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BS EN 17175:2019:2020 Edition

BS EN 17175:2019:2020 Edition

$215.11

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

Published By Publication Date Number of Pages
BSI 2020 166
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This document specifies the requirements and test methods for the construction, safety, classification, marking and efficiency of non-domestic gas-fired overhead radiant strips heaters and multi-burner continuous radiant tube heater 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 strip heaters incorporating a single burner, this standard is applicable to Type B22, B23, 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.

For multi-burner continuous radiant tube heater systems this standard is applicable to type B22, B52, and C52 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.

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

This document is not applicable to:

  1. appliances designed for use in domestic dwelling;

  2. outdoor appliances;

  3. radiant strip heaters where the heat input is in excess of 300 KW (based on the net calorific value of the appropriate reference test gas);

  4. continuous radiant tube heater systems where the heat input of any individual burner unit is in excess of 70 kW (based on the net calorific value of the appropriate reference test gas);

  5. 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:

  6. appliances that are designed for continuous condensation within the flue system under normal operating conditions – except downstream a possible additional exhaust gas heat exchanger.

This document is applicable to appliances which are intended to be type tested.

PDF Catalog

PDF Pages PDF Title
2 undefined
9 1 Scope
2 Normative references
11 3 Terms, definitions and symbols
3.1 System and its constituent parts
14 3.2 Combustion circuit
3.3 Adjusting, control and safety devices
16 3.4 Operation of the appliance
19 3.5 Gases
21 3.6 Conditions of operation and measurement
25 3.7 Energy efficiency
26 3.8 Country of destination
3.9 Symbols
30 4 Classification of appliances
4.1 Classification according gases and categories
31 4.2 Classification according to the mode of evacuation of the combustion products
4.2.1 General
4.2.2 Type B appliance
4.2.3 Type C appliance
32 5 Constructional requirements
5.1 General
5.1.1 Conversion to different gases
5.1.1.1 General
5.1.1.2 Category I
33 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
5.1.5 Soundness of the gas and combustion circuit
5.1.5.1 Soundness of the gas circuit
5.1.5.2 Soundness of the combustion circuit
5.1.5.3 Soundness of the combustion circuit (Type B appliances)
35 5.1.5.4 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
5.1.6.2 Air supply and combustion products evacuation ducts
36 5.1.6.3 Air inlets
5.1.6.4 Appliance flue outlet
5.1.6.5 Type B22 and Type B23 appliances
5.1.6.6 Type B52 and B53 appliances
37 5.1.6.7 Combustion circuit
5.1.7 Gas Inlet connections
38 5.1.8 State of operation
5.1.9 Electrical safety
5.1.10 Operational safety in the event of fluctuation, interruption and restoration of the auxiliary energy
39 5.1.11 Motors and fans
5.2 Requirements for adjusting, control and safety devices
5.2.1 General
5.2.2 Gas rate adjusters
5.2.3 Range-rating devices
5.2.4 Primary aeration adjuster
5.2.5 Manual controls
5.2.5.1 Application
40 5.2.5.2 Manual valves
5.2.6 Air/gas ratio control for multiple-burner continuous radiant tube heater system
5.2.7 Regulators
5.2.8 Multifunctional controls
5.2.9 Automatic shut-off valves
41 5.2.10 Gas strainers
5.2.11 Thermostats
5.2.12 Air proving devices
5.2.12.1 General
42 5.2.12.2 Burner units
5.2.12.3 Common duct
5.2.13 Automatic system control
5.2.13.1 System operating sequence
43 5.2.13.2 Automatic burner control system
45 5.2.13.3 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 Temperature controls
5.5.1 General requirements
5.5.2 Temperature limiter
5.5.3 Overheat thermal cut-out
47 5.5.4 Temperature limiter / Overheat thermal cut-out
5.6 Pressure test points
5.6.1 Gas pressure test point
5.6.2 Air pressure test point
5.7 Injectors
5.8 Exhaust gas heat exchanger
6 Operational requirements
6.1 Test methods
6.1.1 Characteristics of test gases (Reference and limit gases)
48 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
6.1.3.2 Conditions of supply and adjustment of the burner unit
49 6.1.4 Test pressures
51 6.1.5 Test procedures
6.1.5.1 Tests requiring the use of reference gas
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 burner units
6.1.6.7 Two-stage, multi-stage and modulating appliances
6.2 Safety of operation
6.2.1 Soundness
6.2.1.1 Soundness of the gas circuit
53 6.2.1.2 Soundness of the combustion circuit and correct evacuation of combustion products
54 6.2.2 Heat inputs
6.2.2.1 General
56 6.2.2.2 Nominal heat input
6.2.2.3 Start gas heat input
6.2.2.4 Effectiveness of the range-rating device
57 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
60 6.2.3.4 POCED
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
66 6.2.4.4 Supplementary tests
70 6.2.5 Pressure regulator
6.2.6 Air-gas ratio controls
6.2.6.1 Leakage of non-metallic control tubes
6.2.6.2 Supervision of the combustion air rate or the combustion products rate
71 6.2.6.3 Gas/air pressure ratio adjustment
6.2.7 Combustion
6.2.7.1 General
73 6.2.7.2 All appliances (still air conditions)
74 6.2.7.3 Supplementary tests under special conditions
76 6.2.8 Air proving device in the common duct
6.3 Oxides of Nitrogen, NOx
6.3.1 General
77 6.3.2 Weighting
6.3.2.1 General
