Worcester 30Si change to CDI

[Tommo25]

Ive got a customer who wants the old 30Si combi out and replacing with a new Worcester. Am I right in thinking that the CDI is a pretty straight forward swap in terms of piping? Similar bracket etc? I don’t normally fit Worcester.
I’ve tried to talk them into a viessmann but no luck ..

Thanks

 

[ShaunCorbs]

Yep both the same you might need to change / repipe the prv but all the other are the same

Just the cdi is slightly taller so if horz flue be careful

 

[Scott_D]

The CDI classic is a heavy lump