prEN 1366-12

SLOVENSKI STANDARD
01-januar-2011
Preskušanje požarne odpornosti inštalacij - 12. del: Nemehanske požarne lopute
Fire resistance tests for service installations - Part 12: Non-mechanical fire dampers
Feuerwiderstandsprüfungen für Installationen - Teil 12: Brandschutzverschlüsse für
Lüftungsleitungen
Ta slovenski standard je istoveten z: prEN 1366-12
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2010
ICS
English Version
Fire resistance tests for service installations - Part 12: Non-
mechanical fire dampers
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 127.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the
same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1366-12:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .4
Introduction .5
1 Scope .6
2 Normative references .6
3 Terms and definitions .6
4 Test equipment .6
4.1 General .6
4.2 Connecting duct .6
4.3 Volume flow measuring station .7
4.4 Condensing unit .7
4.5 Gas temperature measuring devices .7
4.6 Exhaust fan system .7
5 Test conditions .7
6 Test specimen .7
6.1 Size .7
6.2 Number of tests .8
6.3 Design .8
6.3.1 General .8
6.3.2 Orientation to be tested .8
6.3.3 Fire dampers installed within a wall or floor opening.8
6.3.4 Fire dampers mounted on to the face of a wall or floor .9
6.3.5 Fire Dampers mounted remote from a wall or floor .9
6.3.6 Thermal release mechanism .9
7 Installation of test specimen .9
7.1 General .9
7.2 Supporting construction .9
7.3 Minimum separation . 10
8 Conditioning . 10
9 Application of instrumentation . 11
9.1 Thermocouples . 11
9.1.1 Furnace thermocouples (plate thermometers) . 11
9.1.2 Unexposed surface temperature . 11
9.2 Furnace pressure . 11
9.2.1 General . 11
9.2.2 Pressure differential measurement, furnace and connecting duct . 11
10 Test procedure . 11
10.1 Determination of leakage of connecting duct and measuring station . 11
10.2 Fire test procedure . 12
11 Performance criteria . 13
12 Test report . 14
13 Field of direct application of test results . 15
13.1 Size of fire damper . 15
13.2 Fire dampers installed within structural openings . 15
13.3 Fire dampers installed onto the face of a wall or a floor . 15
13.4 Fire dampers remote from a wall or floor . 15
13.5 Separation between fire dampers and between fire dampers and construction elements . 15
13.6 Supporting constructions . 15
Annex A (informative) EOTA TR024 − Characterisation, Aspects of Durability and Factory
Production Control for Reactive Materials, Components and Products . 27

Foreword
This document (prEN 1366-12:2010) has been prepared by Technical Committee CEN/TC 127 “Fire safety in
buildings”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
Introduction
The purpose of the test is to evaluate the ability of a non-mechanical (no moving parts) fire damper to prevent
fire and smoke spreading from one fire compartment to another through the air ductwork system which may
penetrate fire separating walls and floors.
It identifies the requirements needed to adapt the test method described in EN 1366-2 (which was intended for
mechanical dampers) to suit non-mechanical fire dampers.
Non-mechanical fire dampers are unable to achieve an “S” classification, which requires a known ambient
leakage, as they are unable to be closed except under fire conditions.
The non-mechanical fire damper is attached (directly or remotely via a section of ducting), to a fire separating
element in a manner representative of practice.
Tests are performed starting with the fire damper in its cold standard state to expose it to furnace conditions.
Temperature and integrity measurements are carried out in various parts of the test construction during the
test. The leakage of the fire damper system is measured (continuously during the test) by direct flow
measurements whilst maintaining a constant pressure differential across the closed fire damper of 300 Pa.
CAUTION — The attention of all persons concerned with managing and carrying out this fire
resistance test is drawn to the fact that fire testing may be hazardous and that there is a possibility
that toxic and/or harmful smoke and gases may be evolved during the test. Mechanical and
operational hazards may also arise during the construction of the test elements or structures, their
testing and disposal of test residues.
An assessment of all potential hazards and risks to health should be made and safety precautions
should be identified and provided. Written safety instructions should be issued. Appropriate training
should be given to relevant personnel. Laboratory personnel should ensure that they follow written
safety instructions at all times.

1 Scope
This European Standard specifies a method for determining the fire resistance of non-mechanical fire
dampers installed in fire separating elements designed to withstand heat and the passage of smoke and
gases at high temperature. The Standard is used in conjunction with EN 1363-1 and EN 1366-2.
This standard is not suitable for testing non-mechanical fire dampers in suspended ceilings without
modification.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
prEN 520, Gypsum plasterboards ― Specification ― Test method (ISO 6308:1980 modified)
EN 1363-1:1999, Fire resistance tests ― Part 1: General requirements
EN 1366-2:1999, Fire resistance tests for service installations ― Part 2: Fire dampers
EN ISO 13943:2010, Fire safety ― Vocabulary (ISO 13943:2008)
EN ISO 5167-1, Measurement of fluid flow by means of orifice plates, nozzles and venturi tubes inserted in
circular cross-section conduits running full (ISO 5167-1:1991)
ISO 5221, Air distribution and air diffusion ― Rules to methods of measuring air flow rate in an air handling
duct
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1363-1:1999, EN1366-2:1999 and
EN ISO 13943:2010, together with the following, apply.
