Electrical Questions? Ask an Electrician Online.
Please attach a well focused, close up photo of the wiring diagram glued inside the service panel,you can use the paper clip-icon at the right end of the toolbar at the top of this dialog box
If there is no paper clip-icon, look for the '+attach files' link at left of your send button.
I can mark it up with trouble shooting instructions.
Hello again, I have to come and go to do research and juggle several questions at a time.. right now I need the model number of the "MM" low water cut off control.
oops I see the MM is mc***** ***** RB 122
It will take me a while to look both of them up and sort out the wiring.
I am going to make a CAD drawing for you, its going to take me half an hour or so.
I need a photo of the boiler wiring diagram to be sure that I integrate new level control properly. There are more than a few options.
Here is your connection diagram, the dark diagram on the right is a screen shot the wiring diagram
Thanks for letting me work with you. When we are finished, if my answer has been polite, professional,and thorough, please click one of the ratings . If you still need help let me know!. Expert is not paid for assisting you until you rate answer. Feel free to follow up for30 days at no additional cost.
Hello again, That low water safety cut off switch is a *critical safety device, a licensed boiler service person needs to do that wiring if there is any confusion what so ever.
It will be quite easy for you to make a fatal mistake if you are not very wiring savy.
If you can rate my work positively for the superb CAD drawing I sent you, I will appreciate it, that is how I earn my living. The wiring itself in this case needs to be done by a pro boiler tech.
If you need help locating one, tell me which direction you are from the center of the nearest city and I will get you a short list of the best rated ones in your area.
I will put the rating box up now.