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Flow and return when swapping combi.

Joined
16 Jul 2009
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1,092
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Location
Hull
Country
United Kingdom
If swapping a combi does it matter if you swap the flow and return around under the boiler? I'd reverse flow rad. Valves are on the system.
 
trvs might be a problem if they are not bi directional they may sound like a machine gun when trying to shut down if on wrong side
 

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