Setting Up The Domestic Hot Water Tank; System Layout - Integrated Dhw Tank - Daikin Altherma ERLQ004-006-008CA Reference Manual

Room (zone)
Living room (main zone)
Bed rooms (additional zone)
Setup
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]
ERLQ004~008CA + EHVZ04+08S18CB
Daikin Altherma – Low temperature split
4P401676-1 – 2015.02
Heat emitters: Design
temperature
Under floor heating: 35°C
Heat pump convectors: 45°C
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
5 Application guidelines
Setting
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
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)
Value
1 (2 LWT zones): Main +
additional
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