Fire tests -- Smoke-control door and shutter assemblies -- Part 1: Ambient- and medium-temperature leakage tests

The test described in this part of ISO 5925 determines the rate of leakage of ambient (cold) and medium
(warm) temperature smoke from one side of door and shutter assemblies to the other under the specified test
conditions. The test is applicable to door and shutter assemblies of different configurations intended for
purposes of controlling the passage of smoke in case of fire.
The acceptable leakage rates for different situations are not addressed in this part of ISO 5925, but rather are
specified by the regulations of the controlling authorities.
The principle of the test is explained briefly in Annex A.

Essais au feu -- Assemblages porte et volet pare-fumée -- Partie 1: Essais de fuite à température ambiante et moyenne

Požarni preskusi - Dimna vrata z opremo - 1. del: Preskus pri sobni in srednji temperaturi

Preskus, opisan v tem delu standarda ISO 5925, določa stopnjo uhajanja dima pri sobni (hladni) in srednji (topli) temperaturi z ene strani vrat z opremo na drugo stran pod opredeljenimi preskusnimi pogoji. Preskus se uporablja za sestave vrat in opreme z različnimi konfiguracijami, ki so namenjeni nadzorovanju prehajanja dima v primeru požara.
Sprejemljive stopnje uhajanja v različnih situacijah niso obravnavane v tem delu standarda ISO 5925, temveč so opredeljene v predpisih nadzornih organov.
Načelo preskusa je na kratko pojasnjeno v dodatku A.

General Information

Status
Published
Public Enquiry End Date
29-Jul-2018
Publication Date
23-Aug-2018
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
13-Aug-2018
Due Date
18-Oct-2018
Completion Date
24-Aug-2018

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INTERNATIONAL ISO
STANDARD 5925-1
Second edition
2007-09-15
Fire tests — Smoke-control door and
shutter assemblies —
Part 1:
Ambient- and medium-temperature
leakage tests
Essais au feu — Assemblages porte et volet pare-fumée —
Partie 1: Essais de fuite à température ambiante et moyenne
Reference number
ISO 5925-1:2007(E)
ISO 2007
---------------------- Page: 1 ----------------------
ISO 5925-1:2007(E)
PDF disclaimer

This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but

shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In

downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat

accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.

Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation

parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In

the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

COPYRIGHT PROTECTED DOCUMENT
© ISO 2007

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or

ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2007 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 5925-1:2007(E)
Contents Page

Foreword............................................................................................................................................................ iv

Introduction ........................................................................................................................................................ v

1 Scope ..................................................................................................................................................... 1

2 Normative references ........................................................................................................................... 1

3 Terms and definitions........................................................................................................................... 1

4 Symbols and abbreviated terms ......................................................................................................... 2

5 Test apparatus ...................................................................................................................................... 3

6 Instrumentation..................................................................................................................................... 4

6.1 Differential pressure............................................................................................................................. 4

6.2 Air temperature ..................................................................................................................................... 4

6.3 Air flow................................................................................................................................................... 4

7 Test specimen ....................................................................................................................................... 4

7.1 Number .................................................................................................................................................. 4

7.2 Size......................................................................................................................................................... 4

7.3 Construction.......................................................................................................................................... 4

7.4 Conditioning.......................................................................................................................................... 4

7.5 Pre-test analysis ................................................................................................................................... 5

8 Test procedure ...................................................................................................................................... 5

8.1 Setting-up procedure............................................................................................................................ 5

8.2 Air leakage test ..................................................................................................................................... 5

9 Observations ......................................................................................................................................... 6

10 Expression of results ........................................................................................................................... 6

11 Test report ............................................................................................................................................. 7

12 Field of direct application .................................................................................................................... 8

Annex A (informative) Test principle................................................................................................................ 9

Annex B (normative) Test apparatus ............................................................................................................. 10

Bibliography ..................................................................................................................................................... 11

© ISO 2007 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 5925-1:2007(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the

International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 5925-1 was prepared by Technical Committee ISO/TC 92, Fire safety, Subcommittee SC 2, Fire

containment.

This second edition cancels and replaces the first edition (ISO 5925-1:1981), which has been technically

revised.

ISO 5925 consists of the following parts, under the general title Fire tests — Smoke-control door and shutter

assemblies:
⎯ Part 1: Ambient- and medium-temperature leakage tests

⎯ Part 2: Commentary on test method and the applicability of test conditions and the use of test data in a

smoke containment strategy
iv © ISO 2007 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 5925-1:2007(E)
Introduction

This part of ISO 5925 has been prepared to provide a test method for determining the smoke leakage through

door and shutter assemblies. It is part of the series of International Standards dealing with fire doors, e.g.

