Ferroli MODENA S HE Instructions For Use, Installation And Maintenance page 23

MODENA S HE
Periodical check
To keep the unit working properly over time, it is necessary to have qualified personnel make an annual check that in-
cludes the following tests:
• The control and safety devices (gas valve, flow meter, thermostats, etc.) must function correctly.
• The fume extraction circuit must be fully efficient.
• The airtight chamber must be sealed
air-flue terminal
• The
• The condensate evacuation system must be efficient with no leakage or obstructions.
• The burner and exchanger must be clean and free of scale. When cleaning, do not use chemical products or wire
brushes.
• The electrode must be free of scale and properly positioned.
• The gas and water systems must be airtight.
• The water pressure in the cold water system must be about 1 bar; otherwise, bring it to that value.
• The circulation pump must not be blocked.
• The expansion tank must be filled.
• The gas flow and pressure must correspond to that given in the respective tables.
The boiler casing, panel and aesthetic parts can be cleaned with a soft damp cloth, possibly soaked in soapy
A
water. Do not use any abrasive detergents and solvents.
Opening the casing
To open the boiler casing, you need to follow the sequence given below and the instructions of fig. 29.
1. Using a screwdriver, partially unscrew the 2 screws "A" (fig. 28)
2. Lift the panel "B"
B
Before carrying out any operation inside the boiler, disconnect the electrical power supply and close the gas
cock upstream
fig. 28
B
When remounting the panel "B" check carefully it is correctly mounted.
EN
and ducts must be free of obstructions and leaks
cod. 3541C364 - Rev. 00 - 12/2012
fig. 29 - Opening the casing
23