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BSI 21/30401993 DC:2021 Edition

$13.70

BS EN 15780. Ventilation for buildings. Ductwork. Cleanliness of ventilation systems

Published By Publication Date Number of Pages
BSI 2021 46
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3 Direct vacuum extraction, or dislodging
Anti corrosion product application
Mechanical brushing
Brushing and vacuum to dry
Detergent application- Disinfection product
Brushing
Detergent/solvent if necessary and vaccuuming
Re-assembly
Rinse and dry if wet methods used
If it is not possible to access through
Apply the air conditioning system
Disassembly where necessary
If it is not possible to access through
Vacuum suction of the total oxide dust
Manual brushing
Sealer product application for fibre sealing
Rinse and dry
Brushing and vacuum to dry
5 European foreword
6 1 Scope
2 Normative references
3 Terms and definitions
7 4 Symbols and units
5 Criteria for cleanliness and assessment
5.1 General
8 5.2 Assessment of the need for cleaning
5.3 Design and handing over information
5.4 Determination of cleaning interval
9 5.5 Assessment of the result of cleaning
6 Methodology
6.1 General
11 Figure 1 — Schematic flow chart for procedures to maintain cleanliness of ventilation system
6.2 Assessment of methodology
6.2.1 General
6.2.2 Inspection plan
12 6.2.3 Evaluation methods of dust accumulation
6.3 Cleaning plan
13 6.4 Cleaning methods
7 Evaluation and reporting
7.1 General
7.2 Evaluation of cleaning
7.3 Cleaning report
16 Annex A (informative) Cleanliness quality Air ventilation systems
A.1 General
A.2 Application in general
Table A.1 — Typical applications of cleanliness quality classes
A.3 Assessment frequency recommendation
17 Table A.2 —Inspection intervals according to cleanliness quality class, in months
A.4 Cleanliness class quality measurements
Table A.3. — Acceptable cleanliness levels
18 A.5 Acceptable dust accumulation level (new ductwork)
Table A.4 — Acceptable dust accumulation levels in new ductwork
19 Annex B (informative) Example of cleaning plan for Air ventilation system
B.1.1 General
B.1.2 Cleaning plan
22 Annex C (informative) Air Handling Units – specific guidance
C.1 General
C.2 Recommendations for all cleanliness quality classes
C.2.1 Casing, including accessibility/access doors
C.2.2 Units operating under negative pressure only
The air leakage of the assembled air handling unit shall be tested at 400 Pa negative pressure and it shall not exceed the applicable rate given in Table C.1.
23 Table C.1 — Casing air leakage classes of air handling units, 400 Pa negative test pressure
C.2.2 Filters
C.2.3 Humidifiers
C.2.4 Coils
C.2.5 Sound attenuators
C.2.6 Fan position and cleaning, including fan motors
24 C.2.7 Drainage and prevention of condensation
C.3 Units for advanced cleanliness quality class
C.4 Inspection aspects
25 Annex D (informative) Specific guidance for Filters in Air Handling Units
26 Annex E (informative) Specific guidance for Humidifiers in Air handling units
27 Annex F (informative) Ductwork – Specific installation guidance for Air ventilation system
F.1 Acceptable dust accumulation (new ductwork)
F.2 Protection, Delivery and Installation (PDI)
Table F.1 — Recommendations
Table F.2 — Locations
28 F.2.1 Basic level
F.2.2 Intermediate level
F.2.3 Advanced level
29 F.3 Application of cleanliness levels – airtightness
Table F.3 — Recommended minimum tightness class.
30 Annex G (informative) Terminal devices and units – Specific guidance Air ventilation system
31 Annex H (informative) Measurement methods for dust accumulation – Air ventilation system
H.1 Evaluation methods of dust accumulation
H.1.1 General
Figure H.1 — The reliability level of the results by different evaluation methods for dust
H.1.2 Visual inspection
32 H.1.3 Methods of verifying deposited solid dust and microorganisms
33 H.2 Summary of methods for evaluation of cleanliness
Table H.1 — Summary of the methods used for evaluation of cleanliness of ventilation systems
34 Annex I (informative) European Vacuum test method for measuring Dust Accumulation in Air ventilation systems
I.1 Test equipment
I.2 Sampling procedure
35 I.3 Analysis procedure
36 Annex J (informative) Kitchen Extract Equipment – Specific guidance
J.1 General
37 J.2 Assessment of need for cleaning
Table J.1 – Surface grease deposit limits
J.3 Assessment of Post cleaning result
38 J.4 Cleaning
J.5 Cleaning report
J.5.1 General
39 J.5.2 Photograph records
J.6 Preferred method of verifying grease deposits
J.6.1 Wet Film Thickness Test (WFTT) – Test equipment
J.6.2 Wet Film Thickness Test (WFTT) – Accuracy of measurement
J.6.3 Wet Film Thickness Test (WFTT) – Procedure for the measurement of grease deposit thickness on hard surfaces using a toothed comb
40 J.7 System access
Table J 3 – Location of Access Panels for Cleaning, inspection and testing Purposes
41 J.8 Calculation of cleaning frequency
Table J.4 – Initial Clean Frequency Calculator below can be used to assess cleaning or inspection intervals
42 Table J.5 – Frequency of grease risk control clean vs average daily grease accumulation
43 Annex K (informative) Wiping test method to Evaluate Cleanliness on Site
K.1 General Information
K.2 Test Equipment
K.3 Sampling procedure
44 K.4 Analysis procedure
K.5 Acceptable cleanliness level
Table K.1. — Acceptable cleanliness levels, according to the wiping method
45 Bibliography
BSI 21/30401993 DC
$13.70