vented heating to unvented ?

26 Oct 2005
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United Kingdom
Hi all,
please can someone offer some advice on the following,
I currently have vented gas central heating, with a feed & expansion tank in the loft, and would like to change to an unvented system to gain more loft space.
Can I just seal the system by removing and capping the f&e pipes and install an Altecnik expansion vessel kit ?
Will my boiler, a Stelrad/Ideal W2000 be happy with this ?

many thanks
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You can if the Ideal W2000 installation instructions permit it.

Generally, if a boiler is fitted with an inbuilt (eg: at the time of manufacture) separate overheat manually resettable thermostat then it is OK. By separate, I mean it has a user adjustable AND an overheat stat. Can't recall whether a W2000 has one.
The W2000 is getting on a bit anyway. We are pulling quite a few of these out these days. You could put the money for the altecnic kit towards getting a system boiler with the pressure vessel built in. It will be no bigger than the W2000 and be far more gas efficient.

Just a thought

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thanks for the replies.
Looks like I'll have to start pricing up a boiler with a built in pressure vessel.


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