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© Baxi Heating UK 2012
Indication
Meaning
+
Fluid flow is above 90°C (indication) / Missing circulation in solar circuit
!
11.18
Flow monitoring
1. If during normal operation the flow temperature rises above
90°C a warning indication will be shown.
2. If the energy productivity measurement option is
deactivated, the temperature difference between collector and
storage tank is checked. If the temperature differential exceeds
60K + dTmax an error message will occur, as under normal
system operation where the pump is running, large
temperature differences would not normally be seen.
3. If the energy productivity measurement option is activated,
the flow rate is checked, if no flow is detected for 15 minutes
an error message will be seen (Applicable if Flow Meter
fitted).
NOTE:
these error conditions will automatically reset after a
short period of operation once normal flow/temperature
conditions are restored.
11.19
System protection function
1. The system protection function switches the system off if the
“maximum collector temperature” is exceeded by 10K. As
soon as the temperature drops below the “maximum collector
temperature”, the system restarts. This function has priority
and is always active, regardless of whether the collector
protection is on or off.
11.20
Frost protection
1. This function can be switched on or off by using item 11 in
the “Basic adjustments” menu. The start temperature can be
adjusted with item 13. Furthermore, a frost protection sensor
can be selected (T1-T6, point 12).
2. If the measured value is lower than the start temperature,
the solar pump is activated until the adjusted frost protection
start tempe5K is reached. The minimum runtime of
the pump is 5 minutes.
3. For safety reasons the function is deactivated if the
temperature of the priority storage falls below 5ºC.
11.0
Commissioning of solar controller