Wiser question

[FunkMaster]

Hi Guys,

Moved into a new build and want to upgrade to a smart heating system and decided on the wiser after much reading.

Anyways, bought on the Black Friday a Wiser Thermostat kit 3 as the current house has 2 zones and heating.

Long story short … I’m worried what I have isn’t right.

The current house has:

1x ThermaQ TQX0027
2x Honeywell Home T3

My thinking was the ThermaQ is where everything was connected from but opened it up and aside from the live/neutral/earth it appears this thing only controls the hot water

Then I went to look at the thermostat and am of the belief that they are hard wired. I can’t quite work out how to remove the thing to see the wiring.

Any advice would be appreciated any thoughts on what I actually need to do.

 

[oldbutnotdead]

A bit (not a lot) of mechanical force is needed to pull the works from the backplate. Try it- you should get some decent leverage with a screwdriver stuck in the grey slot bearing against anything about 15mm thick (clothespeg) above or below the thing.
But removing them may not help much- you need to find the wiring centre- most likely in the airing cupboard.

 

[FunkMaster]

A bit (not a lot) of mechanical force is needed to pull the works from the backplate. Try it- you should get some decent leverage with a screwdriver stuck in the grey slot bearing against anything about 15mm thick (clothespeg) above or below the thing.
But removing them may not help much- you need to find the wiring centre- most likely in the airing cupboard.

Yeah managed to get it off …

Then realised that for some reason this whole system has a unique wiring system and as you say, there is a wiring hub in the airing cupboard.

Mind is a bit blown now … am not going to try fiddle in there

Seems to be 3 valves and a pump of some sort all wired up to this beast.

I’m somewhat thinking for smart heating, get the wired Tado kit + extra thermostat. Leave the hot water as it is on the existing controller.

 

[oldbutnotdead]

Not a unique setup at all, pretty standard. Nice neat wiring centre they've put in.
You can probably use your Wiser 3 controller on it, the right hand vertical set of terminals appears to be marked PROGRAMMER and has all the correct references on it (HW ON, CH1 ON, CH2 ON). You'd be wise to check first that those lines are switching 240v- the 2 channel Wiser that you have doesn't have volt free contacts.

 

[FunkMaster]

Aaaah I think what you’re saying is that the Kit three would be wired up there rather than at the wall where the existing thermostats are located?

This those would be redundant essentially.

 

[oldbutnotdead]

Aaaah I think what you’re saying is that the Kit three would be wired up there rather than at the wall where the existing thermostats are located?

This those would be redundant essentially.

Correct. The Wiser hot water channel was (maybe still is, not looked) just a timed on/off switch, it relies on the cylinder stat to control temperature.
The 2 Wiser room stats you got in the box will replace your existing room stats. Without the smart TRVs all you really gain is programming and remote control via an app on your phone. Very handy if you live on your own and have a variable schedule, not so useful for a family.

 

[FunkMaster]

Thanks for the replies.

I’ll have a rethink; the water part I’m not to bothered by as the tank supplies the water from what I know. It’s the room temps that really is what drove me down the smart thermostats.

Noticed that Tado does a wired kit; just for thermostats and they can control smart TRV’s; presume this might actually work; leaving the heating as it currently is and just hooking up a Tado wired + hub onto zone one, a second one onto zone 2 and then some smart TRV’s.

 

[Ltnman]

If it isn’t broken why fix it?

 

[FunkMaster]

Just to wrap this thread up … managed to install a Tado wired kit + extra wired thermostat and with some TRV’s, got it wired up, installed and configured.

Time will tell on the savings aspect but have already found that the house has a much more contestant temperature and can fire up the RADs at the click of a button