The Raypak Digital 406A (P-R406A-EN-C #51, SKU 009223) is a 399,000 BTU natural gas pool and spa heater configured for inground residential pools at elevations between 2,000 and 6,000 feet. Same proven Digital 406A platform as the standard model — factory-orificed for high-altitude combustion so you get clean, efficient operation without field modifications.

Key Features

• 399,000 BTU natural gas — sized for inground pools up to approximately 40,000 gallons
• Factory high-altitude orifice — pre-configured for 2,000–6,000 ft elevation; no field adjustment needed
• Copper fin tube heat exchanger — integral extruded copper construction for efficient, reliable heat transfer
• ProTek Shield — replaceable corrosion-protection module that extends heat exchanger life
• Digital LCD thermostat with on-board diagnostics — live water temp readout and fault codes displayed on the panel
• Remote compatible — connects to most 2-wire and 3-wire pool automation systems

This model is configured for 2,000–6,000 ft elevation only. For sea-level to 2,000 ft installs, order SKU 009219 instead.