Operation manual of solar water controller SR530C8/SR530C8Q
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BYPA
By pass (high temperature)
HDN
Manual controlling
PASS
Password set
LOAD
Recovery to factory set
3.4 System description
Note:
T3 is alternative sensor, when no sensor (T3) is installed in the top part of tank,
controller will use the signal of sensor T2 automatically to control the auxiliary heating
or the circulation pump.
1 collector array – 1 storage tank – 1 pump and auxiliary heating
Description:
The solar circuit pump (R1) is switched on as soon as the switch-on temperature
difference (
△
Ton) 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 (
△
Toff), or the temperature
of storage tank (T3) reaches the preset maximum storage temperature, then the solar
circuit pump ( R1) is switched off.
Back-up heating by auxiliary boiler (detailed see paragraph 4.3):
Within the preset time section of back-up heating, if the temperature T3 is below the
switch-on temperature, then the circulation pump ( H1) of back-up heating is triggered,
when T3 is heated to the switch-off temperature, circulation pump H1 of back-up
heating is ceased.
