13 Unit installation
Installation and operation manual
24
SV1A25AJV1B+SV4~8A14AJV1B
VRV 5 safety valve unit
4P709466-1 – 2023.09
a
[mm]
c
≥
485
c
≥
485
d
≥
500
b
≥
720
(≥49.5)
291
f: 875 f: 450
A≥1800≥100
a
≥5
e e
g
e
[mm]
A Minimum distance to the floor
a Switch box
b Maintenance space
c Minimum connection space for refrigerant piping coming
from the outdoor unit, or for piping coming from or going
to another SV unit, drain piping and ducting
d Minimum connection space for the refrigerant piping to
the indoor units
e False ceiling
f False ceiling opening
g Floor surface
▪ Ceiling strength. Check whether the ceiling is strong enough to
support the weight of the unit. If there is a risk, reinforce the ceiling
before installing the unit.
▪ For existing ceilings, use anchors.
▪ For new ceilings, use sunken inserts, sunken anchors or other
field supplied parts.
▪ Ceiling openings. Respect the following sizes and positions for
the ceiling openings:
[mm]
450×450
A
40
30
100 100
875
A Ceiling opening size:
800mm (SV1~4A)
1200mm (SV6~8A)
13.2 Possible configurations
Refrigerant piping
A Refrigerant piping connected to left side only
B Refrigerant piping connected to right side only
C Refrigerant piping connected to both sides (flow-through)
1 From outdoor or from SV unit
2 From outdoor or from/to SV unit
a Stopper pipes (accessory)
b Field piping (field supply)
Ducting