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Always verify the MFD rating on the old part's label before installation
reducing nuisance furnace lockouts
including LF24 unit heaters and various furnace series
Its compact design facilitates straightforward mounting in tight furnace cabinets
Siemens Building Technology RAA20U Thermostat Els PW 17895 Always verify the MFD ratingThe Siemens RAA20U Thermostat is a high performance mechanical solution designed for precision temperature control in heating only or cooling only applications. Functioning as a two wire, gas diaphragm based room thermostat, this unit offers a reliable two position (on off) control algorithm suitable for both 24V low voltage and line voltage systems (24 to 277 Vac). As a veteran technician knows, the Siemens RAA20U is the direct replacement for 1A10
