Formulas And Recommendations For Installation; Technical Information About Function - GIESSE VARIA SLIM BASE Manuel D'utilisation Et D'installation

2. FORMULAS AND RECOMMENDATIONS FOR INSTALLATION

2.1. Calculation of opening / closure force
Using the formulas on this page, approximate calculations can be made for the force required to open
or close the window considering all the factors that determine the calculation.
Symbols used for the calculation
F (Kg) = Force for opening or closing
C (cm) = Opening stroke (actuator stroke)
For horizontal light domes or
F = 0.54 x P
(Eventual weight of snow or wind on the
cupola should be calculated separately).
2.2. Maximum opening according to height of sash
The actuator stroke is in accordance with the height of the sash and its application. Check that the
actuator stroke does not touch the profile of the sash and that the chain does not exert force on the
window frame (measurements in mm).
A . For safety reasons the actuator should not be assembled if dimensions are inferior to
TTENTION
those indicated in the table below. In the event that the height of the sash should be lower, call on the
manufacturer to check the appliance.
Light domes, skylights or vertical top hung windows
opening outwards with frontal assembly
Top hung windows opening outwards with horizontal assembly
Bottom hung windows (motor on frame)
Bottom hung windows (motor on sash)

3. TECHNICAL INFORMATION ABOUT FUNCTION

The chain actuator opens and closes the window using a double row steel chain inside a sheath.
Movement is generated using electrical energy that powers a reduction motor controlled by a functional
electrical device. Windows can be programmed to open and the device allows chain opening at 240
and 360 mm. When the window returns to start position, that is during closure, the stroke-end uses an
electronic self regulating process with absorption of energy and no regulation is therefore required.
skylights
Mode of installation
P (Kg) = Weight of the window (mobile sash only)
H (cm) = Height of the mobile sash
For vertical windows
▪
TOP HUNG WINDOWS
▪
BOTTOM HUNG WINDOWS
F = 0.54 x P x C : H
(Eventual load of favourable or unfavourable wind
on the sash should be calculated separately.)
25
, (A)
OUTWARD OPENING
(B)
Selection of actuator stroke
240
400
400
400
Consult manufacturer
360
550
550
550