Reed Mfg H6I Hinged Pipe Cutters, Cast Iron Ductile Iron, 4" 6" Tool_Borescope Up to 10 Year warranty Combustion Check Up to 10 Year warranty with annual recertification: Yes Eligible for UEi Service+: Yes 3 Types of Sensor Protection: Yes NOx Filtered: Yes Low Flow Detection: Yes Over Range Protection Pump: Yes Link to Wireless Probes: Yes Backlight: Yes Temperature Inputs: K Type Temp differential: Yes Wireless output: Yes Protective boot or overmolding: Yes Dual Pressure Input: Yes Differential pressure: Yes Preprogrammed Fuels: 8 Start time: 30 second High altitude compensation: Yes Memory Positions: 45 Magnetic mount: Yes Warranty: 10 Year limited K type input: Yes Digital: Yes Automatic fresh air purge: Yes Number of display parameters: 6 line IR printer link: Yes Protective Water Trap: Yes Capacity Nominal: 3 Tons Refrigerant: R 410A Inlet Connection Size: 3 8” ODF Solder (Chatleff and Aeroquip Adapters Included) Outlet Connection Size: 1 2” ODF Solder (Chatleff and Aeroquip Adapters Included) Internal Check: Yes Maximum Working Pressure: 700 psig Approvals: UL CUL File Number SA5312 (Valves) Parts Diagram and stainless steel to Schedule 100