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Doc430/2789CV01H 41
Wanneer in het systeem luchtverhitters (ventilatie, luchtbehandeling) of platenwarmtewisselaars
(tapwater) opgenomen worden, is er doorgaans een kleine ∆T gewenst over deze luchtverhitters
en/of warmtewisselaars.
De waterhoeveelheid over het totale secundaire circuit is hierdoor meestal groter dan over de
units.
y
De drukloze verdeler dient zodanig gedimensioneerd te zijn dat de watersnelheid het maximum
van 0,5 m/s niet overschrijdt.
In dit geval wordt de diameter van de drukloze verdeler bere kend door het watervolume over het
secundair circuit.
Als het watervolume van het secundaire systeem groter is dan het primaire circuit ontstaat er
een mengtemperatuur die lager is dan de gewenste aanvoertemperatuur uit de unit. De regeling
reageert hierop en stuurt de regelfuncties (kleppen e.d.) in het systeem open. Doorgaans moet
men dan de aanvoertempera tuur vanuit de unit(s) corrigeren voor de in de aangesloten groepen
gewenste temperatuur.
Voor verdere energiebesparing is voor de R2800 en R2900 optioneel een toerengeregelde pomp
verkrijgbaar. Raadpleeg hiervoor uw Rendamax leverancier.
5.4.2.2 Pompkarakteristieken
Fig. 24 Pompkarakteristiek UPS 32-60F Fig. 25 Pompkarakteristiek UPS 32-120F
Fig. 26 Pompkarakteristiek UPS 40-60F Fig. 27 Pompkarakteristiek UPS 50-120F
47


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