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Application guidelines
Underfloor heating or radiators – Multiple external room thermostats
Installer reference guide
36
▪
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
▪
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
"8.2 Preparing water
▪
The user interface integrated in 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 (Room thermostat): Unit operation
is decided based on the ambient
temperature of the user interface.
0 (Single zone): Main
B
A
M1
a
4
piping" [
76].
Value
C
b
M2
a
ERGA04~08EAV3(A) + EHVH04+08SU18+23EA6V
Daikin Altherma 3 R F
4P629090-1 – 2020.08