Gabarron MATTIRA MAS18 Instrucciones De Instalacion Y Uso página 32

5.4 HEATING SYSTEM INITIAL FILLING
Ensure both flow and return isolation valves are open. Identify the boiler automatic air release valve at the top right hand
side of boiler and loosen the cap. Close any manual air vents fitted on the system.
Be careful not to splash any of the electrical components.
Fill slowly until the pressure gauge indicates between 1 and 1.5 bar.
Proceed to vent all the manual release valves until all air is purged from the system. It will be necessary to top-up through
the filling during this operation, filling the installation until the pressure gauge indicates between 1 and 1.5 bar.
5.5 PUMP CHECKING & VENTING
Sometimes (i.e. if display fault E3) it is necessary to check that the pump is properly vented and spinning freely.
To purge the pump, turn on the boiler and with the pump selector, alternate between positions III and Min every fifteen
seconds. Keep this operation for 5 minutes.
If excess air remains in the system or there is insufficient pressure or flow rate the boiler will fail to operate and display fault
E3.
A LED indicator informs about the operating status of the pump:
Green: correct operation.
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Green / red flashing: Lower voltage U<180V; overvoltage U>253V; Module overheating
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Red flashing: pump blocked.
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5.6 MORE INSTALLATION DATA
It is possible to display more installation data by pressing
Heating return temperature.
Maximum output limitation in kW.
Modulated output in kW.
Outdoors temperature. (Only if the sensor is connected and P005 is activated).
for a few seconds and then
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or .