ISO 3008.

This second edition of ISO 5925-1 combines the procedure published in the first edition and the proposed

revisions to it on medium-temperature testing. A further test procedure planned as Part 3 for high-temperature

testing is currently in abeyance. Additional requirements for the installation and use of smoke-control door and

shutter assemblies can be found in other International Standards and national regulations.

© ISO 2007 – All rights reserved v
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 5925-1:2007(E)
Fire tests — Smoke-control door and shutter assemblies —
Part 1:
Ambient- and medium-temperature leakage tests
1 Scope

The test described in this part of ISO 5925 determines the rate of leakage of ambient (cold) and medium

(warm) temperature smoke from one side of door and shutter assemblies to the other under the specified test

conditions. The test is applicable to door and shutter assemblies of different configurations intended for

purposes of controlling the passage of smoke in case of fire.

The acceptable leakage rates for different situations are not addressed in this part of ISO 5925, but rather are

specified by the regulations of the controlling authorities.
The principle of the test is explained briefly in Annex A.
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.

ISO 834-1, Fire-resistance tests — Elements of building construction — Part 1: General requirements

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
door and shutter assembly

complete assembly, including any frame or guide, door leaf or leaves, rolling or folding curtain, etc., which is

provided for closing of permanent openings in separating elements

NOTE This includes all side-panels, vision panels or transom panels, grilles and louvers together with door hardware,

and any fire seals, smoke seals, draught seals and acoustic seals which are used in the assembly.

3.2
smoke-control door and shutter assembly

door and shutter assembly that, when in a closed position, has the function of restricting the passage of

smoke to prescribed limits
3.3
ambient temperature
average air temperature of (20 ± 10) °C
© ISO 2007 – All rights reserved 1
---------------------- Page: 6 ----------------------
ISO 5925-1:2007(E)
3.4
medium temperature
average air temperature of (200 ± 20) °C
3.5
leakage rate

rate of air flow, corrected to standard temperature and pressure conditions, measured under specified

differential pressure across a closed door and shutter assembly
NOTE Leakage rate is expressed in cubic metres per hour.
3.6
differential pressure

difference in static pressure created during the test between the inside and outside of the test chamber, as

measured across a closed door

NOTE The symbol for pressure is p and it is expressed in pascals (1 Pa = 1 N/m ).

3.7
test specimen

door and shutter assembly on which leakage measurements are to be made, including all components

necessary for the use of the door when installed in a building, the seal between the frame and the wall and

any associated construction which is provided
3.8
associated construction
specific form of construction into which the test specimen can be mounted

NOTE If an associated construction is used in the test, it shall be identical to that in which the door and shutter

assembly is designed to be installed in practice. The method of sealing the joint between the test specimen and the

associated construction is specific to that construction and forms part of the construction being evaluated by the test.

3.9
supporting construction

impermeable form of construction of adequate strength and stiffness to support the test specimen when an

associated construction is not provided and to fill the opening in the test chamber when an associated

construction is provided

NOTE The seal between the test assembly and the supporting construction is intended to be impermeable and

withstand the test temperature, but it is not considered as part of the test construction being evaluated.

4 Symbols and abbreviated terms
See Figure 1.

q apparatus (test chamber) leakage rate, expressed in cubic metres per hour, corrected to standard

reference conditions for temperature and pressure (see 10.2)

q total leakage rate, expressed in cubic metres per hour. This is the leakage rate measured in the test

and includes the leakage rate of the test specimen and the test chamber corrected to the standard

reference conditions for temperature and pressure (see 10.2)

q test specimen leakage rate. This is the leakage rate for the test specimen and is calculated as

q = q − q
d t a
2 © ISO 2007 – All rights reserved
---------------------- Page: 7 ----------------------
ISO 5925-1:2007(E)
Key
1 test chamber
2 test frame
3 associated construction
4 test door
5 test door with its frame
6 door frame
7 supporting frame
Subscripts
a apparatus
t total
d door
q = q + q
a a1 a2
q = q + q
t a d
q = q + q
d d1 d2
Figure 1 — Test apparatus
5 Test apparatus

The test apparatus consists essentially of a test chamber with an open front in which the test specimen (door

sample) is mounted to provide a sealed enclosure. The opening shall be sufficient to accommodate the door

sample with its associated and/or supporting construction. In general, an opening of 3 m × 3 m is sufficient.

A smaller apparatus is feasible if its use is restricted to normal single-leaf doors.

