{"product_id":"017707-raypak-337a-digital-low-nox-asme-pool-heater","title":"017707 | Raypak 337A Digital Low NOx ASME Pool Heater","description":"\u003ch2 data-end=\"353\" data-start=\"298\"\u003e\u003cstrong\u003eRaypak 337A Digital Low NOx ASME Pool \u0026amp; Spa Heater\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0922\/3326\/9536\/files\/017705_Raypak_207A_Digital_Low_NOx_ASME_Pool_Heater_Banners_1.jpg?v=1760373851%3E%3C\/p%3E%3Cdiv%20style=\" alt=\"Product Photo\" style=\"width: 1300px; height: 600;\"\u003e\u003c\/p\u003e\n\u003cp data-end=\"857\" data-start=\"355\"\u003eThe Raypak 337A Digital Low NOx ASME Gas Pool \u0026amp; Spa Heater delivers reliable power for larger residential pools, spas, and commercial facilities that require dependable heating with long-term durability. With an input rate of 332 MBTU\/h and 82% thermal efficiency, this model strikes the balance between high performance and energy-conscious operation. Built to ASME standards, it meets demanding commercial codes while offering the flexibility and ease of installation that pool professionals trust.\u003c\/p\u003e\n\u003cp data-end=\"1298\" data-start=\"859\"\u003eEngineered with Raypak’s signature durability, the 337A includes a galvanized metal cabinet, straight-tube copper or cupronickel heat exchanger, and bronze ASME headers that ensure extended life even under tough operating conditions. The integrated \u003cstrong data-end=\"1132\" data-start=\"1108\"\u003eProTek Shield module\u003c\/strong\u003e adds extra protection by absorbing corrosive elements common in saltwater and chlorinated pools, preserving the exchanger and reducing long-term maintenance costs.\u003c\/p\u003e\n\u003cp data-end=\"1776\" data-start=\"1300\"\u003eDesigned for convenience, the 337A features intelligent digital controls with a microprocessor-based thermostat, making temperature adjustments straightforward. The unit’s self-adjusting burner system ensures a clean, consistent burn regardless of gas pressure changes, while its low-profile design provides versatility for both indoor and outdoor installations. Built for performance and resilience, the 337A is a proven solution for pool and spa heating on a larger scale.\u003c\/p\u003e\n\u003ch2 data-end=\"1843\" data-start=\"1783\"\u003e\u003cstrong\u003eKey Features of the Raypak 337A ASME Low NOx Gas Heater\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-end=\"3653\" data-start=\"1845\"\u003e\n\u003cli data-end=\"1999\" data-start=\"1845\"\u003e\n\u003cp data-end=\"1999\" data-start=\"1847\"\u003e\u003cstrong data-end=\"1875\" data-start=\"1847\"\u003eInput Rate – 332 MBTU\/h:\u003c\/strong\u003e Provides robust heating output designed for larger residential pools and spas, as well as light commercial installations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2141\" data-start=\"2000\"\u003e\n\u003cp data-end=\"2141\" data-start=\"2002\"\u003e\u003cstrong data-end=\"2029\" data-start=\"2002\"\u003e82% Thermal Efficiency:\u003c\/strong\u003e Offers consistent heating performance with energy-conscious operation, helping lower long-term fuel expenses.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2272\" data-start=\"2142\"\u003e\n\u003cp data-end=\"2272\" data-start=\"2144\"\u003e\u003cstrong data-end=\"2170\" data-start=\"2144\"\u003eASME-Certified Design:\u003c\/strong\u003e Bronze headers and premium-grade components meet strict commercial safety and durability standards.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2437\" data-start=\"2273\"\u003e\n\u003cp data-end=\"2437\" data-start=\"2275\"\u003e\u003cstrong data-end=\"2297\" data-start=\"2275\"\u003eLow NOx Certified:\u003c\/strong\u003e Equipped with a blower and gas valve system that maintains a clean, stable burn in compliance with environmental air-quality regulations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2604\" data-start=\"2438\"\u003e\n\u003cp data-end=\"2604\" data-start=\"2440\"\u003e\u003cstrong data-end=\"2484\" data-start=\"2440\"\u003eCopper or Cupronickel Exchanger Options:\u003c\/strong\u003e Straight-tube exchanger design reduces wear while supporting both standard and high-chloride pool water applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2779\" data-start=\"2605\"\u003e\n\u003cp data-end=\"2779\" data-start=\"2607\"\u003e\u003cstrong data-end=\"2632\" data-start=\"2607\"\u003eProTek Shield Module:\u003c\/strong\u003e An additional protective insert that absorbs corrosive elements, extending the lifespan of the heat exchanger in saltwater or chlorinated pools.