Daikin EPRA10EAV3 Installer's Reference Manual page 226

10 | Configuration
Installer reference guide
226
T
Sol
tank
T
Sol
T
set
HP
SH
T
HP on
HP
tank
HP Heat pump
Sol Solar energy input
HP Tank heating by heat pump operation
tank
HP Space heating by heat pump operation
SH
T Storage tank temperature
tank
Tank Space heating by tank heating support
SH
T In this example: Tank setpoint (may differ depending on space heating setpoint)
set
T HP (and boiler) off temperature (T
Sol
T HP tank heating ON temperature (Tank setpoint–[6‑00])
HP on
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
[9.O.3] [F-0E]
The capacity should be limited to the capacity provided by the heat pump.
Efficiency calculation
# Code
[9.O.4] [F-07]
Support
[7-0E]
[7-0D]
3°C
[6-00]
Tank HP
SH SH
HP
tank
+3+[7‑0E])
set
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)
▪ 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.
Free
Preheat
t
Description
Description
EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663478-1B – 2022.07