13 Special requirements for R32 units
Installation and operation manual
22
REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P684060-1 – 2022.02
system compatible remote controller (e.g. BRC1H52/82* or later
type). These remote controllers have implemented safety measures
that will warn the user visually and audibly in case of a leak.
For installation of the remote controller it is mandatory to follow the
requirements.
1
Only a safety system compatible remote controller can be used.
See technical data sheet for remote controller compatibility (e.g.
BRC1H52/82*).
2
Each indoor unit has to be connected to a separate remote
controller. In case indoor units are operating under group
control, it is possible to only use 1 remote controller per room.
3
The remote controller put in the same room as the indoor unit
has to be in fully functional mode or alarm only mode. For
details about the different remote controller modes and how to
set up, please check the note below or refer to the installation
and operation manual delivered with the remote controller.
4
For buildings where sleeping facilities are offered (e.g. hotel),
where persons are restricted in their movements (e.g.
hospitals), an uncontrolled number of persons is present or
buildings where people are not aware of the safety precautions
it is mandatory to install one of the following devices at a
location with 24-hour monitoring:
▪ a supervisor remote controller
▪ or an iTM with external alarm via WAGO module.
Note:
The remote controller will generate a visible and audible
warning. E.g. the BRC1H52/82* remote controllers can generate an
alarm of 65 dB (sound pressure, measured at 1m distance of the
alarm). Sound data is available in the technical data sheet of the
remote controller. The alarm should always be 15 dB louder than the
background noise of the room. In case of higher background noise in
a certain room, we recommend to use an external alarm (field
supply) in that room. This alarm can be connected to the SVS output
channel of the outdoor unit, BS unit or the external output PCB of the
indoor unit of that specific room. The outdoor SVS will trigger for any
R32 leak detected in the complete system. For BS units and indoor
units, SVS is only triggered when its own R32 sensor detects a leak.
Note:
Depending on configuration, the remote controller is operable
in three possible modes. Each mode offers different controller
functionality. For detailed information about setting the operation
mode of the remote controller and its function, please refer to the
installer and user reference guide of the remote controller.
Mode
Function
Fully functional
The controller is fully functional. All normal
functionality is available.
This controller can
be master or slave.
Alarm only
The controller only acts as leak detection
alarm (for a single indoor unit). No
functionality is available. The remote
controller should always be put in the same
room as the indoor unit.
This controller can
be master or slave.
Supervisor
The controller only acts as leak detection
alarm (for the whole system, i.e. multiple
indoor units and their respective controllers).
No other functionality is available. The remote
controller should be placed at a supervised
location.
This remote controller can only
be the slave.
Note:
In order to add a supervisor remote
controller to the system, a field setting must
be set on remote controller and outdoor unit.
Indoor units and BS units need to be
assigned an address number.
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.
