Daikin ALTHERMA, Installer'S Reference Manual

Page: 39 / 280

6 | Application guidelines
Installer reference guide
39
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
4P620241-1 – 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, and do NOT have to
be connected to the outdoor unit. The outdoor unit will supply leaving water all
the time, with the possibility to program a leaving water schedule.
Configuration
Setting Value
Unit temperature control:
▪ #: [2.9]
▪ Code: [C-07]
0 ( Leaving water ): Unit operation is
decided based on the leaving water
temperature.
Number of water temperature zones:
▪ #: [4.4]
▪ Code: [7-02]
0 ( Single zone ): Main
Benefits
Compared with underfloor heating for one room:
▪ Comfort. You can set the desired room temperature, including schedules, for
each room via the room thermostats.
Radiators – Multiple external room thermostats
Setup
M1 M2
C B
b
c
b
d
a
A
230
V AC
230
V AC
A Main leaving water temperature zone
B Room 1
C Room 2
a User interface (delivered as accessory)
b External room thermostat
c Bypass valve
d Relay
▪ For more information about connecting the electrical wiring to the unit, see
"9.2 Connections to the outdoor unit" [ 4 91].
▪ For each room, a shut-off valve (field supplied) is installed to avoid leaving water
supply when there is no heating or cooling demand.
▪ A bypass valve must be installed to make water recirculation possible when all
shut-off valves are closed. To guarantee reliable operation, provide a minimum
water flow as described in table "To check the water volume and flow rate" in
"8.1 Preparing water piping" [
4
73].