The Raypak S-R410-EN pool and spa gas heater delivers a powerful output of 399,000 BTU/hr with an impressive 94% thermal efficiency rating. Built with an ASME-certified marine-grade stainless steel heat exchanger, it offers exceptional resistance to corrosion, making it suitable for both saltwater and chemically treated in-ground pools.
Featuring direct spark electronic ignition and a microprocessor-controlled thermostat with onboard diagnostics, this unit delivers consistent and reliable water heating. Its air-fuel ratio combustion system ensures low NOx emissions while the rugged cabinet supports indoor or outdoor installations.
Key Features
| Brand | Raypak |
| Model Number | S-R410-EN |
| Product Type | Condensing Pool & Spa Heater |
| Fuel Type | Natural Gas |
| Thermal Output | 399,000 BTU/hr |
| Efficiency | 94% |
| Heat Exchanger Material | Super-Austenitic Stainless Steel |
| Ignition Type | Direct Spark Electronic Ignition |
| Flow Rate | 151.4 to 473.2 L/min |
| Voltage | 120/24 V |
| Phase | 1-Phase |
| Frequency | 60 Hz |
| Cabinet Dimensions (D x W x H) | 90.2 x 51.3 x 86.7 cm |
| Weight | 136.1 kg |
| Water Connection | 2″ NPT |
| Gas Connection | 3/4″ NPT |
| Flue Diameter | 10.2 cm |
| Certifications | ASME Certified, SCAQMD Rule 1146.2 |
Highlights
- 94% Efficiency
- ASME Code Stainless Steel Marine-Grade Heat Exchanger, stamped for 80 PSIG and National Board registered.
- 75 lb. Pressure relief valve and T&P gauge
- External bypass for high flow rates (up to 125 GPM)
- Indoor/outdoor construction
- 2” PVC Slip inlet/outlet connection
- 115VAC 60Hz 1 Ph Power supply
- Electronic, Intermittent Direct Spark Ignition (DSI)
- Digital display with diagnostics and 7-day time clock
- Air-fuel ratio combustion system provides a modulating response to changing needs
- Condensate Drain port, ½” PVC
- Natural gas or propane
- Low NOx, meets SCAQMD rule 1146.2
- Requires Cat IV Venting: PVC, CPVC, Dura-Vent Polypro, or stainless steel
Materials & care
Constructed with a marine-grade super-austenitic stainless steel heat exchanger and corrosion-resistant cabinet. Regularly inspect the 1/2-inch condensate drain port and ensure proper water chemistry balance to maintain optimal heat exchanger longevity.
Compatibility
Compatible with in-ground swimming pools and spas, including saltwater and chemically treated systems. Requires standard Category IV venting (PVC, CPVC, Dura-Vent Polypro, or stainless steel) and 2-inch PVC plumbing connections.
What’s included
- 1 x Raypak Residential Pool & Spa Natural Gas Heater-S-R410-EP ASME-014280 399K BTUH
Frequently asked questions
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