Daikin EWYA004D2V3P Installer's Reference Manual page 31

Fan coil units – Multiple rooms
EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688013-1B – 2022.09
▪ The room temperature of the main room is controlled by the dedicated Human
Comfort Interface (BRC1HHDA used as room thermostat).
▪ A thermostatic valve is installed before the underfloor heating in each of the
other rooms.
INFORMATION
Mind situations where the main room can be heated by another heating source.
Example: Fireplaces.
Configuration
Setting
Unit temperature control:
▪ #: [2.9]
▪ Code: [C-07]
Number of water temperature zones:
▪ #: [4.4]
▪ Code: [7-02]
Benefits
▪ Easy. Same installation as for one room, but with thermostatic valves.
Setup
A Main leaving water temperature zone
B Room 1
C Room 2
a User interface (delivered as accessory)
b Remote controller of the fan coil units
▪ For more information about connecting the electrical wiring to the unit, see
"9.2 Connections to the outdoor
▪ The desired room temperature is set via the remote controller of the fan coil
units.
▪ The user interface connected to the outdoor unit decides the space operation
mode.
▪ The heating or cooling demand signals of each fan coil unit are connected in
parallel to the digital input on the outdoor unit (X2M/35 and X2M/30). The
outdoor unit will only supply leaving water temperature when there is an actual
demand.
2 (Room thermostat): Unit operation
is decided based on the ambient
temperature of the dedicated Human
Comfort Interface.
0 (Single zone): Main
B C
A
a
b b
4
unit" [ 76].
6 Application guidelines
|
Value
Installer reference guide
31