Auto By-pass position

[ShaunCorbs]

The Boiler is a Worcester Bosch Greenstar 30 CDi Classic System Erp, I can't find anything in the MI's about adjusting the pump speed, but i scan read . i know you can on the i models as i have done this on another installation where there was an issue with pump noise... the external expansion vessel is connected to the CH return, the installer is going back to the job to move the Auto By pass valve tomorrow, i will suggest to him to also move the expansion vessel so that it is tee'd into the return as close to the boiler as possible... thanks for the input Chuck, always good to bounce ideas off other people

Pump has a selector on the side (like the old stnd grunds)

 

[GH77]

Are you sure? ... i'll have a look, it's the erp one, thought they'd changed it ... had a look online using the part number from the mi's as above, but can't find a picture showing the required detail??

 

[ShaunCorbs]

View attachment 30384 Are you sure? . i'll have a look, it's the erp one, thought they'd changed it . had a look online using the part number from the mi's as above, but can't find a picture showing the required detail??

Should be on the left side unless they have changed the cdi to digital display in the front panel?

 

[GH77]

I'll have to look further into it to be honest, but cheers for the steer Shaun

 

[king of pipes]

I think you are on the right track GH77 I would advise to do as you stated move the bypass where you put the x and make sure the vessel is tapped into the return with a free path back to the boiler cheers kop.