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Montage- en bedieningsrichtlijnen
Gascondensatieketel WTC-GB 120 … 300-A
5 Installatie
83251707 1/2020-08 La 24-124
5 Installatie
5.1 Eisen aan het verwarmingswater
Het verwarmingswater moet aan de VDI-richtlijn 2035 of aan vergelijkbare lokale
voorschriften voldoen.
Onbehandeld vul- en navulwater moet dezelfde kwaliteit hebben als drinkwater
(kleurloos, helder, zonder afzetting).
Het vul- en navulwater moet vooraf gefilterd zijn (maaswijdte max25µm).
De pH-waarde moet bij 8,5±0,5 liggen.
Er mag geen zuurstof in het verwarmingswater ingebracht worden
(max 0,02 mg/l).
Bij niet diffusiedichte installatiecomponenten moet het toestel door een systeem-
scheiding van de stookkring losgekoppeld worden.
5.1.1 Waterhardheid
De toegelaten waterhardheid wordt in verhouding tot de hoeveelheid vul- en
navulwater bepaald.
Uit diagram afleiden of er maatregelen voor de waterzuivering getroffen moeten
worden.
Als het vulwater zich in het bereik boven de grenscurve bevindt:
Vul- en navulwater behandelen.
Als het vulwater zich in het bereik onder de grenscurve bevindt, moet het water niet
behandeld worden.
Hoeveelheid vul- en navulwater documenteren.
WTC 120 / WTC 170
WTC 120
WTC 170
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1Hoeveelheid vul- en navulwater [liter]
2Totale hardheid [°dH]
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