Pumped return worcester 18ri

[Jolead]

Hi all

I've got a customer with a kingfisher in a downstairs cupboard with gravity hot water and pumped heating. The cylinder has the vent on the flow to cylinder and cold feed on the return. I plan on installing an 18ri with an s plan kit and wireless cylinder stat. My question is if I pump the flow connection of the boiler and the flow of the cylinder it could pump straight over the vent. The only option I see to get the pump to pull on the cold feed is to pump the return. Anyone ever done this?
Cheers

 

[ShaunCorbs]

Seal it or move the vent

Stnd set up for gravity hot water

 

[Jolead]

Hi Shaun

Guy doesn't want to seal it. Combine the feed and vent in 22 on cylinder return?

 

[ShaunCorbs]

Hi Shaun

Guy doesn't want to seal it. Combine the feed and vent in 22 on cylinder return?

No need to move the vent only option if he doesn’t want to seal it