9
4.11
Double heater system with the use of a three-way valve, controlling operation of the circulation pump - scheme no 11
Controlling collector pump and U three-way valve
Similarly as in scheme no 9 - description in point 4.9. The A heater plays the role of A pool in the described scheme.
Controlling the C circulation pump
Similarly as in scheme no 2 - description in point 4.2.
Fig. 13. Schematic and electrical diagram of installation no 11
4.12
Double heater system with the use of an additional pump, controlling operation of the circulation pump - scheme no 12
Controlling P and K collector pumps
Similarly as in scheme no 9 as described in point 4.9. The A heater plays the role of A pool in the described scheme.
Controlling the C circulation pump
Similarly as in scheme no 2 - description in point 4.2.
Fig. 14. Schematic and electrical diagram of installation no 12
4.13
The system with a buffer tank used for cooperation with a central heating installation - scheme no 13
Controlling the P collector pump
Similarly as in scheme no 1 - description in point 4.1.
Controlling the C boiler pump
The C boiler pump is only switched on during the hours programmed by the user in the “
Time program C
” option in the “
Parameters settings
” menu.
Controlling the U three-way valve
Once the T2 temperature in the A buffer exceeds the T4 temperature for the fluid return from the central heating system by a value higher than “
Temperature difference ON add.
pump, valve”
, the three-way valve directs the fluid returning from the central heating installation to the A buffer. Else, the fluid return is always directed to the B boiler return.
