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System and Conventional Condensing Boilers - Clarification Please
Hi all
Looking at a replacement boiler prior to kitchen refurb and I see that Worcester Bosch do HE28 and HE29. The difference is, one is "system" boiler containing pump and the other "conventional" boiler without pump. Both I believe are condensing units so presumably meet the recent required standards. BUT The system boiler appears to be used on sealed systems only! Can someone explain why please? I am improving (I hope) a 1970s build house. Is it likely that the system will be "sealable". What would make it unsuitable for sealing? I currently have Gloworm Spacesaver 50 and pumped S plan piping (with some naff modifications). I am replacing all rads with Drayton TRVs and Pegler Terrier lockshields (as I renovate each room). Any recommendations on controls for whichever boiler is recommended? TIA Phil |
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