Routine Servicing, Maintenance & Repair - Ferroli MODENA S HE Instructions For Use, Installation And Maintenance

Check the operational (working) gas inlet pressure
Set up the boiler to operate at maximum rate as de-
scribed in section " Test mode" pag. 21 of section 3.3.
With the boiler operating in the maximum rate condi-
tion check that the operational (working) gas pressure
at the inlet gas pressure test point (see fig. 27) com-
plies with the requirements of section 4.4.
Ensure that this inlet pressure can be obtained with all
other gas appliances in the property working.
Measure the gas rate
Measure the gas rate and check against following table:
3.4 Routine servicing, maintenance & repair
General
PLEASE NOTE: During routine servicing, and after any maintenance or change of part of the combustion circuit, we
recommend that the following is checked:
• The integrity of the flue system and the flue seals;
• The integrity of the boiler combustion circuit and the relevant seals;
• The operational (working) gas inlet pressure at maximum rate, as described in section 4.4;
• The gas rate, as described in section 4.4;
• The combustion performance, as described in section 3.4 Combustion check.
Competence to carry out the check of combustion performance
PLEASE NOTE: BS 6798: 2009 Specification for installation and maintenance of gas-fired boilers of rated input
not exceeding 70 kW net advises that:
• The person carrying out a combustion measurement should have been assessed as competent in the use of a flue
gas analyser and the interpretation of the results;
• The flue gas analyser used should be one meeting the requirements of BS7927 or BS-EN50379-3 and be calibrated
in accordance with the analyser manufacturers' requirements, and
• Competence can be demonstrated by satisfactory completion of the CPA1 ACS assessment, which covers the use
of electronic portable combustion gas analysers in accordance with BS 7967, Parts 1 to 4.
22
BOILER MODEL
MODENA 18 S HE
MODENA 25 S HE
MODENA 32 S HE
cod. 3541C364 - Rev. 00 - 12/2012
MODENA S HE
fig. 27
GAS RATES (NATURAL GAS)
AFTER 10 MINUTES FROM COLD
Maximum rate
3 3
m /h ft /h
1.84 64.98
2.64 93.23
3.38 119.36
Minimum rate
3 3
m /h ft /h
0.42 14.83
0.61 21.54
0.71 25.07
EN