and commercial burners

While it supports 0-10 VDC

5°C to -11

A critical safety component

ensuring proper venting of flue gases before the ignition cycle begins

Lochinvar & A.O. Smith 100167733 Relay 320735-701 and commercial burnersThe Lochinvar & A. O. Smith 100167733 Relay is a specialized 24V HVAC control relay engineered for high reliability switching in commercial and residential hydronic systems. This OEM replacement relay is frequently utilized in Lochinvar boiler control boards and A. O. Smith water heater electrical circuits to manage low voltage signals that trigger high load components. As a direct replacement for the legacy RLY2708 part number, it maintains strict