Do I need a larger mains feed?

[theflyingpig]

We're changing from a vented cylinder and ch to mains preassure. Currently the mains feed into house is 20mm, albiet at very high preassure.
The mains feed will go through a prv before going into cylinder.
However, the services out of cylinder will be 22mm, with potentially secondary return in same...

My question : do I need to upgrade my main feed in?

Thanks for any input

 

[CBW]

What has your installer said and or tested?

 

[dilalio]

We're changing from a vented cylinder and ch to mains preassure. Currently the mains feed into house is 20mm, albiet at very high preassure.
The mains feed will go through a prv before going into cylinder.
However, the services out of cylinder will be 22mm, with potentially secondary return in same...

My question : do I need to upgrade my main feed in?

Thanks for any input

Test flow rate with couple taps open.
Then "ask" supplier to text at their stopcock.

This will give you an idea of performance.

 

[Madrab]

do I need to upgrade my main feed in?

Only if the current supply doesn't have the flow required to satisfy what the new system will require.

As suggested, a dynamic flow and pressure test required to see what's currently available, couple that with what services will be installed and what their demand will be. and your installer should have that info.