For right or bottom outlet
piping, cut off the piping outlet
cutting groove with a hacksaw.
[For (D) Left bottom piping, (E) Left piping and (F) Center piping, (G) Left rear
piping]
Insert the drain hose and drain cap into the drain port, making sure that it comes in con-
tact with the back of the drain port, and then mount it. If the drain hose is not connected
properly, leaking will occur.
(1) Interchange the drain cap and the drain hose.
• For left outlet piping, cut off
the piping outlet cutting groove
with a hacksaw.
• Remove the drain cap by pull-
ing at the projection at the end
of the cap with pliers, etc.
Right side
Drain hose removal and installation method of the 004/007/009 model
Removal
Screw
Drain hose
Drain fixture
Remove the screw at the left
Vertically insert the drain hose toward the inside, so that
of drain hose and pull out drain
the drain fixture can accurately align with the screw hole
hose.
around the drain cock. After inserting and before replac-
ing, reinstall and fix the removed screws.
Installing the drain cap
Use a hexagonal wrench 4 mm at opposite side to
No gap
insert the drain cap, till the drain cap contacts the
tip of drain cock.
Hexagonal
Drain cock
wrench
Drain cap
(2) Align the marks on the wall hook bracket and shape the connection pipe.
For left piping and left rear piping, align the marks on the wall hook bracket and
shape the connection pipe.
Wall hook
bracket
Connection
piping
Connection pipe
(Liquid pipe)
CAUTION
Bind with vinyl tape
Pipe (top)
Rear piping
Indoor unit drain hose
Bottom piping
(bottom)
CAUTION
Left side
Drain hose
Drain cap
Installation
Drain cock
Drain hose
Screw hole
Screw
Drain fixture
Alignment marks
Connection pipe (Gas pipe)
004/007/009 model
(3) Bend the connection piping at the bend radius of 70 mm or more and install no more
than 35 mm from the wall.
030/034 model
(4) Bend the connection piping at the bend radius of 100 mm or more and install no
more than 35 mm from the wall.
3.3.6 Installing the indoor unit
(1) After passing the indoor piping and drain hose through the wall hole, hang the indoor
unit on the hooks at the top and bottom of the wall hook bracket.
After hooking the indoor unit to the top hook, hook the fittings of the indoor unit to the
2 bottom hooks while lowering the unit and pushing it against the wall.
004/007/009 model
Indoor
unit
Bottom hooks
030/034 model
Indoor
unit
(Fitting)
(2) Insert the spacer, etc. between the
indoor unit and the wall hook bracket
and separate the bottom of the indoor
unit from the wall.
4. PIPE INSTALLATION
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
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 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 avail-
able 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)
Top hooks
Wall hook
bracket
Top hooks
Wall hook
bracket
Bottom hooks
Indoor unit
Spacer
Wall hook bracket
CAUTION
CAUTION
Thickness [mm]
0.80
0.80
0.80
1.00
1.20
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