McDonnell & Miller RB-24E-L Control 30067439-890 and external contaminants

and external contaminants

suitable for large-scale residential and light commercial systems

The two sets of contacts allow one circuit to send a signal to the Fire Alarm Control Panel (FACP) while the second circuit triggers a local horn-strobe or remote monitoring station

By stabilizing internal pressure

this unit operates within a precise range of -55°F to 0°F

McDonnell & Miller RB-24E-L Control 30067439-890 and external contaminantsThe McDonnell & Miller RB 24E L (Part Number 144690) is a specialized residential low water cut off designed for 24V hot water boiler systems. This electronic LWCO utilizes a 3 4" NPT probe style sensing element to monitor for hazardous low water conditions, ensuring the burner circuit is interrupted before equipment damage occurs. Unlike manual reset models, this unit features an auto reset function that restores operation once the water level