scope:

Defines, for the purpose of type examination, the construction, the safety characteristics, the test methods and the marking of mobile and portable non-domestic forced convection direct fired air heaters with a rated heat input not exceeding 180 kW (H_S) and burning 3rd family gases, referred to in the body of the text as 'appliances'. Covers the following type of mobile and portable non domestic forced convection direct fired aire heaters of type A₃ fitted with an integral burner intended for use in other than residential dwellings: a) low gas pressure appliances operating at pressures up to and including 50 mbar burning commercial butane and/or commercial propane; b) medium gas pressure appliances operating at pressures above 50 mbar and up to 4,0 bar burning commercial butane and/or commercial propane.