Replacing a degraded IDM pressure switch restores system sequence of operation and prevents burner ignition failure during high-demand heating cycles

Structural Integrity: Genuine OEM parts ensure correct gauge thickness to prevent warping under high-limit temperature cycles

calibrated to verify that the induced draft motor is generating the correct static pressure within the heat exchanger before ignition

A faulty 626338R limit switch typically causes the furnace blower to run continuously or prevents the burners from igniting

These are the same 1/4 HP compressor unit

Honeywell VP512A1742 Valve 322056-301 Replacing a degraded IDM pressureThe Honeywell VP512A1742 is a heavy duty, 1 inch normally open pneumatic unit ventilator valve designed for the proportional control of steam or hot water in commercial HVAC systems. Built with a right angle body pattern and high quality bronze construction, this globe style valve features a 10 Cv flow capacity and a 3 8 psi spring range, ensuring precise modulation for terminal unit applications. As a direct replacement for 658 0012, it is engineered