Daikin EPRA08EAV3, Installer'S Reference Manual

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6 | Application guidelines
Installer reference guide
58
EPRA08~W1 + ETVH/9W
Daikin Altherma 3 H MT F
4P634886-1 – 2021.03
Setup and configuration
▪ No additional equipment needed.
▪ Set the power consumption control settings in [9.9] via the user interface (see
"Power consumption control" [ 4 204]):
- 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…).
a
b
A B
C
1
2
3
4
5
A8P
A Outdoor unit
B Indoor unit
C Energy management system
a Power limitation activation (4 digital inputs)
b Backup heater
P
i
t
DI4
DI3
DI1
a
b
P
i
Power input
t Time
DI Digital inputs (power limitation levels)
a Power limitation active
b Actual power input
Setup
▪ Demand PCB (option EKRP1AHTA) needed.
▪ Maximum four digital inputs are used to activate the corresponding power
limitation level:
- DI1 = strongest limitation (lowest energy consumption)
- DI4 = weakest limitation (highest energy consumption)