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RAYPAK MILLIVOLT 406A 009203 PROPANE POOL & SPA HEATER – 406K BTU, POLYMER HEADERS, COPPER HEAT EXCHANGER
Model: P-R406A-MP-C #57
Heating Capacity: 399,000 BTU
Fuel Type: Propane (LP)
Heat Exchanger: All-Copper Integral Fin Tube
Header Material: Polymer Resin with Stainless Steel Tube Sheets
Ignition Type: Millivolt Standing Pilot (Self-Generating)
Elevation Rating: 0–2,000 Feet
The Raypak 009203 P-R406A-MP-C Millivolt Propane Pool & Spa Heater is a proven, mechanically simple heater built for owners and installers who prefer a reliable millivolt system over digital electronics. Delivering a 399,000 BTU input through an all-copper integral fin tube heat exchanger, this heater uses a self-generating millivolt ignition system that requires no external electrical power to operate — a major advantage for remote installations or backup heating applications. Rated for elevations up to 2,000 feet, it is well suited to large residential and light commercial pools.
Built with a polyester powder-coated, non-corrosive galvanized steel cabinet and a wind-resistant pagoda-top design, this heater is engineered to hold up in outdoor equipment pads. Corrosion-resistant polymer resin headers with stainless steel tube sheets add long-term durability, and an automatic bypass built into the header simplifies plumbing while maintaining proper flow balance.
A mechanical thermostat provides straightforward, no-frills temperature control, while the Unitherm Governor helps protect the heat exchanger from condensation-related wear. Stainless steel burners and a ceramic fiber combustion box round out a heater built for dependable, low-maintenance operation season after season.
Key Features
- Self-generating millivolt ignition — no external electricity required
- 399,000 BTU all-copper integral fin tube heat exchanger
- Polymer resin headers with stainless steel tube sheets
- Mechanical thermostat for simple, reliable temperature control
- Wind-resistant pagoda-top cabinet design
- Automatic bypass built into the header for balanced flow
- Unitherm Governor condensation protection
- Stainless steel burners and ceramic fiber combustion box
- Up to 125 GPM water flow capacity
- Non-corrosive, polyester powder-coated galvanized cabinet
- Ideal for remote installations or backup heating without reliable power
Specifications
| Specification | Details |
|---|---|
| Brand | Raypak |
| Model | P-R406A-MP-C #57 |
| Part Number / SKU | 009203 |
| Fuel Type | Propane (LP) |
| BTU Input | 399,000 BTU |
| Heat Exchanger | All-Copper Integral Fin Tube |
| Header Material | Polymer Resin, Stainless Steel Tube Sheets |
| Ignition | Millivolt Standing Pilot (Self-Generating) |
| Controls | Mechanical Thermostat |
| Elevation Rating | 0–2,000 Feet |
| Electrical Requirement | None Required (Self-Powered Millivolt System) |
| Water Connections | 2" Slip-Fit CPVC (Up to 125 GPM) |
| Weight | 247 lbs |
| Warranty | 2 Years Parts & Labor (Residential Single-Family) |
What's Included
- Raypak P-R406A-MP-C millivolt propane pool & spa heater
- Owner's manual and installation guide
- Manufacturer's limited warranty registration
For pool owners and installers who value mechanical simplicity and dependable, power-independent operation, the P-R406A-MP-C millivolt heater is a trusted, time-tested choice backed by decades of Raypak engineering.
Learn more at https://www.raypak.com/products/pool-and-spa/residential-pool-and-spa-heaters/
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