On Mon, 17 Oct 2005 10:49:49 +0100, Dave Plowman (News) wrote:

However, these only work (IIRC) if you have a two pipe system where
each rad is connected to the boiler flow and return. A single pipe
system where the rads are all in series would need some
modifications.

A single pipe the rads are in series but bypassed by the main single
pipe. Otherwise if you shut anyone rad down your shut the whole system
down... I can't see any reason why you can't fit TRVs to rads in a
single pipe system.

+--
| Rad
| --+
| |
----+-------+---- single pipe

--
Cheers
Dave. pam is missing e-mail