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3.16 Starting up the boiler
3.16.1 Preliminary checks
Before starting the boiler, check that:
• the flue gas venting duct and the relevant terminal are installed in conformity with the instructions: with the boiler operating, there must
be no leakage of combustion by-products from any of the gaskets;
• the supply power to the boiler must be 230 V ~ 50 Hz;
• the system is correctly filled with water (pressure gauge reading 1 to 1.3 bar);
• any shut-off cocks in the system pipes are open;
• the mains gas type is correct for the boiler calibration: convert the boiler to the available gas if necessary (see Adaptation to other gas types
and burner adjustment on page 42). This operation is to be exclusively carried out by qualified personnel.
• The gas supply cock is open.
• There are no fuel gas leaks.
• The main switch installed ahead of the boiler is turned on;
• The 3-bar safety valve is not stuck.
• There are no water leaks.
• The pump has not seized.
3.16.2 Switching on and switching off
To switch the boiler on and off, refer to the Instructions for the User (see Instructions for the user on page 8).
3.17 Available head
Fig. 15 Available head
Q . . . . . . . . . . . . . . . . . Flow rate (l/h)
H . . . . . . . . . . . . . . . . . Available head (mbar)
600
500
400
H
300
200
100
0
0
200
400
Instructions for the installer
600
800
1000
1200
Q
1400
39
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