Resideo RRD5 Damper 322055-301 The normally open auxiliary switch

The normally open auxiliary switch is typically wired in parallel with other zone valve end switches to the T-T terminals of a boiler or a circulator relay

ensuring the start circuit is engaged and disengaged at exactly the right parameters to prevent motor winding damage

Rely on this NPT globe valve for long-term durability in heavy-duty mechanical rooms

featuring a durable cast iron pillow block housing with a powder coat epoxy finish for enhanced resilience

Resideo RRD5 Damper 322055-301 The normally open auxiliary switchThe Resideo RRD5 is a high performance 5 inch retrofit round damper designed for professional contractors a looking to integrate reliable zoning into existing rigid ductwork. This HVAC bypass damper features a 24Vac 3 wire floating actuator that provides power open power closed functionality, ensuring the blade stays exactly where the TrueZONE panel or control system commands it. With an actuator torque of 35 in lb and a 90 second timing cycle, the