On 28/09/2011 06:46, harry wrote:
On Sep 27, 5:14 pm, Adrian wrote:
On 27/09/2011 17:02, charles wrote:





In article
, harry
wrote:
On Sep 27, 4:36 pm, wrote:
In , Rob
wrote:

On 27-09-2011 16:23, Jonathan wrote:
On Sep 27, 2:34 pm, wrote: No free solar
heating.

Jonathan
Care to explain further? Vented tank will have a solar coil and
unvented tank will also have a solar coil. They are both compatible
with a solar thermal system. Probably have a 20 tube 58mm diameter
panel installed. Once installed the water heating will be free,
unless I will be getting a bill from Mr Sun for absorbed radiation?

interesting thing I noticed last winter. While all the other houses
had thick snow on the roof, those with solar water heating panels had
virtually none, since the system appeared to work backwards. (taking
heat from the house and warming the outside)

I don't think so.

Yes, it happened. Unfortunately, I was on my local Christmas card delivery
and didn't have a camera with me. The problem affected 5 new-build houses
which were intended to be very energy saving.

On a solar DHW install we did at the last house, the controller had an
'anti-freeze' option which would run the circulating pump when the panel
temperature dropped below a certain preset level (think it was -3c by
default).
The logic was that it was better to 'waste' some heat from the DHW
cylinder than to replace a frozen/burst collector...
Maybe that's what you were seeing...?

Adrian- Hide quoted text -

- Show quoted text -

It's normal to have the circuit filled with anti-freeze solution, as
is mine, or to have it drain down when the pump is not running.
The idea of running it while cold is ridiculous.
http://www.navitron.org.uk/product_d...ID=65&catID=76

Fascinating - a link to 5l of antifreeze - I am forever in your debt.

Tell you what, Harry - you clearly know everything about everything,
and you have a desperate need to prove it.
Thermomax, who made my controller and have been making controllers for
years, don't know as much as you do.
The company who specced & commissioned my system back in the UK don't
know as much as you do.
The reference online that I gave is clearly wrong because it doesn't
agree with the accepted wisdom in Harryworld

You just carry on.... there's no point in arguing with you.

Adrian

On Sep 28, 7:57*am, Adrian Brentnall wrote:
On 28/09/2011 06:46, harry wrote:





On Sep 27, 5:14 pm, Adrian *wrote:
On 27/09/2011 17:02, charles wrote:

In article
, harry
* *wrote:
On Sep 27, 4:36 pm, * *wrote:
In , * *Rob
* *wrote:

On 27-09-2011 16:23, Jonathan wrote:
On Sep 27, 2:34 pm, * * wrote: No free solar
heating.

Jonathan
Care to explain further? Vented tank will have a solar coil and
unvented tank will also have a solar coil. They are both compatible
with a solar thermal system. Probably have a 20 tube 58mm diameter
panel installed. Once installed the water heating will be free,
unless I will be getting a bill from Mr Sun for absorbed radiation?

interesting thing I noticed last winter. *While all the other houses
had thick snow on the roof, those with solar water heating panels had
virtually none, since the system appeared to work backwards. (taking
heat from the house and warming the outside)

I don't think so.

Yes, it happened. Unfortunately, I was on my local Christmas card delivery
and didn't have a camera with me. *The problem affected 5 new-build houses
which were intended to be very energy saving.

On a solar DHW install we did at the last house, the controller had an
'anti-freeze' option which would run the circulating pump when the panel
temperature dropped below a certain preset level (think it was -3c by
default).
The logic was that it was better to 'waste' some heat from the DHW
cylinder than to replace a frozen/burst collector...
Maybe that's what you were seeing...?

Adrian- Hide quoted text -

- Show quoted text -

It's normal to have the circuit filled with anti-freeze solution, as
is mine, or to have it drain down when the pump is not running.
The idea of running it while cold is ridiculous.
http://www.navitron.org.uk/product_d...ID=65&catID=76

Fascinating - a link to 5l of antifreeze - I am forever in your debt.

Tell you what, Harry - you clearly know everything about everything,
and you have a desperate need to prove it.
Thermomax, who made my controller and have been making controllers for
years, don't know as much as you do.
The company who specced & commissioned my system back in the UK don't
know as much as you do.
The reference online that I gave is clearly wrong because it doesn't
agree with the accepted wisdom in Harryworld

You just carry on.... there's no point in arguing with you.

Adrian- Hide quoted text -

- Show quoted text -

Well I've been in engineering for nearly fifty years.

You haven't given good reason for warming the outdoors.
Several people here have given good reason not to.

"Adrian Brentnall" wrote in message
...

Tell you what, Harry - you clearly know everything about everything,
and you have a desperate need to prove it.
Thermomax, who made my controller and have been making controllers for
years, don't know as much as you do.
The company who specced & commissioned my system back in the UK don't know
as much as you do.

I would have to agree with you.. the UK is not an area of occasional
freezing and they shouldn't spec a system that needs heat to stop it
freezing.
However strange it may be it does look like harry knows more than the
installers.
Probably not Thermomax as they do state occasional freezing.