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Old 02-21-14, 04:22 PM   #20
BeerGrylls
Lurking Renovator
 
Join Date: Dec 2013
Location: Austria
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Btw I have looked at the size of the current hx for referrence, if anyone interested.
Outdoor about 51 lenghts of 76cm pipes, 3 circuits, pipe is 7.6? mm weird diameter, probably not metric.
Indoor 36 lenghts of 70cm pipes , same od, 4 circuits.

So indoor hx is roughly 2/3 of outdoor hx.
Cheers
F
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