Indoor Unit Installation; Installing The Duct - Daikin FXSQ15A2VEB Installation And Operation Manual

Standard rear suction (See figure 6a)
1 Ceiling surface
2 Ceiling opening
3 Service access panel (optional accessory)
4 Air filter
5 Air inlet duct
6 Duct service opening
7 Interchangeable plate
Installation with rear duct and duct service opening (See
figure 6b)
Installation with rear duct, no duct service opening (See
figure 6c)
NOTE Before installation of the unit (in case of installation
with duct, but no duct service opening): modify the
position of the air filters.
1 Remove the air filter(s) at the
outside of the unit
2 Remove the interchangeable
plate
3 Install the air filter(s) from the
inside of the unit
4 Reinstall the interchangeable
plate
When installing an air inlet duct, select fixing screws
NOTE
that shall stick out maximum 5 mm at the inside of the
flange to protect the air filter from damage during
maintenance of the filter.
1 Air inlet duct
2 Inside of the flange
3 Fixing screw
Mounting the air inlet panel with a canvas connection (See
figure 7a)
Mounting the air inlet panel directly (See figure 7b)
1 Ceiling surface
2 Ceiling opening
3 Air inlet panel (Optional accessory)
4 Indoor unit (Back side)
5 Canvas connection for air inlet panel (Optional accessory)
Model
15~32
40~50
63~80
100~125
Bottom suction (See figure 7c)
NOTE The unit can be used with bottom suction by replacing
the interchangeable plate by the air filter holding plate.
3
NOTE
2 The fan speed for this indoor unit is preset to provide standard
external static pressure.
3 Install the suspension bolts.
(Use M10 size bolt for the suspension 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.
Installation example
(See figure 3)
3
1
NOTE
2

Indoor unit installation

4
When installing optional accessories (except for the air inlet 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.
1 Install the indoor unit temporarily.
-
1 2
≤5 mm
3
2 Check if the unit is horizontally levelled.
-
-
3 Tighten the upper nut.

Installing the duct

Connect the duct supplied in the field.
A (mm)
610 Air inlet side
760
-
1060
-
1460
-
1 Air filter holding plate with air filter(s)
2 Interchangeable plate
For other installation than standard installation, contact
your Daikin dealer for details.
1 Anchor
2 Ceiling slab
3 Long nut or turn-buckle
4 Suspension bolt
5 Indoor unit
All the above parts are field supplied.

For other installation than standard installation,

contact your dealer for details.
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. (See figure 4)
1 Nut (field supply)
2 Washer for hanger bracket (supplied with the unit)
3 Tighten (double nut)
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 condensate flow, 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 9.
1 Water level
2 Vinyl tube
Attach the duct and intake-side flange (field supply).
Connect the flange to the main unit with accessory screws
(7).
Wrap the intake-side flange and duct connection area with
aluminum tape or something similar to prevent air escaping.
When attaching a duct to the intake side, be sure to attach
an air filter inside the air passage on the intake side. (Use
an air filter whose dust collecting efficiency is at least 50%
in a gravimetric technique.)
The included filter is not used when the intake duct is
attached.