Formulas And Recommendations For Installation; Calculation Of Opening / Closure Force; Maximum Opening In Accordance With Sash Height; Technical Information About Function - GIESSE RACK MAX 650 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 skylights
F = 0,54 x P
(Eventual weight of snow or wind on the
cupola should be calculated separately).
2.2.

Maximum opening in accordance with sash height

The actuator stroke should be selected in accordance with the height of the sash and its
application. Make sure that the actuator does not touch the profile of the sash when
moving along its track, and ensure there are no obstacles blocking the opening and that
the rack moves smoothly along the window frame.
A . For safety reasons, always check application before fixing the actuator to the
TTENTION
frame or sash. In the event of difficulty, request assistance from the manufacturer to
check application.

3. Technical information about function

The rack actuator performs opening and closing movements for the window using a round
section steel rack. Movement is powered by electricity that feeds a reduction motor
controlled by an electronic board.
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.)
37
,
OUTWARD OPENING
(B)
(A)