SystemAir DVV Series, Installation And Operating Instructions Manual, Page: 24 / 68

Electrical connection
24 DVV 17.12.2012
NOTE
In some cases it is better to mount accessories before placing the fan on the roof base.
CAUTION
At DVVI
•
The corners of sound attenuator are provided with securing bolts during transport and lifting. Remove
them directly before mounting and change with the supplied ones.
At DVV/DVVI 1000, 1000 ‐ M, 1000 ‐ P
•
Suction side is equipped with a short nozzle, which contribute to better ex ‐
traction. If the suction side should be provided with a flap VKV/F rsp. con ‐
nected to a duct, remove the nozzle before mounting. After removing the
nozzle, all screws should be well tightened to prevent ingress of moisture.
NOTE
It is recommended to install a certified flexible connection (needed for smoke extract fans only) between
fan and duct to avoid eventual tensions or distortions of the base plate. Flexible connection has to comply
temperature/time class of the fan (400°C/2h rsp. 600°C/2h).
NOTE
Mounting examples with accessories see Appendix 2. Mounting faults see Appendix 3.
7 Electrical connection
The wiring diagram is placed on the cover of connection box/service switch (inside).
WARNING
Hazard from hot surface at smoke extract fans!
•
The quality and routing of power supply cable must ensure uninterrupted energy supply, also in case
of fire. Inside fire zone use only certified cable. Electric cable must not touch or be fastened on the
casing of the fan.
NOTE
•
IE2 motors have serial built ‐ in PTC (at other motors on request). More than two PTC chains may not be
switched in series, as this can lead to undefined cut ‐ outs.
•
Maximum check voltage of PTC is 2,5 V.
•
The wiring diagrams see Appendix 4.