Weather compensation sensor with Hive on new combi boiler

[fix]

I'm getting a new Vokera Pinnacle 30C installed with a Hive V4 thermostat which has open therm support, and there will be smart TRV's on most radiators.

I mentioned about a weather compensation sensor to my heating engineer who's said they can be a faff and he doesn't like them.

I'm interested to see if people think they are worth it or not? I really want it setup and to leave alone, not to mess about with etc....

The Vokera boiler has a pretty good modulation ratio so it should already reduce flow temperatures pretty well when not used, but not sure how that works when on but not much heating needed etc..

It's in a dormer bungalow, so upstairs isn't well insulated, but the entire downstairs has just has 100mm or kingspan added to the floors, and there is some old wall insulation in there (not spray foam, apparently not beads, but some kind of loose foam).

Any advice is appreciated thanks!

 

[CountryFan]

@vulcancontinental @muggles May know how best to answer this. Afaik, it’s best to have one type of system, eg OT rather than mix an match, but happy to be proven wrong

 

[fix]

@vulcancontinental @muggles May know how best to answer this. Afaik, it’s best to have one type of system, eg OT rather than mix an match, but happy to be proven wrong

Hi thanks, if I'm better sticking with the Hive Opentherm/rad TRV's and along with decent boiler modulation I'm happy to do so, just trying to get best efficiency I can out of the system

 

[muggles]

Not tried one with Hive and not sure how good Hive's OpenTherm is. I tend to use the EPH CP4i and no weather comp

 

[Exedon]

Not tried one with Hive and not sure how good Hive's OpenTherm is. I tend to use the EPH CP4i and no weather comp

Agree with cp4i nice bit of kit with a 5 year warranty.
We have a number fitted to ideal vogue's with weather compensation works really well.

 

[fix]

I actually had an EPH fitted to an old boiler and it wasn't bad, the Ember app wasn't the best though so decided to try something different...

 

[vulcancontinental]

Don't use Hive apparently, their OT doesn't control DHW temp. I haven't first hand knowledge on this but it was passed to me.

EPH are good for OT but I haven't used it with WC, I think the boiler WC takes preference.

I use WC and time it for two settings, comfort and setback.

Use a simple external timer to switch between temperatures. You can use the embedded timer in the Pinnacle but it's not intuitive.

I can post a long video on how to set the WC up if required, once done simply let it run.