It serves as a direct OEM replacement for legacy part numbers including Reznor 51357

and light oil (0-120 PSI) applications

ensuring rapid response times for low water cutoff and high-level alarm applications

It serves as a low ambient fan cycle switch

and process heaters

Laars Heating Systems RTXD7115 Control R-407C It serves as a directUpgrade your legacy boiler infrastructure with the Laars Heating Systems RTXD7115 Control, a precision engineered retrofit kit specifically designed to transition systems from Wave 3 to Wave 4A technology. As a veteran technician, you know that maintaining older Neotherm boiler units requires reliable logic upgrades to ensure continued operational efficiency. This OEM control module replaces outdated processor boards, integrating advanced