BS EN 13420:2011 pdf download

BS EN 13420:2011 pdf download.Windows — Behaviour between different climates— Test method.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 12519:2004 and the following apply,
3.1
design with low resistance to water vapour diffusion
design which is regarded as being a design with low water vapour diffusion when moisture conditioned by water vapour diffusion can be &ained in the cross-section in a controlled way under specified service conditions. e.g. through sufficient ventilation
NOTE Ses Annex A (informative) and B (normative).
3.2
design with high resistanc, to water vapour diffusion
design which is regarded as being a design with high resistance to water vapour diffusion when as a result of profile covenngs a suffloent draining of the moisture condtioned by water vapour diffusion is impaired In the combined profile
3.3
design being sensitive to deformation
design which is regarded as being sensitive to deformation when under specified service conditions the relative expansion (thermal or hygrornetrical) of the profile may impair the basic functions of the window (e.g. operating forces, air permeability)
3.4
window manufactured of different materials
window whose frame (or sash or both) members are manufactured of non-identical matenals, operating hardware being excluded
EXAMPLES Typ.cal examples:
– basic timber windows clad with aluminium or PVC profiles:
– basic aluminium windows clad with timber (solid proliles or veneers):
– basic plastic windows clad with aluminiixn profiles.
3.5
orientation side I
orientation with an inward looking face
3.6
orientation sIde 2
orientation with an outward looking face
3.7
wet spot
visible moisture accumulation, after climatic exposure, at the interface between timber (or any other hygroscopic materials) and another material
4 PrInciple of tests
4.1 Vapour diffusion
In order to have a temperature below dew point in composite profiles, a graaienl of water vapour diffusion and a gradient of temperature are created; the window is exposed to (his double gradient for a specified time during which the water content of hygroscopic elements is checked,
10 Test sequence
For test method 3 the following test sequence is to be carried out:
air permeability according to EN 1026;
— operatrng forces according to EN 12046-1;
— deformation;
— cold test – climate A (Table 2);
deformation;
operating forces according to EN 12046-1;
— heat test – climate D (Table 2);
— deformation.
— operating forces according to EN 12046-1;
— aw permeabdity3) according to EN 1026.
NOTE For arSysing the test resuls ills reasonable to measure the delormallon of the sash and the frame members
before and after the dlrnatic loading
11 Test report
The test report shall at least contain the following information:
a) reference to this European Standard:
b) name of the test institution;
c) all references necessary for identifying the test specimen;
d) all relevant details concerning the dimensions of the test specimen, Its matenals. the design, the construction and the manufacture and its surface finish and fittings; also its method of delivery to the test laboratory:
e) detailed drawings of the test specimen the scale being 1:1;
f) descsiption of the test facilities:
g) test climates used (with information concerning the test period / test cycles):
h) results of measurement of the moisture content of the hygroscopic materials before and after test methods 1.2.1 arid 22.