Daikin EHVH08SU18DA6V7 [31/240] Application guidelines

Daikin EHVH08SU23DA6V7 [31/240] Application guidelines
5 | Application guidelines
Installer reference guide
31
ERGA04~08DAV3(A) + EHVH04+08SU18+23DA6V7
Daikin Altherma 3 R F
4P618956-1 – 2020.03
Configuration
Setting Value
Unit temperature control:
#: [2.9]
Code: [C-07]
2 (Room thermostat): Unit operation
is decided based on the ambient
temperature of the user interface.
Number of water temperature zones:
#: [4.4]
Code: [7-02]
0 (Single zone): Main
Benefits
Easy. Same installation as for one room, but with thermostatic valves.
Underfloor heating or radiators – Multiple external room thermostats
Setup
M2M1
B C
A
a a
b
A Main leaving water temperature zone
B Room 1
C Room 2
a External room thermostat
b Bypass valve
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
"6.4Preparing water piping"[456].
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.

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