Description
The Robertshaw 5225-112 M/R Hi-Limit Control Thermostat is a temperature safety control instrument used to limit excessive heat conditions within HVAC systems in heating equipment such as furnaces and air handling units. It operates as a high-limit cutoff that responds when temperatures reach 450°F, triggering interruption of the circuit to restrict further heat rise. The unit uses a 30-inch capillary tube for sensing remote temperature points and transmitting thermal response to the control mechanism. Installed in duct or burner assemblies, it is mounted and routed during setup for thermal monitoring and protective temperature regulation.
