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4.3 SAFETY NORMS
Boiler installation and any other assistance and maintenance
must be done by Qualified Personnel according to current codes
of practice and legislation in Countries where the product is
sold.
Make sure the following operations have been carried
out before any jobs to be done:
- disconnect the boiler from the electricity supply;
- turn off the gas tap;
- if necessary turn off the sanitary water inlet and taps
for heating. See paragraph FILLING AND
EMPTYING SYSTEMS in the section 7.4 page 72.
4.4
ACCESSIBILITY TO THE COMPONENTS
This chapter gives detailed explanations of how to gain access
and dismantle the main components of the boiler.
The data sheet on the component of interest can be consulted
quickly with the help of the index given here below.
INDEX:
• Burner page 19
• Circulator page 20
• Ignition and control electrode pages 22-23
• Flowmeter page 24
• Case page 25
• Water pressure switch page 26
• Safety pressure switch (C.S.I. only) page 27
• Bithermal exchanger pages 28-30
• Electronic control panel page 32
• NTC heating temperature control probe page 33
• NTC sanitary temperature control probe page 34
• Fumes thermostat (C.A.I. only) page 35
• Limit thermostat page 36
• Nozzles pages 37-38
• By-pass valve page 39
• Gas valve pages 40-41
• Safety valve page 42
• Expansion tank page 43
• Fan (C.S.I. only) page 44
• Venturi and Pitot tube (C.S.I. only) pag. 44
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