Ensure your controller matches this voltage requirement before installation

The Belimo B219+LRB24-SR is a precision-engineered 2-way characterized control valve (CCV) assembly designed for high-performance hydronic control in HVAC systems

or "open circuit" fault codes on the control board that persist even after replacing sensors

allowing for higher speed limits and lower friction

three inlet drain holes

Fireye UV7A4W Scanner 321042-401 Ensure your controller matches thisThe Fireye UV7A4W Flame Scanner is a high sensitivity ultraviolet sensor engineered for industrial combustion flame safety in gas and oil burners. Designed specifically for systems that cycle on and off frequently, this Fireye UV scanner utilizes a gas filled quartz UV tube to detect radiation in the 185 to 245 nanometer range. This NEMA 4 flame sensor features a rugged construction with a 1 2" NPT insulated nylon coupling and a 4 foot shielded