EG
5
3. HOW TO INSTALL THE UNIT
3-1. Suspending the Indoor Unit
This unit uses a drain pump. Use a carpenter’s level to check
that the unit is level.
3-2. Preparation for Suspending
(1)
Fix the suspension bolts securely in the ceiling using
the method shown in the drawings (Figs. 3-1 / 3-2), by
attaching them to the ceiling support structure, or by
any other method that insures that the unit will be
securely and safely suspended.
(2)
Follow Fig. 3-2 and Table 3-1 to make the holes in the
ceiling.
Model
A
B
25 type
820
566
36, 48 type
1110
856
3)
Determine the pitch of the suspension bolts using the
provided full-scale installation diagram. The figure and
table (Fig. 3-3 and Table 3-2) show the relationship
between the position of the suspension fitting, the unit,
and the panel.
Model
A
B
C
D
E
25 type
157
182
261
308
124
36, 48 type
157
182
291
338
124
X
C
D
30
B
A
E
Hole-in-anchor
Hole-in-plug
Concrete
Insert
Suspension bolt (M10 or 3/8’’)
(field supply)
A (ceiling opening )
B (suspension bolt pitch)
Refrigerant
tubing side
Drain hose
side
Refrigerant tubing joint (wide tube side)
Drain connection (another side)
Suspension lug
Grille centre
820 (ceiling opening dimension)
757 (suspension bolt pitch)
Fig. 3-1
Fig. 3-3
Fig. 3-2
Table 3-1
Table 3-2
Unit: mm
Unit: mm
Refrigerant tubing joint
(narrow tube side)
3-3. Burying inside the Ceiling
(1)
When placing the unit inside the ceiling, determine the
pitch of the suspension bolts using the provided full-
scale installation diagram. (Fig. 3-4).
The size of the opening for the indoor unit can be
confirmed by attaching the full-scale installation diagram
beneath the unit. (Fig. 3-4)
Tubing and wiring must be laid inside the ceiling when
suspending the unit. If the ceiling is already constructed,
lay the tubing and wiring into positiion for connection
to the unit before placing the unit inside the ceiling.
(2)
The length of suspension bolt must be so that the
distance between the bottom of the bolt and the bottom
of the ceiling is 15 mm or more as shown in Fig. 3-4.
(3)
Thread the 2 hexagonal nuts and washers (field supply)
onto the 4 suspension bolts as shown in Fig. 3-5.
Use 2 sets of nuts and washers (upper and lower), so
that the unit with not fall off the suspension lugs.
(4)
Remove the protective cardboard used to protect the
fan parts during transport.
(5)
Adjust the distance between the unit and surface of
the ceiling (48 mm). (Fig. 3-4).
I
Full-scale installation diagram
(provided)
15 mm or more
48 mm
Fig. 3-4
Nuts and washers
(2 sets)
Suspension bolt
Suspension lug
Uppper
Lower
Fig. 3-5
Full-scale installation diagram
48 mm
