Lochinvar & A.O. Smith 100111063 Blocked Outlet Switch

Lochinvar & A.O. Smith 100111063 is a Blocked Outlet Switch which is a safety device for gas water heaters and boilers. It checks the exhaust vent for clogging and, in case of a blockage, the system will turn off to avoid accumulation of hazardous gases or overheating. By attributing appropriate air flow rate and guarding the HVAC devices from any harm, this switch plays a significant role in system safety, durability of the equipment and optimization of its efficiency; therefore, it is necessary in heating systems for safety.