Filling loop pressure testing

[Jamespf1]

Hello,

Just installed all my pipe work for combi boiler. I haven’t connected to the radiators yet.

When pressure testing do I need to connect a flow and return pipe together? I will be pressure testing from the filling loop at the boiler.

Thanks

 

[dilalio]

Pushfit or copper?

 

[Jamespf1]

It’s a mix.

Does the boiler filling loop push waster through the flow and the return pipes? Or do I need to connect one of them together?

Thanks

 

[dilalio]

Well pushfit fittings need to be pressurised quite high (5x working Pressure on some) to get grab rings to bite.

Doubt filling loop will be enough.

To test carcass then join f&r and add a remote pressure testing gauge.

Kit available.

 

[Jamespf1]

Well pushfit fittings need to be pressurised quite high (5x working Pressure on some) to get grab rings to bite.

Doubt filling loop will be enough.

To test carcass then join f&r and add a remote pressure testing gauge.

Kit available.

Thankyou. In future for testing copper work with the filling loop on the boiler. Will this pressurise flow and return? Or would I still need to connect a F&R together? (Providing all rads are off)