3.1
non-mechanical fire damper
device with no moving parts for use in HVAC ventilation systems at fire boundaries that changes state to
maintain compartmentation in the event of a fire
4 Test equipment
4.1 General
In addition to the test equipment specified in EN 1363-1, and if applicable, EN 1363-2, the following is
required: Examples of test configurations are shown in figures 1 and 2.
4.2 Connecting duct
The connecting duct shall be of all welded construction fabricated from (1,5 + 0,1) mm thick steel with a width
and height appropriate to the size of fire damper being tested. The duct shall have a length of two times the
diagonal dimension of the damper up to a maximum of 2 m. The connecting duct shall be provided with a gas
tight observation window.
4.3 Volume flow measuring station
This shall consist of a venturi, orifice plate, or other suitable device and (where necessary) an air flow
straightener, installed in straight lengths of pipe, all sized to EN ISO 5167-1 and ISO 5221. It shall be installed
between the connecting duct and the exhaust fan to determine the volume flow rate of gases passing through
the fire damper under test. The measuring device shall be capable of measuring to an accuracy of ± 5%.
Regardless of whether vertical or horizontal fire dampers are being tested, the volume flow measuring station
shall always be used in a horizontal orientation.
4.4 Condensing unit
Where materials used in the construction of an fire damper may generate quantities of steam during the fire
test, a condensing unit having provision for drainage shall be installed between the fire damper and the flow
measuring device. When using the condensing device, the temperature recorded by the thermocouple
positioned downstream of the flow measuring device described in 4.3 shall not exceed 40 °C.
4.5 Gas temperature measuring devices
These shall be positioned adjacent to the flow measuring device. A suitable device is a 1,5 mm diameter
sheathed thermocouple orientated vertically with its measuring junction located at the centre line of the
measuring duct and at a distance equal to twice the diameter of the measuring duct downstream from the flow
measuring device. A similar thermocouple shall be located at the exit from the connecting duct plenum (see
figure 1).
4.6 Exhaust fan system
This shall be capable of controlling the flow rates and maintaining the specified pressure differential between
the connecting duct and the furnace when the fire damper is closed.
The 300 Pa (or higher if applicable) pressure differential shall be regulated by means of a dilution damper
installed just before the fan inlet. The pressure shall be controlled to within + 5% of the specified value. A
balancing damper shall be fitted at the outlet of the fan to adjust the pressure range of the systems to suit the
fire damper under test. A variable speed fan may be used instead of the dilution damper.
5 Test conditions
The heating conditions and the furnace atmosphere shall conform to those given in EN 1363-1, or if
applicable, EN 1363-2.
The furnace pressure shall be controlled to EN 1363-1, except in the case of testing fire dampers installed in a
vertical separating element when the pressure shall be controlled to (15 ± 3) Pa at mid height of the fire
damper . If two such fire dampers are being tested simultaneously, this pressure shall be established at mid
height of the lower fire damper.
For fire damper installed in a horizontal separating element the pressure shall be controlled to (20 ± 3) Pa at
100 mm below the underside of the separating element to which it is fixed.
Details of pressure conditions within the connecting duct are given in 9.2.
6 Test specimen
6.1 Size
For the fire test, see 10.4, the maximum size of fire damper shall be tested. For the determination of leakage
at ambient temperature test, see 10.3, both the smallest and the largest size fire damper shall be tested.
6.2 Number of tests
The number of test specimens required shall be determined from tables 1 and 2. For establishing the
symmetry of a fire damper, the presence of the actuating mechanism can be ignored. However, in such a
case if the fire damper incorporates a thermal release mechanism it shall be installed so that the thermal
release mechanism is on the side away from the furnace. This is considered to be the more onerous condition
because as it will be further from the furnace, the time to its operation will be consequently longer.
When insulated fire dampers are faced fixed to a wall, then two tests are required; one with the fire damper
inside the furnace and one outside. In the case of an un-insulated fire damper fixed in this manner, only a fire
damper on the inside of the furnace needs to be tested, as this is considered to be to the most onerous
condition.
Table 1 ― Number of tests − Standard application
Fire damper installation Asymmetrical fire Symmetrical fire
application in practice damper damper
Installed within a wall 2 1
Installed within a floor 2 1
Table 2 ― Number of tests − Special application
Fire damper installation Asymmetrical fire Symmetrical fire
application in practice damper damper
Installed on face of wall 2 1
Installed on face of floor 2 1
Damper mounted on section of duct 1 for wall application 1 for wall application
in the fire compartment (wall and 1 for floor application 1 for floor application
floor application)
Damper mounted on section of duct 1 1
outside the fire compartment (wall
only)
6.3 Design
6.3.1 General
The test shall be made on a test specimen representative of the assembly on which information is required.
