BS EN 416:2019

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Gas-fired overhead radiant tube heaters and radiant tube heater systems for non-domestic use. Safety and energy efficiency

Published By	Publication Date	Number of Pages
BSI	2019	170

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Categories: 97.100.20 - Gas heaters, BSI

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Description

This document specifies the requirements and test methods for the construction, safety, classification, marking and efficiency of non-domestic gas-fired overhead radiant tube heaters incorporating a single burner and multiple burner systems (referred to in the body of the text as the “system”) with each burner unit under the control of an automatic burner control system.

For radiant tube heaters incorporating a single burner, this standard is applicable to Type A2, A3, B12, B13, B22, B23, B42, B43, B52, B53, C12, C13, C32, C33, C52 and C53 appliances intended for use in other than domestic dwellings, in which the supply of combustion air and/or the evacuation of the products of combustion is achieved by mechanical means located upstream of the draught diverter, if provided.

For radiant tube heater systems incorporating multiple tube heater segments, this document is applicable to Type B52, B52x, B53 and B53x systems intended for use in other than domestic dwellings, in which the supply of combustion air and/or the evacuation of the products of combustion is achieved by mechanical means.

This document also includes appliances incorporating a secondary heat exchanger in the flue system.

This document is not applicable to:

appliances designed for use in domestic dwelling;
outdoor appliances;
appliances where the heat input of any individual burner unit is in excess of 120 kW (based on the net calorific value of the appropriate reference test gas);
appliances having combustion products evacuation ducts that are non-metallic in the flue system – except ducts downstream of a possible additional condensing exhaust gas heat exchanger.

In addition, for heater systems incorporating multiple tube heaters this standard is not applicable to:
appliances and systems that are designed for continuous condensation within the flue system under normal operating conditions – except downstream a possible additional exhaust gas heat exchanger.

This standard is applicable to systems which are intended to be type tested.

