Top Part # 6223-570 Manufacturer Code UHXNEGVT12506 Alternate Part #’s UHXNEGVT12501, 47-150-1655, HPPUHXNEGVT12506 Product Description Hayward UHXNEGVT12506 Indoor Vent Adapter Kit The Hayward UHXNEGVT12506 Indoor Vent Adapter Kit is an essential installation component designed specifically for Hayward pool and spa heaters that require safe, reliable indoor venting. Built to meet stringent venting and performance standards, this adapter ensures your heater operates efficiently while maintaining proper negative-pressure ventilation inside enclosed equipment rooms. This updated kit replaces the previous model UHXNEGVT12501, offering improved compatibility and installation alignment with current Hayward heater designs. Whether you’re installing a new heater or updating an existing setup, this adapter kit provides the secure connection needed to transition from the heater’s exhaust outlet to a properly designed negative-pressure venting system. Key Features Optimized for Indoor Installations Designed for use when a Hayward heater is installed indoors or in confined spaces requiring certified venting solutions. Negative-Pressure System Compatibility Supports vertical negative-pressure venting configurations—critical for maintaining safe airflow and preventing exhaust backflow. Genuine Hayward Replacement Part Engineered to Hayward’s rigorous safety, fit, and durability standards for long-term reliability. Direct Upgrade to UHXNEGVT12501 This kit is the approved replacement for the prior model, ensuring you receive the most current venting components available. Secure Venting Transition Creates a tight, stable connection between the heater and the venting system, helping maintain proper exhaust flow and heater efficiency. Why This Kit Is Important Indoor-installed heaters must be vented correctly to prevent harmful exhaust buildup and ensure peak performance. The UHXNEGVT12506 kit provides the exact adapter required to meet Hayward’s installation specifications. Without the correct vent adapter, the heater cannot be safely or properly vented, and warranty coverage may be affected. Compatible With This kit is typically used with select Hayward pool heater models, including specific H-Series units. Always verify your heater’s model and installation manual to confirm compatibility before purchase. H250 / H250FDN / H250FD Ideal For Indoor pool heater installations Commercial pool rooms, spas, and natatoriums Equipment rooms with limited airflow Replacing or upgrading older vent adapter kits Package Includes Indoor vent adapter components (vertical, negative-pressure configuration) Necessary mounting hardware Updated installation specifications