What is the maximum operating pressure differential for the 540RA12T9

Using non-spec parts can lead to improper fan cycling or safety limit trips

it provides fail-safe reliability by returning to the normally open position during power loss

and many obsolete models like ADFH and DFAV produced after August 1999

consistent pilot flame for reliable ignition

Nordyne 632546R Pressure Switch 324846-701 What is the maximum operatingThe Nordyne 632546R Pressure Switch is an essential safety component engineered for precise airflow verification in residential and commercial gas furnaces and packaged HVAC units. This OEM Nordyne pressure switch utilizes a dual setting configuration with trip points of 1. 0 in WC (high) and 0. 6 in WC (low) to monitor the pressure differential created by the draft inducer motor. As a veteran grade furnace pressure switch replacement, it ensures the