Smoke & Heat Extraction Systems
Smoke & Heat Extraction Systems
Smoke & Heat Extraction Systems
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GEZE RWA exhaust systems<br />
geze electrically operated chain drives<br />
Combination of brackets/type of installation<br />
Bracket for<br />
bottom hung window<br />
inward-opening<br />
Frame-Installation<br />
bottom hung window<br />
Outward-opening<br />
Frame-Installation<br />
bottom hung window<br />
inward-opening<br />
Casement Installation<br />
Top hung window<br />
inward-opening<br />
Frame-Installation<br />
Top hung window<br />
Outward-opening<br />
Frame-Installation<br />
Top hung window<br />
inward-opening<br />
Casement Installation<br />
Side hung window<br />
inward-opening<br />
Frame-Installation<br />
Side hung window<br />
Outward-opening<br />
Frame-Installation<br />
Side hung window<br />
inward-opening<br />
Casement Installation<br />
Drive fitting type A s d type A d type A s d type A d type A s d type A d type A<br />
Drive fitting type B d type B s s s s s s s s<br />
without drive fitting d type B s s d type B s s d type B s s<br />
GEZE RWA<br />
<strong>Smoke</strong> and heat<br />
extraction systems<br />
(RWA)<br />
Where there are several alternatives available, selection depends on the window size, structural circumstances and chain stroke chosen.<br />
d = yes<br />
s = no<br />
RWA chain drive E 820 on bottom hung and top hung windows that open inwards and outwards<br />
Calculation of the area of application depending on casement weight and casement dimensions<br />
Permissible wind loads must be taken into consideration!<br />
Equation for calculating opening and closing force:<br />
F =<br />
p x stroke x 0.54<br />
b<br />
Example for E 820 in individual operation:<br />
P = 25 kg = approx. 250 N<br />
Stroke = 400 mm<br />
b = 1000 mm<br />
250 x 400 x 0.54<br />
F =<br />
1000<br />
F max. = 250 N per drive<br />
F = 54 N<br />
Key<br />
F Opening and closing force required (N)<br />
P Casement weight (kg)<br />
Stroke Casement path/drive stroke (mm)<br />
b Casement height (mm)<br />
Top hung windows<br />
Bottom hung window<br />
Stroke<br />
F<br />
Example for two drives E 820 Syncro:<br />
P = 95 kg = approx. 950 N<br />
Stroke = 400 mm<br />
b = 800 mm<br />
950 x 400 x 0.54<br />
F =<br />
800<br />
F = 257 N<br />
b<br />
F<br />
P<br />
Stroke<br />
P<br />
b<br />
Casement panel weight:<br />
max. 30 kg/m 2 (drive cannot be swivelled)<br />
max. 40 kg/m 2 (drive can be swivelled)<br />
Max. pushing and pulling force depends on the drive stroke<br />
(see force-path diagram). This must be considered in the<br />
calculation<br />
Force-path diagram<br />
Force F (N)<br />
Pull<br />
Pressure<br />
(shaded area)<br />
Stroke (mm)<br />
GEZE RWA systems<br />
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