{"product_id":"haywardfdheaterbypasscartridgekitfdxlbpk1930hppfdxlbpk1930","title":"Hayward FD Heater Bypass Cartridge Kit | FDXLBPK1930","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward FDXLBPK1930 Bypass Cartridge Kit – Universal H-Series Low NOx Heaters\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e FDXLBPK1930\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThis bypass cartridge kit is designed for select Hayward Universal H-Series Low NOx pool and spa heaters. It allows the heater to bypass the standard flow path when required, maintaining proper flow and operation while extending system life.\u003c\/p\u003e\n\u003ch2\u003eCompatibility \u0026amp; Fitment\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFits Hayward H-Series “FD” model heaters (for example H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP) as originally specified.\u003c\/li\u003e\n\u003cli\u003eRecommended replacement when the existing bypass cartridge is worn, clogged, damaged, or the heater displays flow-related errors.\u003c\/li\u003e\n\u003cli\u003eDirect replacement for systems that list part number FDXLBPK1930.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFeatures \u0026amp; Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBypass cartridge design optimized for the hydraulic requirements of Universal H-Series Low NOx heaters.\u003c\/li\u003e\n\u003cli\u003ePrecision-engineered to maintain proper flow, pressure drop, and heater performance under varying conditions.\u003c\/li\u003e\n\u003cli\u003eIncludes all cartridge components required for a full bypass assembly rebuild.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eTurn off heater system power and shut off gas supply. Drain or isolate the water flow through the heater and relieve system pressure. Remove the existing bypass cartridge assembly, inspect housing and seals for wear or damage, install the new FDXLBPK1930 kit ensuring proper orientation and seating. Restore water flow, purge air, power up the heater, and verify proper ignition and stable operation.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tip\u003c\/h2\u003e\n\u003cp\u003eInspect the bypass cartridge during each annual heater service. If you detect debris buildup, restricted flow, scoring or wear on cartridge elements, replace with the FDXLBPK1930 kit to avoid flow faults, heater lock-outs or reduced efficiency.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":46797828620463,"sku":"FDXLBPK1930","price":40.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/hayward-fd-heater-bypass-cartridge-kit-fdxlbpk1930-heater-parts-8364951.jpg?v=1777067853","url":"https:\/\/freshized.com\/products\/haywardfdheaterbypasscartridgekitfdxlbpk1930hppfdxlbpk1930","provider":"Freshized","version":"1.0","type":"link"}