38-EN
37-EN
– 19 –
(The examples for safety device installations)
The location of the leak detector varies depending on the safety system and the room.
Incorrect
Correct
Case
1
FS-S
FS-S
a
f
f
b
c
c
b
d
d
FS-S
FS-S
a
f
f
c
c
d
d
Install the Leak
Detector in the
same room as the
connected indoor
unit.
2
FS-S
FS-S
a
f
f
b
c
c
b
d
d
Group setting of
indoor unit across
FS unit (or Shut-off
Valve unit) is not
possible.
3
FS-S
a
f
c
c
b
b
d
FS-S
a
f
c
b
b
d
Only one Leak
Detector can be
connected to indoor
units with a group
setting.
4
FS-S
FS-S
a
f
f
c
c
b
b
d
d
FS-S
FS-S
a
f
c
b
b
d
d
Multiple refrigerant
Leak Detectors
cannot be
connected to one
indoor unit.
5
FS-M
a
e
f
c
c
c
b
b
b
FS-M
e
a
f
c
c
c
b
b
b
Only one Leak
Detector can be
connected to indoor
units with a group
setting.
Install each indoor
unit in a separate
room, and do not
set the group if a
Leak Detector is
required.
پ
Multi port type
FS unit cannot be
used by setting the
CODE No. [107]
to [02] (Individual
shut-off).
Incorrect
Correct
Case
6
FS-M
a
e
f
c
c
c
b
b
b
FS-M
a
e
f
c
c
b
b
b
Only one Leak
Detector can be
connected to indoor
units with a group
setting.
If indoor units
installed in the
same room are
used in the group
setting, the Leak
Detector to be
connected should
be one in one
group.
پ
Multi port type
FS unit cannot be
used by setting the
CODE No. [107]
to [02] (Individual
shut-off).
7
FS-M
a
e
f
c
b
b
b
FS-M
a
e
f
c
b
b
b
Install the Leak
Detector in the
same room as the
connected indoor
unit.
پ
Multi port type
FS unit cannot be
used by setting the
CODE No. [107]
to [02] (Individual
shut-off).
a : Outdoor unit
b : Indoor unit
c : Leak detector
d : Single port type Flow Selector unit (or Shut-off Valve unit)
e : Multi port type Flow Selector unit
f : Battery unit
FS : Flow Selector
[ 4 ] [Safety shut-off valve installation]
Flow Selector unit and Shut-off Valve unit can be used as safety shut-off valve.
In Pump-down operation and Individual shut-off operation, the position where the safety shut-off valve can be
installed differs depending on the indoor unit, safety shut-off valve type, etc.
The installation position shall be determined according to the following.
Pump-down operation
For Pump-down operation, following 3 types of safety shut-off valves can be installed;
FS : Flow Selector
SV : Shut-off Valve
NO.
Type
System
1
FS unit (Multi port)
Heat recovery
2
FS unit (Sigle port)
Heat recovery
3
SV unit
Cooling only setting of heat recovery, Heat pump
• Flow Selector (FS) unit
The installation availability line differs depending on the FS unit type (multi / single, horsepower, number of
ports) and the length of the connecting pipe.
Example) Multi port types of 8 and 12 ports Shutoff valve secondary side (Max. pipe connection length 180 m)
