Retrotec RSH Pressure Relief Vents Manual do Utilizador descarregar pdf (Página 3)

QG700 Page 3 of 8 rev-2010-08-13

d) The opening must be framed out with similar studs that the wall is made from, e.g. if cutting into

a 2hour fire rated wall with steel studs then steel studs must be used to frame the hole so as to

maintain the 2 hour fire rating. The frame must then be lined with Plasterboard.

e) Mark the flange through which the fixing screws will seat into the framing studs.

Drill 8 of 5/32 inch (4mm) fixing holes 4 inches (100mm) from each corner and thereafter at 8

inch (200mm) intervals. (At this stage it is worth dry fixing the PRV with a couple of screws and

check that the wall liner will fit in and over the back of the PRV from the opposite side).

Please note: It is essential that the unit is fitted square. (Do not try to force into a hole that is

not cut correctly. Distorting the body of the PRV can affect its performance. It is also essential

that the PRV is fitted vertical/plumb. 3° either way is acceptable).

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Retrotec RSH Pressure Relief Vents Manual do Utilizador Página 3