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Hi folks
I’ve just purchased the above thermostat and decided to go all modern
I have a two year old oil fired boiler with separate hot water tank.
There is a standard Drayton 7 day programmer on the wall.
The boiler has two wall plugs and sockets on the wall one 3 pin std , one 3 pin round . One is pump one is boiler. The boiler was controlled by the programmer until 6 years ago when a thermostat was installed interrupting the wire from the controller to the plug on the boiler.
I intended to install the nest heat link in the boiler room , and replicate the wiring in the programmer but use a junction box to make the job easier and tidier.
I take it all I do is run a n & l to the heat link from the old timer and join live link 2 and 5 then use 2 and 4 from the hw and ch ?
There is no zone valve , seems that to heat the water tank the pump is not switched on so itself turns into a zone valve and water is heated by gravity. Not great I know but I intend getting a zone valve fitted so I can heat the hot water pumped.
To turn my system into a full s plan, all I need to do is add a zone valve and a tank stat ?
Sorry for the long thread but my head is buzzing trying to work this out
I’ve just purchased the above thermostat and decided to go all modern
I have a two year old oil fired boiler with separate hot water tank.
There is a standard Drayton 7 day programmer on the wall.
The boiler has two wall plugs and sockets on the wall one 3 pin std , one 3 pin round . One is pump one is boiler. The boiler was controlled by the programmer until 6 years ago when a thermostat was installed interrupting the wire from the controller to the plug on the boiler.
I intended to install the nest heat link in the boiler room , and replicate the wiring in the programmer but use a junction box to make the job easier and tidier.
I take it all I do is run a n & l to the heat link from the old timer and join live link 2 and 5 then use 2 and 4 from the hw and ch ?
There is no zone valve , seems that to heat the water tank the pump is not switched on so itself turns into a zone valve and water is heated by gravity. Not great I know but I intend getting a zone valve fitted so I can heat the hot water pumped.
To turn my system into a full s plan, all I need to do is add a zone valve and a tank stat ?
Sorry for the long thread but my head is buzzing trying to work this out