3
Smoke damper
rev 21-10
installed in single compartment smoke ducts to concentrate all the depression of the smoke extraction
fan in the smoke reservoirs actually affected by the presence of smoke. This fire protection project shall be
designed by a fire expert. The products used in system should not be larger than dimension Ø 630.
Testing and classification
The WXH single compartment smoke control dampers have been tested connected to single compart-
ment circular ducts and fittings belonging to the Lindab (www.lindab.com) smoke and heat exhaust
ventilation system.
WXH smoke control dampers have two relay response options: type AA (Automatic Activation) and type
MA (Manual Activation).
In accordance with EN12101-8:2011 WXH single compartment smoke control dampers have been subjec-
ted to the following tests:
- Opening and closing cycles according to EN1366-10:2011+A1:2017: 10000 cycles at nominal operating
supply, 100 cycles at nominal operating supply -10%, 100 cycles at nominal operating 15%.
- Blade and casing ambient leakage according to EN1751:2014 with pressure from -2000Pa to +2000Pa
obtaining the classification in class 2 for the air tightness of the blade and class C for the air tightness of
the casing.
- Extraction system ambient leakage according to EN1366-10:2011+A1:2017 with pressure -1500Pa (level
3).
- 600°C temperature resistance according to EN1366-10:2011+A1:2017 with pressure -500Pa (level 3)
for 120 minutes with damper installation both horizontal and vertical and with blade rotation axis both
horizontal and vertical.
The fire classification obtained according to EN13501-4:2016 is:
According to the classification obtained, according to Tables 1 and 3 (level 3) and according to paragraph
6.3.2.2 of EN1366-10:2011+A1:2017 it is allowed to use single compartment smoke control dampers WXH:
- In single compartment smoke exhaust ventilation system;
- In general HVAC systems as well as a smoke control system;
- With depression for smoke exhaust up to -500Pa;
- With pressure at ambient temperature from -1500Pa to +500Pa.
E
I
t
Ved
ho
i
o
S
Operating pressure
C
MA/
AA
Single/
multi
E6oo -
120 v
ed
h
od
i
o
S
-1500 Pa to 500 Pa
10000
MA
single
E6oo -
120 v
ed
h
od
i
o
S
-1500 Pa to 500 Pa
10000
AA
single
According to par. 9.7.1 of EN1366-10:2011+A1:2017, single compartment smoke control dampers may be
applied to ducts that have been tested to EN 1366-9, constructed from materials of the same density as
those tested or of the same material with a greater density or thickness.
Single compartment smoke control dampers may be applied to builders work (created on site) ducts,
concrete or aerated concrete ducts and walls, provided that the single compartment smoke control
damper has been tested on a duct or in a wall constructed from materials of lower density and thickness
(e.g. boards or sheet steel), provided that the concrete/aerated concrete construction has a thickness that
complies with the supporting construction information shown in EN 1363-1 and EN 1366-2 for the time
period of classification required. Correct fire resisting fasteners to suit the materials shall be used.
