Daikin Altherma EJHA04AAV3 Installer's Reference Manual page 59

INFORMATION
The tank can be heated via the gas boiler or heat pump.
NOTICE
If a domestic hot water pump for instant hot water is
present in the system ([D‑02]=1), scaling of the boiler heat
exchanger can occur faster due to more frequent domestic
hot water operation.
In case of [E‑06]=1
Domestic hot water pump installed for...
Instant hot water
a b c
e
f
d
a Outdoor unit
b Gas boiler
c Tank
d Cold water
e Shower
f Domestic hot water pump
g Heater element
h Non‑return valve
INFORMATION
The correct domestic hot water default settings become
only applicable when domestic hot water operation is
activated ([E‑05]=1).
Thermostats and external sensors
External room thermostat control is only applicable in case of
EHY2KOMB28+32AA gas boiler.
# Code
[A.2.2.4] [C-05] Contact type main
In external room thermostat control, the
contact type of the optional room
thermostat or heat pump convector for
the main leaving water temperature zone
must be set. See
guidelines" on
▪ 1 (Thermo ON/OFF): The connected
external room thermostat or heat
pump convector sends the heating
demand to the EHY2KOMB28+32AA
gas boiler (X4/6). Select this value in
case of a connection to the heat pump
convector (FWXV).
▪ 2
external room thermostat sends a
heating demand and is connected to
the digital input (preserved for the
main leaving water temperature zone)
on
boiler (X4/6). Select this value in case
of
(EKRTWA) or wireless (EKRTR1)
room thermostat.
EJHA04AAV3 + EHY2KOMB28+32AA
Daikin Altherma Hybrid hydrosplit heat pump
4P531180-1 – 2018.06
Disinfection
a b c
f
g e
h d
Description
"7 Application
page 17.
(H/C request): The connected
the EHY2KOMB28+32AA gas
connection with the wired
# Code
[A.2.2.B] [C-08] External sensor
When an optional external ambient
sensor is connected, the type of the
sensor must be set. See
guidelines" on
▪ 0 (No): NOT installed. The thermistor
in the user interface and in the heat
pump
measurement.
▪ 1 (Outdoor sensor): Installed. The
outdoor
measure
temperature.
functionality, the temperature sensor
in the outdoor unit is still used.
▪ 2 (Room sensor): NOT applicable.
Savings mode
The user can choose whether switching between operation modes is
either economically or ecologically optimised. Set to Economical, the
system will in all operating conditions select the energy source (gas
or electricity) based on energy prices, resulting in a minimisation of
energy costs. Set to Ecological, the heat source will be selected
based on ecological parameters, resulting in a minimisation of
primary energy consumption.
# Code
[A.6.7] [7‑04] Defines whether switching between
operation modes is either economically
or ecologically optimised.
▪ 0 (Economical): reduction of energy
costs
▪ 1 (Ecological): reduction of primary
energy
necessarily energy costs
Primary energy factor
The primary energy factor indicates how many units of primary
energy (natural gas, crude oil, or other fossil fuels, prior to
undergoing any human-made conversions or transformations) are
needed to obtain 1 unit of a certain (secondary) energy source, such
as electricity. The primary energy factor for natural gas is 1.
Assuming an average electricity production efficiency (including
transportation losses) of 40%, the primary energy factor for
electricity equals 2.5 (=1/0.40). The primary energy factor allows you
to compare 2 different energy sources. In this case, the primary
energy use of the heat pump is compared to the natural gas use of
the gas boiler.
# Code
N/A [7‑03] Compares the primary energy use of the
heat pump with that of the boiler.
Range: 0~6
INFORMATION
▪ The primary energy factor can always be set, but is
only used in case the savings mode is set to
Ecological.
▪ To set electricity price values, do NOT use overview
settings. Set them in the menu structure instead
([7.4.5.1], [7.4.5.2], and [7.4.5.3]). For more information
on how to set the energy prices, see the operation
manual and the user reference guide.
10 Configuration
Description
"7 Application
page 17.
module are used for
sensor will be used to
the outdoor ambient
Remark: For some
Description
consumption, but not
Description
Installer reference guide
59