Hi, I have replaced an old programmer with a Drayton Lifestyle LP722 and decided to replace an old Honeywell mechanical (bimetal strip) room stat with an RF one. I bought the Screwfix Horstmann HRFS1 Stat but am not sure how to connect the two up. The boiler is an Ideal Mexico CF80 from the 1980s and the whole system is configured in the Sundial "Y" plan format. The room stat shows a wiring diagram for 230v application and a diagram for volt free application. Any suggestions as to whether or not I need to use 230v or volt free wiring? If you need any more info to help please reply and I will supply more detail.
thanks
nigel
thanks
nigel