10 tapping
screws which should be prepared locally.
wrap the duct in a heat insulate to avoid causing dew drop on the wall.
3-ø5 hole
Detail drawing of fresh air intake
Indoor unit
Ceiling surface
3-Tapping screw hole
ø73.4 cutout hole
4
Insulation
-
structors and interior decorators should be consulted for details.
in order to protect the ceiling from vibration.
foundation for securing the ends of the ceiling board.
reinforcing members.
be at least 6 cm long if the beams are separated by not more than 90 cm and their
sides must be at least 9 cm long if the beams are separated by as much as 180
Ferroconcrete structures
Secure the suspension bolts using the method shown, or use steel or wooden hang-
ers, etc. to install the suspension bolts.
Unit
Grille
Pillow
Ceiling
Rafter
Beam
Roof beam
Use inserts rated at 100-150 kg
Steel reinforcing rod
Ceiling
Suspend the main unit as shown in the diagram.
1. In advance, set the parts onto the suspension bolts in the order of the washers
2. Lift the unit to the proper height of the suspension bolts to insert the mounting
plate between washers and then fasten it securely.
failing to adhere to this range.
condensation may form and drip due to air leakage etc.
with water.
securely to fasten the main unit.
entering the main unit when the grilles are left unattached for a while or when the
Main unit
Ceiling
*B: Suspension bolt pitch (see Fig. 4-2
Mounting plate
Check using the Installation gauge
Main unit
Ceiling
Ceiling opening dimensions
37
12
7
+
5
0
12
0°
120°
120
°
60
°
ø 1
00
ø 10
0
ø 75
15
20
70
140
18
6
37
+
5 0
20
8
576 - 610
A
=
37
+
5 0
Min. 30
