Opinions/advice required please

bobmedley

Mines a Heatrae Sadia unvented system and here's the blurb;

• Internal air-gap with patented floating baffle
• Strong, Duplex stainless steel construction
• High performance 'coil-in-coil' heat exchanger
• No sacrificial anode (eliminates need for annual inspection)
• Appliance-like plastic-coated outer case
• Patented cold water inlet diffuser minimises mixing of cold and hot water
• Water inlet controls increase flow rates by up to 35%
• Improved performance even at 1 bar
• Every unit tested to 15 bar (217psi)
• 25-year transferable cylinder guarantee
• 5-year guarantee on the coldwater control valve
• 2-year gurantee on all other components
• ½" temperature and pressure relief valve

Look at no. 4 - lots of powerful showers & the house has not blown up yet:cool:

BS2870 is a standard for copper, whilst Heatrae Sadia are stainless steel & much stronger ergo an early copper one probably needs checks, newer steel ones do not.

mute_posting

bobmedley wrote: »

Mines a Heatrae Sadia unvented system and here's the blurb;

• Internal air-gap with patented floating baffle
• Strong, Duplex stainless steel construction
• High performance 'coil-in-coil' heat exchanger
• No sacrificial anode (eliminates need for annual inspection)
• Appliance-like plastic-coated outer case
• Patented cold water inlet diffuser minimises mixing of cold and hot water
• Water inlet controls increase flow rates by up to 35%
• Improved performance even at 1 bar
• Every unit tested to 15 bar (217psi)
• 25-year transferable cylinder guarantee
• 5-year guarantee on the coldwater control valve
• 2-year gurantee on all other components
• ½" temperature and pressure relief valve

Look at no. 4 - lots of powerful showers & the house has not blown up yet:cool:

BS2870 is a standard for copper, whilst Heatrae Sadia are stainless steel & much stronger ergo an early copper one probably needs checks, newer steel ones do not.

I stand corrected!

However, annual inspection or not, being unvented, it still needs notifying to building control at the point of installation and fitting by a registered person (both of which could add to the bill)..

Building Regulations


The installation of an unvented hot water system must comply with both the Water Regulations and the Building Regulations. You must also notify your local Building Control Office, who will want to ascertain who will be installing the system. The system must be installed by a competent person, in other words someone who is qualified for the installation of unvented hot water cylinders.

In the UK this means training and assessment by a recognised training body with cards being issued by organisations such as the Institute of Plumbing (IoP) or the Construction Industry Training Board (CITB). This qualification is not part of Corgi and so please make sure that if someone is installing an unvented system they hold the relevant qualification

MP

Canucklehead

Good evening: Ideally, the unvented cylinder would be 'checked' by your CORGI as part of the annual boiler servicing/central heating system inspection.

Canucklehead

amtrakuk

mute_posting wrote: »

I stand corrected!

However, annual inspection or not, being unvented, it still needs notifying to building control at the point of installation and fitting by a registered person (both of which could add to the bill)..



MP

So do I stand corrected. I thought the annual inspection included safety valve inspection/testing. Not just for the Annode. Maybe this is how the Fagor non-vented water heater on ebay gets round the inspection clause. Though the bloke who is selling is says there is no expansion vessel required (perhapse air bubble?) He said it just needs mains connection to the rising main and connection from the output to hot water system and plug it in.

Perhapse a DIY job if thats the case?!

If this is try I maybe interested in it again.... :T

mute_posting

amtrakuk wrote: »

So do I stand corrected. I thought the annual inspection included safety valve inspection/testing. Not just for the Annode. Maybe this is how the Fagor non-vented water heater on ebay gets round the inspection clause. Though the bloke who is selling is says there is no expansion vessel required (perhapse air bubble?) He said it just needs mains connection to the rising main and connection from the output to hot water system and plug it in.

Perhapse a DIY job if thats the case?!

If this is try I maybe interested in it again.... :T

Can't find it, but IIRC, if it holds less than 15 litres (I think!) it is exempt.

MP

amtrakuk

mute_posting wrote: »

Can't find it, but IIRC, if it holds less than 15 litres (I think!) it is exempt.

MP

heres the ad: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&Item=320261550199&Category=42234&_trksid=p3907.m29

mute_posting

amtrakuk wrote: »

heres the ad: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&Item=320261550199&Category=42234&_trksid=p3907.m29

Perhaps it has the same exemption as the other poster's system?

All I can find out is that they are popular on the continent - weather or not they are approved for UK use I can't determine.

MP

amtrakuk

Thanks.. I have emailed the company, perhapse I can get an answer from them. I cant find anything on the web about their water heaters.

Canucklehead

mute_posting wrote: »

Can't find it, but IIRC, if it holds less than 15 litres (I think!) it is exempt.

MP

Good morning: See Part G Hygiene (G3) Building Regulations (England and Wales) for requirements/exemptions.

HTH

Canucklehead

Bollards

Thanks for your contributions.
We discussed it last night and are slightly leaning towards the Vaillant system (the closed one). However on the quote it says that it will be extra to do a power flush prior to installing the boiler and that although it is recommended by the manufacturers it is only required if the system is particularly clogged up and there is evidence of this being the case. My question is, what evidence would we need to see to know if this is necessary?