An air supply system shall be provided to create a pressure differential across the door sample of at least

55 Pa. Provision shall be made to heat the circulating air to the test temperature of (200 ± 20) °C and to

control the temperature within the prescribed limits. Annex B provides a general specification for a suitable

apparatus, but other designs can achieve the same objectives.

The test apparatus leakage rate, q , shall not exceed 7 m /h at ambient or medium temperature. The air

supply and heating systems shall be able to replace air at ambient temperature and medium temperature to

compensate for leakage rates through the door sample up to 55 m /h.
© ISO 2007 – All rights reserved 3
---------------------- Page: 8 ----------------------
ISO 5925-1:2007(E)
6 Instrumentation
6.1 Differential pressure

A suitable instrument shall be provided to measure the static differential pressure between the inside and

outside of the test chamber. The pressure head shall be mounted in the test chamber at the centre of the test

specimen (100 ± 10) mm from the inside face of the test chamber. The pressure-measuring equipment shall

be capable of measuring differential pressures with an accuracy of 5 Pa or 10 % of the measured value,

whichever is lower. Barometric pressure shall be measured to an accuracy of ±5 %.

6.2 Air temperature

For the medium-temperature test, 12 thermocouples shall be used to monitor and control the temperature

inside the test chamber. The thermocouples shall be arranged in four horizontal rows, with three

thermocouples in each row. The end thermocouples in each row shall be in line with the sides of the door

frame or jamb, and the middle thermocouple in line with the door central axis. The top row shall be 150 mm

below the edge of the free opening and the bottom row 150 mm above the sill level. The other two rows shall

be equidistant between the top and the bottom rows. The hot junctions shall be positioned (100 ± 10) mm from

the door face.

The thermocouple shall be of bare-metal type with a wire diameter of 0,5 mm, or steel-sheathed type with the

overall diameter not exceeding 1,0 mm. The temperature-measuring equipment shall be capable of measuring

temperatures up to 250 °C with an accuracy of ±5 °C.
6.3 Air flow

Suitable instrumentation shall be provided to measure the volume, V , and the temperature, T , of air supplied

t a

to the apparatus to compensate for the total leakage. The apparatus shall be able to measure leakage rates

3 3
up to at least 55 m /h with an accuracy of 1 m /h.
7 Test specimen
7.1 Number

As doors are usually of asymmetrical construction, leakage tests shall be carried out from both sides for full

evaluation. For medium-temperature tests, this will require two separate test specimens (door samples). One

specimen may be sufficient if the door is absolutely symmetrical in design, or in the special case where

information on leakage from only one side is required for limited application. The test report shall clearly

indicate the basis for the use of a single specimen.
7.2 Size

The door and shutter assembly (test specimen) shall be full size, or the largest size that can be

accommodated in the test frame to be mounted on the face of the test apparatus, normally 3 m × 3 m.

7.3 Construction
The door
...

SLOVENSKI STANDARD
SIST ISO 5925-1:2018
01-september-2018
1DGRPHãþD
SIST ISO 5925-1:1999
Požarni preskusi - Dimna vrata z opremo - 1. del: Preskus pri sobni in srednji
temperaturi

Fire tests -- Smoke-control door and shutter assemblies -- Part 1: Ambient- and medium-

temperature leakage tests

Essais au feu -- Assemblages porte et volet pare-fumée -- Partie 1: Essais de fuite à

température ambiante et moyenne
Ta slovenski standard je istoveten z: ISO 5925-1:2007
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
91.060.50 Vrata in okna Doors and windows
SIST ISO 5925-1:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST ISO 5925-1:2018
---------------------- Page: 2 ----------------------
SIST ISO 5925-1:2018
INTERNATIONAL ISO
STANDARD 5925-1
Second edition
2007-09-15
Fire tests — Smoke-control door and
shutter assemblies —
Part 1:
Ambient- and medium-temperature
leakage tests
Essais au feu — Assemblages porte et volet pare-fumée —
Partie 1: Essais de fuite à température ambiante et moyenne
Reference number
ISO 5925-1:2007(E)
ISO 2007
---------------------- Page: 3 ----------------------
SIST ISO 5925-1:2018
ISO 5925-1:2007(E)
PDF disclaimer

This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but

shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In

downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat

accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.

Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation

parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In

the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

COPYRIGHT PROTECTED DOCUMENT
© ISO 2007

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or

ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2007 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO 5925-1:2018
ISO 5925-1:2007(E)
Contents Page

Foreword............................................................................................................................................................ iv

Introduction ........................................................................................................................................................ v

1 Scope ..................................................................................................................................................... 1

2 Normative references ........................................................................................................................... 1

3 Terms and definitions........................................................................................................................... 1

4 Symbols and abbreviated terms ......................................................................................................... 2

5 Test apparatus ...................................................................................................................................... 3

6 Instrumentation..................................................................................................................................... 4

6.1 Differential pressure............................................................................................................................. 4

6.2 Air temperature ..................................................................................................................................... 4

6.3 Air flow................................................................................................................................................... 4

7 Test specimen ....................................................................................................................................... 4

7.1 Number .................................................................................................................................................. 4

7.2 Size......................................................................................................................................................... 4

7.3 Construction.......................................................................................................................................... 4

7.4 Conditioning.......................................................................................................................................... 4

7.5 Pre-test analysis ................................................................................................................................... 5

8 Test procedure ...................................................................................................................................... 5

8.1 Setting-up procedure............................................................................................................................ 5

8.2 Air leakage test ..................................................................................................................................... 5

9 Observations ......................................................................................................................................... 6

10 Expression of results ........................................................................................................................... 6

11 Test report ............................................................................................................................................. 7

12 Field of direct application .................................................................................................................... 8

Annex A (informative) Test principle................................................................................................................ 9

Annex B (normative) Test apparatus ............................................................................................................. 10

Bibliography ..................................................................................................................................................... 11

© ISO 2007 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO 5925-1:2018
ISO 5925-1:2007(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the

International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 5925-1 was prepared by Technical Committee ISO/TC 92, Fire safety, Subcommittee SC 2, Fire

containment.

This second edition cancels and replaces the first edition (ISO 5925-1:1981), which has been technically

revised.

ISO 5925 consists of the following parts, under the general title Fire tests — Smoke-control door and shutter

assemblies:
⎯ Part 1: Ambient- and medium-temperature leakage tests

⎯ Part 2: Commentary on test method and the applicability of test conditions and the use of test data in a

smoke containment strategy
iv © ISO 2007 – All rights reserved
---------------------- Page: 6 ----------------------
SIST ISO 5925-1:2018
ISO 5925-1:2007(E)
Introduction

This part of ISO 5925 has been prepared to provide a test method for determining the smoke leakage through

door and shutter assemblies. It is part of the series of International Standards dealing with fire doors, e.g.

ISO 3008.

This second edition of ISO 5925-1 combines the procedure published in the first edition and the proposed

revisions to it on medium-temperature testing. A further test procedure planned as Part 3 for high-temperature

testing is currently in abeyance. Additional requirements for the installation and use of smoke-control door and

shutter assemblies can be found in other International Standards and national regulations.

© ISO 2007 – All rights reserved v
---------------------- Page: 7 ----------------------
SIST ISO 5925-1:2018
---------------------- Page: 8 ----------------------
SIST ISO 5925-1:2018
INTERNATIONAL STANDARD ISO 5925-1:2007(E)
Fire tests — Smoke-control door and shutter assemblies —
Part 1:
Ambient- and medium-temperature leakage tests
1 Scope

The test described in this part of ISO 5925 determines the rate of leakage of ambient (cold) and medium

(warm) temperature smoke from one side of door and shutter assemblies to the other under the specified test

conditions. The test is applicable to door and shutter assemblies of different configurations intended for

purposes of controlling the passage of smoke in case of fire.

The acceptable leakage rates for different situations are not addressed in this part of ISO 5925, but rather are

specified by the regulations of the controlling authorities.
The principle of the test is explained briefly in Annex A.
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.

ISO 834-1, Fire-resistance tests — Elements of building construction — Part 1: General requirements

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
door and shutter assembly

complete assembly, including any frame or guide, door leaf or leaves, rolling or folding curtain, etc., which is

provided for closing of permanent openings in separating elements

NOTE This includes all side-panels, vision panels or transom panels, grilles and louvers together with door hardware,

and any fire seals, smoke seals, draught seals and acoustic seals which are used in the assembly.

3.2
smoke-control door and shutter assembly

door and shutter assembly that, when in a closed position, has the function of restricting the passage of

smoke to prescribed limits
3.3
ambient temperature
average air temperature of (20 ± 10) °C
© ISO 2007 – All rights reserved 1
---------------------- Page: 9 ----------------------
SIST ISO 5925-1:2018
ISO 5925-1:2007(E)
3.4
medium temperature
average air temperature of (200 ± 20) °C
3.5
leakage rate

rate of air flow, corrected to standard temperature and pressure conditions, measured under specified

differential pressure across a closed door and shutter assembly
NOTE Leakage rate is expressed in cubic metres per hour.
3.6
differential pressure

difference in static pressure created during the test between the inside and outside of the test chamber, as

measured across a closed door

NOTE The symbol for pressure is p and it is expressed in pascals (1 Pa = 1 N/m ).

