Baxi NUVOLA 28 Fi Installers And Users Instructions page 28

High efficiency, fast-heating gas boilers with balanced flue for wall-mounting
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*
remove the modulator terminal cover;
*
adjust the brass nut (see Picture M) to obtain the jet pressure shown
in the table on page 28;
*
check that boiler connecting pressure (15) is correct (30 mbar for
LPG, or 20 mbar for natural gas).
Table of burner pressures - heat output / Tabel for dysetryk - varme-output
mbar
mbar
G . 20
G . 30 / G . 31
Naturgas
Flaskegas
1.7
2.1
2.5
2.8
3.1
3.6
4.1
10.5
4.7
12.0
5.3
13.5
6.0
15.2
6.6
16.9
7.4
18.8
8.1
20.7
8.9
22.7
9.7
24.8
10.6
27.5
1 mbar = 10.197 mmH
0
2
Consumption table - burner jets / Forbrugstabel - brænderdyser
Gas consumption/Gasforbrug (15°C - 1,013mbar)
G.20 (Natural gas/Naturgas) 34.02 MJ/m
G.30/G.31 (Flaskegas) 45.6 MJ/Kg a 30 mbar
Picture G
Billede G
Unscrew the nut securing the
gas pipework to the burners
rack
Løsn den møtrik, der
fastholder gasrørene til
brænderens stativ
kW
kcal/h
4.1
10.4
8.900
4.7
11.6
10.000
5.7
12.8
11.000
6.8
14.0
12.000
7.9
15.1
13.000
9.2
16.3
14.000
17.4
15.000
18.6
16.000
19.8
17.000
20.9
18.000
22.1
19.000
23.3
20.000
24.4
21.000
25.6
22.000
26.7
23.000
28.0
24.000
3
*
Fjern modulatorspolens dœksel.
*
Justér messing møtriken (se billede M) for at nå op på de dysetryk, som
vises i tabellen på side 28.
*
Kontrollér, at kedlens tilslutningstryk (15), er korrekt (30 mbar for
flaskegas eller 20 mbar for naturgas).
Minimum output/Minimum ydelse
Variable partial load output for radiator
circuit (set on P3 MAX RISC, page 26)
Variabel dellastydelse for radiatorkreds
(indstilles på P3 MAX RISC, side 26)
Maximum output/Maximal ydelse
Max. output
Min. output
Maks. ydelse
Min. ydelse
3.29 m
3
/h
2.45 kg/h
Tandem 837.011 mod. Sit valve
28
921.968.2.00.02.010702
Picture H
Billede H
Carefully pull out the burners
rack
Træk forsigtigt brænderen ud
18 injectors DIAMETER
18 dyser DIAMETER
1.26 m
3
/h
1.18mm
0.94 kg/h
0.69mm
14
15
Fig. 9

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