Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Johnson Controls Pressuretrol??

jpf321 Member Posts: 1,568
My neighbor has a Johnson Controls Pressuretrol on a Weil McClain boiler .. I tried to "crank down" the pressure today but it didn't seem to want to go below 5PSI cut-out. It was a standard looking GREY metal box type with 2 squared off adjusting screws on the top just like a standard honeywell pressuretrol. The scale on the front had a left arrow indicator for cut-in and a right indicator for cut-out (the arrows shared the same scale) .. is anyone familiar with this beast? Does it crank below 5PSI cut-out? I did not open the unit up, is there perhaps an internal adjustment? It stated on the label that the minimum pressure differential (cut-in vs cut-out) was 1.5PSI and the MAX was 8PSI if that's any help.

No, I don't have the model number of the installed unit, but I suppose I could get it if it's really required to answer my question.

1-pipe Homeowner - Queens, NYC

NEW: SlantFin Intrepid TR-30 + Tankless + Riello 40-F5 @ 0.85gph | OLD: Fitzgibbons 402 boiler + Beckett "SR" Oil Gun @ 1.75gph

installed: 0-20oz/si gauge | vaporstat | hour-meter | gortons on all rads | 1pc G#2 + 1pc G#1 on each of 2 mains

Connected EDR load: 371 sf venting load: 2.95cfm vent capacity: 4.62cfm
my NEW system pics | my OLD system pics
This discussion has been closed.