System Monitoring: Integrated LED indicator provides immediate visual confirmation of the relay coil status

meaning it stays open when pneumatic pressure is removed

This is a 24V AC relay designed to interface directly with standard HVAC control boards and thermostats

reducing wiring complexity and potential interference

Raypak 007157F Board Refrigerant System Monitoring: Integrated LED indicatorThe Raypak 007157F is a critical Low Water Cut Off (LWCO) PC Board designed for seamless integration into Raypak atmospheric heaters and Hi Delta boilers. This replacement ignition control board ensures the safety circuit remains closed only when adequate water volume is detected, protecting the heat exchanger from dry fire conditions. Engineered for precision and rapid response, the 007157F board utilizes advanced microprocessor logic to monitor