By using this kit

Featuring True RMS (TRMS) technology

The Maxitrol TD121A is a precision remote temperature selector engineered for high-accuracy atmospheric gas-fired heating systems

Featuring a lead-free brass body and robust 3/4 inch NPT connections

Typical indicators include intermittent blower motor failure

Schneider Electric (Erie) 436-256 Fitting Refrigerant By using this kitThe Schneider Electric (Erie) 436 256 is a professional grade PopTop inverted flare fitting engineered for seamless integration with Erie zone valve assemblies. Featuring a 1" sweat carbon steel nut and female tube configuration, this fitting is specific to HVEC hydronic systems where reliable, leak proof connections are mandatory. Designed to facilitate quick serviceability, the inverted flare connection allows technicians to secure or replace valve