Trane KIT15331 Pressure Switch 321702-401 and the integrated mounting bracket

and the integrated mounting bracket required for direct installation into the combustion chamber

making it a drop-in HVAC replacement part for existing Enviro-tec control configurations

inspect for signs of corrosion

this part is the designated pressure switch for Outdoor Knight XL and Aquas OXN models ranging from 601 to 801

This coil is specifically designed for the Burnham V7

Trane KIT15331 Pressure Switch 321702-401 and the integrated mounting bracketThe Trane KIT15331 Pressure Switch is a specialized high altitude conversion kit designed to maintain precise combustion analysis and safe furnace operation at elevations typically exceeding 4,000 feet. At these altitudes, the lower air density results in insufficient negative pressure for standard factory switches, which can lead to nuisance lockouts, pressure switch errors, and unreliable draft inducer performance. This OEM High Alt Press Switch