6.3.2 Orientation to be tested
Fire dampers which are to be installed in both horizontal and vertical constructions shall be tested in both
orientations.
6.3.3 Fire dampers installed within a wall or floor opening
Fire dampers which are to be installed within an opening in line with a wall shall be tested as shown in
figure 1. Fire dampers which are to be installed within an opening in line with a floor shall be tested as shown
in figure 2.
6.3.4 Fire dampers mounted on to the face of a wall or floor
Uninsulated fire damper which are to be mounted onto the face of a wall or floor shall be tested with the fire
damper positioned within the furnace. An example of a fire damper mounted onto the face of a wall inside the
furnace is shown in figure 4.
Insulated fire dampers which are to be mounted onto the face of a wall or floor shall be tested from both sides
so that the insulation properties of the fire damper body, and where appropriate the duct, can be evaluated.
An example of a fire damper mounted onto the face of a wall outside the furnace is shown in figure 5. Fire
dampers which can be mounted above or below the floor shall be subjected to fire from below.
6.3.5 Fire Dampers mounted remote from a wall or floor
6.3.5.1 General
For test purposes, fire dampers which are to be mounted remote from the wall or floor shall be attached to a
length of ductwork. This duct shall be attached to the supporting construction with the fire damper installed at
the other end of the duct. This ductwork shall be considered as part of the test specimen and shall be installed
by the sponsor.
6.3.5.2 Fire dampers mounted inside the furnace
The length of ductwork inside the furnace described in 6.3.5.1 shall be (1500 + 50) mm. The distance between
the outer surface of the duct and the furnace wall, roof or floor shall be not less than 500 mm. An example of a
fire damper mounted remote from a wall inside the furnace is given in figure 6.
6.3.5.3 Fire dampers mounted outside the furnace
The length of ductwork outside the furnace described in 6.3.5.1 shall be (500 + 50) mm. An example of a fire
damper mounted remote from a wall outside the furnace is given in figure 7.
6.3.6 Thermal release mechanism
The thermal release mechanism shall be included in the test specimen configuration. Where alternative
release mechanisms are in series with the basic thermal release mechanism and can be shown not to inhibit
the basic release mechanism then only the one such mechanism is required to be tested.
7 Installation of test specimen
7.1 General
The test specimen shall be installed, as far as possible, in a manner representative of practice.
The fire damper shall be installed and sealed as in practice in a supporting construction in accordance with
the manufacturer's instructions. Where the manufacturer of the fire damper requires it to be tested in a length
of insulated ductwork he shall specify the length over which the duct is to be insulated as shown in figure 7.
7.2 Supporting construction
The supporting construction selected shall have fire resistance equal to (or less than, at the request of the
sponsor) the anticipated fire resistance of the fire damper being tested.
Information on the applicability of the test results when a specific supporting construction is given in clause 13.
Examples of standard supporting constructions are given in table 3 to 5.
Table 3 ― Standard rigid wall constructions
Type of Thickness mm Density Test duration t
construction
kg/m h
Normal concrete/ 110 ± 10 2200 ± 200 t ≤ 2
masonry 150 ± 10 2200 ± 200
2 < t ≤ 3
175 ± 10 2200 ± 200
3 < t ≤ 4
a
Aerated concrete 110 ± 10 650 ± 200
t ≤ 2
150 ± 10 650 ± 200
2 < t ≤ 4
a
This supporting construction may be made from blocks, bonded together with mortar or
adhesive.
Table 4 ― Standard flexible wall constructions (gypsum plasterboard type F to EN 520)
Fire resistance Wall constructions
Number of layers Thickness Insulation Thickness
min
on each side
mm ρ/D mm
± 10%
30 1 12,5 40/40 75
60 2 12,5 40/40 100
90 2 12,5 60/50 125
120 2 12,5 60/100 150
180 3 12,5 60/100 175
240 3 15 80/100 190
D is the thickness in mm of mineral wool insulation inside the wall
ρ is the density in kg/m³ of mineral wool insulation inside the wall

Table 5 ― Standard floor constructions
Type of Thickness Density Test duration t
construction
mm kg/m h
Normal concrete 110 ± 10 2200 ± 200 t ≤ 1,5
150 ± 10 2200 ± 200
1,5 < t ≤ 3
175 ± 10 2200 ± 200
3 < t ≤ 4
Aerated concrete 125 ± 10 650 ± 200
t ≤ 2
150 ± 10 650 ± 200
2 < t ≤ 4
7.3 Minimum separation
If more than one damper is tested at one time the distance between the fire dampers shall not normally be
less than 200 mm, as shown in figures 9 and 10. However, if a specific installation requires fire dampers to be
closer, then they shall be tested to the minimum separation used in practice.
...