Control Point - Carrier SmartVu control Manual

6 - STANDARD CONTROL OPERATIONS AND OPTIONS

6.8 - Control point

The control point represents the water temperature that the unit
must produce. The required capacity can be decreased depending
on the unit load operating conditions.
Control point = Active setpoint + Reset
The control point is calculated based on the active setpoint and
the reset calculation. The forced value can be used instead of any
other setpoint calculation only when the unit is in the Network
operating type.
To verify the control point
1. Navigate to the Main menu.
2. Select General Parameters (GENUNIT).
3. Verify Control Point [CTRL_PNT].
Control Point [CTRL_PNT]
-20.0 to 67.0°C
-4.0 to 153.0°F
LOCAL OPERATING TYPE
Heating/Cooling Setpoint selection (Local)
Cooling sp-1
Cooling sp-2
Cooling auto
Cooling auto
Heating sp-1
Heating sp-2
Heating auto
Heating auto
REMOTE OPERATING TYPE
Heating/Cooling Setpoint selection (Local)
Cooling -
Cooling -
Cooling -
Cooling -
Heating -
Heating -
Heating -
Heating -
NETWORK OPERATING TYPE
Heating/Cooling Setpoint selection (Local)
Cooling sp-1
Cooling sp-2
Cooling auto
Cooling auto
Cooling auto
Heating sp-1
Heating sp-2
Heating auto
Heating auto
Heating auto
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6.8.1 - Active setpoint
Two setpoints can be selected, where the first setpoint is used
during occupied periods, whereas the second one is used during
unoccupied periods.
Depending on the current operation type, the active setpoint can
be selected manually via the Main menu on the user interface,
with the volt-free user contacts, with network commands (CCN,
BACnet, Modbus) or automatically with the setpoint time schedule
(schedule 2).
The following tables summarise possible selections depending on
the control operating type (Local, Remote or Network) and the
following parameters:
■ Heating or Cooling operating mode [HC_SEL]: Heat/Cool
select (GENUNIT – General Parameters).
■ Setpoint selection [sp_sel]: Setpoint select permits selection
of the active setpoint if the unit is in the Local operating type
(GENUNIT – General Parameters).
■ Setpoint switch status [SETP_SW]: Remote Setpoint Switch
(INPUTS – Inputs).
■ Occupied state of dual setpoint time schedule [SP_OCC]:
Schedule for setpoint selection.
Setpoint switch Schedule 2 status
- -
- -
- occupied
- unoccupied
- -
- -
- occupied
- unoccupied
Setpoint switch Schedule 2 status
sp1 -
sp2 -
auto occupied
auto unoccupied
sp1 -
sp2 -
auto occupied
auto unoccupied
Setpoint switch Schedule 2 status
- -
- -
- occupied
- unoccupied
- -
- -
- -
- occupied
- unoccupied
- -
Active setpoint
Cooling setpoint 1
Cooling setpoint 2
Cooling setpoint 1
Cooling setpoint 2
Heating setpoint 1
Heating setpoint 2
Heating setpoint 1
Heating setpoint 2
Active setpoint
Cooling setpoint 1
Cooling setpoint 2
Cooling setpoint 1
Cooling setpoint 2
Heating setpoint 1
Heating setpoint 2
Heating setpoint 1
Heating setpoint 2
Active setpoint
Cooling setpoint 1
Cooling setpoint 2
Cooling setpoint 1
Cooling setpoint 2
Cooling setpoint 2
Heating setpoint 1
Heating setpoint 2
Heating setpoint 1
Heating setpoint 2
Heating setpoint 2