Andrew snipped-for-privacy@btinternet.com wrote: : On 10/12/2023 21:38, Tim+ wrote: : > <Use-Author-Supplied-Address-Header@[127.1]> wrote: : >> At some stage I am going to need a replacement heat exchanger for an elderly : >> but otherwise in GWO Baxi Bermuda 45/4E BBU. : >>
: >> Baxi have confirmed that neither the original part (Baxi part no. 233910, GC : >> no. 193156) or its replacement (Baxi part no. 248436, GC no. 193156, now : >> classified as 'obsolete') are available. : >>
: >> I have checked with many UK heating parts suppliers who stock genuine Baxi : >> parts. None have this part or can get hold of it. : >>
: >> My question is: Are there any third party manufacturers/suppliers, in the UK : >> or abroad, who can supply a compatible part? In the past I'm sure I read : >> that there were Chinese manufacturers of Baxi compatible parts but I have : >> not managed find any references for this particular part. : >>
: >> Many thanks : >> Tom : >>
: >> Ps. Before anyone comments, I know that BBUs are less efficient than modern : >> wall mounted condensing boilers. : >> Pps. The email address in the header is just a spam-trap. : > : > Whilst I can empathise with keeping an old any trusty appliance going, when : > it comes to the Baxi Bermuda I really do think it?s time to thank it for : > its long years of service and sling it in a skip (when it dies). That or : > turn it into an ?installation? in Tate Modern. : > : I slung mine in the local amenity tip metal skip 20 years ago. : 'Sling' needs to be qualified by 'struggled on my own' on account : of its significant weight.
: These cast iron heat exchangers are bullet proof but what fails is : the bolts that hold the two halves together.
: Chap across the road still has his and a few years back was also : looking for a possible new heat exchanger.
: If the property uses class 2 flue blocks then they are more efficient : than believed because the wall of the bedroom above gets the extra : heat from these flue blocks. The houses on my estate had much smaller : radiators in this bedroom compared to the other bedrooms for this reason.
: > Do you plan to replace the heat exchanger yourself? Even if you do manage : > to find a Chinese heat exchanger you might well find it difficult to find a : > fitter who will fit a heat exchanger to such an obsolete boiler. : > : > Tim : > : > : The galvanised metal casing also tends to rot away.
I am curious about the internal plumbing of the HE, not having seen mine for reasons explained above.
appears to be part of the lower cast iron section and the two Boiler Flow outlets part of the upper cast iron section. Are these two sections' water paths joined at both ends where the bolts are, only at one end or along the full length?
Regards Tom.
Ps. The email address in the header is just a spam-trap.