Thanks all, will follow instructions. Only one other question? Does it
matter where to start? Top radiator? Or is it not important. Many thanks
again fella's

sploop used his keyboard to write :
Thanks all, will follow instructions. Only one other question? Does it matter
where to start? Top radiator? Or is it not important. Many thanks again
fella's

If air is just trapped in the upper part of the radiators, then it
makes no difference which order you bleed them. Often air will form in
one particular radiator (bathroom in our case) for some weeks after and
it may need repeat bleeding.

Sometimes it is better to bleed with the system (pump) turned off, as
the pumps can cause a negative pressure.

--

Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

In article , sploop
writes
Thanks all, will follow instructions. Only one other question? Does it
matter where to start? Top radiator? Or is it not important. Many thanks
again fella's

For bleeding, start anywhere, for balancing, start with the radiators that
you think will be stealing the most flow, most likely the ones nearest the
boiler and move on to the ones furthest away. Remember it's an iterative
process as the changes you make as you go round will affect the balance
of radiators you have just changed.
--
fred
Plusnet - I hope you like vanilla

In an earlier contribution to this discussion,
fred wrote:

In article , sploop
writes
Thanks all, will follow instructions. Only one other question? Does
it matter where to start? Top radiator? Or is it not important. Many
thanks again fella's

For bleeding, start anywhere, for balancing, start with the radiators
that you think will be stealing the most flow, most likely the ones
nearest the boiler and move on to the ones furthest away. Remember
it's an iterative process as the changes you make as you go round
will affect the balance of radiators you have just changed.

For balancing, quickly go round all the rads with your IR thermometer, and
note the flow and return temperature of each one. Then start turning the
lockshields down on the rads with the smallest temperature *drop*. Remember,
you're aiming to get the same drop on all of them - and you do this by
restricting the flow through the rads with too low a drop.
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!

In article , Roger Mills
writes

For balancing, quickly go round all the rads with your IR thermometer, and
note the flow and return temperature of each one. Then start turning the
lockshields down on the rads with the smallest temperature *drop*. Remember,
you're aiming to get the same drop on all of them - and you do this by
restricting the flow through the rads with too low a drop.

A good summary, I may borrow that ;-)

Although I do use the British Standard hand for the first pass.
--
fred
Plusnet - I hope you like vanilla

In an earlier contribution to this discussion,
fred wrote:

In article , Roger Mills
writes

For balancing, quickly go round all the rads with your IR
thermometer, and note the flow and return temperature of each one.
Then start turning the lockshields down on the rads with the
smallest temperature *drop*. Remember, you're aiming to get the same
drop on all of them - and you do this by restricting the flow
through the rads with too low a drop.

A good summary, I may borrow that ;-)

Thank you - feel free!

It's a good practical method which always works without needing to carry out
any complex analysis of the system.
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!