Hi all, My old dial room thermostat stopped working earlier this year. It was a Drayton RTS8. I had a boiler engineer out doing the annual service and as a quick (stupid) fix, he disconnected it at the boiler and suggested we run off the built-in on/off/timer if we need heat. Anyway, heading into winter now, I'm looking at sorting it out and would quite like to put a wireless jobbo in. I'm intending to put the receiver where the old dial was, so as to tap into that wiring and avoid having to repair the old site and/or run new wire. The stat can then sit in the living room which is always out of sync heating wise, as it's a disproportionately large room compared to the rest of the flat. The old stat is currently served by 3-core +e. Live (brown) to L, Switched Live (black with brown sleve) to 3, Neutral (blue) to N, and Earth (yellow & green) to the earth term. See pic: I know it would be ideal to run 4-core to the new RF, but can I make do by bridging L to Com? The boiler is fused down to 3A. Alsoooo, as the boiler guy removed the stat wiring from the PCB, I need to re-hook that up. There are two terminals in there, marked as TA 1 & 2. After removing the stat, he looped the two terms together, but as theres only one wire (black (with brown sleve), does it go in 1 or 2? The Live is attached to the Perm L. ￼ The boiler is an Arriston 27 MFFI. Wiring diags here: http://library.plumbase.co.uk/flipbooks/RE/arbmffi27aco_21179_t/mobile/index.html#p=27 I'd probably be looking to go with a Hive or perhaps the Salus IT500. Mucho pounds, I know, but I've been stuck in the dark ages for so long, I'm trying to future proof! Thanks in advance!