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Seco, sorry to drag this up again but still having problems with this, did what I thought was correct and wierd things started happening with the heating and H/W - Long story and wont bore you with it!
Anyway would you mind answering a couple more questions?
I think what you are saying is disconnect the old stat, being very careful with the produding wires, turn electrics back on and with the controller set to HW on constant find out which is the 'live' wire - Correct? Have a multimeter but never really used it, can you explain how to test this wire?
Once I have found this, this wire then goes to common on the new stat?
The other two wires are as you have already stated?
Bit difficult to explain but the valve is no where near the cylinder and stat, and seem to going through a couple of junction boxes to the floor below, is there a way of checking which one is which as the coloured wires going into the mid port are not the same as the stat end
Once I have assertained which is the live 'c' wire, will it cause damage/be dangerous to do the old 'try it and see' method and swap the other two wires if it does not work correctly?
Hope this makes sense
Really appreciate your time and answers on this one.
Anyway would you mind answering a couple more questions?
I think what you are saying is disconnect the old stat, being very careful with the produding wires, turn electrics back on and with the controller set to HW on constant find out which is the 'live' wire - Correct? Have a multimeter but never really used it, can you explain how to test this wire?
Once I have found this, this wire then goes to common on the new stat?
The other two wires are as you have already stated?
Bit difficult to explain but the valve is no where near the cylinder and stat, and seem to going through a couple of junction boxes to the floor below, is there a way of checking which one is which as the coloured wires going into the mid port are not the same as the stat end
Once I have assertained which is the live 'c' wire, will it cause damage/be dangerous to do the old 'try it and see' method and swap the other two wires if it does not work correctly?
Hope this makes sense
Really appreciate your time and answers on this one.