BS ISO 23551-6:2014

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Test conditions
6 Construction
7 Performance
8 EMC/electrical requirements
9 Marking, installation, and operating instructions
Annex A (informative) - Leak-tightness test - Volumetric
        method
Annex B (informative) - Leak-tightness test - Pressure-loss
        method
Annex C (normative) - Conversion of pressure loss into
        leakage rate
Annex D (normative) - Test for immunity to power-frequency
        magnetic fields
Annex E (normative) - Specific regional requirements
        in European countries
Annex F (normative) - Specific regional requirements
        in Canada and USA
Annex G (normative) - Specific regional requirements
Annex H (informative) - Types of flame supervision controls

Defines safety, constructional, and performance requirements for thermoelectric flame supervision controls, energized by a thermocouple, intended for use with gas burners and gas-burning appliances, hereafter referred to as 'controls'.

This part of ISO23551 specifies safety, constructional, and performance requirements for thermoelectric flame supervision controls, energized by a thermocouple, intended for use with gas burners and gas-burning appliances, hereafter referred to as “controls”. This part of ISO23551 applies to thermoelectric flame supervision controls for gas burners and gas-burning appliances of nominal connection size up to, and including DN50, that can be used and tested independently of these appliances. These thermoelectric flame supervision controls are suitable for fuel gases, such as natural gas, manufactured gas, or liquefied petroleum gas (LPG) at inlet pressures up to and including 50kPa. This International Standard covers type testing only. This International Standard is not applicable to the thermocouple and controls which use auxiliary energy (e.g. electrical energy supplied externally).