Daikin Altherma 3 R F Installer's Reference Manual page 30

5 | Application guidelines
Underfloor heating or radiators – Multiple external room thermostats
Installer reference guide
30
▪ 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:
▪ #: [A.2.1.7]
▪ Code: [C-07]
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.
▪ 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
"7.2 Preparing water
▪ The user interface connected to the indoor unit decides the space operation
mode. Mind that the operation mode on each room thermostat must be set to
match the indoor unit.
▪ The room thermostats are connected to the shut-off valves, but do NOT have to
be connected to the indoor unit. The indoor unit will supply leaving water all the
time, with the possibility to program a leaving water schedule.
2 (RT control): Unit operation is
decided based on the ambient
temperature of the user interface.
B
A
M1
a
4
unit" [ 90]
4
unit" [ 91]
4
piping" [ 65].
Value
C
b
M2
a
ERLA03DAV3 + EHFH03S18DJ3V
Daikin Altherma 3 R F
4P596806-1 – 2019.10