AirStage ABHA18GATH Kurulum Kılavuzu - Sayfa 5
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B. Under ceiling type
Using the installation template, drill holes for piping and suspension bolts (for holes).
900
Installation
template
200
(Accessories)
Drilling position for piping
B-1. Drilling for piping
Select piping and drain directions.
Top
For direction, bore the oval hole shown in the above fi gure.
Install the drain hose at the rear; it should not be installed on the top or right side.
When the directions are selected, drill 80 mm and 50 mm or 150 mm dia. hole on the wall
so that the hole is tilted downward toward the outdoor for smooth water fl ow.
Wall
Indoor side
B-2. Drilling the holes and attaching the suspension bolts
Drill Φ25 mm holes at the suspension bolt locations, then install the bolts.
Bolt Strength
980 to 1470 N (100 to 150 kgf)
Ceiling panel
20 to 50 mm
[If using anchor bolts]
Drill holes for anchor bolts at the locations at which you will set the suspension bolts. Note
that anchor bolts are M10 bolts (to be obtained locally).
Anchor-Bolt Strength
980 to 1470 N (100 to 150 kgf)
B-3. Installing Brackets
Install the bracket with nuts, spring washers.
Ceiling panel
Special nut A
(Accessories)
Spring washer
(Field supply)
M10 Nut (Field supply)
M10 Nut (Field supply)
Drilling position
for suspension
bolt
Ceiling
Wall
Unit : mm
Rear (Install the drain hose
in this direction.)
Right
Hole
VIEW
CAUTION
6
Outdoor side
Unit : mm
Φ25 mm
Ceiling
20 to
50 mm
M10 Anchor bolt
(Field supply)
Bracket (Left)
(Accessories)
Bracket
Bracket (Right)
(Accessories)
B-4. Installing indoor unit
Reset the hex bolts as shown in the fi gure
Indoor unit
Apply the indoor unit to the brackets.
Now, securely tighten the hex bolts in both sides.
3.3.3. Barrier and RFM base removal and installation
(1) Remove the barriers by removing the 4 fi xing screws (2 screws each).
(2) Remove the RFM base by removing the 2 fi xing screws and unhooking the 1 hook.
(3) After completing the work, install the barriers and RFM base as they were originally.
Fixing screw
(2 positions)
Barriers
Fixing screw
(2 positions)
Install the barriers in the correct direction.
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.
] 1
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
(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 (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 [mm (in.)]
6.35 (1/4)
9.52 (3/8)
12.70 (1/2)
15.88 (5/8)
19.05 (3/4)
Hex bolt
8 to 13
Unit : mm
Bracket
Bolt
Indoor unit
Hook
RFM base
CAUTION
CAUTION
Thickness [mm]
0.80
0.80
0.80
1.00
1.20
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