SR981S/SR982S operation manual of solar pump station
Page 26 of 85
System 7: East/West collector array + 1 tank controlled by pump logic
Description:
Controller compares the temperature of east/west collector array T0, T1 and tank
temperature T2, when temperature difference reaches its switch-on value ( DT1O), then
P1 ,P2 is triggered , they keeps running until tank temperature reaches its maximum value
or when temperature difference drops to its switch-off value, then P1, P2 is ceased.
Input ports
Description
Output ports
Description
T0
Sensor of west collector array
P1
Pump 1 for collector array
circuit
T1
Sensor of east collector array
P2
Pump 2 for collector array
circuit
T2
Sensor on the bottom part of tank
T3
Sensor on the top part of tank
H1
Back-up heat resource
T6
DHW sensor
R3
Pump for DHW circuit
T7
Sensor on the return pipe
T8
Sensor on the flow pipe( SR981S no)
List of available auxiliary functions in this system (functions are selectable)
Input ports
Description
Output ports
Description
T4
Sensor of thermostat function
R1
Selectable:
(COOL) tank cooling
(AHO) thermostat
T5
Sensor on solid fuel boiler
R2
Pump for solid fuel boiler
Above mentioned auxiliary functions should be activated in menu in advance.