does a fanned combi boiler require an overflow pipe? 
boilers
- Thread starter chris19791627
- Start date
Depends what you mean.
M
mysteryman
It will need a pressure relief [safety] valve discharge pipe plus a condensate drain. These are sometimes combined into one pipe.
Unless it is OV 
what does OV intail?
an overflow pipe will be fine, dont bother with the others as they are not needed. it will cost you nothing to run!
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