BS-5990 Complete Document History
Specification for direct gas-fired forced convection air heaters with rated heat inputs greater than 330 kW but not exceeding 2 MW for industrial and commercial space heating. Safety and performance requirements (excluding electrical requirements) (2nd family gases)

Complete Current Edition:
   2006 EDITION - GREATER THAN 330 KW BUT NOT EXCEEDING 2 MW FOR INDUSTRIAL and - July 20, 2006

Obsolete Revision Information:
   AMD 6649 - AMENDMENT 1 - Oct. 1, 1990
   1990 EDITION - SPECIFICATION FOR DIRECT GAS-F - Jan. 1, 1990