they should be replaced alongside the housing

By preventing damage from prolonged over-current scenarios

offering seamless integration into existing BAS architectures via a standard 0-10Vdc output signal

quiet operation with a low oil circulation rate

allowing technicians to utilize existing hardware for a seamless fit into the combustion housing

Functional Devices RIBU1CW Relay 320734-701 they should be replaced alongsideThe Functional Devices RIBU1CW is a pre packaged SPDT pilot relay engineered for reliable HVAC control circuit isolation and load switching. Housed in a NEMA 1 rated enclosure, this enclosed relay simplifies field installation by eliminating the need for separate mounting bases or DIN rail kits. It features a dual voltage coil, accepting both 24VAC DC and 120VAC inputs, making it a versatile component for building automation systems (BAS) and lighting