Schneider Electric (Viconics) R820-623 Power Control 320788-702 Replacing this HVAC collector box

Replacing this HVAC collector box seal during a secondary heat exchanger inspection prevents common furnace pressure switch errors and maintains the factory-spec static pressure required for optimal combustion

Connect the higher pressure source to the "High" inlet (P1) and the lower pressure source to the "Low" inlet (P2)

leak-free connection for professional installations

Loosen the locking setscrew on the movable flange and rotate the disc

Improved Signal Integrity: Minimizes electrical resistance to ensure the ignition module delivers a strong

Schneider Electric (Viconics) R820-623 Power Control 320788-702 Replacing this HVAC collector boxThe 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