3 Zone Ch system

[bob_mac]

Hi,

I am trying to redesign my CH system, at the moment I have 3 floors, ground 1st and 2nd. My CH is either on, on all levels or off. I want to be able to switch each level on independantly of each other.

I have a Worcester 28 greenstar boiler an unvented water storage tank a honeywell programmer and one thermostat in the downstairs hall.

What I propose to do is use a Horstmann ChannelPlus H47XL 4 Channel 7 Day Programmer with 3 Hortsmann HRT4-ZW Wireless Room Thermostats and recievers (one for each level) I am going to use Honeywell 4043 valves (as I have them already)

Does anyone forsee a problem with this design or can suggest a better way of doing things? any advice would be greatly appreciatted.

Thanks guys

 

[buckley plumb]

it will involve seperate flows and returns for each zone.splan plus system

 

[bob_mac]

yes each valve will be a flow to each zone and am I correct in saying the returns can all be together?

 

[bob_mac]

yes each valve will be a flow to each zone and am I correct in saying the returns all connect back together?

 

[buckley plumb]

yes each valve will be a flow to each zone and am I correct in saying the returns can all be together?

NO you will get revers circulation look up 3 tee rule

 

[bob_mac]

How do I get round this then? do I need to put a check valve in?

 

[bob_mac]

If I connect my 3 return manifolds into the existing single return going into the storage tank will this be ok or will I still get reverse circulation?

 

[AWheating]

put your bathroom on the living space zone so you bum dont get cold during the day

 

[bob_mac]

put your bathroom on the living space zone so you bum dont get cold during the day

Aaaahhh ok that clears this problem up for me never realised it was so simple, cheers.... now anyone got any sensible suggestions?

 

[buckley plumb]

If I connect my 3 return manifolds into the existing single return going into the storage tank will this be ok or will I still get reverse circulation?

as long as the cyl rtn is last tee on rtn do search on here similar question asked in dec

 

[bob_mac]

ok no worries, cheers for advice

 

[buckley plumb]

Sundial S Plan Plus - Honeywell UK Heating Controls

this may help not the best drawing

 

[bob_mac]

Cheers for that,

Can you tell me why the horstmann controller is the only one I can find that controls more than 2 zones? surely I'm not the only person to want more than two heating zones?

 

[buckley plumb]

Cheers for that,

Can you tell me why the horstmann controller is the only one I can find that controls more than 2 zones? surely I'm not the only person to want more than two heating zones?

use the horstman or just use 2 / 2 channel ones it may be cheaper that way

 

[bob_mac]

I'm not really bothered about cost (within reason) I just want to achieve the best design that I can. Other designs like the Honeywell use programeable thermostats in each zone, I think that would just complicate matters and would be much easier (for my wife lol) if it was all on one programer in the kitchen.

Is my understanding of the other system correct? what do most other people do? I am just trying to research this so that I can get a system that I will be happy with and not wish that I had done differently later on

Cheers

 

[Ray Stafford]

Horstmann have made multichannel programmers for domestic and light commercial applications for years, but I can't remember seeing one from another manufacturer. Basic single and twin channel programmers/programable stats are so cheap that I don't suppose it was worth anyone else tooling up for such a niche market.

 

[buckley plumb]

I'm not really bothered about cost (within reason) I just want to achieve the best design that I can. Other designs like the Honeywell use programeable thermostats in each zone, I think that would just complicate matters and would be much easier (for my wife lol) if it was all on one programer in the kitchen.

Is my understanding of the other system correct? what do most other people do? I am just trying to research this so that I can get a system that I will be happy with and not wish that I had done differently later on

Cheers

i use 2 2 channel programmers because i am tight

 

[bob_mac]

Horstmann have made multichannel programmers for domestic and light commercial applications for years, but I can't remember seeing one from another manufacturer. Basic single and twin channel programmers/programable stats are so cheap that I don't suppose it was worth anyone else tooling up for such a niche market.

I think your right Horstmann is the only supplier with more than 2 channels, but why surely it's not that rare that someone wants more than two heating zones. I no you can use two programers but it doesnt look nice compared to "one box that does all" I can't understand it TBH

 

[bob_mac]

i use 2 2 channel programmers because i am tight

LOL I just get it... maybe it's just me but I really wouldn't want two programmers lol certainly not in this day and age with the advances in electronics in recent years it just seems daft lol

 

[bob_mac]

that should have been "I just don't get it" lol

 

[AWheating]

Aaaahhh ok that clears this problem up for me never realised it was so simple, cheers.... now anyone got any sensible suggestions?

it was a sensible suggestion, if you fit the bathroom on the living zone you dont need to turn a whole zone on to use a warm bathroom.

the most sensible suggestion i have is get help from somebody who knows what he/she is doing when you fit it.

 

[AWheating]

honeywell have no plans to make 3/4 channel as the demand is too low from what ive been told.

 

[Johnnyboy]

On the new builds I do, the bathroom towel rails are all on own circuit with own timer control. Don't cost much more to do.

 

[AWheating]

On the new builds I do, the bathroom towel rails are all on own circuit with own timer control. Don't cost much more to do.

seperate zone with zone valve? what temp control/interlock do you fit?

 

[Johnnyboy]

Sold as extra, from underfloor heating supplier. It's an addition loop on manifold. Keeps UHF pump from getting stuck too. Robbens is the manufacturer.