Daikin Altherma 3 H MT ECH2O, Руководство по установке для специалистов

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6 | Application guidelines
Installer reference guide
41
EPRA08~W1 + ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663478-1 – 2021.07
Underfloor heating or radiators – Multiple external room thermostats
Setup
M1 M2
C B
a a
A
A Main leaving water temperature zone
B Room 1
C Room 2
a External room thermostat
▪ For more information about connecting the electrical wiring to the unit, see:
- "9.2 Connections to the outdoor unit" [
4
106]
- "9.3 Connections to the indoor unit" [
4
114]
▪ 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 piping" [
4
85].
▪ 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.
Configuration
Setting Value
Unit temperature control:
▪ #: [2.9]
▪ Code: [C-07]
0 ( Leaving water ): Unit operation is
decided based on the leaving water
temperature.
Number of water temperature zones:
▪ #: [4.4]
▪ Code: [7-02]
0 ( Single zone ): Main
Benefits
Compared with underfloor heating or radiators for one room:
▪ Comfort. You can set the desired room temperature, including schedules, for
each room via the room thermostats.