MVA 02 rev 5 - December 2017
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3.2
Installation type A: Instructions for assembly, installation and connections
In case of type A installations, since neither the intake nor exit of the fan are connected to ducts, guards
must be fitted on both the intake and the exit.
Guard dimensions can be obtained from the dimensional drawing given in catalogues, from scale and non-
scale drawing programs downloadable from the reserved area of the website, or from any dimensional
drawings provided as documentation together with the products supplied.
CAUTION:
Guards are designed to protect against accidental contacts and to resist the pressures
generated only by the fan to which they are fitted.
Each guard, if supplied individually, can be used only on the fan for which it was designed. If
therefore a guard is ordered individually, it is compulsory to provide the reference details of the
fan to which it will be fitted (serial number).
Guards of the type shown in Chart 3-1 must be bolted to the fan intake and exit. Chart 3-1 also shows,
highlighted with a grey background, the guards that depending on the installation type supplied constitute
part of the fan itself.
Guard types are shown in Fig. 3.-1, Fig. 3-2, Fig. 3-3, Fig. 3-4, Fig. 3-5 and Fig. 3-6.
Fasteners for each type and size of guard are shown in Chart 3-2, and tightening torques in Chart 12-1.
Assembly diagrams for guards are shown in Fig. 3-7, Fig. 3-8, Fig. 3-9, Fig. 3-10, Fig. 3-11 and Fig. 3-12
respectively.
For flow definitions see Paragraph 2.1
Definitions, basic principles, terminology used and
correlated documents.
