On Tue, 10 Jul 2007 17:21:25 +0100, The Natural Philosopher wrote:

Mike Barnard wrote:
Firstly, my thanks to all who have helped, argued, discussed and
generally nosed around in my quest for the perfect CH system for my
little house. With your help I designed a system, bought the bits and
have now installed the wet bits. (Including a weekend without hot
water as I ran out of pipe on a Friday night). I was chuffed to bits
when I pressurised it for the first time and only had one leak in a
copper elbow that was a bugger to get to behind a joist.

BUT. I think I am going to hang myself. As soon as I walk away from
the keyboard. Sigh.

My Worcester Bosch boiler cannot be activated by external zone
controls. So says the techie's at WB themselves. I've spent hours
and hours and a couple of hundred pounds doing the zone thing. I tried
to sort the controls today and couldn't figure out how to connect them
to the boiler. So I called WB tech support and my boiler (which is
only 2 years old FFS!" cannot take it. No way. "Can't I bodge a
control in somewhere?" Nope. The text display controls it all. There
is no single 'lightitupnow' connection in there.

So after the work I'm stuffed. The zone valves are in manual open
mode so the system still works as a normal un zoned system, so all is
not lost. But the zone idea is out of the window now.

The controllers and stuff will be going back to the supplier in the
morning, no problem there. They're still in their box's unused. The
pipe work for the two zones will stay in place as ONE day if this
house lasts long enough, it may need a new boiler and the new heating
engineer can marvel at the readymade pipe work.

If left unused the two port valves will probably fur up, so I may as
well take them out and try to sell them on ebay or in the local rag
and get at least a few quid back from them.

Don't you just HATE days like this? Excuse me... hangs head out of
window

"AAAAAAARRRRRRGGGGGGGHHHHHHHHHHHHHHHHHHHHHHHHHHHHH hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.....
gurgle"

OK, You may all laugh hysterically now. I'll have my coat please.
It's that straight jacket over there...........

Hold on a second.

There is ALWAYS a way.

Lets have more detail before you despair..

Do you have a wiring diag for the boiler?

Agreed.
There must be a a way to connect a wall themostat to the combi.
That is the way you drive the zoning.
Some WB models have all the connection for zoning builtin to save you
useing a wiring centre (such as the 24 SBi) that's probably what threw the
WB techies.

AL you need to do is connect the all the grey wires to one of the
thermostat terminals and all the orange wires to the other thermostat
terminal.






--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html
Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html
Gas Fitting Standards Docs he http://www.makewrite.demon.co.uk/GasFittingStandards