I have a Baxi Duo Tech 28 HE. According to an online search with the serial number and GC number, I should have a 20-plate heat exchanger. So, I purchased a 20-plate unit. However, when I removed the old part, it appears to have 12-14 plates. Is there any harm in installing a 20-plate exchanger instead of the 12-14 plate one?
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View the thread, titled "Baxi boiler - heat exchanger" which is posted in Boiler Advice Forum on UK Plumbers Forums.
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