5 Application guidelines
Installer reference guide
18
ERLQ004~008CA + 08S18CA3VF
Daikin Altherma low temperature split
4P3662261 – 2014.01
Example
Singlephase power meter
b
580
1 50
0
0
c
c
f
e
d
g
A
B
C
a
A
Outdoor unit
B
Indoor unit
C
DHW tank
a
Electrical cabinet (L
1
/N)
b
Power meter (L
1
/N)
c
Fuse (L
1
/N)
d
Outdoor unit (L
1
/N)
e
Indoor unit (L
1
/N)
f
Backup heater (L
1
/N)
g
Booster heater (L
1
/N)
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 threephase 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 18
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 and backup
heater).
Setup
▪ Connect power meter 1 to X5M/7 and X5M/8.
▪ Connect power meter 2 to X5M/9 and X5M/10.
Power meter types
Singlephase power meter.
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 and 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
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.
NOTICE
Set a minimum power consumption of ±3 kW to guarantee
space heating and DHW production by allowing at least
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)
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