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Montage- en bedieningsrichtlijnen
Gascondensatieketel WTC-GB 470-A en WTC-GB 620-A
3 Productbeschrijving
83322107 1/2022-04 La 28-204
3.4.7 Hydraulische gegevens
WTC 470 WTC 620
Waterinhoud 56 liter 68 liter
Keteltemperatuur max 85 °C max 85 °C
Werkingsdruk max 6 bar max 6 bar
Debietgrens max 32 m³/h max 45 m³/h
Drukverlies
Om de hydraulische dimensionering van de verwarmingsinstallatie te bepalen,
drukverlies van het toestel en de maximale debietgrens in acht nemen.
450
400
350
300
250
200
150
100
50
0
28
30
32
34
42
44
46
48
40
38
36
0
2
4
8
6
10
16
14
20
12
18
24
22
26
WTC 470
WTC 620
1Debiet [m³/h]
2Drukverlies [mbar]
3.4.8 Berekening van de rookgasinstallatie
WTC 470 WTC 620
Restopvoerdruk aan het
rookgasmeetpunt
20 … 150 Pa 80 … 160 Pa
Rookgasdebiet 25 … 201 g/s 26 … 266 g/s
Rookgastemperatuur bij 80/60 °C 56 … 68°C 57 … 68°C
Rookgastemperatuur bij 50/30 °C 28 … 47°C 29 … 46°C
3.4.9 EnEV-productkenwaarden
WTC 470 WTC 620
Ketelrendement bij 100 % vermogen
en bij gemiddelde keteltemperatuur
70°C
97,8 % Hi
(88,1 % Hs)
97,9 % Hi
(88,2 % Hs)
Ketelrendement bij 30% vermogen en
teruglooptemperatuur 30°C
107,6 % Hi
(97,8 % Hs)
108,4 % Hi
(97,6 % Hs)
Stilstandsverlies bij 30K boven
ruimtetemperatuur
0,03 %; 388 W 0,03 %; 388 W
28


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