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Configuration
Installer reference guide
227
EPRA14~W1 + ETSH/X(B)16P30+50EF
Daikin Altherma 3 H HT ECH₂O
4P679467-1 – 2022.02
t
[7-0E]
[7-0D]
3°C
[6-00]
T
Sol
T
set
T
HP on
Sol
Free
HP
tank
HP
tank
HP
SH
HP
SH
Tank
SH
T
tank
Preheat
Support
HP
Heat pump
Sol
Solar energy input
HP
tank
Tank heating by heat pump operation
HP
SH
Space heating by heat pump operation
T
tank
Storage tank temperature
Tank
SH
Space heating by tank heating support
T
set
In this example: Tank setpoint (may differ depending on space heating setpoint)
T
Sol
HP (and boiler) off temperature (T
set
+3+[7‑0E])
T
HP on
HP tank heating ON temperature (Tank setpoint–[6‑00])
Free
Tank state:
Free energy
Support
Tank state:
Support
Preheat
Tank state:
Pre heating
NOTICE
If both solar energy and indirect auxiliary boiler is available, make sure that [7-0E] >
[7-0D].
Tank capacity limitation
#
Code
Description
[9.O.3]
[F-0E]
Limiting the capacity used for tank heating
support will prevent the heating support function
taking too much energy from the tank in a short
time.
Range: 0 kW~63 kW (step: 1 kW)
The capacity should be limited to the capacity provided by the heat pump.
Efficiency calculation
#
Code
Description
[9.O.4]
[F-07]
▪
0
Yes
:
The auxiliary boiler is large enough to
cover the heat demand of the building and can
therefore be considered as additional primary
heat source. Therefore, the choice between
operation of auxiliary boiler and heat pump
should be done by efficiency calculation.
▪
1
No
:
The auxiliary boiler is too small to cover
the building demand and is used solely as
backup heat source. Therefore, the heat pump
is the only available primary heat source.
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