Induced Draft Blower Application Boilers Water Heaters For Fuel Type LP Natural Gas Oil For Appliance Type Boilers Furnaces Unit Heaters Water Heaters Maximum Vent Pipe Diameter 6 in Minimum Vent Pipe Diameter 4 in Maximum Heater BTU Input for Gas Appliance 300 000 BtuH Maximum Heater BTU Input for Oil Appliance 200 000 BtuH Inlet Diameter 4 in Outlet Diameter 4 in Nameplate Voltage 115V AC Current 1.26 A Maximum Motor Speed 3 000 RPM Maximum Static Pressure 1 3/8 in wc