Drayton Room Thermostat - will not activate heating

[Yorkmeister]

Hello everyone

I am hoping I am asking for some very simple advice. We have a gravity fed water/heating system with an electronic thermostat in the lounge for the pumped heating. The thermostat display in the lounge constantly played up so I have opted to replace it with a more simple thermostat that doesn't need batteries with the Drayton RTS 1.
I am certainly no electrician but believed I could replace this without any dramas.
After turning the power off I removed the old thermostat from the wall exposing a black and red wire. I connected the new thermostat with the black going to the N and the red going to the L on the RTS 1. This all went well without any dramas.
Now, when turing the dial on the thermostat a 'click' is heard which I assume is the relay BUT this is not activating the heating.
Can anyone please help as the wife is not best pleased and it is getting cold!

 

[bernardgreen]

You need to make 3 connections to the RTS1, Live and Neutral as you have and a switched live ( call for heat ) on terminal 3. Live and Neutral supply power to the thermostat and the thermostat connects Live to terminal 3 when heating is required.

If there are only two wires in the cable then the RTS1 cannot be used. Do NOT use the bare CPC ( earth ) wire.

 

[Yorkmeister]

I was sure that this thermostat could be used in a 2 wire setup but you have confirmed that this is not the case. Thanks for taking time out to reply.

 

[ericmark]

If the orignal was battery operated you may not have a neutral.

In theroy when using two core cable for line and switched line the neutral coloured cable should have a sleeve to show it's not neutral but often this is omitted.