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5. TESTING THE HEATING UNIT
5.1. Preliminary checks
Before testing the heating unit (or perform a first ignition), carry out
the following checks:
- verify the heating unit was installed in compliance with legal
requirements;
- make sure the flue gas discharge pipe is installed correctly.
When the heating unit is operating, there is not to be any leakage
of combustion products from the seals;
- check that the supply voltage is 230 V - 50 Hz;
- make sure the system is filled (water pressure gauge reading is
to be 1-1,3 bar);
- verify any cut-off valves in the system are open;
- check for oil leaks;
- master switch is to be set to ON;
- check the safety valve not to be jammed;
- check for water leaks.
If the heating unit is not installed in compliance with the rele-
vant laws and standards, do not switch it on and inform the
system supervisor.
5.2. Switching on and off
For instructions on how to switch the heating unit on and off, refer
to the “Instructions for the user” section in this manual.
6. MAINTENANCE
In order to ensure correct and efficient heating unit operation, have it serviced according to the following schedule and complying to the
legal requirements.
Appropriate maintenance ensures correct, environmentally friendly, and safe operation of the heating unit for people, animals and property.
All maintenance (and repair) procedures must be carried out by qualified service technicians.
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accurately trained personnel.
6.1. Maintenance schedule
Routine maintenance is to include the following:
- general check and inspection of the heating unit;
- check for leaks of the oil supply system;
- check that the heating unit switches on correctly;
- check combustion parameters through flue gas analysis;
- check condition, state and tightness of flue gas discharge pipes;
- check all safety devices of the heating unit to be working;
- check the fittings for water leaks and oxidation;
- check efficiency of the safety valve;
- check the safety thermostat;
- check the safety valve;
- check pressure of the expansion vessel;
- check efficiency of the water pressure switch.
and the following cleaning operations:
- internal cleaning of the heating unit;
- clean the burner and adjustment as necessary (see “combustion adjustment” section);
- clean the ventilation grille of the boiler room;
- clean the flue gas side of the heat exchanger.
When servicing the unit for the first time, perform the following checks:
- verify the suitability of the room of installation;
- burner cleaning and adjustment when necessary (see “combustion adjustment);
- cleaning of the ventilation openings of the boiler room;
- cleaning of the flue gas side of the heat exchanger.
When first service is performed on the heating unit , also check the following:
- boiler room suitability
- vent openings
- flue gas discharge ducts, diameters and length
- installation of the heating unit in accordance to the instructions in this manual.
If the hea�
the system supervisor both verbally and by filling out a written declaration.
