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Sta-Rite Max-E-Therm SR200NA, SR333NA & SR400NA Heater Replacement Parts Diagram

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56 parts · 15 with cheaper aftermarket options. Tap a number on the diagram, or search by part number.

– exploded view with numbered parts

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Clamp-lid combustion chamber (2009-2013) Show older parts
Older parts

    • Not sold online Pentair 3/4 in. gas union (2 needed) 38404-4097SCall us and we'll get it for you.
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          • Not sold online Pentair enclosure kit, upper right-hand 77707-0002Call us and we'll get it for you.
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          • Not sold online Pentair one-piece metal chamber / combustion chamber assembly, clamp lid (heaters made 1/12/2009 to 10/31/2013) 474095Call us and we'll get it for you.
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          • Not sold online Pentair lower enclosure 42001-0001SCall us and we'll get it for you.
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          • Not sold online Pentair enclosure kit, upper left-hand, natural gas, Max-E-Therm 200 — 200K BTU: 77707-3200N; 333K BTU: 77707-3333N; 400K BTU: 77707-3400N 77707-3200N / 77707-3333N / 77707-3400NCall us and we'll get it for you.
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          • Not sold online Pentair combustion chamber O-ring kit, clamp lid (heaters made 1/12/2009 to 10/31/2013) 474201Call us and we'll get it for you.
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          • Not sold online Pentair combustion chamber O-ring kit, 9-bolt lid (heaters made after 11/16/2013) 474432Call us and we'll get it for you.
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          • Not sold online Pentair one-piece metal elbow / combustion chamber cover assembly, clamp lid (heaters made 1/12/2009 to 10/31/2013) 474094Call us and we'll get it for you.
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          • Not sold online Pentair metal vent cover 42002-0005SCall us and we'll get it for you.
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          • Not sold online Pentair thermal regulator cap O-ring 35505-1313Call us and we'll get it for you.
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          • Not sold online Pentair 3/4 in. pipe plug U78-60ZPSCall us and we'll get it for you.
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          • Not sold online Pentair pressure relief valve kit (recommended, sold separately) 473715ZCall us and we'll get it for you.
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          • Not sold online Pentair display cover retainer cap kit (cap and CPSC warning label) 77707-0009Call us and we'll get it for you.
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          • Not sold online Pentair igniter bracket 42001-0030SCall us and we'll get it for you.
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          • Not sold online Pentair igniter gasket 42001-0066SCall us and we'll get it for you.
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          • Not sold online Pentair junction box cover kit 77707-0022Call us and we'll get it for you.
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        Also fits your Sta-Rite Max-E-Therm SR200NA, SR333NA & SR400NA Heater

        Not shown on the diagram, but made for this pump.

        Fit guide

        Which Max-E-Therm part fits your SR200NA?

        Check the model number on the heater rating plate. Part numbers come from Pentair's Max-E-Therm replacement parts lists. The diagram is split into burner (B), water (W) and electrical (E) systems.

        Heat exchanger (tube sheet coil kit) by heater size

        Size parts for the Max-E-Therm 200

        Manifold kit
        77707-0014
        Coil sealing O-ring kit (6 O-rings)
        77707-0117
        Air blower kit natural / propane
        77707-0251 / 77707-0254
        Gas orifice kit natural / propane
        77707-0431 / 77707-0461
        Air orifice kit
        77707-0111
        Flameholder kit
        77707-0202

        Combustion chamber: which lid design?

        9-bolt lid (made after 11/16/2013)

        Chamber assembly 474957, elbow / chamber cover 474958, chamber O-ring kit 474432. Shown on the main diagram.

        Clamp lid (made 1/12/2009 to 10/31/2013)

        Chamber assembly 474095, elbow / chamber cover 474094, chamber O-ring kit 474201. Shown in the small "clamp lid" drawing. Kits also include an O-ring and silicone tube.

        Electrical notes

        Control board kit NA, LP series
        42002-0007S
        Transformer 115/230V
        42001-0107S
        Transformer 120/240V single adapter, single-voltage harness heaters before 2004
        42001-0057S
        Thermal regulator
        38000-0007S