How To Install The Unit; Preparation For Suspending; Burying Inside The Ceiling - Technibel CAV254R5TAA Installation Manual

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
EG
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.
Table 3-1
Model
25 type
36, 48 type
A (ceiling opening )
B (suspension bolt pitch)
Grille centre
Fig. 3-2

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).
Unit: mm
A B
820 566
1110 856
X
Drain hose
side
Refrigerant
tubing side
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.
Hole-in-anchor
Hole-in-plug
Fig. 3-1
Suspension bolt (M10 or 3/8'')
(field supply)
Table 3-2
Model A
25 type 157
36, 48 type 157
Refrigerant tubing joint (wide tube side)
Suspension lug
Fig. 3-3
Full-scale installation diagram
Nuts and washers
(2 sets)
Fig. 3-5
5
Concrete Insert
Unit: mm
B C D E
182 261 308 124
182 291 338 124
Drain connection (another side)
Refrigerant tubing joint
(narrow tube side)
(provided)
Full-scale installation diagram
Fig. 3-4
Suspension bolt
Suspension lug
Uppper
Lower
48 mm
I