which smart thermostat

[marshian]

9 hours ago, SimonD said:

 I've always argued that it's not the heat source that's important but the control strategy and mechanism. With gas systems I always seem to have struggled with getting the system control as I like it, even in my own house where I ended up with a pragmatic solution that was okay, it was efficient, but not amazing. I think this is down to the split between heat source and controller manufacturer and how they decide to implement their control ideology and this causes problems. This is particularly the case with in the gas market.

 

I think manufacturers controls will always be better than 3rd party ones

 

I went down the Wiser route because the manufacturers controls on my old boiler wouldn't have helped - it was already massively oversized and I went down the route of overzoning (but learnt a little on the way)

 

9 hours ago, SimonD said:

I've now completed 2 full system designs and installations of heat pumps where I'm fully responsible for the systems and have to say that with using the manufacturers control packs of course, the control element is just fantastic. Both have required very little time and only small adjustments to WC and room influence, including a tweak to a couple of normal trvs. From this, I have so become a convert to heat pump systems, I really don't want to work with gas any more.

 

Good to hear - must be a nice feeling.

 

My current nice feelings are driven by last week I had 13 "Smart" TRV's on rads - This week I'm down to 5 - replaced with "dumb" TRV's set as temp limiters but not actually intervening at all the flow temps, room temps and circulation pump output are lovely and stable

 

I expect to completely remove all "Smart" TRV's by next week. (They are just remote room temp monitors now they aren't even attached to any rads!!!! )

 

I'll end up with one room stat and a hub running a schedule that is 0600 - 0600 ON.

 

I'm kinda loving the simplicity of it

 

[gaz_moose]

Blimey, Ive not even taken mine out the box and i was the one who needed it the most.

 

Center RF Wireless 7-Day 5/2 Day Programmable Room Thermostat White | eBay UK

 

this is my current one that needs to go in the bin 😁

 

I don't have nice wiring coming out of recessed boxes, i have surface mounted with trunking that goes into the side of the unit (The shame of it), On the 'universal mounting plates' it looks like i can knock the bottom out and feed the wire in from there, Is that right? or have i got to knock up some kind of adapter?

 

 

Ifound this when on my travels Drayton Wiser Room Thermostat Wall Mount by alias7113 | Download free STL model | Printables.com

[-rick-]

7 minutes ago, gaz_moose said:

Blimey, Ive not even taken mine out the box and i was the one who needed it the most.

Sorry for the highjack!

 

7 minutes ago, gaz_moose said:

I don't have nice wiring coming out of recessed boxes,

 

Ha! you should have seen mine. A mess of choc blocks with loose screws and exposed single insulated cables (thanks Mr Installer!)

7 minutes ago, gaz_moose said:

i have surface mounted with trunking that goes into the side of the unit (The shame of it), On the 'universal mounting plates' it looks like i can knock the bottom out and feed the wire in from there, Is that right? or have i got to knock up some kind of adapter?

 

The universal plate should be compatible with the Wiser so you should just be able to slot it on (using existing wiring). To add opentherm cabling yes you can cut out a section of the mounting plate for the wire. Assuming the wire is thick enough then the installed unit should clamp down on it.

 

7 minutes ago, gaz_moose said:

Ifound this when on my travels Drayton Wiser Room Thermostat Wall Mount by alias7113 | Download free STL model | Printables.com

 

The thermostat has a little plastic bracket with it. I liked Camerons idea (in the video I linked) of buying a normal blank plate to go in place of your existing thermostat (assuming its wired remote from your controller) and attach the plastic bracket to that. Having said that I've moved my thermostat to a location closer to the place I want to control the temperature.

 

As an update to my progress, I'm realising that my CH system has been badly designed and have very little hope of achieve low temperature efficient operation without spending a lot more money. My existing radiators can't dissapate enough heat to heat the room at low temp or avoid cycling with the minimum modulation of my boiler. It's likely Wiser could be doing some things differently to cope a little better with this situation but most of the issue is with my CH system.

 

The wiser does a fantastic job of maintaining a very stable temperature (within 0.2C) assuming the CH system has sufficient capacity. (In my case during the day, but it starts losing control as the temps drop at night unless I bump the flow temp up outside condensing range).