System Start-Up - Ferroli OPTIMAX 25 S Instructions For Use, Installation And Maintenance

3.2 System start-up

Commissioning must be performed by Qualifi ed Personnel.
Checks to be made at fi rst ignition, and after all maintenance operations that involved discon-
necting from the systems or an intervention on safety devices or parts of the boiler:
Before lighting the boiler:
• Open any isolation valves between the boiler and the systems.
• Check the tightness of the gas system, proceeding with caution and use gas leak detection fl uid to
detect any leaks in connections.
• Fill the water system and make sure that all air contained in the boiler and the system has been vented
by opening the air vent valve on the boiler and any vent valves on the system.
• Make sure there are no water leaks in the system, hot water circuits, connections or boiler.
• Make sure the electrical system is properly connected.
• Make sure that the unit is connected to a good earthing system.
• Make sure there are no fl ammable liquids or materials in the immediate vicinity of the boiler.
• Vent and spin the pump.
• Ensure the fl ue system is correctly fi tted, including terminal locations.
Ignition
• Open the gas valve upstream of the boiler.
• Purge the gas supply and appliance
• Switch on the boiler fused spur.
• The boiler is now ready to function automatically whenever the external controls call for heating.
In case of an electrical power failure while the boiler is working, the burner will go out. When
power returns, the boiler will run the self-test cycle again, after which the burner will automatically
re-ignite (if there is still demand for heat).
Checks during operation
• Check the tightness of the gas circuit and water systems.
• Check the effi ciency of the fl ue and air-fl ue ducts while the boiler is working.
• Check that the water is circulating properly between the boiler and the system.
• Make sure that the gas valve modulates correctly.
• Check the proper ignition of the boiler by performing various tests, turning it on and off with the
room thermostat or remote control.
• Make sure that the fuel consumption indicated on the meter corresponds to that given in the technical
data table in chap. 4.
• Check the parameters are programmed correctly and perform any required customization (power,
temperatures, etc.).
Turning off
Press the key for 5 seconds (see fi g. 1).
When the boiler is turned off with this key, the printed circuit board is still powered, heating operation
is disabled and the display appears
Close the gas cock ahead of the boiler and disconnect electrical power.
To avoid damage caused by freezing during long shutdowns in winter, it is advisable to drain all
water from the boiler, or add a suitable antifreeze to the heating system.
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but the frost protection, will remain active.
Optimax 25 S