Daikin EBLQ05+07CAV3 Installer's Reference Manual page 17

▪ Main zone = Zone with the lowest design temperature in heating,
and the highest design temperature in cooling
▪ Additional zone = The other zone
NOTICE
If there are two leaving water temperature zones, and an
external room thermostat is used, then cooling operation is
NOT possible.
CAUTION
When there is more than one leaving water zone, you must
ALWAYS install a mixing valve station in the main zone to
decrease (in heating)/increase (in cooling) the leaving
water temperature when the additional zone has demand.
Typical example:
Room (zone)
Living room (main zone)
Bed rooms (additional zone)
Setup
c
b
A Additional leaving water temperature zone
B Room 1
C Room 2
D Main leaving water temperature zone
E Room 3
a User interface
b Control box
c Backup heater (option)
d Pressure-regulating valve
e Mixing valve station
f Remote controller of the heat pump convectors
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 the main zone:
▪ A mixing valve station is installed before the under floor heating.
▪ The room temperature is controlled by the user interface, which
is used as room thermostat.
EBLQ05+07CAV3 + EDLQ05+07CAV3 + EKCB07CAV3 +
EK2CB07CAV3 + EKMBUHCA3V3 + EKMBUHCA9W1
Daikin Altherma low temperature monobloc
4P405544-1 – 2015.03
Heat emitters: Design
temperature
Under floor heating: 35°C
Heat pump convectors: 45°C
A
C
B
f f
D
e
E
d
a
5 Application guidelines
NOTICE
Daikin is NOT responsible for the operation of the mixing
valve station pump. It is the responsibility of the installer to
guarantee pump operation.
▪ For the additional zone:
▪ The heat pump convectors are directly connected to the
outdoor unit – or to the backup heater, if there is one.
▪ The desired room temperature is set via the remote controller of
the heat pump convectors for each room.
▪ The heating or cooling demand signals of each heat pump
convector are connected in parallel to the digital input on control
box EKCB07CAV3 (X2M/1 and X2M/2). The outdoor unit will
only supply the desired additional leaving water temperature
when there is an actual demand.
▪ The main user interface (connected to control box EKCB07CAV3)
decides the space operation mode. Mind that the operation mode
of each heat pump convector remote controller must be set to
match that of the main user interface.
Configuration
Setting
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
In case of heat pump convectors:
External room thermostat for the
additional zone:
▪ #: [A.2.2.5]
▪ Code: [C-06]
Shut‑off valve
At the mixing valve station
Benefits
▪ Comfort.
▪ The smart room thermostat functionality can decrease or
increase the desired leaving water temperature based on the
actual room temperature (modulation).
▪ The combination of the two heat emitter systems provides the
excellent heating comfort of the under floor heating, and the
excellent cooling comfort of the heat pump convectors.
▪ Efficiency.
▪ Depending on the demand, the outdoor unit supplies different
leaving water temperature matching the design temperature of
the different heat emitters.
▪ Under floor heating has the best performance with Altherma LT.
Value
2 (RT control): Unit operation is
decided based on the ambient
temperature of the user interface.
Note:
▪ Main room = user interface
used as room thermostat
functionality
▪ Other rooms = external room
thermostat functionality
1 (2 LWT zones): Main +
additional
1 (Thermo ON/OFF): When the
used external room thermostat or
heat pump convector can only
send a thermo ON/OFF
condition. No separation between
heating or cooling demand.
If the main zone must be shut off
during cooling mode to prevent
condensation on the floor, set it
accordingly.
Set the desired main leaving
water temperature for heating
and/or cooling.
Installer reference guide
17