UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions.

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Default Unvented cylinders DIY installation

Anyone in Scotland installed their own?

Looking at
http://www.sbsa.gov.uk/tech_handbook...tic%202009.pdf
doesn't seem to include any words indicating that it *must* be installed
professionally.

From section 4.9.1
Quote:
Competence of installers

This might include current membership of a registration scheme operated by
a recognised professional body. This could include those administered by the
Scottish and Northern Ireland Plumbing Employers Federation (SNIPEF) and
the Construction Industry Training Board (CITB) or an equivalent body.

The following points should be noted in relation to installation of an
unvented hot water storage system:

.. the installer should be a competent person and, on completion, the
labelling of the installation should identify the installer;

.. the installed system should be meet the recommendations of BS 7206:
1990 or be the subject of an approval by a notified body and incorporate

the safety devices outlined in clause 4.9.2 ;

.. certification of the unit or package should be recorded by permanent
marking and a warning label which should be visible after installation. A
comprehensive installation/user manual should be supplied;

.. the tundish and discharge pipework should be correctly located and fitted
by the installer and the final discharge point should be visible and safely
positioned where there is no risk from hot water discharge.

The operation of the system under discharge conditions should be tested
Leaving aside the advisability of DIY installation, is there anything that
actually precludes a DIY installation by a competant person?

Tim




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"Tim Downie" wrote in message
...
Anyone in Scotland installed their own?

Looking at
http://www.sbsa.gov.uk/tech_handbook...tic%202009.pdf
doesn't seem to include any words indicating that it *must* be installed
professionally.

From section 4.9.1
Quote:
Competence of installers

This might include current membership of a registration scheme operated by
a recognised professional body. This could include those administered by
the
Scottish and Northern Ireland Plumbing Employers Federation (SNIPEF) and
the Construction Industry Training Board (CITB) or an equivalent body.

The following points should be noted in relation to installation of an
unvented hot water storage system:

. the installer should be a competent person and, on completion, the
labelling of the installation should identify the installer;

. the installed system should be meet the recommendations of BS 7206:
1990 or be the subject of an approval by a notified body and incorporate

the safety devices outlined in clause 4.9.2 ;

. certification of the unit or package should be recorded by permanent
marking and a warning label which should be visible after installation. A
comprehensive installation/user manual should be supplied;

. the tundish and discharge pipework should be correctly located and
fitted
by the installer and the final discharge point should be visible and
safely
positioned where there is no risk from hot water discharge.

The operation of the system under discharge conditions should be tested

Leaving aside the advisability of DIY installation, is there anything that
actually precludes a DIY installation by a competant person?

Tim


G3:
http://www.opsi.gov.uk/si/si2000/20002531.htm

"Requirement G3 does not apply to -


(a) a hot water storage system that has a storage vessel with a capacity
of 15 litres or less;

(b) a system providing space heating only;

(c) a system which heats or stores water for the purposes only of an
industrial process."

Your link was non-domestci.

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Doctor Drivel wrote:

G3:
http://www.opsi.gov.uk/si/si2000/20002531.htm

I think you'll find that article refers to England and Wales.


Your link was non-domestci.


True. Here's the right link (for Scotland).

http://www.sbsa.gov.uk/tech_handbook...estic_2008.pdf

Says the same thing though so it would seem that DIY is theoretically
possible.

Tim


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"Tim Downie" wrote in message
...
Doctor Drivel wrote:

G3:
http://www.opsi.gov.uk/si/si2000/20002531.htm

I think you'll find that article refers to England and Wales.


Your link was non-domestci.


True. Here's the right link (for Scotland).

http://www.sbsa.gov.uk/tech_handbook...estic_2008.pdf

Says the same thing though so it would seem that DIY is theoretically
possible.


Another document clearly states DIY is out.

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Default Unvented cylinders DIY installation

Doctor Drivel wrote:
"Tim Downie" wrote in message
...
Doctor Drivel wrote:

G3:
http://www.opsi.gov.uk/si/si2000/20002531.htm

I think you'll find that article refers to England and Wales.


Your link was non-domestci.


True. Here's the right link (for Scotland).

http://www.sbsa.gov.uk/tech_handbook...estic_2008.pdf

Says the same thing though so it would seem that DIY is theoretically
possible.


