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Remeha Gas 450 L
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5.2.5 Geluidsproductie
Het geluiddrukniveau in het ketelhuis bedraagt, afhan-
kelijk van het vermogen en de uitvoering van het ketel-
huis, 55 tot 60 dBA op 1 meter afstand van de ketel,
zodat over het algemeen geen akoestische voorzienin-
gen nodig zijn.
5.3 Hydraulische circuits
5.3.1 Enkele ketel
De ketel wordt direct weersafhankelijk voorgeregeld en
de groepen worden weersafhankelijk nageregeld, waar-
bij de stooklijn van de ketel ca. 5°C hoger ingesteld
wordt dan de hoogst vragende groep. De nominale
shuntpompcapaciteit is gelijk aan 25% van de totale
flow, bij een temperatuurverschil van 20°C over de ketel.
Afb 04. Hydraulisch schema, enkele ketel op gescheiden
verdeler met ketelshuntpomp
0003FHS00003
5.3.2 Meer-ketelbatterij
Voorbeeld: twee ketels met cascade-schakeling en
waterzijdige afschakeling van de niet in bedrijf zijnde
ketel.
De ketels worden direct weersafhankelijk voorgeregeld,
waarbij de stooklijn van de ketel ca. 5°C hoger ingesteld
wordt dan de hoogst vragende groep.
Afb 03. Gemiddelde geluidswaarneming op 1 m afstand
van de ketel
Afb 05. Hydraulische schakeling meer-ketelbatterij met
eigen ketelpompen op open verdeler
0003FHS00004
8


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