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Configuration
Installer reference guide
227
ERGA04~V3A+V37 + EHSH/X(B)04+08P30+50EF
Daikin Altherma 3 R ECH₂O
4P678716-1A – 2022.07
To determine the value of [C‑03], proceed as follows:
1
Determine the COP (= coefficient of performance) using the formula:
Formula
Example
COP = (Electricity price / gas price)
(a)
×
boiler efficiency
If:
▪
Electricity price: 20 c€/kWh
▪
Gas price: 6 c€/kWh
▪
Boiler efficiency: 0.9
Then: COP=(20/6)×0.9=
3
(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.
-14
0
1
2
3
4
5
6
-12
-10
-8
-6
-4
-2
0
2
4
6
8
10
12
14
COP
10.5 (b)
2.5 (a)
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].
For DHW heating switch-over:
The heat pump system calculates a value T
lim
based on outdoor temperature and
COP as defined above. When storage tank temperature reaches T
lim
, the boiler is
set as primary heat source. Whether the boiler will be activated depends on the
intelligent tank management settings.
Electricity and gas prices, PE factor [7-03]
INFORMATION
To set electricity and gas price values, do NOT use overview settings. Set them in the
menu structure instead ([7.5.1], [7.5.2], [7.5.3], and [7.6]). 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
Description
[7.5.1]
N/A
User settings
>
Electricity price
>
High
[7.5.2]
N/A
User settings
>
Electricity price
>
Medium
