verify that your orifice sizes match the manifold’s output to avoid over-firing or under-firing the system

ensure the sensitivity of your conductivity relay matches the liquid's properties to prevent under-sensing issues

While it can be wired for single speed

and DM coils

Durable Construction: High-grade materials resist oxidation and thermal fatigue

Trane BRD06889 Main Board EZ-Flush verify that your orifice sizesThe Trane BRD06889 Main Board is a genuine OEM electronic control board engineered to manage critical operating functions in compatible Trane HVAC equipment. As the primary control module, it monitors system inputs, coordinates operating sequences, and communicates with connected components to ensure reliable equipment performance. Replacing a failed or damaged main board with the correct OEM part helps restore proper unit operation, maintain factory