nest 3rd

Hello everyone, I am looking to change my naff ESI thermostats to Nest gen 3's and wondered if someone could help me with the wiring. I have two motorised valves in the upstairs airing cupboard along with the wiring centre. I've checked the back of the facia on the wiring centre and there isn't...

Hi About 2 months ago we had a neat fitted and UFH with its own thermostat. The CH did work when it was first installed but with it being summer it was left unused. Now the Nest does not appear to be firing up the boiler. The green dot is on the heat link which means they're connected. The UFH...

Hello I managed to replace our old Honeywell ST9420C and wireless thermostat with the Nest Learning Thermostat V3 using the following wiring layout: Honeywell-Nest N-N L-L, 2 & 5 4-3 3-6 Previously, on the old Honeywell programmer there were just 4 wires - N, L, 3, 4. This is working fine...

Ive opened a can of worms by researching the heating system for our refurbishment. We are having a central heating system installed. The proposed boiler is a Vaillant ecoFIT pure (think 618 but not definite). The heating will have 3 underfloor heating circuits for two zones. Builder intends...

Sorry in advance long post plenty of questions I managed, years ago to change my controller (kitchen) and thermostat (hall) and it all still works - I have heating and hot water tank, mid positon valve, hot water timed on kitchen controller, heating permanently on at controller and then...

Hi. So Combi Boiler Heating type: Water Underfloor heating, Only one Zone. Nest type: Nest Thermostat E (Images For Reference) Just received the Nest Thermostat E and trying to replace it instead of the OLD Thermostat, but I am having some difficulties with connecting the underfloor heating as...

I’ve recently had a nest 3rd gen thermostat installed into this boiler, seemed nifty at the time however, this replaced no previous thermostat (we used to manually switch it on and off and there’s a panel at the front with a analog timer). So the nest 3rd gen replaced this. It’s been a few...

Hi, I'm looking to replace my Honeywell CM907 thermostat with a Nest Thermostat. I'm happy to get someone in to do it but if it's simple enough the I'll do it myself. So, I've read the guide online (it's not been delivered yet) and I'm a little confused. Do I just need to wire in the...

Hi all, Just wondering if anyone knows if there is a way to call for central heating/turn central heating on without a thermostat? Reason is, I've had an electrician install a Nest for me but I'm pretty sure they've not done it correctly, as now the CH is not working - However I don't want to...

Hi everyone, So after reading the many other threads about problems with the nest, i cant find any issues which match mine. I'm pretty sure i have a Y plan system and that i have wired the Nest correctly, after wiring it in the heating and hot water all come on but the heating will not switch...

Hello All, First off - My apologies for yet another nest install post. I just dont want to get it wrong and am installing myself. No previous knowledge of boiler work but a family memeber kindly purchased us one for Christmas but I cannot afford for a specialist to do it for me. Within the...

Hi, I would love to get advice on upgrading my Nest thermostat to the Nest version 3 that controls your HW apart from heating. I have the Nest that just controls your heating. My condensing boiler is the Glow-Worm Ultracom 38hxi and the Nest Heat link is connected to the boiler and within 1m...

Hi, I'm looking for some advice on a new Nest V3 Installation for hot water and heating control. I currently have a Y plan system with the following components: - Boiler - Ideal Classic FF350 in the utility room. - Programmer - Danfoss FP715 (below the boiler). - Danfoss - thermostat in the...

Hi all, I connected my Nest to my combi boiler (Viessman Vitodens 100) using OpenTherm. I navigated through the settings menu and I moved from On/Off to OpenTherm. Thermostat also asks for parameter about water temperature. What do you normally choose? Moreover, accessing to my Nest using...

Hey all, I've read numerous threads on here about installing Nest 3rd generation into the home (such as this good one - kudos to @stem). I'm really tempted to do this myself but my wife will kill me if I screw up the heating at this time of year! If anyone can give me some pointers, it would...

Hello, I have a year old valiant ecotec pro 28 boiler fitted with a wireless salus thermostat. I want to swap out the salus unit and install the nest system. Ive read loads of forums and still not quite shore what terminals to connect to, could anyone offer a simple diagram or pictures of what...

Hello, I'm going to replace my ESI controls and thermostats with 2 NESTS. I have 2-zone + HW GCH. I think I've worked everything out and I'm confident that I can get this done myself. On the pictures attached you can see main board and zoom on the wires that I can reuse. They are upside down...

Dear Friends, At this moment I have: Ideal W Gas boiler Cold water tank in attic Potterton EP2002 Programmer (can currently control CH & HW independently) Pic 1 Potterton EP2002 Programmer (Wirings) Pic 2 PRT100 Thermostat Pic 3 PRT100 Thermostat (Wiring) Pic 3. My questions are, 1. I did...