Power Limitation Process - Daikin ETBH16E9W Installer's Reference Manual

6.6.3 Power limitation process

EPRA14~18D + ETBH/X16E
Daikin Altherma 3 H HT W
4P644736-1D – 2023.10
▪ 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).
Then power consumption is limited as follows:
6 Application guidelines
|
"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.
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