Raypak 017400 Digital ASME 266A Pool Heater, Natural Gas, Bronze Headers, Cupronickel, 266,000 BTU (B-R266A-EN-X #50)

Raypak 017400 Digital ASME 266A Natural Gas Pool and Spa Heater, 266,000 BTU

Model B-R266A-EN-X #50 ASME | Order # 017400 | Cupronickel heat exchanger, bronze headers | Built for 0 to 2,000 ft elevation

The Raypak Digital ASME 266A is a 266,000 BTU per hour natural gas heater for commercial pools and spas. It pairs the Digital series control and electronic ignition with an ASME-certified, National Board registered heat exchanger: bronze headers, cupronickel fin tubes and a 75 PSI pressure relief valve in the carton. Item 017400 is the natural gas, cupronickel version built for installations from sea level to 2,000 ft.

✅ Made for:

• Use: commercial pools and spas, and other installations where an ASME-certified heater is required.
• Fuel: natural gas only. Raypak lists the propane version as item 017412.
• Elevation: sea level to 2,000 ft (burner orifice #50). Raypak lists item 017404 for 2,000 to 6,000 ft and item 017408 for 6,000 to 9,000 ft.
• Heat exchanger: cupronickel tubes. The same heater with copper tubes is Raypak item 017372.
• Outdoor installation as shipped, using the stackless top packed with the heater. Indoor installation needs Raypak indoor stack kit 009839 and a vent to the outside.
• Pump flow between 25 and 100 GPM. Above 100 GPM Raypak calls for an external bypass valve.
• This is an atmospheric heater, not a Low NOx model. Raypak's Low NOx ASME heaters are the 207A to 407A series.

🔧 Details:

• Raypak item 017400, model B-R266A-EN-X #50 ASME. UPC 840891042174.
• Input rating 266,000 BTU/hr (77.9 kW). Raypak lists the Digital ASME series at 82% thermal efficiency.
• ASME heat exchanger, HLW-stamped and National Board registered, 100 PSIG maximum allowable working pressure. Bronze headers, cupronickel fin tubes, steel tube sheets.
• 75 PSI pressure relief valve included, shipped loose in the accessory carton. The header has a 3/4 in. NPT connection for it.
• ProTek Shield sacrificial assembly with its adapter, packed in the accessory carton for installation at the inlet connection of the bronze header.
• Natural gas supply pressure 6 in. WC minimum, 10.5 in. WC maximum. Gas connection 3/4 in. NPT.
• Electronic intermittent ignition lights the pilot and main burners automatically on a call for heat.
• Digital control with LCD display: pool and spa modes, setpoint adjustable from 50 to 104 degrees F (maximum can be raised to 107), status and diagnostic messages, PIN control lockout. Remote-ready for two-wire or three-wire control systems.
• Unitherm Governor (thermostatic mixing valve) and automatic bypass valve built into the inlet/outlet header.
• Power 120 or 240 VAC, single phase, 60 Hz. Draws 4 A at 120 V or 2 A at 240 V. Factory wired for 240 VAC. Not for 208 VAC.
• Water connections 2 in. slip, with CPVC unions. PVC pipe can be glued directly to the unions.
• Cabinet 23 in. wide, 28 in. deep, 38 in. high; 40 in. to the top of the outdoor stackless top. Flue diameter 7 in.
• Shipping weight about 230 lb with the stackless top (Raypak's documents give 229 to 235 lb).
• In the carton: outdoor stackless (pagoda) top, two 2 in. CPVC union halves with O-rings, plastic finish flange for the gas line, bonding lug, pressure relief valve, ProTek Shield adapter and assembly.
• Raypak limited warranty for ASME pool and spa heaters: one year parts and labor.

📌 Good to know:

• Raypak rates the input for elevations up to 2,000 ft and reduces it 4% for each 1,000 ft above sea level beyond that, so order the version built for your elevation.
• Some jurisdictions require a flow switch on ASME installations. Raypak offers kit 015889F (flange connection) or 015890F (NPT connection) for that.
• On ASME units a high-limit trip is a manual-reset fault, cleared with the MODE button.
• The ProTek Shield is a wear item and is not covered by the warranty. Raypak says to replace it when its weight has dropped to about 40% of the original.
• Salt chlorinators and chemical feeders must be plumbed downstream of the heater. Raypak's water chemistry table allows up to 4,500 ppm salt.
• To move the water connections to the other side on an ASME model, Raypak says to call the factory representative for instructions.
• Gas, venting and electrical work must be done by a qualified installer or service agency. Raypak's warranty applies to heaters installed by a licensed service provider.

Gas, venting and electrical work must be done by a qualified installer and meet local codes.