5
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Application guidelines
Installer reference guide
49
EPGA11~ EAV23DA6V
Daikin Altherma 3 H F
4P606487-1 – 2019.12
▪
Maximum four digital inputs are used to activate the corresponding power
limitation level:
-
DI1 = weakest limitation (highest energy consumption)
-
DI4 = strongest limitation (lowest energy consumption)
▪
For the specifications of the digital inputs, and for where to connect them, refer
to the wiring diagram.
Configuration
▪
Set the power consumption control settings in [9.9] via the user interface (for the
description of all settings, see
158]):
-
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.
5.6.3 Power limitation process
The outdoor unit has better efficiency than the electrical heater. Therefore, the
electrical heater is limited and turned OFF first. The system limits power
consumption in the following order:
1
Turns OFF the backup heater.
2
Limits the outdoor unit.
3
Turns OFF the outdoor unit.
Example
If the configuration is as follows: Power limitation level does NOT allow operation
of backup heater (step 1).
Then power consumption is limited as follows:
P
h
C
e
a
b
c
A
B
P
h
Produced heat
C
e
Consumed energy Consumed energy
A
Outdoor unit
B
Backup heater
a
Limited outdoor unit operation
b
Full outdoor unit operation
c
Backup heater step 1 turned ON
5.7 Setting up an external temperature sensor
You can connect one external temperature sensor. It measures the indoor or
outdoor ambient temperature. We recommend to use an external temperature
sensor in the following cases:
