and auxiliary heating circuits

140 is the opening temperature (140°F)

What are the signs of a failing 117U6015 start relay

What are the wiring colors

Functional Devices TR40VA013 Transformer and auxiliary heating circuitsThe Functional Devices TR40VA013 is a multi tap 40VA control transformer engineered for versatility in demanding HVACR and industrial automation environments. This step down transformer features primary voltage taps for 480 277 240 208Vac, converting line power to a stable 120Vac secondary output. Built for durability, it includes an integrated circuit breaker for reliable overcurrent protection, eliminating the need for external fusing in many