Installation and operation manual
4
Installation is possible when opening dimensions are as
follows.
When installing the unit within the frame for fixing ceiling
materials.
(See figure 4)
2.
Make the ceiling opening needed for installation where
applicable. (For existing ceilings.)
•
Refer to the paper pattern for installation for the ceiling
opening dimensions.
•
Create the ceiling opening required for installation. From the
side of the opening to the casing outlet, implement the
refrigerant and drain piping and wiring for remote controller
(unnecessary for wireless type) and indoor-outdoor unit casing
outlet. Refer to each piping or wiring section.
•
After making an opening in the ceiling, it may be necessary to
reinforce ceiling beams to keep the ceiling level and to prevent
it from vibrating. Consult the builder for details.
3.
Install the suspension bolts. (use either a W3/8 or M10
size bolt.)
Use anchors for existing ceilings, and a sunken insert, sunken
anchors or other field supplied parts for new ceilings to reinforce
the ceiling in order to bear the weight of the unit. Adjust clearance
from the ceiling before proceeding further.
Installation example see
figure 5
.
Indoor unit installation
When installing optional accessories (except for the decoration
panel), read also the installation manual of the optional
accessories. Depending on the field conditions, it may be easier
to install optional accessories before the indoor unit is installed.
However, for existing ceilings, install fresh air intake kit before
installing the unit.
Installation shall be done by an installer, the choice of materials
and installation shall comply with the applicable legislation. In
Europe the EN378 is the applicable standard that shall be used.
1.
Install the indoor unit temporarily.
•
Attach the hanger bracket to the suspension bolt. Be sure to
fix it securely by using a nut and washer from the upper and
lower sides of the hanger bracket.
•
Securing the hanger bracket see
figure 6
.
2.
Fix the paper pattern for installation. (For new ceilings
only.)
•
The paper pattern for installation corresponds with the
measurements of the ceiling opening. Consult the builder for
details.
•
The centre of the ceiling opening is indicated on the paper
pattern for installation. The centre of the unit is indicated on
the unit casing and on the paper pattern for installation.
•
After removing the packaging material from the paper pattern
for installation, attach the paper pattern for installation to the
unit with the attached screws as shown in
figure 8
.
•
Adjust the height of the unit until it matches the indication in
figure 8
.
3.
Adjust the unit to the right position for installation.
(Refer to
"Preparations before installation" on page 3
.)
4.
Check if the unit is horizontally levelled.
•
Do not install the unit tilted. The indoor unit is equipped with a
built-in drain pump and float switch. (If the unit is tilted against
the direction of the condensate flow (the drain piping side is
raised), the float switch may malfunction and cause water to
drip.)
•
Check if the unit is levelled at all four corners with a water
level or a water-filled vinyl tube as shown in
figure 12
.
5.
Remove the paper pattern for installation. (For new
ceilings only.)
Refrigerant piping work
For refrigerant piping of outdoor unit, refer to the installation
manual supplied with the outdoor unit.
Execute heat insulation work completely on both sides of the gas
piping and the liquid piping. Otherwise, this can sometimes result
in water leakage.
Before rigging tubes, check which type of refrigerant is used.
Protect or enclose refrigerant tubing to avoid mechanical damage.
Use a pipe cutter and flare suitable for the used refrigerant.
To prevent dust, moisture or other foreign matter from
infiltrating the tube, either pinch the end, or cover it with tape.
Use copper alloy seamless pipes (ISO 1337).
The outdoor unit is charged with refrigerant.
To prevent water leakage, execute heat insulation work
completely on both sides of the gas and liquid piping. When
using a heat pump, the temperature of the gas piping can
reach up to approximately 120°C, use insulation which is
sufficiently heat resistant.
1
Dimensions inside frame
2
Opening dimension inside the frame for ceiling
3
Frame
4
Ceiling material
5
Ceiling opening dimension
6
Ceiling-panel overlapping dimension
NOTE
Installation is possible with a ceiling dimension of
910 mm (marked with *). However, to achieve a
ceiling-panel overlapping dimension of 20 mm, the
spacing between the ceiling and the unit should be
35 mm or less. If the spacing between ceiling and the
unit is over 35 mm, attach ceiling material to the part or
recover the ceiling.
1
Ceiling slab
2
Anchor
3
Long nut or turn-buckle
4
Suspension bolt
5
False ceiling
NOTE
All the above parts are field supplied.
For other installation than standard installation, contact
your dealer for details.
1
Nut (field supplied)
2
Washer (supplied with the unit)
3
Hanger bracket
4
Double nut (field supply, tighten)
1
Paper pattern for installation
2
Centre of the ceiling opening
3
Centre of the unit
4
Screws (supplied with the unit)
1
Water level
2
Vinyl tube
All field piping must be provided by a licensed refrigeration
technician and must comply with the relevant local and
national codes.
EN3P320142-1F.book Page 4 Tuesday, October 3, 2017 2:46 PM
