this model number refers to the valve body and internal trim only

this ECM condenser fan motor utilizes an integrated control module to modulate fan speed

When troubleshooting intermittent pilot lockout or weak thermocouple signals

When you are performing a **boiler control board replacement**

Fireye ZB110UV Chassis 322838-753 this model number refers toThe Fireye ZB110UV Chassis is a core component of the BurnerLogix Z flame safeguard system, designed for high end industrial and commercial burner management. This 120VAC chassis features an integrated non self check UV amplifier, making it a direct solution for detecting ultraviolet radiation in gas or oil flames when using compatible 120V scanners. Unlike the standard Y system, the Z series chassis incorporates advanced boiler control functions,