Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
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017977F | Raypak ASME 406A/407A Copper Tube Bundle Heat Exchanger
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CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
The Raypak 017977F Copper Tube Bundle is a factory OEM heat exchanger kit for 406A and 407A Raypak heaters (models with polymer headers), intended for residential ASME units. It includes a full set of copper tubes, gaskets, hardware, and internal baffles required for a complete replacement. This bundle restores heat transfer efficiency, proper water routing, and sealing integrity—especially if your original tube bundle is aged, scaled, or compromised. Designed to integrate seamlessly, it helps bring your heater back to full performance.
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Complete OEM Copper Tube Assembly: Comes with all tubes, gaskets, bolts, and baffles required for a full swap, eliminating the need to source additional parts.
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Specifically Built for 406A & 407A Polymer-Header Units: Designed for Raypak models that use polymer headers, ensuring correct alignment and fit for residential ASME use.
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Restores Heat Transfer & Efficiency: New copper surfaces and clean internal flow paths enhance thermal exchange, reduce heat loss, and return your heater to ideal operating conditions.
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Durable Against Corrosion & Thermal Stress: Constructed to resist corrosion, scaling, and repeated heating-cooling cycles—helping prevent premature failure and extend longevity.
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Drop-In Replacement, Simplified Installation: Built to fit within original firebox constraints and mounting points, minimizing service time and easing installation for technicians.
- Raypak ASME Heater Models: 406A and 407A