Maxitrol Signal Conditioner 2 Stage(0-10 vdc input/ 0-20 vdc output)

Selectra Series SC30 is designed for Indirect Fire Gas Applications Using 2-speed Inducers and 2-stage Gas Valves. The track mounted SC30 Series controls three functions: Converts a controller's DC output signal of 0-10 volts to a 0-20 VDC signal to provide compatibility with Maxitrol's M/MR Series gas valves. Controls the normally open relay used to switch inducer speed and gas valve stage. Closes or opens the relay based on controller's DC output to the SC30. Provides an adjustable timer SC30 (0-30 sec) or fixed time, specified in 15 second increments (beginning with 45 seconds - and adjustable VDC (5-15 VDC) output to the modulating gas valve on start-up (powering of SC30). Note: The feature eliminates problems associated with lighting the burner at its lowest gas input.