10
|
Configuration
Installer reference guide
226
EPRA14~18D + ETSH/X(B)16P30+50E
Daikin Altherma 3 H HT ECH₂O
4P679467-1C – 2023.07
Intelligent tank manager
The intelligent tank manager functions allow for efficient and flexible usage of
energy stored in the energy storage tank of the unit, both for domestic hot water
generation and space heating.
When the storage tank temperature rises above the temperature required to
ensure sufficient domestic hot water, the resulting energy can be used to support
space heating. This energy can either be provided by a solar system or an auxiliary
boiler connected to the storage tank. The latter is desirable, if the auxiliary heater
is at the given conditions more efficient than the heat pump. To ensure optimal
energy usage, several parameters should be adjusted according to the individual
system setup.
NOTICE
To ensure safe operation of the system, do NOT turn off DHW when space heating is
required.
Tank boiler hysteresis
#
Code
Description
[9.O.1]
[7‑0D]
Range: 2°C~20°C (step: 0.5°C)
The tank boiler hysteresis determines the switch between space heating by heat
pump (while boiler is preheating the tank) and space heating by tank heating
support (while boiler may or may not operate).
This applies only, when tank energy is allowed to be used for space heating
([C‑02]=3) and the auxiliary boiler is deemed more efficient by the efficiency
calculation for space heating. For lower tank boiler hysteresis values, the system
switches more often between the two operation modes. Higher hysteresis values
lead to an increase in boiler operation and the space heating support starts only at
higher tank temperatures.
t
HP!
[7-0D]
3°C
[6-00]
T
B off
T
set
T
HP on
!
P
H
!
B
B:on
B:on
Support
B:OK
Preheat
HP
tank
HP
tank
HP
SH
HP
SH
Tank
SH
T
tank
B
Boiler
HP
Heat pump
HP
tank
Tank heating by heat pump
HP
SH
Space heating by heat pump
Tank
SH
Space heating by tank heating support
T
tank
Storage tank temperature
T
set
In this example: Tank setpoint (may differ depending on space heating setpoint)
T
B Off
Boiler off temperature (T
set
+3+[7‑0D])
T
HP on
HP tank heating ON temperature (Tank setpoint–[6‑00])
HP!
HP more efficient according to efficiency calculation for space heating
B!
Boiler more efficient according to efficiency calculation for space heating
B:on
Boiler on
B:OK
Boiler on allowed
Support
Tank state:
Support
Summary of Contents for ETSXB16E
Page 313: ......
Page 314: ......
Page 315: ......
Page 316: ...4P679467 1C 2023 07 Copyright 2022 Daikin Verantwortung f r Energie und Umwelt...