Hoval RoofVent CON-9, Design Handbook

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5 Oil-proof design
RoofVent
®
units in oil-proof design are suitable for use in
applications with oil-containing extract air. The following
features ensure trouble-free operation of the system:
■ Oil-proof materials
■ Special extract air filter (class F5)
■ Condensate drain from the plate heat exchanger to the
drip tray in the filter box
■ Filter box F25 in oil-tight design with integrated oil/conden-
sate drip tray and drain connection
Note
Due to the greater pressure drop of the extract air
filter, the exhaust air flow rate is approx. 5 % lower.
Despite all precautions, there are still residual risks:
■ Oil-saturated components can ignite in the event of flying
sparks (fire hazard).
■ Environmental pollution from the residual oil escaping
from the exhaust air.
■ With higher concentrations of oil aerosols, droplets can
form on the outside of the below-roof unit and drip into the
occupied area.
Condensate drain
Connection for oil/condensate drain
Fig. K1: RoofVent
®
units in oil-proof design
Please note the following:
■ Install an oil/condensate drain with a siphon trap in
accordance with the local provisions to remove these
types of emulsions.
■ Do not damage or drill into the filter box, in order not to
breach the sealing.
■ Check the extract air filter at regular intervals.
RoofVent
®
units in oil-proof design are not available with the
short filter box F00, with a long filter box or with filter boxes in
special lengths.
Fig. K2: Dimensional drawing for oil/condensate drain (in mm)
52
60
Rp ¾"
Options
Oil-proof design