On Fri, 02 Sep 2005 23:59:20 +0100, Ed Sirett
wrote:

| On Thu, 01 Sep 2005 09:14:38 -0700, Matt Beard wrote:
|
|
| Ed Sirett wrote:
| On Tue, 30 Aug 2005 01:32:45 -0700, Matt Beard wrote:
|
| At a guess I would think that most would cope fine as long as that pipe
| used to short the circuit had a radiator in it. I would think that
| nasty things could happen if it is just a short bit of pipe - it
| wouldn't take much for the boiler firing the heating circuit up to lead
| to superheated water ( 100C).
|
| What boiler is it?
|
| I'd check with the manufacturers, (of course).
|
| To be on the safe side a couple of
| temporary connections to a temporary radiator should probably do the
| trick.
|
|
| I'd be careful if I were you - I gave an almost identical answer and got
| right royally jumped on for giving an answer that was not 100% copper
| bottomed guaranteed to be correct.
|
| I have run a (Vaillant) combi without the rads for a day, just using the
| flow/return isolators shutoff. This allowed me to get the customer's hot
| water back on at the end of the first day's work.
|
| I was very careful to make sure that the air was well out of the boiler,
| it was considerable noiser as there was no where for the small air
| bubble to escape to.
|
| If anyone does this and they damage their nice new boiler then it's
| nothing to do with me.

OK OK. Plans have changed. I am re-routing the central heating pipes
first, so they can be just connected to the new boiler when it arrives.

--
Dave Fawthrop dave hyphenologist co uk
"Intelligent Design?" my knees say *not*.
"Intelligent Design?" my back says *not*.