This Standard specifies requirements for new mobile industrial direct fired air heaters, constructed entirely from new materials and components and intended for use with liquefied petroleum gas (LP Gas) with gas consumption greater than 50 MJ/h and not exceeding 500 MJ/h.

NOTE: For direct fired air heaters up to and including 50 MJ/h, refer to AS 4553.

Figures for this Standard are set out in Appendix A. Methods of test are set out in Appendix B.