Safety and control devices for gas burners and gas-burning appliances. Particular requirements - Multifunctional controls Ingestion-build-63114 To convey air or combustible

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Safety and control devices for gas burners and gas-burning appliances. Particular requirements - Multifunctional controls Ingestion-build-63114 To convey air or combustible1 Scope This part of ISO 23551 specifies the safety, construction and performance requirements for multifunctional controls intended for use with gas burners, gas appliances and similar use, hereafter referred to as MFC. This part of ISO 23551 is applicable to MFC with declared maximum inlet pressures up to, and including, 50 kPa (500 mbar) of nominal connection sizes up to, and including, DN 150 for use with one or more fuel gases. MFC consist of two