Installation Instructions; Installation Site Selection; Place And Space For Installation - Technibel MCAV127C5VAB Technical Data & Service Manual

6. INSTALLATION INSTRUCTIONS

6-1. Installation Site Selection

Maximum Allowable Tubing Length(L) and
Elevation Difference(H).
IMPORTANT
The Multi-Split System outdoor unit should be installed as close to
the indoor units as possible. Maximum allowable length of the
refrigerant tubing and elevation difference between outdoor and
indoor units are shown in Fig.1 and Table 1.
Table.1
Max allowable
tubing length tubing length(L).
at shipment.(m)
7.5
* If total tubing length becomes 7.5 to 20 m (max.), charge
additional refrigerant (R22) by 25 g/m.
No additional charge of compressor oil is necessary.

6-2. Place and Space for Installation

Avoid:
heat source, exhaust fans, etc. (Fig. 2)
direct sunlight
damp, humid, or uneven locations.
Do:
choose a place as cool as possible.
choose a place that is well ventilated.
allow enough room around the unit for air intake
/exhaust and possible maintenance. (Fig. 3)
provide a solid base (concrete block, 10 x 40 cm
beams or equal), a minimum of 10 cm above ground level to
reduce humidity and protect the unit against possible water
damage and decreased service life. (Fig. 4)
use lug (anchor) bolts or equal to bolt down the unit, reducing
vibration and noise. (Fig. 4)
Limit of Limit of elevation
difference(H).
(m) (m)
20 7
INDOOR
UNIT
Less than elevation
difference (H) between
the 2 units
Required amount
of additional
refrigerant*(g/m).
25
Hot air
Outdoor unit
Air intake
Min. 10 cm
Min.
Air discharge
10 cm
Anchor bolts
(4 pcs.)
16
Tubing length (L)
OUTDOOR
UNIT
Fig.1
Exhaust fan
Fig.2
Fig. 3
Obstacle above
Valve
side
Min. 60 cm
Min.
50 cm
Ground
Fig.3
Fig.4
Fig. 5 - B
Heat source
2 m
2 m
Min. 10 cm