Raypak Digital Cupro-Nickel Heater P-R406A-EN-X

Get fast, reliable heat built for tough water. Raypak’s cupro-nickel heat exchanger resists corrosion and scaling better than standard copper—ideal for heavy use, variable water balance, or salt systems. The digital control panel makes day-to-day operation simple: set your temperature, lock settings, and view clear status/diagnostics at a glance. With Raypak’s stable combustion design and robust headers, this heater delivers quick heat-up and steady hold in real outdoor conditions (wind, rain, cool mornings) so your pool or spa stays ready when you are.

Engineered for straightforward service, the cabinet provides clean access to internals, while self-protection features help safeguard against low flow and overheating. It’s a great match for residential and light-commercial pads that need high-output performance with long service life.

Key highlights

• Cupro-nickel heat exchanger for enhanced durability in challenging water (salt/chlorinated)

• Digital controls with precise setpoint, lockout, and easy diagnostics

• Fast recovery / steady temperature for pools and attached spas

• Wind-resistant combustion design for real-world outdoor installs

• Service-friendly layout with straightforward component access

• Compatible with common automation/thermostat control (relay call-for-heat)

Install notes

• Model suffix EN is natural gas (verify fuel type and local code).

• Place on a level, non-combustible pad with required clearances and ventilation.

• Plumb after the filter (and before/after salt cell per manufacturer guidance); maintain proper flow.

• Add a check valve if installing downstream of a chlorinator or tablet feeder.

• Bond/ground and connect to a properly sized gas line; have a licensed pro handle gas, venting (if enclosed), and startup.

Install Notes:

• • Place on a level, non-combustible pad with required clearances and ventilation.

  • Plumb after the filter (and before/after salt cell per manufacturer guidance); maintain proper flow.

  • Add a check valve if installing downstream of a chlorinator or tablet feeder.

  • Bond/ground and connect to a properly sized gas line; have a licensed pro handle gas, venting (if enclosed), and startup.

    Get fast, reliable heat built for tough water. Raypak’s cupro-nickel heat exchanger resists corrosion and scaling better than standard copper—ideal for heavy use, variable water balance, or salt systems. The digital control panel makes day-to-day operation simple: set your temperature, lock settings, and view clear status/diagnostics at a glance. With Raypak’s stable combustion design and robust headers, this heater delivers quick heat-up and steady hold in real outdoor conditions (wind, rain, cool mornings) so your pool or spa stays ready when you are.

    Engineered for straightforward service, the cabinet provides clean access to internals, while self-protection features help safeguard against low flow and overheating. It’s a great match for residential and light-commercial pads that need high-output performance with long service life.

    Key highlights

    • Cupro-nickel heat exchanger for enhanced durability in challenging water (salt/chlorinated)

    • Digital controls with precise setpoint, lockout, and easy diagnostics

    • Fast recovery / steady temperature for pools and attached spas

    • Wind-resistant combustion design for real-world outdoor installs

    • Service-friendly layout with straightforward component access

    • Compatible with common automation/thermostat control (relay call-for-heat)

     

  
  

  The sleek and stylish Raypak Digital Natural Gas Heater features innovative technology designed to keep your pool or spa at the perfect temperature for your enjoyment. With a copper heat exchanger you can expect more heat transferred into your pool's water for less of the price. Flexible installation allows the Raypak Heater to be an addition to new or existing pool or spa systems.

  Raypak Pool Heater Cutting Edge Features

  Raypak's brilliant low-profile design, mixed with a corrosion resistant cabinet made from galvanized metal allows you to enjoy your heater year-round. The Raypak Digital Natural Gas Pool Heater is built tough with the ProTek Shield feature that protects the heat exchanger from outside forces and extends the life of the entire heater itself. The Raypak Heater comes with an easily removable stainless steel burner tray to help trap heat in and speed up ignition time. The Raypak Natural Gas Heater is fitted with copper finned-tubing and stainless-steel tube sheets helping to ensure rust-free operation which is important around pools and spas.

  Pool & Spa Heating Made Easy

  The Raypak Natural Gas Heater simplifies everything so you don't have to. The heater comes with a built-in electronic ignition, enabling the unit to turn the pilot light off and on when needed, conserving gas usage, and saving users money. Troubleshooting a Raypak Pool Heater is easier than ever with the on-board digital diagnostic controls. The display lets the owner and service professional know exactly what's always going on with the heater. The Raypak Natural Gas 399,000 BTU Heater comes with an intelligent digital display control system and a microprocessor-controlled thermostat to get the perfect temperature for your pool or spa every time. The heater also is compatible to be remote controlled from any two or three wired remote for added convenience. The soft operating gas valve ensures smooth turn on giving you no "Hard-light" to worry about.

  The Raypak Digital Natural Gas Heater is engineered to last while offering simplicity and durability, ensuring optimal heating for your pool and spa.

  Have a salt water chlorinated pool? Raypak has other heater models available, featuring a corrosion-resistant Cupro-Nickel heat exchanger. Raypak also offers an ASME rated pool and spa heater for commercial applications with bronze headers to meet commercial code requirements.

  Specs: