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#
Code
N/A
[C-04]
Range: 2°C~10°C (step: 1°C)
The higher the value of [C‑04], the higher
the accuracy of the switch-over between
the outdoor unit and the gas boiler.
To determine the value of [C‑03], proceed as follows:
1 Determine the COP (= coefficient of performance) using the
formula:
Formula
COP = (Electricity price / gas
(a)
price)
× boiler efficiency
(a)
Make sure to use the same units of measurement for the
electricity price and gas price (example: both c€/kWh).
2 Determine the value of [C‑03] using the graph:
COP
6
5
4
3
2
1
0
-14
-12
-10
-8
-6
-4
-2
Example:
a
[C‑03]=2.5 in case of COP=3 and LWT=35°C
b
[C‑03]=10.5 in case of COP=3 and LWT=55°C
NOTICE
Make sure to set the value of [5‑01] at least 1°C higher
than the value of [C‑03].
Electricity and gas prices
INFORMATION
To set electricity and gas price values, do NOT use
overview settings. Set them in the menu structure instead
([7.4.5.1], [7.4.5.2], [7.4.5.3], and [7.4.6]). For more
information on how to set the energy prices, see the
operation manual and the user reference guide.
INFORMATION
Solar panels. If solar panels are used, set the electricity
price value very low to promote the use of the heat pump.
#
Code
[7.4.5.1]
N/A
What is the high electricity
price?
[7.4.5.2]
N/A
What is the medium electricity
price?
[7.4.5.3]
N/A
What is the low electricity
price?
[7.4.6]
N/A
What is the fuel price?
Bottom plate heater
Applies only when the option bottom plate heater kit is installed.
EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1A – 2019.05
Description
Example
If:
▪ Electricity price: 20 c€/kWh
▪ Gas price: 6 c€/kWh
▪ Boiler efficiency: 0.9
Then: COP = (20/6)×0.9 = 3
0
2
4
6
8
10
12
14
2.5 (a)
10.5 (b)
Description
▪ [F-02] Bottom plate heater ON temperature: defines the outdoor
temperature below which the bottom plate heater will be activated
by the outdoor unit in order to prevent ice build-up in its bottom
plate at lower outdoor temperatures.
▪ [F-03] Bottom plate heater hysteresis: defines the temperature
difference between bottom plate heater ON temperature and the
bottom plate heater OFF temperature.
Bottom plate heater
a
[F-03]
b
T
A
[F-02]
T
Outdoor temperature
A
a
On
b
OFF
#
Code
N/A
[F-02]
Bottom plate heater ON temperature:
3°C~10°C
N/A
[F-03]
Hysteresis: 2°C~5°C
Equilibrium temperature
Based on the ambient temperature, energy prices and the required
leaving water temperature, the user interface is able to calculate
which heat source can deliver the required heating capacity most
efficiently. However, to maximise the energy output of the heat
pump, it is possible to prevent the gas boiler from operating when
the ambient temperature exceeds a certain point (e.g. 5°C). This can
be useful to avoid too much gas boiler operation in case of incorrect
settings. When an equilibrium temperature is set, domestic hot water
operation is NEVER prohibited.
#
Code
N/A
[5‑00]
Defines if gas boiler operation is allowed
when the ambient temperature exceeds
the set equilibrium temperature during
space heating operation.
▪ 0: allowed.
▪ 1: NOT allowed.
N/A
[5‑01]
Equilibrium temp.
When the ambient temperature is higher
than this temperature, the gas boiler is
NOT allowed to work. Only applicable if
[5‑00] is set to 1.
Range: –14°C~35°C
NOTICE
In case of third-party gas boiler:
▪ To allow more heat pump operation, it is highly
recommended NOT to change the default setting of
[5‑00], and keep the value at "1".
▪ If there is a capacity shortage, you can allow more gas
boiler operation by increasing [5‑01].
▪ Make sure to set the value of [5‑01] at least 1°C higher
than the value of [C‑03].
Boiler only ambient temperature
#
Code
Boiler only ambient temp
[A.5.2.3]
[8-0E]
When the ambient temperature is lower
than this temperature, the heat pump is
NOT allowed to work.
Range: –14°C~25°C
10 Configuration
Description
Description
Description
Installer reference guide
67
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