Trox BVD F600, Installation And Operation Manual

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SDV sound attenuating hood
Fig. 26: SDV sound attenuating hood
SDV sound attenuating hood with vertical air outlet
screwed to the roof fan base plate. The sound attenu-
ating hood contains the internally and externally active
sound attenuator made of non-combustible, abrasion-
resistant absorption material.
SDH sound attenuating hood
Fig. 27: SDH sound attenuating hood
The sound attenuating hood can be fitted on all roof
fans in the DRH and DRV construction styles at a later
date. The sound attenuating hood consists of a circular
silencer with an outer cover made of sendzimir galvan-
ised sheet steel.
Contact cover grille
Contact cover grille on the intake opening during free
inlet flow (optional).
Self-powered shut-off damper
Self-powered damper in the inlet duct with pressed-on
bellmouth inlet for ducted suction.
VD fan diagnostic system (or shock pulse measure-
ment)
Fig. 28: VD-R2-1_6
The VD fan diagnostic system monitors the state of the
fan by measuring physical characteristics. This facili-
tates maintenance of the fans. The replacement inter-
vals for components and motors are extended.
Volume flow rate measuring unit VME
The volume flow rate measuring unit (VME) determines
the operating volume flow rate and enables quick and
affordable fan regulation.
The measuring point of the ring measuring line of the
intake-side VME shaft must be connected to the VME
connecting braked on the fan with a measuring hose. In
general, the measuring hose for the VME shaft is
prelaid to the fan. The open end is attached to the fan
as a ring for transport purposes. During the installation
of the VME, this measuring hose is connected to the
ring measuring cable of the VME shaft. For more infor-
mation, see the separate instructions .
Parts and function
Description of the sub-assembly > Additional equipment for roof fans
Centrifugal roof fans DRH; DRV; DRVF; DRVF-H; BVD; BVD(F600) 24