OK - just had a visit from a plumber who seems like a decent chap
(personal recommendation and he works mostly with copper).

Looking at a Worcester Bosch combi.

But controller?

He's of the opinion that with a bungalow, 1 main zone is sufficient.
he's probably right - the upstairs (will be living room) gets heat from
downstairs - no heating up there right now and it's actually quite warm.

The conservatory will have UFH *and* a Myson wet fan blower - both with
separate control.


He's not a controller fanatic (ie he's not trying to "sell me the fancy
one"). However, I'd like a reasonably smart one with Internet access for
the main house.


So, for the main zone, there's the WB Wave system which has weather
compensation.

Or I could shove something like Nest in which at the back end is treated
like a programmer/main stat.


In either case, I'd have to do a Logical-OR with demand from the
conservatory. The conservatory does not need fancy internet control -
probably be done on a local stat/timer with a manual demand switch on
the fan heater.


Any suggestions?

On 29/10/2014 17:16, Tim Watts wrote:

OK - just had a visit from a plumber who seems like a decent chap
(personal recommendation and he works mostly with copper).

Looking at a Worcester Bosch combi.

But controller?

He's of the opinion that with a bungalow, 1 main zone is sufficient.
he's probably right - the upstairs (will be living room) gets heat from
downstairs - no heating up there right now and it's actually quite warm.

Does that also hold true in the cold bits of the winter?

My place is also a converted bungalow but it definitely needs heating
upstairs (4 beds, 1 bath, 1 ensuite) - however not as much as the
downstairs since its both smaller and better insulated. Hence I put it
on its own zone when doing the big heating refit a couple of years back.

The conservatory will have UFH *and* a Myson wet fan blower - both with
separate control.


He's not a controller fanatic (ie he's not trying to "sell me the fancy
one"). However, I'd like a reasonably smart one with Internet access for
the main house.

Not tried that level of connectivity on mine (yet), so won't comment.

So, for the main zone, there's the WB Wave system which has weather
compensation.

IME its well worth having. This time of year it keeps the heating
ticking along on a very low flow temperature (40 deg or so), and is
seamless - you are not really aware the heating is even on unless you go
touch a rad, and it keeps the temp in the house nice and even without
overheating or cold spots.

Or I could shove something like Nest in which at the back end is treated
like a programmer/main stat.


In either case, I'd have to do a Logical-OR with demand from the
conservatory. The conservatory does not need fancy internet control -
probably be done on a local stat/timer with a manual demand switch on
the fan heater.

You may find some of the manufacturers controls already understand the
concept of more than one zone. With mine I added a box if tricks called
a mixer module:

http://www.vaillantcommercial.co.uk/...0148369_00.pdf

It basically glues a boiler with posh ebus controls onto a three zone (2
heating + 1 DHW) set of traditional controls or to more sophisticated
UFH blending controls.

I have a feeling WB had some similar bits.

Any suggestions?

If you get a boiler with an ebus interface, there are quite a few
projects out there for gluing it to a raspberry pi etc.

--
Cheers,

John.

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On 30/10/14 00:20, John Rumm wrote:

If you get a boiler with an ebus interface, there are quite a few
projects out there for gluing it to a raspberry pi etc.


"ebus" - Thanks John - that is VERY interesting.

It might be worth commissioning the wet/gas with a thick controller than
I can tit around when he's gone. Controllers is definitely something I'm
interested in!

On 30/10/2014 07:22, Tim Watts wrote:
On 30/10/14 00:20, John Rumm wrote:

If you get a boiler with an ebus interface, there are quite a few
projects out there for gluing it to a raspberry pi etc.


"ebus" - Thanks John - that is VERY interesting.

It might be worth commissioning the wet/gas with a thick controller than
I can tit around when he's gone. Controllers is definitely something I'm
interested in!

May be of use:

http://ebus.webhop.org/twiki/pub/EBu...7_V1_6_1_E.pdf


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/