Hi,
I currently have a Potterton PRT1 room thermostat and wish to change it out for a programmable type.
The existing one has a 3 connections (L, N, H) . Have presumed this is Live, Neutral & Heat.
Have looked at numerous thermostats on the market and all seem to have 2 connections (volt free contacts)
Would it be correct to assume that I need to use L & H ???
Any help would be gratefully received.
With thanks
Andy