3.7
test specimen

door and shutter assembly on which leakage measurements are to be made, including all components

necessary for the use of the door when installed in a building, the seal between the frame and the wall and

any associated construction which is provided
3.8
associated construction
specific form of construction into which the test specimen can be mounted

NOTE If an associated construction is used in the test, it shall be identical to that in which the door and shutter

assembly is designed to be installed in practice. The method of sealing the joint between the test specimen and the

associated construction is specific to that construction and forms part of the construction being evaluated by the test.

3.9
supporting construction

impermeable form of construction of adequate strength and stiffness to support the test specimen when an

associated construction is not provided and to fill the opening in the test chamber when an associated

construction is provided

NOTE The seal between the test assembly and the supporting construction is intended to be impermeable and

withstand the test temperature, but it is not considered as part of the test construction being evaluated.

4 Symbols and abbreviated terms
See Figure 1.

q apparatus (test chamber) leakage rate, expressed in cubic metres per hour, corrected to standard

reference conditions for temperature and pressure (see 10.2)

q total leakage rate, expressed in cubic metres per hour. This is the leakage rate measured in the test

and includes the leakage rate of the test specimen and the test chamber corrected to the standard

reference conditions for temperature and pressure (see 10.2)

q test specimen leakage rate. This is the leakage rate for the test specimen and is calculated as

q = q − q
d t a
2 © ISO 2007 – All rights reserved
---------------------- Page: 10 ----------------------
SIST ISO 5925-1:2018
ISO 5925-1:2007(E)
Key
1 test chamber
2 test frame
3 associated construction
4 test door
5 test door with its frame
6 door frame
7 supporting frame
Subscripts
a apparatus
t total
d door
q = q + q
a a1 a2
q = q + q
t a d
q = q + q
d d1 d2
Figure 1 — Test apparatus
5 Test apparatus

The test apparatus consists essentially of a test chamber with an open front in which the test specimen (door

sample) is mounted to provide a sealed enclosure. The opening shall be sufficient to accommodate the door

sample with its associated and/or supporting construction. In general, an opening of 3 m × 3 m is sufficient.

A smaller apparatus is feasible if its use is restricted to normal single-leaf doors.

An air supply system shall be provided to create a pressure differential across the door sample of at least

55 Pa. Provision shall be made to heat the circulating air to the test temperature of (200 ± 20) °C and to

control the temperature within the prescribed limits. Annex B provides a general specification for a suitable

apparatus, but other designs can achieve the same objectives.

The test apparatus leakage rate, q , shall not exceed 7 m /h at ambient or medium temperature. The air

supply and heating systems shall be able to replace air at ambient temperature and medium temperature to

compensate for leakage rates through the door sample up to 55 m /h.
© ISO 2007 – All rights reserved 3
---------------------- Page: 11 ----------------------
SIST ISO 5925-1:2018
ISO 5925-1:2007(E)
6 Instrumentation
6.1 Differential pressure

A suitable instrument shall be provided to measure the static differential pressure between the inside and

outside of the test chamber. The pressure head shall be mounted in the test chamber at the centre of the test

specimen (100 ± 10) mm from the inside face of the test chamber. The pressure-measuring equipment shall

be capable of measuring differential pressures with an accuracy of 5 Pa or 10 % of the measured value,

whichever is lower. Barometric pressure shall be measured to an accuracy of ±5 %.

6.2 Air temperature

For the medium-temperature test, 12 thermocouples shall be used to monitor and control the temperature

inside the test chamber. The thermocouples shall be arranged in four horizontal rows, with three

thermocouples in each row. The end thermocouples in each row shall be in line with the sides of the door

frame or jamb, and the middle thermocouple in line with the door central axis. The top row shall be 150 mm

below the edge of the free opening and the bottom row 150 mm above the sill level. The other two rows shall

be equidistant between the top and the bottom rows. The hot junctions shall be positioned (100 ± 10) mm from

the door face.

The thermocouple shall be of bare-metal type with a wire diameter of 0,5 mm, or steel-sheathed type with the

overall diameter not exceeding 1,0 mm. The temperature-measuring equipment shall be capable of measuring

temperatures up to 250 °C with an accuracy of ±5 °C.
6.3 Air flow

Suitable instrumentation shall be provided to measure the volume, V , and the temperature, T , of air supplied

t a

to the apparatus to compensate for the total leakage. The apparatus shall be able to measure leakage rates

3 3
up to at least 55 m /h with an accuracy of 1 m /h.
7 Test specimen
7.1 Number

As doors are usually of asymmetrical construction, leakage tests shall be carried out from both sides for full

evaluation.
...

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