Daikin VRV 5-S Series - Page 61

16 | Special requirements for R32 units
Installer and user reference guide
61
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1D – 2023.02
For installation of the indoor unit, refer to the installation and operation manual
delivered with the indoor unit. For compatibility of indoor units refer to the latest
version of the technical data book of this unit.
The total amount of refrigerant in the system shall be less than or equal to the
maximum allowed total refrigerant amount. The maximum allowed total
refrigerant amount depends on the area of the rooms being served by the system
and the rooms in the lowest underground floor.
See "16.3To determine the charge limit"[465] to check if your system meets the
requirement for charge limitation.
An optional output PCB for the indoor unit can be added to provide output for
external device. The output PCB will trigger in case a leak is detected, the R32
sensor fails or when the sensor is disconnected. For exact model name see option
list of the indoor unit. For more information about this option, refer to the
installation manual of the optional output PCB.
Piping requirements
Piping must be installed according to instructions given in "18 Piping
installation"[481]. Only mechanical joints (e.g. braze+flare connections) that are
compliant with the latest version of ISO14903 can be used.
For piping installed in the occupied space, please make sure that the piping is
protected against accidental damage. Piping should be checked according to
procedure as mentioned in "18.3Checking the refrigerant piping"[492].
Remote controller requirements
b
a
c
d
f
h
e
d
c
b b
c
d
g
h h
a Heat pump outdoor unit
b Refrigerant piping
c VRV direct expansion (DX) indoor unit
d Remote controller in normal mode
e Remote controller in alarm only mode
f Remote controller in supervisor mode (mandatory in some situations)
g Centralised controller (optional)
h Option PCB (optional)
For installation of the remote controller, please refer to the installation and
operation manual delivered with the remote controller. Each indoor unit must be
connected with a R32 safety 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 must be connected to a separate remote controller. In case
indoor units are operating under group control, it is possible to use only one
remote controller per room.