Heating control - user manual
www.solarcontrols.cz
Instructions for the installation and setup
of the device
Page 29 of 58
“Circulation pump request” – one of the controls requires the switching on of the circulation pump.
“Low heat power indicator” – it indicates probable insufficient heating power in the given heating
circuit. This indicator shows in the case of control according to a) when the thermostat continues to be
switched on for more than 30 minutes and in the case of control according to b) when the measured
room temperature is lower than the required temperature minus 1 °C again for more than 30 minutes.
“Heating indicator” – it informs the other control blocks about the current or recent request for
heating. This indicator is always activated by the switching on of the circulation pump and it is
deactivated after the time set by the “Heating indicator off-delay” item has passed.
“Heat source temperature” – it shows the temperature of the heat source, typically near the heat
offtake from the storage tank into the heating circuit in the case of control according to b).
“Room temperature” – it shows the room temperature in the case of control according to b).
“Requested room temperature” – in the case of control according to b), it shows the temperature set
by the time schedules. If no time schedule is active, it shows the default temperature of 20 °C.
“Thermostat request off-timer” – in the case of control according to a), it shows the time until the
expiration of the thermostat request delayed by the “Thermostat request off-delay” item.
“Requested power by thermal control” – in the case of control according to b), it shows the internally
set requested power of the circulation pump. As the circulation pump of the heating is usually not
PWM-controlled and it is connected either to a relay or triac output, slow PWM with the carrier
frequency of 0.002 Hz (it corresponds to the period of 500 s) will be used for power modulation. This
method of modulation is basically the same as in the case of a room thermostat with PI control.
“Heating indicator off-timer” – it shows the remaining time until the deactivation of the heating
indicator.
“Proportional band” – in the case of control according to b), it shows the proportional band of the
internal PI control. If the current measured room temperature is lower than the requested
temperature minus the proportional band, the circulation pump continues to run. If it is higher than
this limit, the internal PI control takes place. We recommend you choose the values 2 to 3 °C.
“Thermostat request off-delay” – in the case of control according to a), it shows the switching-off
delay of the circulation pump if it was switched on by a thermostat request.
“Heating indicator off-delay” – it shows the delay necessary for the deactivation of the heating
indicator.
“Time schedules” – it shows a dialog with the setting of time schedules – see the Chapter “
Chyba!
enalezen zdroj odkazů.
”.
1.
The temperature mode can be used for the time-limited setting of the requested room
temperature in the case of control according to b).
2.
The restricted mode concerns the circulation pump output.
3.
The enforced mode concerns the circulation pump output.
POOLS TAB
It includes control blocks for managing the pool heating and filtration pump.
Note:
This function is available only with the activated SW extension Pools.
