Daikin EWYA004D2V3P Installer's Reference Manual page 29

Combination: Underfloor heating + Fan coil units
EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688013-1B – 2022.09
▪ Stylish.
▪ Space heating is provided by:
- The underfloor heating
- The fan coil units
▪ Space cooling is provided by the fan coil units only. The underfloor heating is shut
off by the shut-off valve.
Setup
A Main leaving water temperature zone
B One single room
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 fan coil units are directly connected to the outdoor unit – or to the external
backup heater kit, if there is one.
▪ A shut-off valve (field supply) is installed before the underfloor heating to
prevent condensation on the floor during cooling operation.
▪ The desired room temperature is set via the remote controller of the fan coil
units.
▪ The space heating/cooling demand signal is sent to one digital input on the
outdoor unit (X2M/35 and X2M/30).
▪ The space operation mode is sent by one digital output (X2M/4 and X2M/3) on
the outdoor unit to:
- The fan coil units
- The shut-off valve
Configuration
Setting
Unit temperature control:
▪ #: [2.9]
▪ Code: [C-07]
Number of water temperature zones:
▪ #: [4.4]
▪ Code: [7-02]
B
A
M1
a
b
4
unit" [ 76].
1 (External room thermostat):
Unit operation is decided by the
external thermostat.
0 (Single zone): Main
6 Application guidelines
|
Value
Installer reference guide
29