Daikin EWAA016DAV3P - Page 39

6 | Application guidelines
Installer reference guide
39
EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620242-1 – 2020.06
Setup
B
A
E
C
D
c
b
de
a
b
M1
A Additional leaving water temperature zone
B Room 1
C Room 2
D Main leaving water temperature zone
E Room 3
a User interface (delivered as accessory)
b Remote controller of the fan coil units
c Dedicated Human Comfort Interface (BRC1HHDA used as room thermostat)
d Mixing valve station
e Pressure regulating valve
INFORMATION
A pressure regulating valve should be implemented before the mixing valve station.
This is to guarantee the correct water flow balance between the main leaving water
temperature zone and the additional leaving water temperature zone in relation to
the required capacity of both water temperature zones.
▪ For more information about connecting the electrical wiring to the unit, see
"9.2Connections to the outdoor unit"[478].
▪ For the main zone:
- A mixing valve station is installed before the underfloor heating.
- The pump of the mixing valve station needs to be controlled by an independent
controller (field supply) based on the heating request of the room.
- The room temperature is controlled by the dedicated Human Comfort
Interface (BRC1HHDA used as room thermostat).
- In cooling mode, you can allow the underfloor heating (main zone) to provide
refreshment (no real cooling), or NOT allow it.
If allowed:
Do NOT install a shut-off valve.
Set [F-0C]=0 to activate the setpoint screen of [2] Main zone and [1] Room.
Set the leaving water temperature of the main zone NOT too low (typically:
20°C)
If NOT allowed, install a shut-off valve (field supply) and connect it to
X2M/3+4.