Hoval RoofVent CON-9, Design Handbook

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302
4 Condensation lilmit
RoofVent
®
twin heat / twin cool / twin pump
At high humidity levels or extremely low fresh air tempera-
tures, humidity in the extract air may condense in plate heat
exchanger 2. Diagram M1 shows under what air conditions
condensation occurs. In applications where the condensation
limit is exceeded:
■ Connect the condensate drain connection in the combi
box to a condensate drainage system.
■ Where required, use a condensate pump to discharge
condensate through waste water pipes directly below the
ceiling or onto the roof.
■ Use the option drop eliminator for the plate heat
exchanger 1 in the roof unit.
Extract air temperature
Relative extract air humidity [%]
20
30
40
50
60
70
80
90
-20 -15 -10 -5 0 5 10
20 °C
22 °C
24 °C
26 °C
28 °C
Fresh air temperature [°C]
Refers to: Air pressure 1013 hPa
Diagram 1: Condensation limit for plate heat exchanger 2 in RoofVent
®
twin units
System design
Condensation lilmit