SR981S/SR982S operation manual of solar pump station
Page 31 of 85
List of available auxiliary functions in this system (functions are selectable)
Input ports
Description
Output ports
Description
T5
Sensor on solid fuel boiler
R2
Pump for solid fuel boiler (See
Paragraph)
Above mentioned auxiliary functions should be activated in menu in advance.
System 12: Standard solar system with heat exchanger
Description:
Controller compares the temperature between T1 of collector array and T2 of tank, when
temperature difference reaches its switch-on value (DT1O), then corresponding pump P1
is triggered, tank is heated until tank temperature reaches its maximum value or when
temperature difference (DT1F) drops to the switch-off value, then P1 is ceased.
Another temperature difference between T4 and T2
( DT1O/DT1F)
to control pump P2 to
heat tank.
Note:
when T4 is not installed, then temperature difference between T1 of collector and T2
of tank reaches the switch-on value, P1 and P2 are switched-on at the same time, tank is
heated until tank temperature reaches its maximum value or when temperature difference
(DT1F) drops to the switch-off value, then P1and P2 are ceased also at the same time.
See detailed in 8.4.8/8.4.9
