Old Room stat question

Joined
7 Nov 2008
Messages
145
Reaction score
1
Location
Mid Glamorgan
Country
United Kingdom
My parents have a very old room stat on the wall, Drayton type RCT 6(2)A 200/250V. There is a cable, looks like a 1mm twin and earth going from it to where the old boiler was. They had a replacement boiler put in, itself now being quite old (optima 701 combi) and the room stat has never been connected to it. I have over the years put TRVs on the rads and installed a bypass valve. The boiler cycles quite frequently to correct this I am wondering if the old room stat can be wired to this boiler.

The connectors on the boiler state that attaching 240V would damage the PCB and 24V is required.

Would attaching this room stat to the boiler with the existing 1mm twin and earth work as there is no mains power to the room stat, any current going into it would presumably only be from the PCB ie 24V.

Could the PCB be damaged? would it work ok or would the 24v from the PCB simply be insufficient to work with the 200/250V room stat
 
Sponsored Links
thanks Dan.
I was hoping not to have to spend any money on this.
I would like to try it out but my main concern is if it dont work will wiring it to the boiler harm the PCB or will it simply not work. If the latter then I will get a new stat.

Im thinking it will not harm the PCB as there is no mains current 240v going to the stat. however I would like some confirmation before I proceed as Im not certain.
 
If you connect the switching pair in the stat to 4 & 5 after you remove the link it should be fine.

A pic showing the connections in the stat would be good.

Where are the wires at the other end now.
 
Sponsored Links
If you connect the switching pair in the stat to 4 & 5 after you remove the link it should be fine.

A pic showing the connections in the stat would be good.

Where are the wires at the other end now.
This one will not work with low volts. dia
 
Draytons earlier stats can't remember what the upgrade was sorry, I will see if can dig it up.
 
I think I will get a new one. Thanks for all the advice.
Flameport that model looks suitable. Do you know if they supply the wire with it? If not what is a suitable wire for it. can it be used with the existing 1mm twin and earth?
 
i have a brand new RAA20 still in the box. If you want it , you can have it for £5 including postage.
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Sponsored Links
Back
Top