Honeywell Evohome help

[CChris]

Hi,

New to the forum and Ive found it while looking for information or assistance with regard to my home central heating/hot water issues.

In short, we have had a rather large extension put on our house, which while we were at it, we had the whole heating system renewed as part of the existing house was an atiquated one pipe system. We are now looking for a suitable control for this system. It was discussed with the plumber and electrician at the start of the project that some form of wireless station would be useful if we need to turn on/off heating or hot water when we are in different parts of the home - either playing with the kids in the playroom or entertaining in the kitchen etc..

However, now we come to the final part of wiring the system up, the electrician and plumber are in disagreement as to whether we can actually have the control we want, and I think they may be into territory where they havent got that much experience if Im honest, good though they have been throughout the project. So ive started doing some digging myself and think that the Honeywell evo may be able to assist.


The system:

We have an unvented heating system, hot water cylinder and hot water loop.
There are two boilers, acting together (one fires up to assist the other if it cant cope - advised to change which is the primary every now and then to spread the load)
We have two underfloor heating zones controlled by thermostats in each and fed by a single manifold.
All radiators have TRV's
We have two wall mounted stats, one upstairs, one downstairs. How useful these would be in dictating temperature for the whole each of those is debateable given the size of the house now.

We have 24 individual areas (though Im sure some of these could be combined), 29 radiators and the 2 underfloor heating areas.

Boilers, tank etc all in the garage.


Im in the process of creating a couple of pdf's from the plans to show the layout of the house so this may help.

Though of course if there is an experienced Honeywell installer local to me that wants to come and look at this job first hand, feel free to let me know.

Can the EvoHome cope with this and do you have any advice? My electrician seems to think that the underfloor heating being two zones from a single manifold is throwing a spanner in the works, though I dont think he has worked much with nest/hive/evohome systems as he was just reading about them yesterday when I spoke to him.

Thanks in advance, Ill try and post the pdf's asap as I appreciate its a bit vague without the layout.

 

[CChris]

Layouts now attached if this helps.

View attachment Upstairs Layout.pdf
View attachment Downstairs Layout.pdf

 

[kris]

Not 100percent sure mate. I've fitted the evo home kit only once and it was purely for a medium sized house with only radiators but if you had to you could use a couple different seperate control systems to govern the whole system.
I was sure the evo kit did up to 12 zones and hot water so each Rad a zone unless u split it to a 3 room area.

 

[Stanios]

Hi Chris, Ive put in evo home several times and it is more than capable of providing you with complete controll over heating and hot water in your house.
First of all evohome has a central hub that can have up to 12 stats linked, this includes cylinder stat for hot water and remote controlled radiator thermostatic valve.

From the sound of it you can benefit from having additional areas. If you are having work done on your central heating system you can incorporate new motorised valves to zone off desired areas of the house. Once they are in a roomstat can be installed which talks to evohome hub as well. Again you can have up to 12 of those. Alternatively with evohome you can buy their radiator valves which will enable you to controll a radiator that valve is fitted to.

With regards to your underfloor heating its simple, your existing two stats will need to be replaced with evohome stats which will again communicate with the central hub enabling you to see and controll the temparetures of each zone as well as set programs. The fact that you have one manifold is irrelevant since its the actuators on the manifold that controll various zones.

I would find a competent installer specifically for this job. You can try honeywell's installer here Find An Installer - Honeywell UK Heating Controls

 

[Masood]

Evohome will easily do what you require. Although a single base controller can only provide 12 "zones", you can cascade up to 8 controllers so if you wanted to have 29 separate areas, you could.

Where are you located? This is bread and butter stuff to a trained and experienced Evohome installer..

 

[CChris]

Thanks all.

I was fairly sure the kit could do what I wanted. I'm in Chesterfield, have a local heating engineer coming to have a look today. They have worked on our office building and are a honeywell connected specialist.

The only area that really needs investigation is the underfloor heating manifold. It controls two zones of heating, but it's via multiple separate runs of pipe to enable even warm up.