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Wijzigingen op grond van technische verbeteringen voorbehouden!
Installatie- en gebruikersinstructie Nefit ventilatorgeiser F2555/3255/4055 • Uitgave 07/2008
Technische gegevens en afmetingen2
Nefit B.V.
2.9 Technische gegevens
Technische gegevens Symbool Eenheid F2555-N F3255-N F4055-N
Output en verwarmingsbehoefte
Nom. max. warmteafvoer Pn kW 17,4 22,9 30,3
Nom. min. warmteafvoer Pmin kW 6,2 7,5 8,0
Afvoer (modulatiereeks) kW 6,2 - 17,4 7,5 - 22,9 8,0 - 30,3
Nom. max. warmteaanvoer Qn kW 20,0 26,3 33,9
Nom. min. warmteaanvoer Qmin kW 7,1 8,6 9,0
Gasspecificaties*
Aanvoerdruk
Normaal gas G25 mbar 25 25 25
Propaan gas G31 mbar 30 30 30
Verbruik
Normaal gas G25
m
3
/h
2,3 2,9 3,7
Propaan gas G31 kg/h 1,6 2,0 2,6
Aantal injectoren 12 14 18
Specificaties van het watersysteem
Max. waterdruk** pw bar 12 12 12
Temperatuurregeling bij maximuminstelling
Temperatuurstijging °C 50 50 50
Doorstroomsnelheid l/min 2 - 5,0 2 - 6,5 2 - 8,5
Min. bedrijfsdruk pwmin bar 0,1 0,1 0,2
Temperatuurregeling bij minimuminstelling
Temperatuurstijging °C 25 25 25
Doorstroomsnelheid l/min 4 - 10 4 - 13 4 - 17
Specificaties rookgas***
Eisen m.b.t. de trek mbar 15 15 15
Doorstroomsnelheid g/s 13 17 22
Temperatuur °C 160 170 180
Tabel 4
* Hi 15°C - 1.013 mbar - droog: normaal gas 34,2 MJ/m
3
(9,5 kWh/m
3
)
* Propaan 46,44 MJ/kg (12,9 kWh/kg)
** In verband met de uitzetting van water mag deze waarde niet worden overschreden.
*** Bij een maximale warmteafvoer
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