Power Limitation Process - Daikin Altherma 3 M Installer's Reference Manual

6.6.3 Power limitation process

EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
4P620241-1 – 2020.06
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)
▪ Specification of the digital inputs:
- DI1: S9S (limit 1)
- DI2: S8S (limit 2)
- DI3: S7S (limit 3)
- DI4: S6S (limit 4)
▪ Refer to the wiring diagram for more information.
Configuration
▪ Set the power consumption control settings in [9.9] via the user interface (for the
description of all settings, see
- Select limitation by digital inputs.
- Select the type of limitation (power in kW or current in A).
- Set the desired power limitation level corresponding to each digital input.
INFORMATION
In case more than 1 digital input is closed (at the same time), the digital input priority
is fixed: DI4 priority>...>DI1.
The outdoor unit has better efficiency than the electrical heaters. Therefore, the
electrical heaters are limited and turned OFF first. The system limits power
consumption in the following order:
1 Limits certain electrical heaters.
If... has priority
Domestic hot water production
Space heating
2 Turns OFF all electrical heaters.
3 Limits the outdoor unit.
4 Turns OFF the outdoor unit.
Example
If the configuration is as follows:
▪ Power limitation level does NOT allow operation of both booster heater and
backup heater (step 1 and step 2).
▪ Priority heater = Booster heater (if applicable).
6
|
"Power consumption control" [
Then set the priority heater via the
user interface to...
Booster heater (if applicable)
Result: The backup heater will be
turned OFF first.
Backup heater
Result: The booster heater (if
applicable) will be turned OFF first.
Application guidelines
4
204]):
Installer reference guide
61