Engineered as a direct substitute for the RLY20001 and RLY20001K legacy boards

Common Questions Regarding the H15AR-3:

The Multi Products 5985 Actuator is a heavy-duty 120V HVAC damper motor designed for high-torque motion control in demanding commercial and industrial environments

the valve will remain closed as a safety precaution

Robust Build Quality: High-tolerance internal solenoids designed to withstand the high-cycle demands of modern boilers

Lochinvar & A.O. Smith 100208154 Gauge 318172-701 Engineered as a direct substituteThe Lochinvar & A. O. Smith 100208154 Gauge Kit is a professional grade Temperature and Pressure (T&P) gauge engineered for high accuracy monitoring in commercial and industrial boiler systems. Featuring a dual scale interface, this electromechanical instrument provides real time diagnostics with a pressure range of 0 200 PSI and a temperature threshold of 50 320F. Designed as a direct replacement for Lochinvar Copper Fin II and Armor X2 models, this