Specification for installation of gas-fired forced convection air heaters for commercial and industrial space heating (2nd and 3rd family gases) Ingestion-build-53008 and metallic paint films are

and metallic paint films are outside the scope of this part of ISO 7724

numbering systems

terms relating only to electron beam welding

Electronic cigarettes

Contents of BS ISO 29990 include

Specification for installation of gas-fired forced convection air heaters for commercial and industrial space heating (2nd and 3rd family gases) Ingestion-build-53008 and metallic paint films are1 Scope This British Standard specifies the installation requirements for direct and indirect gas fired forced convection air heaters for space heating that are designed for commercial or industrial applications and to which The Gas Appliances (Safety) Regulations 1995 [1] apply. This British Standard applies to the installation and maintenance of appliances that are designed to utilize gases of Group H of the 2nd family (e. g. natural gas), gases of