Schneider Electric (Barber Colman) MP-485 Proportional Actuator R-410A or an improperly sized return

or an improperly sized return air drop

the "/U" suffix typically denotes a Honeywell Tradeline pack

For field techs managing York

The 180-degree "pigtail" design is optimized for vertical orientation to ensure the condensate remains trapped in the bottom of the loop

the 100109867 is specifically calibrated for Liquid Propane (LP) with a 10" WC pressure setting

Schneider Electric (Barber Colman) MP-485 Proportional Actuator R-410A or an improperly sized returnThe Schneider Electric (Barber Colman) MP 485 Proportional Actuator is a heavy duty solution for high torque applications requiring precise modulating control of dampers, valves, and sequencing programmers. Engineered for long term reliability in commercial HVACR environments, this 120V electric actuator features an oil immersed motor and gear train housed in a rugged die cast aluminum NEMA 1 enclosure. With a robust 220 lb in torque capacity and a