Power consumption control
EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688013-1C – 2023.05
Free running:
The Smart Grid function is NOT active.
Forced off:
▪
The unit forces OFF the compressor and the backup heater.
▪
The protective functions (water pipe freeze prevention, drain prevention, room
frost protection) and defrost are NOT overruled (capacity will not be limited for
these functions)
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 room will heat up or cool down to the comfort setpoint.
▪
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...
Available
Not available
▪
The protective 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.
Emergency mode. In case emergency mode is active, buffering with electrical
heater is NOT possible in Forced on and Recommended on operation modes.
Power consumption control
See
"6 Application
guidelines" [
functionality.
#
[9.9.1]
[4-08]
Decided by the unit based on the input
of the Smart Grid pulse meter.
Decided by [9.8.8] Limit setting
kW
4
24] for detailed information about this
Code
Power consumption control:
▪
0 No: Disabled.
▪
1 Continuous: Enabled: You can set one
power limitation value (in A or kW) to which
the system power consumption will be
limited for all the time.
▪
2 Inputs: Enabled: You can set up to four
different power limitation values (in A or kW)
to which the system power consumption will
be limited when the corresponding digital
input asks.
10
Configuration
|
Then the limit is...
Description
Installer reference guide
169
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