User
’
s Manual
SP226
2
2
Product information
2.1
System description
The solar collector pump (P1) is activated as soon as the 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 (T3) reaches the maximum
storage temperature, the solar pump (P1) will be switched off.
T3 is used to measure the temperature of the top part of storage tank. If the turning-on condition for auxiliary
heating is filled, the auxiliary heating will be activated.
1 collector array --- 1 storage tank
T1: Temperature sensor for collector array
T2: Temperature sensor in bottom part of storage tank
T3: Temperature sensor in top part of storage tank
P1: Solar collector pump
P2: Solar circulation pump
Danger:
If there is only one temperature sensor in water storage tank (usually in bottom part T2), it is
possible, that the auxiliary heating function will not be activated or deactivated at a right time, because
the water temperature in top part of the tank (T3) cannot be measured. In this case, if you still want to use
auxiliary heating function, control program will automatically take the signal from bottom temperature sensor (T2)
instead of T3. However, water in top part of tank might often be overheated. It may cause damages to material and
persons. So it is highly recommended not to use auxiliary heating in such a case.
Note:
To lock this function, please press
“
Choose Function
”
button until the signal
“
”
appears on the
screen (see details in 3.5 Forbid/Permit using auxiliary heating).
Содержание SP226
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