Daikin Altherma EHVH04S23DAV - Preferential Kwh Rate Power Supply; Setting up the Power Consumption Control; Permanent Power Limitation

5 Application guidelines
Installer reference guide
19
ERGA04~08DAV3(A) + EHVH04+08S23DAV
Daikin Altherma – Low temperature split
4P499573-1 – 2017.12
▪ Connection and setup:
▪ Connect the second power meter to X5M/3 and X5M/4.
▪ In the software the power consumption data of both meters is
added so you do NOT have to set which meter covers which
power consumption. You only need to set the number of pulses
of each power meter.
▪ See "5.5.4 Preferential kWh rate power supply" on page 19 for
an example with two power meters.
5.5.4 Preferential kWh rate power supply
General rule
▪ Power meter1: Measures the outdoor unit.
▪ Power meter 2: Measures the rest (i.e. indoor unit, optional
backup heater, and anti-legionella heater).
Setup
▪ Connect power meter1 to X5M/5 and X5M/6.
▪ Connect power meter2 to X5M/3 and X5M/4.
Power meter types
▪ Power meter 1: Single- or three-phase power meter according to
the power supply of the outdoor unit.
▪ Power meter2:
▪ In case of no backup heater or a single-phase backup heater
configuration, use a single-phase power meter.
▪ In other cases, use a three-phase power meter.
Example
Single-phase outdoor unit with a three-phase backup heater:
e efe
ihg
j
A B C
b
a
d

c
5
8
0
1
5
0
0
0
5
8
0
1
5
0
0
0
A Outdoor unit
B Indoor unit
C DHW tank
a Electrical cabinet (L
1
/N): Preferential kWh rate power
supply
b Electrical cabinet (L
1
/L
2
/L
3
/N): Normal kWh rate power
supply
c Power meter (L
1
/N)
d Power meter (L
1
/L
2
/L
3
/N)
e Fuse (L
1
/N)
f Fuse (L
1
/L
2
/L
3
/N)
g Outdoor unit (L
1
/N)
h Indoor unit (L
1
/N)
i Backup heater (L
1
/L
2
/L
3
/N)
j Anti-legionella heater (L
1
/N)
5.6 Setting up the power consumption
control
▪ The power consumption control:
▪ Allows you to limit the power consumption of the entire system
(sum of outdoor unit, indoor unit, anti-legionella heater, and
optional backup heater).
▪ Configuration: Set the power limitation level and how it has to
be achieved via the user interface.
▪ The power limitation level can be expressed as:
▪ Maximum running current (inA)
▪ Maximum power input (inkW)
▪ The power limitation level can be activated:
▪ Permanently
▪ By digital inputs
5.6.1 Permanent power limitation
Permanent power limitation is useful to assure a maximum power or
current input of the system. In some countries, legislation limits the
maximum power consumption for space heating and DHW
production.
P
i
t
DI
a
b
P
i
Power input
t Time
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 (for the description of all settings, see
"8Configuration"on page48):
▪ Select continuous limitation mode
▪ Select the type of limitation (power in kW or current in A)
▪ Set the desired power limitation level
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
D
1
2
3
4
5
A8P
A Outdoor unit
B Indoor unit
C DHW tank
D Energy management system
a Power limitation activation (4 digital inputs)
Final English - Tanslations in progress