18 l Uponor Smatrix Base PRO Controller X-147 Modbus RTU interface l Installation manual
3.2 Controller limitations
Cooling state
An ordinary Base PRO system (with touch screen, not connected
to a BMS) uses an offset temperature to adjust the setpoints when
switching between heating and cooling. This setting is only available
via the touch screen interface (I-167), which is not installed when
connected to a BMS.
When connected to a BMS, and the heating/cooling state is set
to cooling, the cooling offset is set to 0 ˚C
(0 °F)
, leaving the zone
setpoints to be changed by the BMS.
ECO state
If the Base PRO system is set to ECO state the controller applies an
ECO setback value of 4 ˚C
(4 °F)
to the setpoints (which is shown in
the thermostats).
When the BMS reads the setpoint, when in ECO state, it will recieve
the actual setpoint (without the ECO setback value applied).
Example
Setpoint written/read from BMS
21 ˚C (69.8 °F)
Comfort/ECO state
1 (ECO)
Setpoint shown in thermostat
17 ˚C (62.6 °F)
Zones
The Base PRO controller can control a maximum of 6 actuator
channels, 12 if a slave module is installed. These channels are then
divided into zones which are linked to a thermostat.
A zone can consist of 1 to 12 channels, and not all channels must be
connected to an actuator and linked to a thermostat.
When writing to a channel, address the lowest channel number
(master channel) in the zone (if more chan one channel in the zone)
in order to change the value/state for the whole zone.
Comfort setting
The Base PRO can set a basic level of comfort for a zone when there
is no demand for heating. The value set is the percentage of time the
actuators are opened.
It will shorten the heat up time for the room, which is useful in rooms
where other heating sources, e.g. a fireplace, is present.
When the BMS reads the comfort setting it will recieve the actual
percentage.
Max/min limitations
If the BMS writes a setpoint to a zone, the Base PRO controller
applies maximum and minimum limitations before checking if there is
a demand for heating or cooling. The limited setpoint is also shown
on the thermostat.
The maximum and minumlimitations are also affected whether the
controller is set to Comfort or ECO state.
When the BMS reads the setpoint it will recieve the actual setpoint
(without limitation applied).
Example
Setpoint written/read from BMS
28 ˚C (82.4 °F)
Room setpoint max temperature
25 ˚C (77 °F)
Room setpoint min temperature
15 ˚C (59 °F)
Setpoint in room thermostat
25 ˚C (77 °F)
Comfort/ECO state
0 (Comfort)
Room temperature
20 ˚C (68 °F)
Heating demand
YES
Dynamic heat curve offset in integrated heat
pump
The Base PRO system can dynamically adjust the heat curve offset
in a BMS integrated heat pump. The BMS reads the value from the
controller and sends it to the heat pump.
The heat curve can be offset between -10 ˚C and +10 ˚C (-10 ˚F and
+10 ˚F).
When the BMS reads the heat curve offset from the controller it will
recieve a absolute degree value to offset the heat curve in the heat
pump.
Caution!
The heat pump must be connected to the BMS.
Do not use the heat pump integration connectors on the
Base PRO controller.
Note
This function requires
Heat pump integration via BMS
set to
on
on the microSD card to be activated.
