Daikin Altherma 3 WS EWSAH06UD 9W Series Installer's Reference Manual page 206

11 | Configuration
Installer reference guide
206
Formula
COP = (Electricity price / gas 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. For an example, see the table
legend.
COP
6
5
4
3
2
1
0
-14 -12 -10 -8 -6
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 prices
INFORMATION
Electricity price can only be set when bivalent is ON ([9.C.1] or [C-02]). These values
can only be set in menu structure [7.5.1], [7.5.2] and [7.5.3]. Do NOT use overview
settings.
INFORMATION
Solar panels. If solar panels are used, set the electricity price value very low to
promote the use of the heat pump.
# Code
[7.5.1] N/A
[7.5.2] N/A
[7.5.3] N/A
Boiler efficiency
Depending on the used boiler, this should be chosen as follows:
(a)
× If:
▪ Electricity price: 20 c€/kWh
▪ Gas price: 6 c€/kWh
▪ Boiler efficiency: 0.9
Then: COP = (20/6)×0.9 = 3
-4 -2 0 2 4 6 8 10
2.5 (a) 10.5 (b)
User settings > Electricity price >
High
User settings > Electricity price >
Medium
User settings > Electricity price >
Low
Example
12 14
Description
Daikin Altherma 3 WS
4P675765-1 – 2022.04
EWSAH/X06UD