Installing a smart thermostat

FFHillbilly

As long as you're not breaking the combustion chamber seal, you can take the cover off. and the wiring terminals for are never going to be located inside the combustion chamber as far as I know

Leard91

markin said:

No1 "remove main cover" The entire install manual is for the Gas safe installer.

Yes exactly. I don't think I can access the electricals without taking the main cover off, which includes parts that should only be accessed by a gas safe engineer.

ThisIsWeird

Looking at the video - if that is the same boiler - it does look as tho' the whole boiler body comes off as one! Front panel and sides. This reveals an open upper chamber. So, according to that, it doesn't appear DIY. Or even a  non-GS sparky job!
Carpy design if correct.

chris_n

Surely there is no way a cover that big that has 4 screws holding it is a sealed combustion chamber cover.

ThisIsWeird

chris_n said:

Surely there is no way a cover that big that has 4 screws holding it is a sealed combustion chamber cover.

I suspect not. But I ain't going to speculate further as I don't know for sure.
If Leard is electrically competent enough for the wiring task and fancies doing this, then he needs to ask WB first, or even ask a GS.

daivid

Leard91 said:

ThisIsWeird said:

Pretty clear that the main front cover does not need to be removed at all.

Press in and release the control cover, and it'll pop down. The control panel behind is held by a single screw along its top. Undo, and the whole control panel will hinge downwards.

https://www.youtube.com/watch?app=desktop&v=sHRNJgr_TBA

Having looked and tried to find out how to do this, I don't think I can access the electrical panel without taking the main cover off. In the image from the manual, you can see the main cover isn't on.

Presumably you already have a 'dumb' thermostat wired in. Depending on what exactly you have the work needed to switch may not require going near the boiler. I replaced an old 24hr programmable stat with a Drayton wiser - all the wiring was in place so no need to touch the boiler - I gather in some cases back plates match so no need to even rewire. One word of caution though the original stat may not have been wired by the book so some working out may be necessary.
*EDIT* Just seem your other thread where you say the boiler has no external thermostat, given that, this is a job for a competent person. The cover on your boiler seals around the combustion chamber so would not class as a cosmetic cover.

jennifernil

Do you have some sort  of timer that controls the off/on periods of your heating?   If so then the tado receiver can replace that.

Our boiler had such a thing wired in just next to it and my OH has fitted a tado system with a wireless room stat starter kit and 12 smart TRVs, works very well.  Shop around for the best prices.

Veteransaver

Leard91 said:

I'm interested in purchasing a smart thermostat for my boiler, specifically the TADO V3+ Wireless Heating & Hot Water Smart Thermostat. The boiler is a Worcester Greenstar 28i Junior. How easy can I expect to find installing this? Tado claim that it's easy to install and that they provide you with the instructions. However, I also recognise that the boiler is fairly old, and might not be compatible. What would installation actually involve?

What controls unit and thermostat do you currently have? If your current system is a central controller type like a Drayton or Honeywell then it is literally just a case of attaching a new bracket and about 4 or 5 wires to it and then attaching the new control receiver unit. (Obviously make sure you turn off the power to the heating system first!)
The control/ receiver unit is literally just a switch, controlled by the wireless thermostat and / or a hub.
Is your boiler a combi?

Lgas

chris_n said:

Surely there is no way a cover that big that has 4 screws holding it is a sealed combustion chamber cover.

Yes it is. All Worcester boiler cases form part of the combustion cover and have 2 or 4 screws. Only Gas Safe engineers should be removing them.

QrizB

Spurred by the various "smart thermostat" threads like this one, I've just bought a semi-smart ZigBee thermostat (this sort of thing) to add to my home automation network. It's going to be replacing a 20-year-old Drayton RTS.

I'll let you know how it goes!