Fan Description - Zehnder VDA EExe Serie Bedienungsanleitung

The VDA EExe may only be installed,
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connected and rendered operational by
a registered installer;
Always follow the safety regulations,
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warnings, comments and instructions
given in this manual;
Store the manual in the vicinity of the
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VDA EExe for its entire working life;
Modifications may not be made to the
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VDA EExe.
We recommend that a maintenance
agreement is taken out, so that the unit is
regularly checked. Your manufacturer can
provide you with addresses of authorised
fitters in your region.
Safety provisions and measures to be
taken
It must not be possible to touch moving
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parts by hand;
In order to avoid contact by persons or
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the suction of foreign objects, the fan
must have a metal grille of mesh size 12
mm (IP20) fitted to the suction side, or a
similar form of protection on the suction
side of the fan if it is not protected by
virtue of the method of mounting the
fan;
When commissioning for the first
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time or taking back into operation
after maintenance work, follow the
instructions as given in this manual;
The operating switch fitted to the
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outside of the roof extract fan must not
be used as an on/off switch;
Before opening the fan housing or
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electrical connection, the roof extract
fan motor must have been completely
disconnected from the mains network;
The unit cannot be opened without the
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use of tools.
18 - EN

5. Fan description

The vertically exhausting roof fans
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of the EExe type have a centrifugal
impeller made from aluminium with
backward-curved blades;
The fan housing is made from top
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quality, glass fibre reinforced plastic
and has a black, anti-static coating;
The fan is balanced in accordance
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with class BV as stated in EN14964.
Ventilators with capacities of up to 3.7
kW are balanced in accordance with
class BV2. Ventilators with capacities
of more than 3.7 kW are balanced in
accordance with class BV3.
5.1. Application
The roof extract fans are suitable for
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extraction of used air or polluted air.
The exhaust air is vertically exhausted;
The roof extract fans are not suitable
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for the input of fresh air from outside;
The roof extract fans are suitable for
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connection to the mains network and
for continuous operation (S1);
The roof extract fans type VDA .../.D
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EX from Zehnder are suitable for use
in zones 1 and 2, gas groups II and
temperature classes T1 to T3;
The roof extract fans may not be
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used in rooms containing explosive
substances;
The exhaust air flow may not contain
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any solids or liquids;
The exhaust air or ambient temperature
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of the roof extract fan is -20°C to
+40°C.