Schneider Electric (Viconics) R820-623 Power Control R-448A it supports configurable sequences of

it supports configurable sequences of operation for 2-pipe or 4-pipe fan coil units

including PG9UAA series

or carbon buildup on the internal contacts

This component integrates seamlessly with the Electronic Integrated Control Module found in many Lochinvar and A

For aggressive chemical or marine environments

Schneider Electric (Viconics) R820-623 Power Control R-448A it supports configurable sequences ofThe Schneider Electric (Viconics) R820 623 Power Control is a rugged, microprocessor based SCR Power Controller designed for precise modulation of electric heating loads in commercial and industrial HVACR systems. Rated for 24 600 Vac 3 phase applications with a 25 Amp capacity, this controller utilizes advanced Silicon Controlled Rectifier technology to deliver stable power to duct heaters, baseboards, and fan coil units. Its zero cross firing mode