Daikin Altherma 3 M Installer's Reference Manual page 44

6 | Application guidelines
Installer reference guide
44
▪ 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.
▪ 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 controller of the heat pump
convectors. There are different controllers and setups possible for the heat
pump convectors. For more information, see:
The installation manual of the heat pump convectors
The installation manual of the heat pump convector options
The addendum book for optional equipment
- The heating or cooling demand signals of each heat pump convector are
connected in parallel to the digital input on the outdoor unit (X2M/35a and
X2M/30). The outdoor unit will only supply the desired additional leaving water
temperature when there is an actual demand.
▪ The user interface connected to the outdoor unit decides the space operation
mode. Mind that the operation mode on each controller of the heat pump
convectors must be set to match the outdoor unit.
Configuration
Setting
Unit temperature control:
▪ #: [2.9]
▪ Code: [C-07]
Number of water temperature zones:
▪ #: [4.4]
▪ Code: [7-02]
Value
2 (Room thermostat): Unit operation
is decided based on the ambient
temperature of the dedicated Human
Comfort Interface.
Note:
▪ Main room = dedicated Human
Comfort Interface used as room
thermostat functionality
▪ Other rooms =
thermostat functionality
1 (Dual zone): Main + additional
EBLA09~16DA + EDLA09~16DA
external room
Daikin Altherma 3 M
4P620241-1 – 2020.06