Which boiler (oil) for sealed system with Megaflow?

[gasman2008]

I'm a complete novice so please be gentle...

I have a sealed central heating system with a Heatrae Sadia Megaflo cylinder and an old Grandee oil fired boiler which needs replacement.

I am inclined to go with a Worcester Bosch or a Grant boiler (but am open to other recommendations), but I have no idea whether I need to be looking at a specific type of boiler for a sealed system or whether conventional boilers are suitable without buying some kind of conversion kit. I have also read about 'system boilers' - do I need one of these for a sealed system or are these unrelated?

I keep reading about a pressure gauge on the boiler itself (which we don't seem to have at the moment on the Grandee), but there is already a pressure gauge attached to the expansion vessel next to the cylinder in the airing cupboard - isn't this the same thing?

Would the Worcester Greenstar Camray Utility 18/25 suit my system?
http://www.worcester-bosch.co.uk/homeowner/products/oil-boilers/greenstar-camray-utility-1825

Thank you in advance!

 

[Boilerman2]

Go with the Grant they are the premier oil fired boiler on the market at this time

Some installers like Worcester Bosch, BUT Service Engineers HATE them they are horrible to work on and repair too much plastic for an oil fired boiler IMHO! you won't go far wrong with a Grant

 

[Tibbot]

Why does the Grandee need replacing, how old is it?

 

[gasman2008]

10 years old and appears never to have been serviced! Full of soot and dangerous/unserviceable I am told.

 

[Tibbot]

Soot can be removed.

 

[gasman2008]

I see what you're saying, but the servicing guy has refused to service it (and taken no money for assessing it) because he feels it will be dangerous to use regardless of how much soot he can remove - some of the bolts are rusted firmly into place etc.

The question is actually about whether a conventional condensing oil boiler can be used on a sealed system or whether additional kit needs to be fitted.

 

[Boilerman2]

Grandee boilers are C**p i'm not suprised it needs replacing!!

 

[greemyamochop]

Dont get the worcester, their oil boilers are terrible to install and maintain

Grant a definate better choice

 

[Tibbot]

The question is actually about whether a conventional condensing oil boiler can be used on a sealed system or whether additional kit needs to be fitted.

Yes it can, using external vessel, PRV & filling kit. The only requirement is for a manual reset o/heat. Most have them today.