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Use refrigerant R410A in the refrigerant cycle. Do not
charge oxygen, acetylene or other flammable and
poisonous gases into the refrigerant cycle when
performing a leakage test or an air-tight test. These
gases are extremely dangerous and can cause an
explosion. It is recommended nitrogen be used for
those tests.
4.3.4 Adjust the Distance between Indoor Unit
5.1 Piping Materials
(1) Prepare locally-supplied copper pipes.
(2) Select clean copper pipes. Make sure there is no
dust and moisture inside. Blow the inside of the
pipes with nitrogen or dry air, to remove any dust
or foreign matters before connecting pipes.
(3) Select copper pipes based on Fig. 5.2.
4. Mounting Indoor Unit
(2) Adjust the indoor unit to the correct position
(a) For suspended ceiling with panel installed
(b) For ceiling without panel
Installation Details for Air Panel
The details of installation work for air panel
shall be according to the Installation Manual.
Check to ensure the proper connection of
connectors between the indoor unit and air
panel.
Flange Surface
Indoor Unit
(Bottom View)
Ceiling
Indoor Unit
Surface of
Suspended
Ceiling
Suspension Bolt
Surface of Ceiling
Indoor Unit
Bolt (M6)
Pattern Board for Installation
(0~)
(0~)
21/64~1-3/8
(0~)
(0~)
using the factory-supplied inspection ruler
and Ceiling
Put the inspection ruler
below the indoor unit
Put the inspection ruler at
surface of suspended ceiling
Opening size of inspection ruler
Check the heights of suspended ceiling and
indoor unit at each corner
Check the size of each side
(1) The pattern board for installation is in the
packing carton. Please cut it off.
Please cover the machine with plastic cloth
to keep it clean during installation.
Check the level of water pan using a water
level to avoid incorrect installation of drain
discharge mechanism.
The drain pipe side must be approximately
5mm lower than other parts.
Tighten the nuts of the suspension brackets
after the adjustment is completed. Apply
LOCK-TIGHT paint to the bolts and nuts in
order to prevent them loosening. Otherwise,
abnormal noise or sounds may occur and the
indoor unit may fall down.
4
55/64(22)
Opening Size
Opening Size
21/64~1-3/8
21/64~1-3/8
21/64~1-3/8
in.(mm)
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