The Maxitrol TD121B Temperature Selector is a critical component for Selectra Series 21 and 31 electronic gas flame modulation systems

000 BTU output provides necessary emergency heat or supplemental capacity during defrost cycles

Ensure the supply voltage is within ±10% of the 120/240V rating and that the armature is clear of metal shavings or sludge

and digital controllers

Proper balance is factory-verified to reduce bearing wear on the blower motor

Emerson Alco 053003 Filter Drier Els PW 29614 The Maxitrol TD121B Temperature SelectorThe Emerson Alco 053003 (Model STAS 487T) is a heavy duty liquid line filter drier designed for high capacity commercial refrigeration and air conditioning systems. This take apart shell features a 7 8" sweat (ODF) copper connection and a 48 cubic inch internal volume, optimized for CFC, HCFC, and HFC refrigerants, including R 410A, R 22, and R 404A. Built with a sturdy steel shell and a corrosion resistant epoxy powder paint finish, it is rated for a