11 | Configuration
Installer reference guide
170
EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620242-1 – 2020.06
Allowed heaters during preferential kWh rate power supply
Do NOT use 1 or 3. Setting [D-00] to 1 or 3 when [D-01] is set to 1 or 2 will reset
[D-00] back to 0, as the system does not have a booster heater. Only set [D-00] to
the values in the table below:
[D‑00] Backup heater Compressor
0 Forced OFF Forced OFF
2 Allowed
Smart Grid operation modes
The 2 incoming Smart Grid contacts (see "To connect a Smart Grid" [4 100]) can
activate the following Smart Grid modes:
Smart Grid contact [9.8.5] Smart grid operation
mode
0 0 Free running
0 1 Forced off
1 0 Recommended on
1 1 Forced on
Free running:
The Smart Grid function is NOT active.
Forced off:
▪ The unit forces OFF the compressor and the backup heater.
▪ The safety functions (water pipe freeze prevention, drain prevention, room frost
protection) and defrost are NOT overruled.
Recommended on:
▪ In case the space heating/cooling request is OFF, the unit can choose to buffer
energy from the photovoltaic panels in the room (only in case of room
thermostat control) instead of putting the photovoltaic panel energy on the grid.
The goal is to buffer the energy from the photovoltaic panels. Therefore, the
capacity of the unit is limited to what the photovoltaic panels are providing.
If Smart Grid pulse meter is… Then the limit is…
Available Decided by the unit based on the input
of the Smart Grid pulse meter.
Not available Decided by [9.8.8] Limit setting
kw
▪ The safety functions (water pipe freeze prevention, drain prevention, room frost
protection) and defrost are not overruled (capacity will not be limited for these
functions)
Forced on:
Similar to Recommended on, but there is no capacity limitation. The goal is NOT to
use the grid as much as possible.
Power consumption control
Power consumption control
See "6 Application guidelines" [4 27] for detailed information about this
functionality.
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