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Dales-Electronic
Dales-Electronic, HVAC Technician
Category: HVAC
Satisfied Customers: 1464
Experience:  I am a Home Appliance / Refrigeration Technician of 25yrs+ with my own business and for multi-brand national companies.
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HOW TO WIRE A HONEYWELL CM900 RELAY BOX PROGRAMMER TO A POTTERTON

Resolved Question:

HOW TO WIRE A HONEYWELL CM900 RELAY BOX PROGRAMMER TO A POTTERTON HEATMAX COMBI HE BOILER
Submitted: 1 year ago.
Category: HVAC
Expert:  Dales-Electronic replied 1 year ago.
Can you let me have your email address and I will send you the diagrams and explain how to do it. Please replace the @ with (at) - Ian
Customer: replied 1 year ago.
My email***@******.***
Customer: replied 1 year ago.
Please send the diagrams to***@******.***
Thanks Jim.
Expert:  Dales-Electronic replied 1 year ago.
Copy and paste this into your browser - http://interpart.partsarena.eu/System/DATA/Dx/DS1/installation/3941/I51-3941/I51-3941.htm which gives the boiler connections at section 10.7
switched live and neutral to live and neutral on the connector block.
https://www.google.co.uk/search?q=honeywell+cm900+wiring+diagram&espv=2&biw=1366&bih=643&tbm=isch&imgil=ITmC0RVl3AhrhM%253A%253B_mwLiHFNYCvlgM%253Bhttp%25253A%25252F%25252Fforums.moneysavingexpert.com%25252Fshowthread.php%25253Ft%2525253D4782146&source=iu&pf=m&fir=ITmC0RVl3AhrhM%253A%252C_mwLiHFNYCvlgM%252C_&ved=0ahUKEwixg6PlmN7KAhXFnQ4KHeA9Bt0QyjcIPQ&ei=Sk-zVrG2N8W7OuD7mOgN#imgrc=ITmC0RVl3AhrhM%3A
So to explain briefly - you need a live and neutral supply to both the thermostat and the boiler ~ as can be seen on the google image.
In the thermostat the live is linked so that it can feed the boiler.
Let me have your phone number once you have printed out the two diagrams and I will take you through it.
Customer: replied 1 year ago.
***********
Expert:  Dales-Electronic replied 1 year ago.
OK I am out of the office at the moment give me about an hour and I will call you back.
Expert:  Dales-Electronic replied 1 year ago.
Called you - it went to vm
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