Daikin EPRA18DAV3 Installer's Reference Manual page 33

Underfloor heating or radiators – Multiple external room thermostats
EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
▪ For more information about connecting the electrical wiring to the unit, see:
- "8.2 Connections to the outdoor
- "8.3 Connections to the indoor
▪ 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
A Main leaving water temperature zone
B Room 1
C Room 2
a External room thermostat
b Bypass valve
▪ For more information about connecting the electrical wiring to the unit, see:
- "8.2 Connections to the outdoor
- "8.3 Connections to the indoor
▪ For each room, a shut-off valve (field supplied) is installed to avoid leaving water
supply when there is no heating or cooling demand.
5
|
4
unit" [ 91]
4
unit" [ 98]
2 (Room thermostat): Unit operation
is decided based on the ambient
temperature of the dedicated Human
Comfort Interface.
0 (Single zone): Main
B C
A
M1 M2
a a
4
unit" [ 91]
4
unit" [ 98]
Application guidelines
Value
b
Installer reference guide
33