Control Point - Carrier Touch Pilot Control Series Control Manual

8 - STANDARD CONTROL OPERATIONS AND OPTIONS

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 setpoint + 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
Cooling Occupied period
Heating Occupied 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.
Local operating mode
Heat/Cool Setpoint
[hc_sel] [sp_sel]
cool sp-1
cool sp-2
cool sp-2
cool sp-2
cool auto
cool auto
cool auto
cool auto
heat sp-1
heat sp-2
heat auto
heat auto
(*) any configuration, (-) default configuration
Remote operating mode
Heat/Cool Setpoint
[hc_sel] [sp_sel]
cool -
cool -
cool
cool -
heat -
heat -
(*) any configuration, (-) default configuration
Network operating mode
Heat/Cool Setpoint
[hc_sel] [sp_sel]
cool -
cool -
heat -
heat -
(*) any configuration, (-) default configuration
26
Setpoint 2 Setpoint 3
Ice storage
Unoccupied period
cooling setpoint
Unoccupied period -
Parameters status
Ice mode enabled Ice done switch
[Ice_cnfg] [Ice_sw]
-
no
yes close
yes open
-
no
yes close
yes open
-
-
-
-
Parameters status
Ice mode enabled Ice done switch
[Ice_cnfg] [Ice_sw]
-
no
yes close
yes open
-
-
Parameters status
Ice mode enabled Ice done switch
[Ice_cnfg] [Ice_sw]
-
-
-
-
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
Regardless of the current setpoint schedule, the user can select
Local the setpoint manually via the control interface (Setpoint Select,
GENUNIT).
If the setpoint switch is used once, the setpoint schedule control
Remote will be cancelled (setpoint control will be based on setpoint
switch only).
Regardless of the current setpoint schedule, the user can select
the setpoint manually via the control interface (Setpoint Select,
Network
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.
Setpoint switch
[setp_sw]
* *
* *
*
*
* *
* *
*
*
* *
* *
* *
* *
Setpoint switch
[setp_sw]
* open
* close
close
close
* open
* close
Setpoint switch
[setp_sw]
* *
* *
* *
* *
Active setpoint
Setpoint occupancy
[sp_occ]
- cooling setpoint 1
- cooling setpoint 2
cooling setpoint 2
occupied cooling setpoint 1
unoccupied cooling setpoint 2
unoccupied cooling setpoint 2
unoccupied
- heating setpoint 1
- heating setpoint 2
occupied heating setpoint 1
unoccupied heating setpoint 2
Active setpoint
Setpoint occupancy
[sp_occ]
- cooling setpoint 1
- cooling setpoint 2
cooling setpoint 2
-
- heating setpoint 1
- heating setpoint 2
Active setpoint
Setpoint occupancy
[sp_occ]
occupied cooling setpoint 1
unoccupied cooling setpoint 2
occupied heating setpoint 1
unoccupied heating setpoint 2
ice setpoint
ice setpoint
ice setpoint