PDF Catalog

PDF Pages	PDF Title
2	undefined
9	1 Scope
10	2 Normative references
11	3 Terms and definitions
12	3.1 System and its constituent parts
14	3.2 Combustion circuit
15	3.3 Adjusting, control and safety devices
17	3.4 Operation of the appliance
20	3.5 Gases
21	3.6 Conditions of operation and measurement
24	3.7 Energy efficiency
25	3.8 Country of destination
26	3.9 Symbols
30	4 Classification of appliances 4.1 Classification according gases and categories 4.2 Classification according to the mode of evacuation of the combustion products 4.2.1 General 4.2.2 Type A appliance
31	4.2.3 Type B appliance
33	5 Constructional requirements 5.1 General 5.1.1 Conversion to different gases 5.1.1.1 General 5.1.1.2 Category I 5.1.1.3 Category II and III 5.1.2 Materials and method of construction
34	5.1.3 Accessibility for maintenance and use 5.1.4 Flexible gas connection
35	5.1.5 Soundness of the gas and combustion circuits 5.1.5.1 Soundness of the gas circuit 5.1.5.2 Soundness of the combustion circuit (Type B appliances) 5.1.5.3 Soundness of the combustion circuit (Type C appliances) 5.1.6 Supply of combustion air and evacuation of combustion products 5.1.6.1 General
36	5.1.6.2 Air supply and combustion products evacuation ducts 5.1.6.3 Air inlets 5.1.6.4 Flue outlet 5.1.6.5 Type B12 and Type B13 appliances 5.1.6.6 Type B22 and Type B23 appliances
37	5.1.6.7 Type B42 and Type B43 appliances 5.1.6.8 Type B52 and Type B53 appliances 5.1.7 Gas inlet connections
38	5.1.8 State of operation 5.1.9 Electrical safety
39	5.1.10 Operational safety in the event of fluctuation, interruption and restoration of the auxiliary energy 5.1.11 Motors and fans 5.2 Requirements for adjusting, controls and safety devices 5.2.1 General 5.2.2 Gas rate adjusters
40	5.2.3 Range-rating devices 5.2.4 Primary aeration adjuster 5.2.5 Manual controls 5.2.5.1 Application 5.2.5.2 Manual valves 5.2.6 Regulators
41	5.2.7 Multifunctional controls 5.2.8 Automatic shut-off valves 5.2.9 Gas strainers
42	5.2.10 Thermostats 5.2.11 Air proving device 5.2.11.1 General 5.2.11.2 Burner units 5.2.11.3 Common duct 5.2.12 Automatic system control 5.2.12.1 System operating sequence
43	5.2.12.2 Automatic burner control system
45	5.2.12.3 Air / gas ratio controls
46	5.3 Ignition devices 5.3.1 General 5.3.2 Ignition device for the main burner 5.4 Main burners 5.5 Pressure test points 5.5.1 Gas pressure test-point
47	5.5.2 Air pressure test-point 5.6 Injectors 5.7 Exhaust gas heat exchanger 6 Operational requirements 6.1 Test methods 6.1.1 Characteristics of test gases (Reference and limit gases) 6.1.2 Conditions for preparation of the test gases 6.1.3 Practical application of test gases 6.1.3.1 Choice of test gases
48	6.1.3.2 Conditions of supply and adjustment of the burner unit
49	6.1.4 Test pressures
50	6.1.5 Test procedures 6.1.5.1 Tests requiring the use of reference gas
51	6.1.5.2 Tests requiring the use of limit gases 6.1.6 General test conditions 6.1.6.1 Test room 6.1.6.2 Evacuation of the products of combustion
52	6.1.6.3 Test installation 6.1.6.4 Influence of thermostats 6.1.6.5 Electrical supply 6.1.6.6 Range rated appliances 6.1.6.7 Two-stage, multi-stage and modulating appliances
53	6.2 Safety of operation 6.2.1 Soundness 6.2.1.1 Soundness of the gas circuit 6.2.1.2 Soundness of the combustion circuit and correct evacuation of combustion products
55	6.2.2 Heat input 6.2.2.1 General
56	6.2.2.2 Nominal heat input 6.2.2.3 Start gas heat input
57	6.2.2.4 Effectiveness of the range-rating device 6.2.3 Limiting temperatures 6.2.3.1 Wall and ceiling temperatures
59	6.2.3.2 Component temperatures 6.2.3.3 Fan motor temperatures
61	6.2.4 Ignition, cross-lighting and flame stability 6.2.4.1 Ignition and cross-lighting
64	6.2.4.2 Safety time 6.2.4.3 Flame stability
65	6.2.4.4 Supplementary tests
69	6.2.5 Pressure regulator 6.2.6 Air-gas ratio controls 6.2.6.1 Leakage of non-metallic control tubes
70	6.2.6.2 Supervision of the combustion air rate or the combustion products rate 6.2.6.3 Gas/air pressure ratio adjustment
71	6.2.7 Combustion 6.2.7.1 General
72	6.2.7.2 All appliances (still air conditions)
73	6.2.7.3 Supplementary tests under special conditions
75	6.2.8 Air proving device in the common duct
76	6.3 Oxides of Nitrogen, NOx 6.3.1 General
77	6.3.2 Weighting 6.3.2.1 General 6.3.2.2 Single-stage appliances 6.3.2.3 Two-stage, multi-stage and modulating appliances 6.3.3 Declaration of values of oxides of nitrogen, NOx
78	6.4 Determination of electrical power consumption 6.4.1 General 6.4.2 Auxiliary energy at nominal load 6.4.3 Auxiliary energy at minimum load 6.4.4 Auxiliary energy at stand-by
79	7 Energy Efficiency 7.1 General principle of measurement and calculation radiant factor 7.2 Working space 7.3 Test equipment to determine radiant output 7.3.1 Installation
80	7.3.2 Mechanical equipment and radiometer positioning / measuring grid 7.3.3 Radiometer equipment and calibration 7.3.3.1 General
81	7.3.3.2 Radiometer settings
83	7.3.3.3 Signal acquisition 7.4 Test procedure 7.4.1 Adjustments 7.4.2 Measurement procedure
85	7.5 Calculation of radiant factor 7.5.1 Calculation of heat input 7.5.2 Calculation of radiant output 7.5.2.1 General
86	7.5.2.2 Treatment of negative radiometer readings
87	7.5.2.3 Correction of measured radiant output for radiant absorption by H2O and CO2 7.5.3 Calculation of radiant factor 7.5.3.1 General 7.5.3.2 Radiant factor at nominal heat input (RFnom) 7.5.3.3 Radiant factor at minimum heat input (RFmin)
88	7.6 Determination of thermal efficiency 7.6.1 General test conditions 7.6.2 Test procedure 7.6.3 Accuracy of measurement 7.6.4 Additional test for two-stage, multi-stage and modulating appliances 7.6.5 Calculation of thermal efficiency
89	7.7 Test report 7.7.1 General 7.7.2 Worked example of test report 8 Requirements of energy efficiency (rational use of energy) 8.1 General 8.2 Seasonal energy efficiency 8.2.1 General
90	8.2.2 Seasonal space heating efficiency calculation 8.2.2.1 General
92	8.2.2.2 Correction factor F(1) 8.2.2.3 Correction factor F(4)
93	8.2.2.4 Correction factor F(5) 9 Risk assessment 10 Marking and instructions 10.1 Marking of the appliance and the packaging 10.1.1 Designation
94	10.1.2 Data plate
95	10.1.3 Other marking 10.1.4 Marking on the packaging containing the burner
96	10.1.5 Utilization of symbols on the system and packaging 10.1.5.1 Electrical supply 10.1.5.2 Type of gas 10.1.5.3 Gas supply pressure 10.1.5.4 Category 10.1.5.5 Other information 10.2 Instructions 10.2.1 General 10.2.2 Technical instructions 10.2.2.1 Technical instructions for installation and adjustment
99	10.2.2.2 Instructions for use and maintenance
101	10.2.2.3 Conversion instructions 10.2.2.4 Instructions for the installation of fittings 10.3 Presentation 10.4 Information Requirements
102	Annex A (informative)National situations A.1 General A.1.1 General A.1.2 Gas rate adjusters, aeration adjusters and regulators A.1.3 Conversion to different gases A.2 Gas connections in the various countries
104	A.3 Flue connections in the various countries
105	Annex B (informative)Typical Systems B.1 Single burner systems B.1.1 Type B appliances with a fan in the combustion circuit
109	B.1.2 Type C appliances with a fan in the combustion circuit
111	B.2 Multi tube heater systems B.2.1 Type D System
113	B.2.2 Type E System
114	B.2.3 Type F systems
115	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
116	C.3 Conversion to categories within a wider Wobbe Index range
117	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 (λ)
118	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
119	D.7 Dry quantity of flue gas D.8 Quantity of carbon dioxide in the flue gas
121	Annex E (informative)Identification of the types of gas in use in various countries
123	Annex F (normative)Special national conditions
124	Annex G (normative)Calculation of conversions of NOx G.1 NOx emission conversion factors (NCV)
125	G.2 NOx Conversion — Calculation
127	Annex H (informative)National situations of countries whose national bodies are CEN associate members
128	Annex I (informative)Different types of heat input control
129	Annex J (informative)Radiometer design J.1 Principle radiometer design features
130	J.2 Radiometer technical design J.3 Pyro-electric detector J.4 Ulbricht Sphere
133	Annex K (informative)Radiometer calibration K.1 Radiometer calibration K.2 Black body calibration equipment and procedure K.2.1 General
135	K.2.2 Temperature calibration at reference condition
136	K.2.3 Temperature calibration at higher temperatures
137	K.2.4 Calibration calculation
138	K.3 Calibration procedure in detail, presented as a worked example K.3.1 Calibration Measurements K.3.2 Selecting the average readings
139	K.3.3 Determination of the 1/S sensitivity per temperature K.3.4 Determining the 1/S sensitivity of the radiometer K.3.5 Documentation of calibration results
143	Annex L (normative)Correction of measured radiant output for absorption by H2O and CO2 L.1 General
145	L.2 Calculation method
146	Annex M (informative)Radiant heat output data – Recording of results M.1 General information to be recorded M.1.1 Test and appliance data M.1.2 Radiometer technical data M.1.3 Measuring plane technical data
147	M.2 Measurement results M.2.1 Test information M.2.2 Test ambient conditions M.2.3 Gas/heat input data
148	M.2.4 Flue gas data M.2.5 Absorption of water vapour and CO2 data M.2.6 Irradiation measurement data
149	Annex N (informative)Worked example N.1 General information N.2 Radiometer technical data N.3 Measuring plane technical data
150	N.4 Measurement results N.4.1 Test information N.4.2 Test ambient conditions N.4.3 Gas/heat input data
151	N.4.4 Flue gas data N.4.5 Absorption of water vapour and CO2 data N.4.6 Irradiation measurement data
152	Annex O (normative)Flue test probes
157	Annex P (normative)Product information required
159	Annex Q (informative)Derivation of equations to determine thermal efficiency
161	Annex R (normative)Flue gas heat exchanger R.1 General R.2 Materials R.3 Corrosion resistance
162	R.4 Thermal insulation
163	R.5 Gas tightness R.6 Removal of condensate R.7 Non-metallic flue system R.8 Frost protection R.9 Distance to flammable materials R.10 Safety-related equipment R.11 Operation over-pressure when using water as secondary medium
164	R.12 Calculation of the heat transfer performance R.12.1 Test requirements R.12.2 Heat transfer calculations R.12.2.1 Heat transfer efficiency R.12.2.2 Determination of thermal energy gain by secondary heat transfer medium
165	R.12.2.3 Determination of remaining thermal power in the flue gas R.12.3 Minimum requirements
166	Annex S (normative)Uncertainty of measurements
168	Annex ZA (informative)Relationship between this European Standard and the ecodesign requirements of Commission Regulation (EU) No 2015/1188 aimed to be covered

