Raypak digital heaters have an electronic ignition, a digital thermostat and Polymer headers. They are gas powered and suitable for use with swimming pools and spas. These heaters are designed for residential application and combine durability and smart design to be some of the best on the market. Their attributes include exceeding federal and state fuel efficiency standards, high flow rates, condensation protection and wind-resistant design to withstand the elements for years to come. Built to withstand various weather conditions, perfect solution for environments requiring efficiency, convenience and versatility. Intermittent spark ignition pilot safety controls. Pilot only comes on when there is a call for heat. Space-age material means the heater won’t retain residual heat after it is turned off, allowing it to be installed without the use of costly metal heat sinks. Part Number: 009216 | Model Number: P-R206A-EN-C High efficiency, Small footprint FREE SHIPPING!!!! Due to the sheer size of the item, FREE ECONOMY SHIPPING TO THE LOWER 48 STATES ONLY. NOWHERE ELSE. NO EXCEPTIONS. The Raypak Natural Gas 206,000 BTU Digital Pool & Spa Heater is a quality heater at an affordable price. With many standard features, the Raypak Digital is the latest in a long line of widely used industry heaters. Features: Integral Fin Copper Exchanger Tube Corrosion-Free Polymer Headers Backlit LCD Controls Self-Diagnostic Microprocessor Controlled Ignition Temperature and Flow Control of Exchanger to minimize condensation Stainless Steel Burners Non-Combustible Base (Rated for Combustible Surface Installation) Textured Powder Coat Finish Convertible 120/240 Volts Specifications: Height with Optional Indoor Stack hood: 61-5/8″ Flue Diameter: 6″ Gas Pipe Connection Size: 3/4″ Water Connection Size: 2″ 82% Thermal Efficiency Specifications: Height with Optional Indoor Stack hood: 61-5/8″ Flue Diameter: 6″ Gas Pipe Connection Size: 3/4″ Water Connection Size: 2″ 82% Thermal Efficiency Features: Integral Fin Copper Exchanger Tube Corrosion-Free Polymer Headers Backlit LCD Controls Self-Diagnostic Microprocessor Controlled Ignition Temperature and Flow Control of Exchanger to minimize condensation Stainless Steel Burners Non-Combustible Base (Rated for Combustible Surface Installation) Textured Powder Coat Finish Convertible 120/240 Volts