Always verify your boiler's BTU rating and altitude requirements before installation

ensure it is installed according to the wiring diagram

Using it with higher voltage control signals will result in immediate coil failure

In an open circuit test

Versatile Installation: The spring-loaded mechanism allows for reliable operation in any orientation with upward flow

Reznor 148588 Switch Els PW 17895 Always verify your boiler's BTUThe Reznor 148588 is a high performance hi limit switch designed for critical safety monitoring in industrial and commercial heating applications. As an essential HVAC replacement part, this auto reset limit control triggers at a precise 270F setpoint to prevent catastrophic heat exchanger damage and ensure the longevity of the blower system. It features a reliable 60 inch capillary sensor, or 60 inch temp bulb, which allows for versatile remote