R4750B220,R4750B208山武控制器R4750B220,R4750B208山武azbil程控器R4750B/C系列烧嘴控制器：R4750B108-2、R4750B220-2R4750B208-2、R4750C1007、R4750C1015、R4750C1023、R4750C1031、R4750C1049、R4750C1056。（R4750B/C烧嘴控制器是确保燃烧量580kW/h以下的燃油或燃气燃烧装置按照正确顺序进行自动操作的带故障保全功能的燃烧安全控制器）)