78 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
79 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
7 Energy Efficiency
7.1 General principle of measurement and calculation radiant factor
80 7.1.1 Simplification for multi-burner continuous radiant tube heaters
81 7.2 Working space
7.3 Test equipment to determine radiant output
7.3.1 Installation
7.3.2 Mechanical equipment and radiometer positioning / measuring grid
82 7.3.3 Radiometer equipment and calibration
7.3.3.1 General
83 7.3.3.2 Radiometer settings
84 7.3.3.3 Signal acquisition
85 7.4 Test procedure
7.4.1 Adjustments
7.4.2 Measurement procedure
86 7.5 Calculation of radiant factor
7.5.1 Calculation of heat input
87 7.5.2 Calculation of radiant output
7.5.2.1 General
88 7.5.2.2 Treatment of negative radiometer readings
7.5.2.3 Correction of measured radiant output for radiant absorption by H2O and CO2
89 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)
7.6 Determination of thermal efficiency
7.6.1 General test conditions
90 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
91 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
92 8.2.2 Seasonal space heating efficiency calculation
8.2.2.1 General
93 8.2.2.2 Correction factor F(1)
94 8.2.2.3 Correction factor F(4)
8.2.2.4 Correction factor F(5)
95 9 Risk assessment
10 Marking and instructions
10.1 Marking of the appliance and the packaging
10.1.1 Designation
10.1.2 Data plate
96 10.1.3 Other marking
97 10.1.4 Marking on the packaging
10.1.5 Utilization of symbols on the appliance or 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
98 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
101 10.2.2.2 Instructions for use and maintenance
102 10.2.2.3 Conversion instructions
10.2.2.4 Instructions for the installation of fittings
10.3 Presentation
10.4 Information Requirements
103 Annex A (informative)National situations
A.1 General
A.1.1 Categories
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
105 A.3 Flue connections in the various countries
106 Annex B (informative)Types of appliances
B.1 Single burner overhead radiant strip heaters
B.1.1 Type B appliances with a fan in the combustion circuit
108 B.1.2 Type C appliances with a fan in the combustion circuit
111 B.2 Multiple burner overhead continuous radiant tube heater systems – Type B22 or B52 appliances with a fan in the combustion circuit
112 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
113 C.3 Conversion to categories within a wider Wobbe Index range
114 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)
115 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
116 D.8 Quantity of carbon dioxide in the flue gas
117 Annex E (informative)Identification of the types of gas in use in various countries
119 Annex F (normative)Special national conditions
120 Annex G (normative)Calculation of conversions of NOx
G.1 NOx emission conversion factors
121 G.2 NOx Conversion — Calculation
123 Annex H (informative)National situations of countries whose national bodies are CEN associate members
124 Annex I (informative)Different types of heat input control
125 Annex J (informative)Radiometer design
J.1 Principle radiometer design features
126 J.2 Radiometer technical design
J.3 Pyro-electric detector
J.4 Ulbricht Sphere
J.4.1 General
127 J.4.2 Dimensions of the Ulbricht sphere
J.4.3 Surface of the Ulbricht sphere
128 J.4.4 Angular responsivity test of the Ulbricht sphere
129 Annex K (informative) Radiometer calibration
K.1 Radiometer calibration
K.2 Black body calibration equipment and procedure
K.2.1 General
130 K.2.2 Temperature calibration at reference condition
131 K.2.3 Temperature calibration at higher temperatures
132 K.2.4 Calibration calculation
133 K.3 Calibration procedure in detail, presented as a worked example
K.3.1 Calibration Measurements
K.3.2 Selecting the average readings
134 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
138 Annex L (normative) Correction of measured radiant output for absorption by H2O and CO2
L.1 General
140 L.2 Calculation method
141 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
142 M.2 Measurement results
M.2.1 Test information
M.2.2 Test ambient conditions
M.2.3 Gas/heat input data
143 M.2.4 Flue gas data
M.2.5 Absorption of water vapour and CO2 data
M.2.6 Irradiation measurement data
144 Annex N (informative) Worked example
N.1 General information
N.2 Radiometer technical data
N.3 Measuring plane technical data
145 N.4 Measurement results
N.4.1 Test information
N.4.2 Test ambient conditions
N.4.3 Gas/heat input data
146 N.4.4 Flue gas data
N.4.5 Absorption of water vapour and CO2 data
N.4.6 Irradiation measurement data
147 Annex O (normative)Flue test probes
152 Annex P (normative) Product information required
154 Annex Q (informative)Derivation of equations to determine thermal efficiency
156 Annex R (normative)Flue gas heat exchanger
R.1 General
R.2 Materials
R.3 Corrosion resistance
157 R.4 Thermal insulation
R.5 Gas tightness
R.6 Removal of condensate
R.7 Non-metallic flue system
158 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
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
159 R.12.2.2 Determination of thermal energy gain by secondary heat transfer medium
R.12.2.3 Determination of thermal energy of the products of combustion
R.12.3 Minimum requirements
160 Annex S (normative)Uncertainty of measurements
162 Annex ZA (informative)Relationship between this European Standard and the ecodesign requirements of Commission Regulation (EU) No 2015/1188 aimed to be covered

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BS EN 17175:2019
$215.11