Setting Up The Domestic Hot Water Tank; System Layout - Integrated Dhw Tank; Selecting The Volume And Desired Temperature For The Dhw Tank - Daikin ERHQ011-014-016BA Installer's Reference Manual

a b c d e h h
M
f g h
A Additional leaving water temperature zone
B Room 1
C Room 2
D Main leaving water temperature zone
E Room 3
a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Motorised 3-way valve (mixing the main zone)
f Additional pump
g Main pump
h Shut-off valve
i Collector (field supply)
j Remote controller of the heat pump convectors (field
supply)
k User interface (field supply)
HPC1...3 Heat pump convectors (field supply)
FHL1...3 Floor heating loops (field supply)
▪ For the main zone: the room temperature is controlled by the user
interface, which is used as room thermostat.
▪ For the additional zone:
▪ The external thermostat is directly connected to the indoor unit.
▪ The desired room temperature is set via the external thermostat
and the thermostatic valves of the radiators in each room.
▪ The heating demand signal from the external thermostat is
connected to the digital input on the indoor unit (X2M/1a and
X2M/4). The indoor unit will only supply the desired additional
leaving water temperature when there is an actual demand.
Configuration
Setting
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
ERHQ+ERLQ011~016 + EHVZ16S18CB
Daikin Altherma – Low temperature split
4P401677-1 – 2015.02
i
A
C
B
HPC1 HPC2 HPC3
j j
i
D
E
h
FHL1 FHL2 FHL3
k
Value
2 (RT control): Unit operation is
decided based on the ambient
temperature of the user interface.
Note:
▪ Main room = user interface
used as room thermostat
functionality
▪ Other rooms = external room
thermostat functionality
1 (2 LWT zones): Main +
additional
5 Application guidelines
Setting
In case of heat pump convectors:
External room thermostat for the
additional zone:
▪ #: [A.2.2.5]
▪ Code: [C-06]
Shut-off valve output
Benefits
▪ Comfort. The smart room thermostat functionality can decrease
or increase the desired leaving water temperature based on the
actual room temperature (modulation).
▪ Efficiency.
▪ Depending on the demand, the indoor unit supplies different
leaving water temperature matching the design temperature of
the different heat emitters.
▪ Under floor heating has the best performance with Altherma LT.
5.3 Setting up the domestic hot water
tank
5.3.1 System layout – Integrated DHW tank
UI
k
f i
M
M
a b c d e h g i
a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Motorised 3‑wave valve (switch between space heating
and domestic hot water)
f Motorised 3‑way valve (mixing the main zone)
g Main pump
h Additional pump
i Shut-off valve
j Collector (field supply)
k Domestic hot water tank
FHL1...3 Floor heating loops (field supply)
UI User interface (field supply)
HPC1...3 Heat pump convectors (field supply)
5.3.2 Selecting the volume and desired
temperature for the DHW tank
People experience water as hot when its temperature is 40°C.
Therefore, the DHW consumption is always expressed as equivalent
hot water volume at 40°C. However, you can set the DHW tank
temperature at a higher temperature (example: 53°C), which is then
mixed with cold water (example: 15°C).
Value
1 (Thermo ON/OFF): When the
used external room thermostat or
heat pump convector can only
send a thermo ON/OFF
condition.
Set to follow the thermo demand
of the main zone.
j
HPC1 HPC2 HPC3
i
j
i
FHL1 FHL2 FHL3
Installer reference guide
11