
8 Smart Grid application
Installer reference guide
19
BRP069A61+BRP069A62
Daikin Altherma LAN adapter
4P464229-1B – 2018.10
IF THEN
Static power limitation
(Static power limitation)
The power consumption of the
indoor unit is limited statically
based on a fixed value (default
1.5kW) that is set in the
configuration web interface.
During energy buffering, the
power consumption of the indoor
unit will NOT exceed this limit.
The value for this setting is only
used if the system does not
include an electricity meter (on
the configuration web interface:
Pulse meter setting: "No meter").
Otherwise, make use of dynamic
power limitation.
Dynamic power limitation
(Pulse meter setting)
The power limitation is auto-
adaptive, and dynamically
performed based on the power
injection into the grid, measured
by the electricity meter. To
minimise the power injection into
the grid, the indoor unit operates
as much as possible.
INFORMATION
When using an electricity meter for dynamic power
limitation, it is recommended to set it to 100 pulse/kWh or
1000 pulse/kWh (i.e. Pulse meter setting on the
configuration web interface).
INFORMATION
▪ In the "Forced ON" operation mode, energy buffering
happens WITHOUT power limitation.
▪ To get the most out of the energy buffering it is
recommended to make use of dynamic power limitation
by way of an electricity meter.
▪ The electrical heaters will ONLY operate when the
power limitation is higher than the power rating of the
heaters.
▪ For ERLQ011~016 and EBLQ
+EDLQ011~016CA(3)V3+W1 outdoor units, the power
limitation functionality is NOT available. When these
outdoor units are used in a Smart Grid system, they will
operate without power limitation. Electrical heater
assistance, however, will be disabled.
WARNING
Make sure to connect the electricity meter in the correct
direction, so that it measures the total energy injected
INTO the grid.
INFORMATION
▪ For dynamic power limitation to be possible, a single
connection point to the grid is required (one connection
point for the photovoltaic system AND the domestic
appliances). To function properly, the Smart Grid
algorithm requires the net sum of generated AND
consumed energy. The algorithm will NOT work when
there are separate meters for generated energy and
consumed energy.
▪ Since dynamic power limitation is performed based on
electricity meter input, you do NOT have to set the
power limitation value in the configuration web
interface.
8.2 Operation modes
8.2.1 "Normal operation/Free running" mode
In the "Normal operation"/"Free running" operation mode, the indoor
unit operates as normal, according to its owner's settings and
schedules. No Smart Grid functionalities are enabled.
8.2.2 "Recommended ON" mode
In the "Recommended ON" operation mode, the Daikin Altherma
system makes use of solar/grid power (when it is available, as
measured by the solar inverter/energy management system) to
produce domestic hot water and/or heat up or cool down the space.
The amount of solar/grid power that is used for buffering depends on
the domestic hot water tank and/or the room temperature. To align
solar/grid capacity and the power consumption by the Daikin
Altherma system, the power consumption of the indoor unit is limited
either statically (by a fixed value set in the configuration web
interface) or dynamically (auto-adaptively, as measured by the
electricity meter – if part of the system layout).
8.2.3 "Forced OFF" mode
In the "Forced OFF" operation mode, the solar inverter/energy
management system trigger the system to deactivate the operation
of the outdoor unit compressor and the electrical heaters. This is
especially useful in case of energy management systems that react
to high energy tariffs, or in case of grid overload (signaled by the
energy distributor to the energy management system). Once active,
"Forced OFF" mode will cause the system to stop space heating/
cooling, as well as domestic hot water production.
INFORMATION
Once running in one of the Smart Grid operation modes,
the system will keep running in that mode until the input
state of the LAN adapter is changed. Beware that if the
system runs in "Forced OFF" mode for a long time, comfort
issues can occur.
8.2.4 "Forced ON" mode
In the "Forced ON" operation mode, the Daikin Altherma system
makes use of solar/grid power (when it is available, as measured by
the solar inverter/energy management system) to produce domestic
hot water and/or heat up or cool down the space. The amount of
solar/grid power that is used for buffering depends on the domestic
hot water tank and/or the room temperature. In contrast to the
"Recommended ON" operation mode, there is NO power limitation:
the system selects the comfort setpoint for space heating/cooling,
and will heat up the domestic hot water tank to the maximum
temperature. The outdoor unit compressor and the electrical heaters
are not limited in their power consumption.
The "Forced ON" operation mode is particularly useful in case of
energy management systems that react to low energy tariffs, in case
of grid overload (signaled by the energy distributor to the energy
management system), or when multiple houses are connected to the
grid that are controlled simultaneously, this to stabilise the grid.
INFORMATION
Once running in one of the Smart Grid operation modes,
the system will keep running in that mode until the input
state of the LAN adapter is changed.