Schedule 3 BOILERS AND APPLIANCES TO WHICH THESE REGULATIONS DO NOT APPLY Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below: sch 3 am by Boiler (Efficiency) 2006 reg 2 IDESCRIPTION OF BOILERS ETC. IIINTERPRETATION OF SCHEDULE 3 ← Schedule 2 Schedule 3 Paragraph 1 →