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0RNO0107-B_FL-BE Gebruik en onderhoud VARFREE pag. 5/18
1. Algemene kenmerken
Deze VARFREE ketel is standaard ingesteld om te
werken op aardgas uit groep H (type G20) met een
ingangsdruk van 20 mbar.
Zie hoofdstuk 6.2 indien u een ander type gas heeft,
en doe een beroep op gekwalificeerd personeel.
In geval van installatie op een gasnet van 300 mbar,
monteer een gasfilter en een gasdrukregelaar op de
ketel volgens de geldende voorschriften.
Indien u handelingen uitvoert aan een
verzegeld component vervalt de garantie.
(Behalve bij verandering van gastype
uitgevoerd door gekwalificeerd personeel).
2.1. Categorie gas
Land BE
VARFREE 40 / 60 I
2E(S) B
VARFREE 80 / 100 I
2E(R) B
2.2. Nominale, maximale en minimale ingangsdrukken gas
Aardgas H
G20
Aardgas L
G25
Nominale druk (mbar)
20 25
Minimale druk (mbar)
17 20
Maximale druk (mbar)
25 30
2.3. Verbrandingskarakteristieken op 15°C en 1013 m bar
VARFREE
40 60 80 100
Nominaal vermogen Pn (80/60°C)
G20/G25
kW
40,0 / 33,0 56,5 / 46,6 80,0 / 66,0
92,6 / 76,4
Nominaal vermogen bij condensatie P (50/30°C)
G20/G25
kW
44,0 / 36,3 61,8 / 51,0 87,0 / 72,0 100 / 82,5
Nominale warmtebelasting Qn
G20/G25
kW
41,6 / 34,3 58 / 47,9 83,0 / 68,5 95,1 / 78,5
Minimale warmtebelasting Qmin
G20/G25
kW
12,6 / 10,4 14,5 / 12,0 25,5 / 21,0 25,5 / 21,0
Gasdebiet G20 bij Pn
m
3
/u 4,4 6,1 8,8 10,1
Gasdebiet G25 bij Pn
m
3
/u 5,1 6,1 8,8 10,1
Rookgasdebiet bij Qn
(G20)
g/s 19 27 39 44
Rookgastemperatuur bij Qn
°C 67 70 68 76
Drukverlies in het rookgascircuit bij Qn
Pa 47 75 50 74
Maximaal toegelaten druk op de pijp (B23P)
Pa 85 150 80 110
Debiet verbrandingslucht bij Qn
m
3
/u 54 76 109 124
NOx-klasse type B / C
4 / 5 4 / 5 5 / 5 5 / 5
Classificatie in functie van de rookgasafvoer en de
luchttoevoer
B23, B23P, C13, C33, C53
5


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