To get email notification when someone adds to a thread you're following, click on the star in the thread's header and it will turn yellow; click again to turn it off. To edit your profile, click on the gear.
The Wall has a powerful search engine that will go all the way back to 2002. Use "quotation marks" around multiple-word searches. RIGHT-CLICK on the results and choose Open Link In New Window so you'll be able to get back to your results. Happy searching!
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.

Swap McDonnell MIller 47-2 with VXT 120

JEMM55JEMM55 Member Posts: 47
I want to remove my McDonnell Miller 47-2 and change it to a VXT water feeder.

There are two wires attached to the #2 switch on the 47, Do I simply wire the VXT into that?

I have a model PS 800 low water cutoff already hooked up so the manual feeder is redundant with the switch.

The feeder is old and not working right so I want to change to a vxt..

Anybody who knows?


  • astoria2013astoria2013 Member Posts: 15

    the two wires from the 47-2 were just part of the switch that cut power to boiler when water was low.  I suggest just splicing those two together.

    Next, if the PS800 cutoff is already wired, run a line and neutral from PS800 to vxt line and neutral.  Then you need a wire from the W of the PS800 to the vxt feed.

    Of course I recommend a good boiler guy do this or electrician, but if you are gonna do it yourself,  has the perfect wiring diagram for the old PS800 and new (page 2)
  • Charlie from wmassCharlie from wmass Member Posts: 3,541 ✭✭✭
    If the boiler is large enough or

    your area requires it, you may need 2 LWCO's on your boiler. Is the PS8000 an automatic or manual reset model?
    Cost is what you spend , value is what you get.

    cell # 413-841-6726
This discussion has been closed.


It looks like you're new here. If you want to get involved, click one of these buttons!