{"product_id":"pentair-mastertemp-natural-gas-heater-400k-btu-ec-462028-parts-diagram","title":"Pentair MasterTemp Natural Gas Heater 400K BTU EC-462028 Parts \u0026 Diagram","description":"\u003cp\u003eReplacement parts and exploded parts diagram for the Pentair MasterTemp Natural Gas Heater 400K BTU (model EC-462028). Find the part on the diagram, then look for the same number (#) next to each part in the Available Parts list and add the parts you need to your cart.\u003c\/p\u003e\u003cp\u003eParts marked Alternate are compatible replacements from other manufacturers.\u003c\/p\u003e\u003ch3\u003eOther Parts on This Diagram\u003c\/h3\u003e\u003cp\u003eThese parts are not listed for online purchase. Contact us with the diagram number and part number to order.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e#1\u003c\/strong\u003e – 77707-0232 – Cupro Nickel Tube Sheet Coil Assembly Kit Mastertemp Heater Water System \u003cem\u003e(Water System Parts - For Heaters Manufactured after 1\/12\/09 (New Tub Design) )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#1\u003c\/strong\u003e – 474058 – Tube Sheet Coil Assembly Kit Cupro Nickel, for MT 175NA-200LP \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#1\u003c\/strong\u003e – 460747 – Tube Sheet Coil Assembly Kit for  250NA, 250LP Mastertemp Heater Water System \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#1\u003c\/strong\u003e – 474059 – Tube Sheet Coil Assembly Kit for  250NA, 250LP Mastertemp Heater \u003cem\u003e(Water System Parts- For Heaters Manufactured after 1\/12\/09 (New Tub Design) )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#1\u003c\/strong\u003e – 474060 – Tube Sheet Coil Assembly Kit, Cupro Nickel for  300NA, 300LP Mastertemp Heater \u003cem\u003e(Water System Parts- For Heaters Manufactured after 1\/12\/09 (New Tub Design) )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#1\u003c\/strong\u003e – 77707-0234 – Cupro Nickel Tube Sheet Coil Assembly Kit Mastertemp Heater Water System \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#1\u003c\/strong\u003e – 77707-0244 – Cupro Nickel Tube Sheet Coil Assembly Kit MT HD Series Heater Water System \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#1\u003c\/strong\u003e – 473710 – Tube Sheet Coil Assembly Kit for Mastertemp Heater Water System \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#1\u003c\/strong\u003e – 42002-0035Z – Heater Display Cover for MasterTemp, Mastertemp 125 Heater \u003cem\u003e(Electrical System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#2\u003c\/strong\u003e – 77707-0014 – Manifold Kit for Mastertemp Heater Water System \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#2\u003c\/strong\u003e – 460748 – Water System Manifold Replacement Kit Natural Gas and Propane Pool\/Spa Heater \u003cem\u003e(Water System Parts- For Heaters Manufactured after 1\/12\/09 (New Tub Design) )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#2\u003c\/strong\u003e – 77707-0015 – Manifold Kit for Mastertemp Heater Water System \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#2\u003c\/strong\u003e – 38404-4097S – 3\/4'' Union Burner System for Mastertemp Heater \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#2\u003c\/strong\u003e – 42001-0030S – Igniter Bracket for Mastertemp 125, Sta-Rite Max-E-Therm Heater \u003cem\u003e(Electrical System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#3\u003c\/strong\u003e – 77707-0117 – Coil\/Tubesheet Sealing O-Ring Kit for Mastertemp Heater Water System \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#3\u003c\/strong\u003e – 460749 – Coil\/Tubesheet Sealing O-Ring Kit for Mastertemp Heater Burner System \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#3\u003c\/strong\u003e – 77707-0118 – Coil\/Tubesheet Sealing O-Ring Kit for  Mastertemp Heater Water System \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#5\u003c\/strong\u003e – 77707-0251 – Air Blower Kit for 200 Natural Gas Max-E-Therm Burner System \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#5\u003c\/strong\u003e – 77707-0254 – Air Blower Kit for 200 Propane Max-E-Therm Burner System \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#5\u003c\/strong\u003e – 42002-0025S – 140 Degree Taped Automatic Gas Shut-Off Switch for Heater Electrical System \u003cem\u003e(Electrical System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#5\u003c\/strong\u003e – 42002-0025T – Automatic Gas Shut-Off Switch \u003cem\u003e(Electrical System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#7\u003c\/strong\u003e – 460798 – Air Orifice Kit for Mastertemp 175 Heater Burner System \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#7\u003c\/strong\u003e – 77707-0111 – Air Orifice Kit for 200 Max-E-Therm Heater \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#7\u003c\/strong\u003e – 460745 – Air Orifice Kit for 250 BTU Heater \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#7\u003c\/strong\u003e – 460759 – Air Orifice Kit for 300 BTU Heater \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#8\u003c\/strong\u003e – 42001-0056S – Terminal Board for Max-E-Therm and Mastertemp Heater Electrical System \u003cem\u003e(Electrical System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#10\u003c\/strong\u003e – 42001-0052S – Ignition Control Module for Max-E-Therm and Mastertemp Heater Electrical System \u003cem\u003e(Electrical System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#12\u003c\/strong\u003e – 42001-0061S – Air Flow Switch for Max-E-Therm and Mastertemp Heater Electrical System \u003cem\u003e(Electrical System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#14\u003c\/strong\u003e – 77707-0017 – Connector Tube Kit for Max-E-Therm, Mastertemp Heater Water System \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#14\u003c\/strong\u003e – 42002-0034Z – Heater Top for Mastertemp Heater Burner and Electrical System \u003cem\u003e(Electrical