Tjernlund Fan Proving Switch

Overview: The Tjernlund PS1505 fan prover has been designed to monitor the pressure within the fan housing only. A motor or wheel failure will decrease housing pressure and deactivate the pressure switch, thus preventing combustion. To satisfy national mechanical codes for oil and gas installations, draft inducers must be properly interlocked with burner circuits. The PS1505 fan proving switch monitors pressure within the inducer housing to verify inducer operation. Used in conjunction with the UC1 universal control, (sold separately) it assures compliance with codes and simplifies electrical interlock with all 24/115 VAC burner circuits. The PS1505 is not compatible with millivolt gas valves. Features Simple Installation Mounting Hardware Furnished Fixed Set Point