5
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Application guidelines
Installer reference guide
51
EPRA14~W1 + ETVH/9W(G)
Daikin Altherma 3 H HT F
4P587502-1A – 2020.01
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
184]):
-
Select continuous limitation mode
-
Select the type of limitation (power in kW or current in A)
-
Set the desired power limitation level
NOTICE
Set a minimum power consumption of ±3.6 kW to guarantee:
▪
Defrost operation. Otherwise, if defrosting is interrupted several times, the heat
exchanger will freeze up.
▪
Space heating and DHW production by allowing the backup heater step 1.
5.6.2 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
Summary of Contents for Altherma 3 H HT EPRA14DAW1
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