NINFA N 24 MCA
44
EN
cod. 3540P001 - 10/2008 (Rev. 00)
3.2 Start-up
B
Checks to be made at first lighting, and after all maintenance operations that involved disconnection from the
systems or an operation on safety devices or parts of the boiler:
Before lighting the boiler
•
Open any on-off valves between the boiler and the systems.
•
Check the tightness of the gas system, proceeding with caution and using a soap and water solution to detect any
leaks in connections.
•
Check correct prefilling of the expansion tank (ref. sec. 4.4).
•
Fill the water system and make sure 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.
•
Fill the condensate trap and check correct connection of the condensate elimination system.
•
Make sure there are no water leaks in the system, DHW circuits, connections or boiler.
•
Check correct connection of the electrical system and efficiency of the earthing system
•
Make sure the gas pressure value for heating is that required.
•
Make sure there are no flammable liquids or materials in the immediate vicinity of the boiler
Checks during operation
•
Turn the unit on as described in sec. 1.3.
•
Make sure the fuel circuit and water systems are tight.
•
Check the efficiency of the flue and air-fume ducts while the boiler is working.
•
Check the correct tightness and functionality of the condensate elimination system and trap.
•
Make sure the water is circulating properly between the boiler and the systems.
•
Make sure the gas valve modulates correctly in the heating and domestic hot water production phases.
•
Check proper boiler lighting by doing several tests, turning it on and off with the room thermostat or remote control.
•
Using a combustion analyser connected to the boiler fume outlet, check that the CO
2
content in the fumes, with the
boiler operating at max. and min. output, corresponds to that given in the technical data table for the corresponding
type of gas.
•
Make sure the fuel consumption indicated on the meter matches that given in the technical data table on sec. 4.4.
•
Check the correct programming of the parameters and carry out any necessary customization (compensation curve,
power, temperatures, etc.).
3.3 Maintenance
Periodical check
To ensure proper operation of the unit over time, have qualified personnel carry out a yearly check, providing for the
following:
•
The control and safety devices (gas valve, flowmeter, thermostats, etc.) must function correctly.
•
The fume exhaust circuit must be perfectly efficient.
(Sealed chamber boiler: fan, pressure switch, etc. - The sealed chamber must be tight: seals, cable glands, etc.)
(Open chamber boiler: anti-backflow device, fume thermostat, etc.)
•
The air/fume terminal and ducts must be free of obstructions and leaks
•
The burner and exchanger must be clean and free of deposits. For 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 tight.
•
The water pressure in the cold water system must be approx. 1 bar; otherwise bring it to that value.
•
The circulating pump must not be blocked.
•
The expansion tank must be filled.
•
The gas flowrate and pressure must match that given in the respective tables.
A
The boiler casing, control panel and aesthetic parts can be cleaned with a soft damp cloth, if necessary
soaked in soapy water. Do not use any abrasive detergents and solvents.
Summary of Contents for NINFA N 24 MCA
Page 84: ...NINFA N 24 MCA 84 RU cod 3540P001 10 2008 Rev 00 1 3 5 120 FH 5 FH 6 1 5 6 1 6 5 7 B sez 2 3...
Page 88: ...NINFA N 24 MCA 88 RU cod 3540P001 10 2008 Rev 00 1 0 F37 15 15 1 16 1 0 16 A 120 FH 1 16...
Page 91: ...NINFA N 24 MCA 91 RU cod 3540P001 10 2008 Rev 00 B 230 25 18 2 6 0 5...
Page 96: ...NINFA N 24 MCA 96 RU cod 3540P001 10 2008 Rev 00 3 2 B sez 4 4 sez 1 3 CO 2 sez 4 4 3 3 1 A...
Page 97: ...NINFA N 24 MCA 97 RU cod 3540P001 10 2008 Rev 00 21 1 1 2 2 3 3 21 1 2 3 TEST 4 10 5 1 1 2 3...
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