I m looking to replace an old Honeywell mechanical thermostat with the new Honeywell D90E.
I am a bit confused about the wiring in the old thermostat. I have 4 cables, brown, grey, black and yellow stripped. I am not sure which ones of these though need to be connected to the new thermostat.
Not sure which honeywell stat you have but if it is a T6360 there will have numbers there on old stat.
the green and yellow wire is the earth wire
#2 is the neutral wire
then the other wires will be in #1 and #3 on the old stat one of the wires will be from your clock heating on, the other goes to motorized valve and fires boiler.
Now your new stat has connectors A and B you will have to put the neutral in a block connector to make safe, not sure if you have multi meter but what you want is the wire from the clock ( either 1 or 3 on old stat ) wants to be in A and the one to boiler goes in B
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!
by 