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System 1
1 collector array - 1 storage tank - 1 pump
Description:
The solar circuit pump (P1) is switched on as soon as the switch-on temperature difference between the collector array (T1) and the storage tank (T2) is reached. If the temperature difference between the collector array (T1) and storage tank (T2) drops below the switch-off temperature difference, or the storage tank (T2) reaches the maximum storage temperature, then the solar circuit pump is switched off.
T1: Temperature sensor for collector 1
T2: Temperature sensor in the bottom part of tank 1.
T3: Temperature sensor in the top part of tank ( for control auxiliary heating)
T4: Temperature sensor on hot water pipe
P1: Solar circuit pump 1
P2: Hot water circuit pump
Note:
• H1 is connected with auxiliary heating, suitable for system 1 - 8.
• T3, T4, P2 are suitable for system 1-8
• T3 is alternative, when no sensor (T3) is installed in the top part of sensor, controller will use the signal of sensor T2 automatically to control the auxiliary heating.

System 2
1 collector array - 2 storage tanks - 2 pump
Description:
If the switch - on temperature difference between the collector array (T1) and one of the two storage tanks (T2,or T5) is exceeded, then the appropriate solar circuit pump (P1) or (P0) is switched on. According to the priority switching, both storage tanks ( T2, T5) are loaded one after the other, until either the relevant switch-off temperature difference between the collector array ( T1) and storage tank (T2, T5) falls below the threshold, or the maximum storage temperature is reached.
T1: Temperature sensor for collector 1
T2: Temperature sensor in the bottom part of tank 1
T5: Temperature sensor in the tank 2
T4: Temperature sensor on hot water pipe
P1: Solar circuit pump 1
P0: Solar circuit pump 2
Note: the default priority tank is tank 1.

System 6
Valve-controlled 2 collector arrays ( east/west roof) - 2 storage tanks - 1 pump - 2 valves
Description
If the switch-on temperature difference between one of the two tanks ( T2, T5) and collector array1 ( T1) or collector array 2 ( T0) is exceeded, then the solar circuit pump ( P1) is switched on, switching valve (R1) switches the relevant tank into the solar circuit, and switching valve (R2) switches the affected collector array (T1 or T2) into the solar circuit also. Switching valve 1 (R1) is always set so that flow occurs through the warmer of the two collector arrays (T1, T0). Switching valve 2 (R2) controls the loading of the storage tanks (T2, T5) according to the priority switching.
Pump ( P1) switches off when the switch-off temperature difference between either or both collector arrays and its corresponding storage tank1 ( T2) and storage tank 2( T5) falls below the threshold or the maximum storage temperature ( T2 or T5) is reached.
T1: Temperature sensor for collector 1
T0: Temperature sensor for collector 2
T2: Temperature sensor in the bottom part of tank 1
T5: Temperature sensor in the bottom part of tank 2
P1: Solar circuit pump 1
R1: 3-way switching valve 1 ( Ports 17,18 are shut off, Ports 17,19 are turned on )
R2: 3-way switching valve 2 ( Ports 20,21 are shut off, Ports 20,22 are turned on )
Note:
• When no voltage is on the system, the switching valve 2 ( R2) must be set to tank 1 ( T2), the switching valve 1 (R1) must be set to collector array 1( T1)
• Default priority tank is tank 1( T1)

System 8
pump controlled 2 collector arrays( east/west roof) - 2 storage tanks - 2 pumps - 1 valve
Description:
If the switch-on temperature difference between one of the two tanks (T2, T5) and collector array1 (T1) and collector array 2 (T0) is exceeded, then the switching valve (R2) switches the relevant storage tank (T2, or T5) into the solar circuit. If the switch-on temperature difference between the storage tanks (T2, T5) and one of the collector arrays (T1, T0) is reached, then either solar circuit pump P1 for collector array1 ( T1) , or solar circuit pump P0 for collector array( T0) is switched on, depending on where the temperature difference occurs. If the switch-on temperature difference is reached for both collector arrays (T1, T0), then both pumps (P1, P0) are switched on. The switching valve (R2) controls the loading of the storage tank (T2, t5) according to the priority switching. The pumps ( P1, P0) switch off independently of each other, when either the relevant switch-off temperature for one or both of the collector arrays ( T1, T0) with regard to the storage tanks ( T3 or T4) falls below the threshold, or the maximum storage temperature is reached.
T1: Temperature sensor for collector 1
T0: Temperature sensor for collector 2
T2: Temperature sensor in the bottom part of tank 1
T5: Temperature sensor in the bottom part of tank 2
P1: Solar circuit pump 1
P0: Solar circuit pimp 2
R2: 3-way switching valve 1 ( Ports 20,21 are shut off, Ports 20,22 are turned on )
Note:
• When no voltage is on the system, the switching valve ( R2) must be set to collector array 1( T1)
Default priority tank is tank 1( T1)