Another document clearly states DIY is out.


Where?

You've said it's possible with BCO checking in another post. You seem a bit
confused.

Tim




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"Tim Downie" wrote in message
...
Doctor Drivel wrote:
"Tim Downie" wrote in message
...
Doctor Drivel wrote:

G3:
http://www.opsi.gov.uk/si/si2000/20002531.htm

I think you'll find that article refers to England and Wales.


Your link was non-domestci.

True. Here's the right link (for Scotland).

http://www.sbsa.gov.uk/tech_handbook...estic_2008.pdf

Says the same thing though so it would seem that DIY is theoretically
possible.


Another document clearly states DIY is out.


Where?

You've said it's possible with BCO checking in another post. You seem a
bit confused.


That is not DIY as such. You pay for the BCO, which is not cheap. Many
BCO's do not do it and farm it out to an approved man, as they do with Part
P in electric. You may as well pipe up the cylinder, and remove it. Then
get an approved man to connect, fill and test. I see no reason why a DIYer
can't do the lot as long as it is not filled up with water, then get an
approved man to fill and test and sign off.

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In article , Doctor Drivel wrote:

G3:
http://www.opsi.gov.uk/si/si2000/20002531.htm

"Requirement G3 does not apply to -

(a) a hot water storage system that has a storage vessel with a capacity
of 15 litres or less;


Interesting potential loophole in that it doesn't say has _only_ a storage
vessel with a capacity of 15 litres of less.....
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On Tue, 24 Feb 2009 19:08:38 +0000, Alan Braggins wrote:

In article , Doctor Drivel wrote:

G3:
http://www.opsi.gov.uk/si/si2000/20002531.htm

"Requirement G3 does not apply to -

(a) a hot water storage system that has a storage vessel with a
capacity
of 15 litres or less;


Interesting potential loophole in that it doesn't say has _only_ a
storage vessel with a capacity of 15 litres of less.....


Are you think that if you install half a dozen 15 litre units in parallel
then you can get around the rules 8-).

The intention of the rule is to separate out the smaller unvented
cylinders usually electrically heated and intended for single point
usage.



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"Ed Sirett" wrote in message
...
On Tue, 24 Feb 2009 19:08:38 +0000, Alan Braggins wrote:

In article , Doctor Drivel wrote:

G3:
http://www.opsi.gov.uk/si/si2000/20002531.htm

"Requirement G3 does not apply to -

(a) a hot water storage system that has a storage vessel with a
capacity
of 15 litres or less;


Interesting potential loophole in that it doesn't say has _only_ a
storage vessel with a capacity of 15 litres of less.....


Are you think that if you install half a dozen 15 litre units in parallel
then you can get around the rules 8-).

The intention of the rule is to separate out the smaller unvented
cylinders usually electrically heated and intended for single point
usage.


He can fit a number of 15 litre units and DIY it. But why, when he can fit
a vented heat bank and DIY that.

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Default Unvented cylinders DIY installation

In article , Doctor Drivel wrote:
"Ed Sirett" wrote in message
On Tue, 24 Feb 2009 19:08:38 +0000, Alan Braggins wrote:

In article , Doctor Drivel wrote:

G3:
http://www.opsi.gov.uk/si/si2000/20002531.htm

"Requirement G3 does not apply to -

(a) a hot water storage system that has a storage vessel with a
capacity
of 15 litres or less;

Interesting potential loophole in that it doesn't say has _only_ a
storage vessel with a capacity of 15 litres of less.....


Are you think that if you install half a dozen 15 litre units in parallel
then you can get around the rules 8-).

The intention of the rule is to separate out the smaller unvented
cylinders usually electrically heated and intended for single point
usage.


He can fit a number of 15 litre units and DIY it. But why, when he can fit
a vented heat bank and DIY that.


_As worded_ it would appear you could fit a 15 litre unit and a 300 litre
unit, and the result would be a system that has a storage vessel with a
capacity of 15 litres or less. That doesn't make it a good idea.

But tell me more about the servicing requirements. When Nu-Heat replaced
my failed vented heat bank with an unvented one because they didn't do
vented ones any more, no servicing requirement was mentioned.


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