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Application guidelines
Underfloor heating – Multiple external room thermostats
Installer reference guide
38
▪
The underfloor heating of the main room is directly connected to the outdoor
unit – or to the external backup heater kit, if there is one.
▪
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 User interface (delivered as accessory)
b External room thermostat
c Bypass valve
▪
For more information about connecting the electrical wiring to the unit, see
"9.2 Connections to the outdoor
▪
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
2 (Room thermostat): Unit operation
is decided based on the ambient
temperature of the dedicated Human
Comfort Interface.
0 (Single zone): Main
B
A
M1
a
b
4
unit" [
91].
4
piping" [
73].
Value
C
c
M2
b
EBLA09~16D + EDLA09~16D
Daikin Altherma 3 M
4P620241-1B – 2022.05
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