Replacement Boiler for Rayburn gas

1 Sep 2012
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United Kingdom

I currently have an unvented S-plan system with Rayburn gas boiler (GD80/380G - 24KW/h) and Megaflo hot water cylinder. This all works great but we are thinking of removing the Rayburn and replacing with a different boiler.

Currently there is an external pump and as the Rayburn boiler has overrun, a bypass valve on the primary circuit. All the system boilers I have looked at so far (Baxi, Glo-worm) have boilers with integrated pumps.

Am I right in thinking I should be looking at a system boiler and not a heat-only boiler? If so are there any without integral pumps?

I would be very grateful for any advice on this, and any recommendations as there are very many options.

Many thanks indeed.
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