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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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On the Hayward Universal HC Series 275k BTU HDF275 diagram
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Other parts on the same Hayward Universal HC Series 275k BTU HDF275
The OEM Hayward Inlet Outlet Header Kit, model HDXFIOH001, is specifically designed for HDF heaters, ensuring optimal water flow and heater performance. This kit includes all necessary components to facilitate efficient water inlet and outlet operations, enhancing heat exchange and system efficiency. Constructed with high-quality materials for durability and reliability, it is resistant to corrosion and harsh pool environments. The HDXFIOH001 kit is essential for maintaining the integrity and functionality of your HDF heater, making it ideal for both installations and replacements.
- Optimized Water Flow: Specifically designed for HDF heaters to ensure optimal water flow and enhanced heater performance.
- Complete Kit Components: Includes all necessary components to facilitate efficient water inlet and outlet operations, boosting heat exchange and system efficiency.
- High-Quality and Durable: Constructed with high-quality materials that ensure durability and reliability, even in harsh pool environments.
- Corrosion Resistant: Resistant to corrosion, making it suitable for long-term use in challenging conditions.
- Ideal for Maintenance and Replacement: Essential for maintaining the integrity and functionality of your HDF heater, perfect for both installations and replacements.
- Compatible with Hayward HC-Series HDF400 Heaters

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