including R-404A and R-507

This model features a factory-installed 12A39 vent limiter

technicians benefit from the standard mounting footprint and terminal orientation

Can I use these for steam service

Midco International 4090164 Burner Assembly 326058-756 including R-404A and R-507The Midco International 4090164 Burner Assembly is a high performance combustion component engineered for commercial and industrial HVAC systems. Specifically designed as a direct replacement for 4090120, this RE4400DS BurnerAssy maintains system integrity in gas fired furnaces and boilers. The assembly features an integrated 30 second pre purge cycle, a critical safety protocol that clears the combustion chamber of residual gases before direct spark