System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#15\u003c\/strong\u003e – 42001-0200S – Heater Combustion Chamber Assembly \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#15\u003c\/strong\u003e – 474095 – Metal 1-Piece Chamber\/Combustion Chamber Assembly \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#18\u003c\/strong\u003e – U9-152 – Oring \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#20\u003c\/strong\u003e – U178-920P – Drain Plug Assembly With O-Ring .25\" MPT \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#20\u003c\/strong\u003e – 25010-0200 – PLD and PTM Air Release Valve Assembly \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#20\u003c\/strong\u003e – 072555 – #2-112 Nitrile O-Ring Cover\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#20\u003c\/strong\u003e – 474094 – Metal 1-Piece Elbow\/Combustion Chamber Cover Assembly \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#21\u003c\/strong\u003e – U78-60ZPS – 3\/4'' Zinc Plated Square Head Pipe Plug for Mastertemp Pool and Spa Heater \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#21\u003c\/strong\u003e – 42002-0005S – Metal Vent Cover for Max-E-Therm and Mastertemp Heater Burner System \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#23\u003c\/strong\u003e – 42002-0039Z – Side Service Panel for Mastertemp Heater \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#24\u003c\/strong\u003e – 42002-0033Z – Manifold Side Panel for Mastertemp Heater \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 77707-0120 – Manifold O-Ring Kit for Max-E-Therm and Mastertemp Heater Burner System \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 460940 – 6 Tube Pressure Vessel Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 474096 – Heat Exchanger Kit and Pressure Vessel Heaters \u003cem\u003e(Water System Parts - For ASME Heaters Manufactured after 03\/24\/09)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 474097 – Heat Exchanger Kit for Mastertemp and Max-E-Therm 250 \u003cem\u003e(Water System Parts - For ASME Heaters Manufactured after 03\/24\/09)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 460924 – Thermal Regulator Kit for Max-E-Therm and Mastertemp Heater Water System \u003cem\u003e(Water System Parts )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 77707-0431 – Gas Orifice Kit for 200 Natural Gas Heater \u003cem\u003e(Burner System - Not included with heater. Order separately. )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 77707-0411 – Gas Orifice Kit for 400 Natural Gas Heater \u003cem\u003e(Burner System - Not included with heater. Order separately. )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 460797 – Orifice Kit for Mastertemp 175 Liquid Propane Heaters \u003cem\u003e(Burner System - Not included with heater. Order separately. )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 77707-0461 – Gas Orifice Kit for 200 Propane Heater \u003cem\u003e(Burner System - Not included with heater. Order separately. )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 77707-0441 – Gas Orifice Kit for 400 Propane Heater \u003cem\u003e(Burner System - Not included with heater. Order separately. )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 460794 – Natural Gas to Propane Conversion Kit for Mastertemp 175 Pool and Spa Heater \u003cem\u003e(Burner System - Not included with heater. Order separately. )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 77707-1461 – Natural Gas to Propane Conversion Kit for 200 Max-E-Therm Heater Burner System \u003cem\u003e(Burner System - Not included with heater. Order separately. )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 460795 – LPG to Natural Gas Conversion Kit for 175 Mastertemp Heater \u003cem\u003e(Burner System - Not included with heater. Order separately. )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 77707-1431 – Propane to Natural Gas Conversion Kit for 200 Max-E-Therm Heater Burner System \u003cem\u003e(Burner System - Not included with heater. Order separately. )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 460742 – Propane to Natural Gas Conversion Kit for 250 Mastertemp Heater Burner System \u003cem\u003e(Burner System - Not included with heater. Order separately. )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 77707-0011 – Blower\/Adapter Plate Gasket Kit for Max-E-Therm and MT Heater Burner System \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 77707-0202 – Flameholder Kit for 200 Maxitherm and Mastertemp Heater Burner System \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 77707-0203 – Flameholder Kit for 333 Maxitherm and Mastertemp Heater Burner System \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 77707-0204 – Flameholder Kit for 400 Maxitherm and Mastertemp Heater Burner System \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 77707-0008 – Insulation Kit for Max-E-Therm and Mastertemp Heater Burner System \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 42001-0074S – Lower Enclosure Insulation Service Kit for MT Heater \u003cem\u003e(Burner System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 42001-0104S – Heater Wiring Harness for Max-E-Therm Heater Electrical System 115\/230 V \u003cem\u003e(Electrical System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Shown\u003c\/strong\u003e – 42001-0105S – Voltage Selector Plug Kit for Max-E-Therm Heater Electrical System 120\/240 V \u003cem\u003e(Electrical System )\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePlease confirm your model number matches your existing equipment before ordering.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":52557057589464,"sku":"DIAGRAM-EC-462028","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/3389\/9224\/files\/PUR-15-2012-sch.jpg?v=1790369855","url":"https:\/\/poolsupply4less.com\/products\/pentair-mastertemp-natural-gas-heater-400k-btu-ec-462028-parts-diagram","provider":"Pool Supply 4 Less","version":"1.0","type":"link"}