Weil McLain 383-600-164 Control Kit SLM S1-SLM S2

​The Weil McLain 383-600-164 SLM S1 to SLM S2 Control Kit operates as upgrade solution for SLM S1 boilers by transforming them into the improved SLM S2 model with better efficiency and performance capabilities in HVAC systems. The kit includes all necessary components to improve boiler operation through its combination of new control board and wiring harness and sensors which deliver programmed setback and outdoor reset functionality. Users who upgrade their system gain enhanced energy conservation alongside better temperature precision and longer-lasting equipment operation. This kit has been specifically designed to work with SLM series boilers for residential and light commercial heating installations ensuring reliable performance.