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Operation manual of solar water controller SR868C8/SR868C8Q
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3.4 System description
1 collector array
– 1 storage tank – 1 pump and auxiliary heating
Description:
The solar circuit pump (P1) 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
(P1)
is switched off.
Back-up heating by auxiliary boiler (detailed see paragraph 4.4):
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.
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.
T0: Temperature sensor for thermal energy measuring ( optional sensor)
T1: Temperature sensor for collector array (PT1000)
T2: Temperature sensor in the bottom part of tank 1(NTC10K)
Содержание SR868C8
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Страница 44: ...Operation manual of solar water controller SR868C8 SR868C8Q 43 SR802 CONNECTION DIAGRAM ...