Permanent Power Limitation; Power Limitation Activated By Digital Inputs - Daikin EWYA004D2V3P Installer's Reference Manual

6 | Application guidelines

6.5.1 Permanent power limitation

6.5.2 Power limitation activated by digital inputs

Installer reference guide
44
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.
P
i
a
DI
P Power input
i
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
"Power consumption
- Select continuous limitation mode
- Select the type of limitation (power in kW or current in A)
- Set the desired power limitation level
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...).
C
a
5
4
3
A8P
2
1
b
A B
A Outdoor unit
B External backup heater kit
C Energy management system
a Power limitation activation (4 digital inputs)
b Backup heater
b
t
4
control" [ 169]):
EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688013-1B – 2022.09