** For optimum performance the ventilator should be installed on a flat surface free from defects **
Fixing Instructions
1. Prepare slots accurately and pre-drill
fixing holes. Avoid glazing rebates and
reinforcement.
Recommended screws: 3.5mm (No.6) Round
Head or equivalent.
Fitting Tolerance: Due to the SF Xtra vent
being designed for narrow profiles, the
accuracy of fitting is vital to achieve best
performance. The screws must be fitted on the
same centre line as the slot, with maximum
tolerances of 0.5mm above and 1mm below
the centre line.
2. Fix vent by opening end caps and screwing
to section. DO NOT OVERTIGHTEN SCREWS!
End caps should be delivered closed but not
clicked shut. If they click shut during transit they
can be opened again by gently rotating a flat
blade screwdriver as shown below.
BM492 Iss03
SF Xtra Vent
Fixing and Operating Instructions
Operating Instructions
Open Ventilator at either end by levering open
under end cap.
Close Ventilator by pressing vent at both ends
until both 'click'.
The SF Xtra ventilator allows the user to select
the following projections for complete control:
*click*
10
Deceit Closure
Half Open
Fully Open
*click*
10
Closed
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