9 | LAN adapter
Installer reference guide
124
EGSAH/X06+10UDA9W
Daikin Altherma 3 GEO
4P598592-1A – 2019.12
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.
9.5.2 Operation modes
"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.
"Recommended ON" mode
In the "Recommended ON" operation mode, the heat pump 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 heat pump 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).
"Forced OFF" mode
In the "Forced OFF" operation mode, the solar inverter/energy management
system triggers the system to deactivate the operation of the unit’s 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.
"Forced ON" mode
In the "Forced ON" operation mode, the heat pump 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
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