Honeywell CM zone system

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Hi,

My house is still either too hot or too cold... and I don't like heating the whole house especially when not all the rooms are occupied.... hence I am looking at something like the Honeywell CM zone system.

I have 21 radiators and a floor standing Potterton boiler with gravity system see link below;

http://www.diynot.com/forums/viewtopic.php?p=528075#528075

Does anyone have the Honeywell CM zone system installed or have any experience of it?

Also will it fit into my current system..?

Thanks

Freshy
 
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If I was you I would stop ****ing money up the wall with this whole heap of rubbish and invest the money you are trying to waste making it controlable and efficient on a decent system and boiler which is controlable and efficient!
40 pence of every pound you are burning is being wasted at least!
 
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"40 pence of every pound" are you serious?

I know the boiler system is old but thought it was bullet proof...

Is there boiler system you would recommend?

Thanks

Freshy
 
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If you have an old potterton on a gravity primary system then it will probably be around 60-65% efficient at best, hence the 'wasting 40p in every pound.

Modern 'A' rated condensing boilers have to be at least 90% efficient, usually about 91 or 92% so only 'waste' about 8 or 9p per pound spent on gas.
 
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Of course your CP125 or 150 boiler could (should) be retained, it just needs to be controlled effectively. Get some decent advice on zoning during an on-site survey. You then have to make a choice between spending a little (relatively!) on a fix, or spending a great deal of money, time, disruption, dust, etc. etc. on a new boiler. It'll take you years to get back what you might save on your gas bill. Think of the cost of a boiler man-enough to heat a house the size of yours. Yes, I know we all have to consider our carbon footprint and strive for efficient appliances but at what cost......!

By the way what's your monthly gas cost; I'd be interested 'cos I've got a fully controlled 25 year old Kingfisher C150 gurgling away in my cellar?
 
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Of course your CP125 or 150 boiler could (should) be retained, it just needs to be controlled effectively. Get some decent advice on zoning during an on-site survey. You then have to make a choice between spending a little (relatively!) on a fix, or spending a great deal of money, time, disruption, dust, etc. etc. on a new boiler. It'll take you years to get back what you might save on your gas bill. Think of the cost of a boiler man-enough to heat a house the size of yours. Yes, I know we all have to consider our carbon footprint and strive for efficient appliances but at what cost......!

By the way what's your monthly gas cost; I'd be interested 'cos I've got a fully controlled 25 year old Kingfisher C150 gurgling away in my cellar?
What a suprise that you have this train of thought regarding new boilers when you are running one aswell!
 
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Sorry pannierstan - typo error on my part... CF150 not CP or C.
 
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You could use a Honeywell Hometronic system this will control 26 rads no problem. Can be configured to drive up to 16 zones and other switching devices eg: HW cylinders. Just (finally) completed a 40 rad two DualStream cylinder big house with it last week.

We fit a few of these in larger properties and I have one in my house. It's a specialised job though, not DIY.
 
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Gas bill is £130/mth... :(

I started initially by looking into hometronic but wasn't sure if £3000 (guessitmate) was a worthwhile investment... Not sure how long I will be living in the this house either.

hence the honeywell CM zone which cheaper and can apparently be upgraded to hometronic system later.

When I'm home alone it does not make sense to heat the whole house up! Also I do not have TRV's on my radiators either.

Finally I have a young baby in the house too and I need to do something about the house being too hot or too cold.

I need to make a choice sooner rather than later and would appreciate any advice.

Cheers

Freshy
 
D

Doctor Drivel

Of course your CP125 or 150 boiler could (should) be retained, it just needs to be controlled effectively. Get some decent advice on zoning during an on-site survey. You then have to make a choice between spending a little (relatively!) on a fix, or spending a great deal of money, time, disruption, dust, etc. etc. on a new boiler. It'll take you years to get back what you might save on your gas bill. Think of the cost of a boiler man-enough to heat a house the size of yours. Yes, I know we all have to consider our carbon footprint and strive for efficient appliances but at what cost......!

By the way what's your monthly gas cost; I'd be interested 'cos I've got a fully controlled 25 year old Kingfisher C150 gurgling away in my cellar?
What a suprise that you have this train of thought regarding new boilers when you are running one aswell!

What he wrote was tripe. The bigger the heating system (21 rads) the quicker the payback. Yiu will make back the cost of new efficient boiler in around 3 years to 5 years.

Have new boiler and zone up the system and the bills will come crashing down.
 
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Changed your tune now Dr D t w a t. Usually you tell posters that zones are complicated and unnecessary and they should have 2 Atmos combis.

You just keep proving yourself as a complete t w a t, who no poster should listen to.
 
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I have a seven zone CM-Zone system running using four CM67Z controllers.

All four of the CM67Z units are using the internal termostat to control the radiator valves (HR80UK) in the room they are in, or in the case of the kitchen it is controlling two HC60NG zone controllers (one for a two port valve and one for the underfloor electrics - would have used one but it couldn't happen).

I have this setup so that I can zone off bedrooms to cool at different times (three different bed times in the hours) and to run the heating more localised.

Upto recently I was having problems with the setup but it turns out that they were more to do with a plumbing problem causing the central heating to be very unresponsive, but now that the issue is known and the CH has been rebalanced it's working very well.

The big part of the system is the HR80UK radiator controllers or the HC60NG zone controllers, these would be carried forward onto a Hometronic system if you got one installed in the future. You could then eBay the CM67Zs.

I like it, I probably have far too many zones but I'm a gadget freek....
 
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So am I right in thinking that each CM67Z can only handle 2 Zones?

Hence if you want 6 zones you will need 3 CM67z's?

Also I'm not sure how I want/should decide on zoning...

Zone1: Living Room, Dining Room, ...
Zone2 Kitchen, Study, ...
Zone3: Cloakroom, Hall, Utility, ...
Zone3: Bedrooms
Zone5: Guest Bedrooms
Zone6: Bathrooms

Shopping List

Honeywell CM Zone Pack (1 CM67Z, 1 HC60NG, 6 x HR80UK) £450
16 x HR80UK @ £65 each = £975
2 x CM67Z @ £ 60 each = £120

Grand Total = £1545 + fitting

How much do you think I should be looking at for fitting all this?
Could I possibly fit the TRV's (HR80UK) myself, is it difficult?

Thanks

Freshy
 

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