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2922\" data-start=\"2780\"\u003e\n\u003cp data-end=\"2922\" data-start=\"2782\"\u003e\u003cstrong data-end=\"2808\" data-start=\"2782\"\u003eSelf-Adjusting Burner:\u003c\/strong\u003e Automatically balances combustion to account for gas pressure changes, ensuring safe and efficient performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3069\" data-start=\"2923\"\u003e\n\u003cp data-end=\"3069\" data-start=\"2925\"\u003e\u003cstrong data-end=\"2946\" data-start=\"2925\"\u003eDigital Controls:\u003c\/strong\u003e Features a microprocessor thermostat and intuitive interface, with integration capability for remote automation systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3211\" data-start=\"3070\"\u003e\n\u003cp data-end=\"3211\" data-start=\"3072\"\u003e\u003cstrong data-end=\"3103\" data-start=\"3072\"\u003eDurable Galvanized Cabinet:\u003c\/strong\u003e Built with a rugged weather-resistant housing designed to perform year-round in harsh outdoor conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3368\" data-start=\"3212\"\u003e\n\u003cp data-end=\"3368\" data-start=\"3214\"\u003e\u003cstrong data-end=\"3248\" data-start=\"3214\"\u003eFlexible Installation Layouts:\u003c\/strong\u003e Compact and low-profile design allows for both indoor and outdoor setups, making it adaptable to varied applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3512\" data-start=\"3369\"\u003e\n\u003cp data-end=\"3512\" data-start=\"3371\"\u003e\u003cstrong data-end=\"3403\" data-start=\"3371\"\u003e120\/240VAC, 1-Phase Voltage:\u003c\/strong\u003e Works with standard electrical configurations, simplifying installation for contractors and service teams.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3653\" data-start=\"3513\"\u003e\n\u003cp data-end=\"3653\" data-start=\"3515\"\u003e\u003cstrong data-end=\"3548\" data-start=\"3515\"\u003eMaximum Water Flow – 100 GPM:\u003c\/strong\u003e Maintains strong circulation to support larger volume systems without sacrificing heating consistency.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg style=\"width: 1300px; height: 600;\" alt=\"Product Photo\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0922\/3326\/9536\/files\/017705_Raypak_207A_Digital_Low_NOx_ASME_Pool_Heater_Banners_2.jpg?v=1760373851\"\u003e\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;\"\u003e\n\u003ch2 style=\"text-align: left;\"\u003e\n\u003cstrong\u003eDigital Low NOx ASME 207A Specifications\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c!-- PRODUCT SPECS INLINE UNDER TITLE --\u003e\n\u003cdiv class=\"product-specs-row\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e 337A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Rate:\u003c\/strong\u003e 332 MBTU\/h\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Efficiency:\u003c\/strong\u003e 82%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndoor \u0026amp; Outdoor:\u003c\/strong\u003e ASME\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Type:\u003c\/strong\u003e Gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVenting:\u003c\/strong\u003e Category I\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 120\/240VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhase:\u003c\/strong\u003e 1-Phase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Water Flow:\u003c\/strong\u003e 100 GPM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Raypak","offers":[{"title":"Default Title","offer_id":50741567652128,"sku":"017707","price":4711.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/3326\/9536\/files\/017705_Raypak_207A_Digital_Low_NOx_ASME_Pool_Heater_Discount_Pool_Mart_1.jpg?v=1766000043","url":"https:\/\/discountpoolmart.com\/products\/017707-raypak-337a-digital-low-nox-asme-pool-heater","provider":"Discount Pool Mart","version":"1.0","type":"link"}