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Application guidelines
Installer reference guide
52
EWSAH/X06D
Daikin Altherma 3 WS
4P675764-1 – 2022.04
NOTICE
It is possible to install a field fuse with lower than recommended rating over the heat
pump. For this you must modify field setting [2‑0E] according to the maximum
allowed current over the heat pump.
Note that field setting [2‑0E] overrules all power consumption control settings.
Power limiting the heat pump will reduce performance.
6.6.1 Permanent power limitation
Permanent power limitation is useful to assure a maximum power or current input
of the system. In some countries, legislation limits the maximum power
consumption for space heating and DHW production.
P
i
t
DI
a
b
P
i
Power input
t
Time
DI
Digital input (power limitation level)
a
Power limitation active
b
Actual power input
Setup and configuration
▪
No additional equipment needed.
▪
Set the power consumption control settings in [9.9] via the user interface (see
-
Select continuous limitation mode
-
Select the type of limitation (power in kW or current in A)
-
Set the desired power limitation level
6.6.2 Power limitation activated by digital inputs
Power limitation is also useful in combination with an energy management system.
The power or current of the entire Daikin system is limited dynamically by digital
inputs (maximum four steps). Each power limitation level is set via the user
interface by limiting one of the following:
▪
Current (in A)
▪
Power input (in kW)
The energy management system (field supply) decides the activation of a certain
power limitation level.
Example:
To limit the maximum power of the entire house
(lighting, domestic appliances, space heating…).
