En-3
H: Maximum height from floor to ceiling
Model name
H (mm)
AUXB004 AUXB007 AUXB009 AUXB012 AUXB014 AUXB018 AUXB024
Standard mode
2,700
2,700
2,700
2,700
2,700
2,700
2,700
High Ceiling
mode
-
-
-
3,000
3,000
3,000
3,000
*
Be sure to make the function settings with the remote controller according to the
installed ceiling height.
3.3. Discharge direction setting
The discharge direction can be selected as shown below.
(4 directions)
(3 directions)
100 or more
Unit: mm
Fig. B
Piping position
* Select the most appropriate airflow
direction from 3 or 4 directions according
to the shape of the room and the instal-
lation position.
* When changing the number of outlets,
we recommend using the optional AIR
OUTLET SHUTTER PLATE KIT to close
the outlet.
* For the specific closing pattern, please
refer to the attached AIR OUTLET
SHUTTER PLATE KIT’S MANUAL. (Do
so before installing the cassette grille as
it will be installed on the body.)
3.4. Installing the unit
WARNING
Install the air conditioner in a location which can withstand a load of at least 5 times the
weight of the main unit and which will not amplify sound or vibration. If the installation
location is not strong enough, the indoor unit may fall and cause injuries.
If the job is done with the panel frame only, there is a risk that the unit will come loose.
Please take care.
When fastening the hangers, make the bolt positions uniform.
Perform final tightening by tightening the double nut firmly. The product may fall if not
installed properly.
Using a level, or vinyl hose filled with water, fine adjust so that the body is level.
Install the air conditioner as follows.
Indoor unit installation
(1)
Make the holes for installing in the ceiling (Fig. D).
(2) Install the hanging bolts (M10), refer to the position in Fig. C.
(3) Install special nut A, then special nut B onto the hanging bolt (Fig. D).
(4)
Raise the body and mount its hooks onto the hanging bolt between the special nuts.
(5) Turn special nut B to adjust the height of the body.
(6) Be sure to leave service access for future service at the designated position.
530 (Hanging bolt position)
540 (Hanging bolt position)
570 (Indoor unit)
135
250
150 to 200
Min. 450
Service access
75
Min. 450
A
(Cassette grille)
Unit: mm
Fig. C
B
(Ceiling openings)
Cassette grille
Standard
type
Grid type
A
700
620
B
580 to 660 580 to 610
40
102
99
30
58
123
30
40
146
245
262
Drain pipe (O.D. ø25.4)
Unit: mm
Fig. D
Ceiling
Control box
Liquid pipe
Gas pipe
Special nut A
Special nut B
Hook
Hanging bolt
30 or more
After installing the body,
tighten the nuts.
19
Ceiling
Indoor unit
Leveling
• Using a level, or vinyl hose
filled with water, fine adjust
so that the body is level.
• Inclined installation so
as the drain pipe side
is higher may cause a
malfunction of the float
switch, and may cause
water leakage.
Vinyl hoses
Drain pipe
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 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)]
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
9371022635-01_IM.indb 3
08/02/2019 17:03:08
