Daikin Altherma 3 WS EWSAH06UD 9W Series Installer's Reference Manual page 36

6 | Application guidelines
Underfloor heating or radiators – Multiple external room thermostats
Installer reference guide
36
▪ For more information about connecting the electrical wiring to the unit, see
"9.2 Overview of
4
actuators" [ 89].
▪ The underfloor heating of the main room is directly connected to the indoor unit.
▪ The room temperature of the main room is controlled by the dedicated Human
Comfort Interface (BRC1HHDA used as room thermostat).
▪ A thermostatic valve is installed before the underfloor heating in each of the
other rooms.
INFORMATION
Mind situations where the main room can be heated by another heating source.
Example: Fireplaces.
Configuration
Setting
Unit temperature control:
▪ #: [2.9]
▪ Code: [C-07]
Number of water temperature zones:
▪ #: [4.4]
▪ Code: [7-02]
Benefits
▪ Easy. Same installation as for one room, but with thermostatic valves.
Setup
C B
c
M2 M1
a
A Main leaving water temperature zone
B Room 1
C Room 2
a External room thermostat
b Remote outdoor sensor
c Bypass valve
electrical connections
2 (Room thermostat): Unit operation
is decided based on the ambient
temperature of the dedicated Human
Comfort Interface.
0 (Single zone): Main
A
a
for external and
Value
b
EWSAH/X06UD
Daikin Altherma 3 WS
4P675765-1 – 2022.04
internal