DIY Forum

 

Ultimate HandymanUltimate Handyman on Pinterest

 

DIY Forum/Home improvement advice forum

 

 

A-Z CONTENTS | DISCLAIMER | DIY VIDEO | HOME | SAFETY FIRST | FORUM RULES

It is currently Mon Oct 15, 2018 6:20 pm
Visit Hilti


Time zone: Europe/London [ DST ]




 

 


Post new topic Reply to topic  [ 5 posts ] 
Author Message
PostPosted: Sun Jul 22, 2018 12:25 pm 
Offline
Senior Member
User avatar

Joined: Tue May 10, 2011 3:43 am
Posts: 2672
Location: North Wales
Has thanked: 64 times
Been thanked: 542 times
Looking for new house, told today central heating split into zones, not a clue why? But also don't know how connected to boiler.

I would guess the micro switches in the zone valves connect to a device which in turn tells boiler to run at 50% with one zone active, and 100% with two zones active, however I can't find such a device for sale.

I will admit I made a mistake with this house, I used eTRV heads, but found only way to link with thermostat is with IFTTT with follow commands so all set to same temperature which defeats whole point of programmable heads. Seems I should have used some thing like EvoHome where the thermostat is really a hub which tells the boiler the output required.

I had not realised my boiler is not Opentherm enabled so the clever thermostats have to be made by Bosch and these it seems don't link to eTRV's so had to use a Heath Robinson method. Having made the mistake once, I want to avoid a repeat.

So if the house has zone valves what would one need to do to get full control? Would they need removing?


Share on FacebookShare on TwitterShare on DiggShare on DeliciousShare on Google+
Top
 Profile  
Reply with quote  
PostPosted: Sun Jul 22, 2018 12:31 pm 
Offline
Senior Member

Joined: Sat Sep 01, 2012 7:03 pm
Posts: 7929
Has thanked: 45 times
Been thanked: 1356 times
Don't know if it helps, but I have seen zones used for UFH
Lots of rooms each with own UFH
Each valve is controlled by a room stat in said room

No idea about what the boiler does, I was there for another reason and that was what I saw and was told thats what it does.

_________________
Fret not, a forum is a collection of opinions. Above, are mine.

Which is correct? Metre or Meter? Click the link to find out more.

Working on anything electrical? have you got a multi meter? why not? Would you hit a nail with a shoe?

If gloom had a voice, it would be me. :mrgreen:

:idea1: How to post a picture on this forum Click here


Top
 Profile  
Reply with quote  
PostPosted: Sun Jul 22, 2018 12:32 pm 
Offline
UHM Super Moderator
User avatar

Joined: Fri Jan 27, 2006 10:54 pm
Posts: 3763
Has thanked: 178 times
Been thanked: 614 times
better asked in CH . I'll move it


Top
 Profile  
Reply with quote  
PostPosted: Sun Jul 22, 2018 3:44 pm 
Offline
Senior Member

Joined: Sun Jan 31, 2010 9:21 pm
Posts: 2779
Location: Kent, Land of Apples and PYO
Has thanked: 55 times
Been thanked: 562 times
zone valves are simply a syncro motor attached to a valve body a 2 port valve will have 2 positions open and closed, 3 wires neg, and a positive for each position and power to the motor

it all depend on the zone setup what type of valves/manifold, how many zones and if you want to go wire or wireless with a controller


Top
 Profile  
Reply with quote  
PostPosted: Sun Jul 22, 2018 5:39 pm 
Offline
Senior Member

Joined: Mon Apr 13, 2009 8:03 pm
Posts: 6936
Has thanked: 837 times
Been thanked: 927 times
The boiler flow temperature is the same regardless of how many zone valves are in use/open.

Your boiler would need to support OT and be connected to an OT thermostat to vary the flow temperature depending upon demand and room temperature.

It would also need some means of overriding the OT when there’s a hot water demand, such as Pin 5 on Intergas or a four pipe boiler that has the diverter valve built in it such as the Vaillant new ones

_________________
Dave

www.drlgas.co.uk


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

 

 




Similar topics
   

Time zone: Europe/London [ DST ]


Who is online

Users browsing this forum: PLB and 0 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Visit Solent plastics


 

 

 

News News Site map Site map SitemapIndex SitemapIndex RSS Feed RSS Feed Channel list Channel list
ultimatehandyman privacy policy

Contact

 

Powered by phpBB® Forum Software © phpBB Group

phpBB SEO