Daikin EWAA016DAV3P - Page 36

6 | Application guidelines
Installer reference guide
36
EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620242-1 – 2020.06
▪ The user interface connected to the outdoor unit decides the space operation
mode. Mind that the operation mode on each room thermostat must be set to
match the outdoor unit.
▪ The room thermostats are connected to the shut-off valves. They are also
connected to the outdoor unit (X2M/35 and X2M/30) -via a relay (field supplied)-
to give feedback when operation is needed. The outdoor unit will supply leaving
water as soon as there is a request from one of the rooms.
Configuration
Setting Value
Unit temperature control:
▪ #: [2.9]
▪ Code: [C-07]
1 (External room thermostat):
Unit operation is decided by the
external thermostat.
Number of water temperature zones:
▪ #: [4.4]
▪ Code: [7-02]
0 (Single zone): Main
External room thermostat for the main
zone:
▪ #: [2.A]
▪ Code: [C-05]
1 (1 contact): When the used
external room thermostat can only send
a thermo ON/OFF condition. No
separation between heating or cooling
demand.
Benefits
Compared with radiators for one room:
▪ Comfort. You can set the desired room temperature, including schedules, for
each room via the room thermostats.
Fan coil units – Multiple rooms
Setup
a
B C
A
bb
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 unit"[478].
▪ 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.