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8– MAINTENANCE
Correct and regular use and maintenance of the unit heater allows an efficient operation, a minimum
consumption, as well as a long life.
The maintenance must be done with the device cold, with the gas and electricity supplies cut off.
These interventions must be realised by a qualified person.
Components
Maintenance operations
Gas heater
Check the correct functioning of all the safety devices and verify
that all the screws are correctly tightened.
Main heat exchanger
From the outside, remove the blower grid and check the condition
of the exchanger.
Access to the exchanger by removing the burner, the NOx
catalyser, the smoke box and the smoke baffles, and clean it.
Check the condition of the smoke baffles every two years,
replace if necessary.
Catalyser NOx (A)
Check their condition regularly and
replace them every two years.
If their condition requires it, change
them more often.
Burner jet
Disassemble the burner ramp, check their condition and clean
them.
Nozzles
Clean the gas injectors
Exhaust fan and venturi
Clean the extractor & the venturi, and check its condition and its
rotation.
Ionization sensor and ignition electrode
Check their condition, change them if necessary.
Fan
Clean with compressed air
Flue pipe
Check the sealing. Sweep it out
Body, supply grille, louvers
Clean with a duster
Gas filter
Disassemble the dirty cartridge and clean it with compressed air
Combustion
Make sure to realize an annual combustion check
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