... large size4.1*2*2.85.1*2.5*3.25.5*2.5*3.8Auxiliary standardInduced draft fanY6-41-11NO.4.5C 5.5 KWY6-41 ... .5GC-5*7 7.5KW1.5GC-5*7 7.5KW1.5GC-5*7 7.5KWchimney350*18350*18450*18boiler anxiliary main:Burner, feed pump, blower ... , water treatment equipment, exhauster, draught fan ,air blower,feed water pump, valve instrument, crusher, chimney, electric cabinet, multi-cyclone and so ...