17
The controller is congurable. The conguration depends on
the unit size and is made automatically at the start-up.
If the measured ow rate in the water loop is lower than the
congured ow rate, an alarm condition shuts off the unit.
5.7.1 - Active setpoint
Two setpoints can be selected. Usually, the second cooling
setpoint is used for unoccupied periods. Depending on the
current operation type, the active setpoint can be selected
by choosing the item in the table Status => Genunit, with the
volt-free user contacts, with network commands or with the
setpoint timer program (schedule 2).
The following tables summarise the possible selections
depending on the control types (local, remote or network)
and the following parameters:
• Setpoint select in local control: item “Setpoint select”
in the table Status => Genunit permits selection of the
active setpoint, if the unit is in local operating type.
• Control contacts 2: status of control contact 2.
• Schedule 2 status: schedule for setpoint selection.
The control point represents the water temperature that the
unit must satisfy.
In cooling mode the evaporator outlet water is controlled by
default, but the evaporator inlet water can also be controlled
(requires a Service conguration modication).
In heating mode the condenser outlet water is controlled by
default, but the condenser inlet water can also be controlled
(requires a Service conguration modication).
Control point = active setpoint + reset
in local mode
in remote mode
O - - - - Cooling
On Local Cooling - - Cooling
On Local Heating - - Heating
On Remote - On cooling - Cooling
On Remote - On heating - Heating
On Network - - Cooling Cooling
On Network - - Heating Heating
For units congured in the heat pump mode, heating/cooling
selection can be controlled in various ways, depending on
the active operating type:
• locally at the unit using the HC_SEL item in the
GENUNIT table,
• remotely via the heating/cooling selection contact, if
the unit is in the Remote mode operating type,
• via a CCN or BACnet/IP (option) network command,
if the unit is in the network operating type.
Schedule 2 status
Cooling csp 1 - - - Cooling setpoint 1
Cooling csp 2 - - - Cooling setpoint 2
Cooling auto Activated Open Unoccupied Ice storage setpoint
Cooling auto Activated Closed Unoccupied Cooling setpoint 2
Cooling auto - - Occupied Cooling setpoint 1
Cooling auto Deactivated - Unoccupied Heating setpoint 2
Heating hsp 1 - - - Heating setpoint 1
Heating hsp 2 - - - Heating setpoint 2
Heating auto - - Occupied Heating setpoint 1
Heating auto - - Unoccupied Heating setpoint 2
Control contact 2
Cooling
csp control - - - Control setpoint
Cooling
- - - csp 1 (open) Cooling setpoint 1
Cooling
- - - csp 2 (closed) Cooling setpoint 2
Cooling
- Activated - Open Cooling setpoint 1
Cooling
- Activated Open Closed Ice storage setpoint
Cooling
- Activated Closed Closed Cooling setpoint 2
Heating
- - - Open Heating setpoint 1
Heating
- - - Closed Heating setpoint 2
Schedule 2 status
Cooling - - - Occupied Cooling setpoint 1
Cooling - - - Unoccupied Cooling setpoint 2
Cooling - Activated Open Unoccupied Ice storage setpoint
Cooling - Activated Closed Unoccupied Cooling setpoint 2
Heating - - - Occupied Heating setpoint 1
Heating - - - Unoccupied Heating setpoint 2
* Only with energy management option
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