Additional information

Status	Definitive
Pages	170
Publication Date	2019-11-07
ISBN	978 0 580 99374 9
Standard Number	BS EN 416:2019
Title	Gas-fired overhead radiant tube heaters and radiant tube heater systems for non-domestic use. Safety and energy efficiency
Identical National Standard Of	EN 416
Replaces	BS EN 777-1:2009, BS EN 416-1:2009, BS EN 777-3:2009, BS EN 777-2:2009, BS EN 416-2:2006
Descriptors	3rd family gases, Safety measures, Safety devices, Ignition, Commercial, Fire tests, Fire safety, Flames, Combustion products, Testing conditions, Classification systems, Identification methods, Formulae (mathematics), Heating equipment, Flues, Performance testing, Temperature rise, Maintenance, Gaseous fuels, Instructions for use, Heaters, 2nd family gases, Design, Stability, Gas valves, Time, Pilot flames, Thermal testing, Flued heaters, Flow rates, Safety valves, Overhead, Electrical safety, Gas-powered devices, Wear tests, Test pressure, Gases, Protective coatings, Conversion, Control devices, Leak tests, Radiant heaters, Gas space heating, Burners, Marking, Ignition systems (heat engineering), Installation, Single
Publisher	BSI
Committee	GSE/20
ICS Codes	97.100.20 - Gas heaters

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