Daikin VRV 5-S Series - Page 62

16 | Special requirements for R32 units
Installer and user reference guide
62
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1D – 2023.02
3 The remote controller put in the room served by the indoor unit must be in
'fully functional' or 'alarm only' mode. In case the indoor unit is serving a room
other than where it is installed, a remote controller is required in both the
installed and served room (some relaxations are possible, see examples
below). 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 a centralised controller. E.g., iTM with external alarm via WAGO module,
iTM with built-in alarm, …
Note: The remote controllers with built-in alarm 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 1m 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.
A field supply external alarm with a sound output 15 dB louder than the
background noise of the room MUST be installed in the following cases:
▪ The sound output of the remote controller is not sufficient to guarantee the
15dB difference. This alarm can be connected to the SVS output channel of the
outdoor unit or to the optional 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 indoor units, the optional output is only triggered when its own R32
sensor detects a leak. For more information on the SVS output signal, see
"20.2 To connect the electrical wiring to the outdoor unit" [4 112]. For more
information on the optional output PCB of the indoor unit, please refer to the
installer and user reference guide of the indoor unit.
▪ A centralised controller without built-in alarm is used, or the sound output of the
centralised controller with built-in alarm is not sufficient to guarantee the 15dB
difference. Please refer to the installation manual of the centralised controller for
the correct procedure to install the external alarm.
Note: Depending on the 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.