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oil heater

I changed out my old transformer and control for the newer Becket electronic pieces, the old pump had no solenoid, the new pump has one. Will it work with a 7505a controller? Should all the wiring be done as directed in the diagram? Wii the solenoid delay the oil starting to flow and stop the puffing?


  • STEVEusaPA
    STEVEusaPA Member Posts: 6,376
    The A doesn't have pre and post purge. It's basically a 3 wire control. You can wire the solenoid with the burner motor and it will open and cut-off, but no pre/post purge. You would either need a universal Genysis (I think a P) and the contractor tool to program it.
    Or stick a Carlin ProMaxx, or Honeywell R7248U in and program it yourself.
    HVACNUT Member Posts: 5,474
    The 7505B is factory set for 15 second pre purge.
    Any 7505 settings can be changed with the contractor tool.
    rick in AlaskaSTEVEusaPA
  • cutterjoseph
    cutterjoseph Member Posts: 2
    Thank you for the info, what do you think could be causing to go PUFF? Every time it starts.