8.4 - Control point
The control point represents the water temperature that the unit
must produce. The control point calculation is based on the active
setpoint and its reset.
control point = active se reset
The heat exchanger entering water temperature is controlled by
default, but the heat exchanger leaving water temperature can
also be controlled (service configuration is required).
8.4.1 - Active setpoint
Three setpoints can be selected as active in Cooling mode and
two setpoints in Heating mode.
Setpoint 1
Setpoint 2
Setpoint 3
Cooling
Occupied period
Unoccupied period
Ice storage
cooling setpoint
Heating
Occupied period
Unoccupied period
-
The first cooling/heating setpoint is normally used during occupied
periods, whereas the second cooling/heating setpoint is used
during unoccupied periods. The third cooling setpoint is used for
ice storage.
Depending on the current operating type, the active setpoint can
be selected:
-
By choosing the active setpoint in the General Parameters
menu (Setpoint Select, GENUNIT).
-
Via the volt-free contacts (see section 4.7).
-
Via network commands [SP_SEL].
-
Via the schedule setting – schedule 2 (OCCPC02S).
Mode
Setpoint control
Local
Regardless of the current setpoint schedule, the user can select
the setpoint manually via the control interface (Setpoint Select,
GENUNIT).
Remote
If the setpoint switch is used once, the setpoint schedule control
will be cancelled (setpoint control will be based on setpoint
switch only).
Network
Regardless of the current setpoint schedule, the user can select
the setpoint manually via the control interface (Setpoint Select,
GENUNIT) or the service tool. Once the forced selection is
deactivated, the setpoint schedule will be used again.
The following tables summarise the possible setpoint selections
based on the control type (local, remote, network) and the following
parameters:
-
Heating/Cooling operating mode.
-
Setpoint select.
-
Setpoint selection contact status.
-
Schedule 2 status for setpoint selection.
8 - STANDARD CONTROL OPERATIONS AND OPTIONS
Local operating mode
Parameters status
Active setpoint
Heat/Cool
[hc_sel]
Setpoint
[sp_sel]
Ice mode enabled
[Ice_cnfg]
Ice done switch
[Ice_sw]
Setpoint switch
[setp_sw]
Setpoint occupancy
[sp_occ]
cool
sp-1
-
*
*
-
cooling setpoint 1
cool
sp-2
no
*
*
-
cooling setpoint 2
cool
sp-2
yes
close
*
cooling setpoint 2
cool
sp-2
yes
open
*
ice setpoint
cool
auto
-
*
*
occupied
cooling setpoint 1
cool
auto
no
*
*
unoccupied
cooling setpoint 2
cool
auto
yes
close
*
unoccupied
cooling setpoint 2
cool
auto
yes
open
*
unoccupied
ice setpoint
heat
sp-1
-
*
*
-
heating setpoint 1
heat
sp-2
-
*
*
-
heating setpoint 2
heat
auto
-
*
*
occupied
heating setpoint 1
heat
auto
-
*
*
unoccupied
heating setpoint 2
(*) any configuration, (-) default configuration
Remote operating mode
Parameters status
Active setpoint
Heat/Cool
[hc_sel]
Setpoint
[sp_sel]
Ice mode enabled
[Ice_cnfg]
Ice done switch
[Ice_sw]
Setpoint switch
[setp_sw]
Setpoint occupancy
[sp_occ]
cool
-
-
*
open
-
cooling setpoint 1
cool
-
no
*
close
-
cooling setpoint 2
cool
yes
close
close
cooling setpoint 2
cool
-
yes
open
close
-
ice setpoint
heat
-
-
*
open
-
heating setpoint 1
heat
-
-
*
close
-
heating setpoint 2
(*) any configuration, (-) default configuration
Network operating mode
Parameters status
Active setpoint
Heat/Cool
[hc_sel]
Setpoint
[sp_sel]
Ice mode enabled
[Ice_cnfg]
Ice done switch
[Ice_sw]
Setpoint switch
[setp_sw]
Setpoint occupancy
[sp_occ]
cool
-
-
*
*
occupied
cooling setpoint 1
cool
-
-
*
*
unoccupied
cooling setpoint 2
heat
-
-
*
*
occupied
heating setpoint 1
heat
-
-
*
*
unoccupied
heating setpoint 2
(*) any configuration, (-) default configuration
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