Engineered with a set point of
contractors can eliminate waterlogging in heat exchangers and unit heaters
making it a universal fit for various equipment depths and mounting profiles
it is calibrated to open the circuit when the internal plenum temperature reaches its 145
With a maximum working pressure of 680 psig and a maximum fluid temperature of 250°F
McDonnell & Miller 309100 Switch Els PW 17895 Engineered with a set pointThe McDonnell & Miller 309100 Switch, also known as the Model Number 11 Switch, is a heavy duty replacement switch kit designed for field repairs of float type low water cut offs. Engineered for automatic reset operation, this unit features two SPST switches that allow for simultaneous control of a burner circuit and a secondary function, such as an electric water feeder or a low water alarm. It is fully compatible with Series 61, 64, 67, 69, 764, and