Preferential Kwh Rate Power Supply; Setting Up The Power Consumption Control; Permanent Power Limitation - Daikin ERLQ004CA Installer's Reference Manual

In case of...
In other cases (i.e. a three-phase
outdoor unit and/or a *9W
backup heater model connected
to a three-phase grid)
Example
Single-phase power meter
0 0
58 0
1 5 0
a
b
c c
d e f g
A B C
A Outdoor unit
B Indoor unit
C DHW tank
a Electrical cabinet (L /N)
1
b Power meter (L /N)
1
c Fuse (L /N)
1
d Outdoor unit (L /N)
1
e Indoor unit (L /N)
1
f Backup heater (L /N)
1
g Booster heater (L /N)
1
Exception
▪ You can use a second power meter if:
▪ The power range of one meter is insufficient.
▪ The electrical meter cannot easily be installed in the electrical
cabinet.
▪ 230 V and 400 V three-phase grids are combined (very
uncommon), because of technical limitations of power meters.
▪ Connection and setup:
▪ Connect the second power meter to X5M/9 and X5M/10.
▪ 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 21
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, backup heater
and optional booster heater).
Setup
▪ Connect power meter 1 to X5M/7 and X5M/8.
▪ Connect power meter 2 to X5M/9 and X5M/10.
ERLQ004~008CA + EHBH/X04+08CB
Daikin Altherma – Low temperature split
4P384972-1B – 2017.04
Use a... power meter
Three-phase
Three-phase power meter
0 0
58 0
1 5 0
a
b
  
 
c c d
e f g h
A B C
A Outdoor unit
B Indoor unit
C DHW tank
a Electrical cabinet (L /L /L /N)
1 2 3
b Power meter (L /L /L /N)
1 2 3
c Fuse (L /L /L /N)
1 2 3
d Fuse (L /N)
1
e Outdoor unit (L /L /L /N)
1 2 3
f Indoor unit (L /L /L /N)
1 2 3
g Backup heater (L /L /L /N)
1 2 3
h Booster heater (L /N)
1
for
5 Application guidelines
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 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:
0 0
0 58 0 0 58 0
1 5 0 1 5 0
a b
c d
  
 
e e f e
g h i j
A B C
A Outdoor unit
B Indoor unit
C DHW tank
a Electrical cabinet (L
supply
b Electrical cabinet (L
supply
c Power meter (L /N)
1
d Power meter (L /L
1
e Fuse (L /N)
1
f Fuse (L /L /L /N)
1 2 3
g Outdoor unit (L /N)
1
h Indoor unit (L /N)
1
i Backup heater (L
1
j Booster heater (L
1
5.6 Setting up the power consumption
control
▪ The power consumption control:
▪ Is only applicable for EHBH/X04+08 and EHVH/X04+08.
▪ Allows you to limit the power consumption of the entire system
(sum of outdoor unit, indoor unit, backup heater and optional
booster 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.
/N): Preferential kWh rate power
1
/L /L /N): Normal kWh rate power
1 2 3
/L /N)
2 3
/L /L /N)
2 3
/N)
Installer reference guide
21