BS EN 777-1:2009
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Multi-burner gas-fired overhead radiant tube heater systems for non-domestic use System D. Safety
Hardcopy , PDF
06-11-2019
English
30-04-2009
Foreword
1 Scope
2 Normative references
3 Terms and definitions
3.1 System and its constituent parts
3.2 Adjusting, control and safety devices
3.3 System operation
3.4 Gases
3.5 Conditions of operation and measurement
3.6 Country of destination
4 Classification of systems
4.1 Classification according to the nature
of the gases used (categories)
4.2 Classification according to the gases
capable of being used
4.3 Classification according to the mode of evacuation
of the combustion products
5 Constructional requirements
5.1 General
5.2 Requirements for adjusting, control
and safety devices
5.3 Ignition devices
5.4 Main burners
5.5 Pressure test points
5.6 Injectors
6 Operational requirements
6.1 Soundness
6.2 Heat inputs
6.3 Limiting temperatures
6.4 Ignition, cross-lighting and flame stability
6.5 Pressure regulator
6.6 Combustion
6.7 Prolonged performance
6.8 Measurement of oxides of Nitrogen, NO[X]
7 Test methods
7.1 General
7.2 Construction and design
7.3 Safety of operation
7.4 Other pollutants
8 Marking and instructions
8.1 Marking of the system and the packaging
8.2 Instructions
8.3 Presentation
9 Evaluation of conformity of POCEDs and their
associated terminals
9.1 General
9.2 Type testing
9.3 Factory production control (FPC)
Annex A (informative) - National situations
A.1 General
A.2 Categories listed in the body of the
standard and marketed in different
countries
A.3 Appliance supply pressures corresponding
to the categories given in A.2
A.4 Special categories marketed nationally
or locally
A.5 Test gases corresponding to the special
categories given in A.4
A.6 Gas connections in the various countries
A.7 Flue connections in the various countries
Annex B (informative) - System D
B.1 Type D systems
Annex C (informative) - Equivalence rules
C.1 Conversion to categories within a restricted
Wobbe Index range
C.2 Conversion to categories within an identical
Wobbe Index range
C.3 Conversion to categories within a wider
Wobbe Index range
Annex D (informative) - Calculation of the mass
flow rate of flue gases
D.1 Flue gas mass flow rate
D.2 Quantity of air in the flue gas
D.3 Flue gas excess air ratio (lambda)
D.4 Quantity of water vapour in the flue gas
D.5 Quantity of Nitrogen in the flue gas
D.6 Quantity of Oxygen in the flue gas
D.7 Dry quantity of flue gas
D.8 Quantity of carbon dioxide in the flue gas
Annex E (informative) - Identification of gas types
in use in various countries
Annex F (normative) - Special national conditions
F.1 General
Annex G (informative) - Calculation example of the
weighting factors for a system with
several rates
G.1 Appliance rates
G.2 Weighting of Q[pi],% = 20
G.3 Weighting of Q[pi],% = 40
G.4 Weighting of Q[pi],% = 60
G.5 Weighting of Q[pi],% = 70
G.6 Total weighting
Annex H (informative) - Calculation of conversions
of NO[X]
H.1 NO[X] emission conversion factors
H.2 NO[X] Conversion - Calculation
Annex I (informative) - National situations of countries
whose national bodies are CEN associate
members
Annex J (informative) - An example of sampling plans
J.1 Sampling plans
J.2 Inspection levels and procedures
Annex K (informative) - Flue determination
K.1 General conditions of test
K.2 Test conditions
K.3 Test procedure
K.4 Accuracy of measurement
K.5 Calculation of Flue Loss
Annex ZA (informative) - Clauses of this European
Standard addressing essential requirements
or other provisions of EU Directives
Annex ZB (informative) - Clauses of this European
Standard addressing the provisions of the
EU Construction Products Directive
ZB.1 Scope and relevant characteristics
ZB.2 Procedure(s) for attestation of conformity
of [construction products]
ZB.3 CE marking and labelling
Bibliography
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