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
[edit]Sorry, didn't answer the question - a CM67Z can only handle two zones, and you can only have four CM67Zs bound to a boiler controller, which does limit you to eight zones with this system. The Hometronic system does have quite a few features that the CM-Zone doesn't have, but at quite an increase in cost[/edit]
In terms of install the HR80UK fits on to a range of TRV bodies, that is the wet bit of a TRV, you unscrew and remove the head and the HR80UK is fitted in it's place. Therefore you will need a TRV on each radiator that you want to control using the CM-Zone system. As I was starting from scratch I fitted Honeywell TRVs all round for this purpose so that I didn't have to worry about using the adapters etc.
You will also have to have the HC60NG wired in as a replacement to the room thermostat so that it can call for heat.
There is motor noise from a HR80UK when it's opening or closing, it's actually now just background noise, just another one of those noises a house makes. It's a bit like when you move into a new house, you notice every little noise but after a while they all just fade into the background.
The annoying thing about the HR80UK is the re-adaptation it does every now and again. There is no way to know when it's going to do it, which means it could be in the middle of the night in your babies room just as you've got them to sleep (oh yes, that was a great experience). Re-adaptation is when it checks that what it thinks is full throw of the TRV pin is actually still right. To do this is goes from one extreme to the other and back again at full speed. This is noisy, and there is no way to turn it off, have it timed or anything usefull like that.
In terms of setup (binding the bits together, the CM67Z programmes etc) I would aim to do it yourself. If your not comfortable doing that then I would suggest that the CM-Zone isn't the right system for you as you don't want to be calling someone in everytime you want to alter it slightly. The CM-Zone does appear to be aimed at mainstream householders but I wouldn't think that most of them would be capable of using it correctly.
