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Special requirements for R32 units
Installer and user reference guide
63
REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P687640-1 – 2022.07
Note:
Incorrect use of remote controllers can result in occurrence of error codes,
non-operating system or system that is not compliant to applicable legislation.
Note:
iTM in combination with a WAGO module can also be used as supervisor
remote controller. For further details on installation, please refer to installation
manual of the iTM.
Examples
NOT OK
OK
Case
1
a
b
d
c
e
c
a
b
Remote controller is not R32 safety
system compatible
2
c
c
c
a
b
e
c
e
c
e
c
e
a
b
Indoor units without remote
controller are not allowed
3
e
c
a
b
e
c
a
b
In case of one R32 safety system
compatible remote controller, it
should be the master and in the same
room of the indoor unit.
4
e
e
c
a
b
f
e
c
a
b
In case of two R32 safety system
compatible remote controllers, at
least one remote controller should be
in the room of the indoor.
5
c
c
e
a
b
c
c
c
e
a
b
Group control is allowed up to a
maximum of 5 indoor units connected
to different ports or connected to the
same port. At least one R32 safety
system compatible remote controller
should be in the room of the indoors.
6
c
c
c
e
a
b
c
c
c
e
a
b
All indoor units under group control
need to be in the same room.
7
c
e
c
e
f
g
a
b
In room: master remote controller in fully functional OR alarm only.
In supervisor room: supervisor remote controller
In particular situations it is mandatory
to install a remote controller at a
supervised location
a
Outdoor unit
b
Branch selector (BS)