Thanks, this is what I did. For anyone who searches for a similar question, answer was:
The flue part numbers that you require for the Greenstar 440 Cdi are as follows:
High Level Horizontal Terminal - 7733600048
Flue Adapter - 87186823240
Flue Clamp - 8716116815
1m Extension - 7716191083...
Hi, I am just about to order a 440CDi floorstanding combi boiler but I'm having trouble finding what flue option I need.
I want the flue to:
come out the top of the boiler vertically
1m extension piece
90deg elbow
horizontal flue out through the external wall
The flue options on websites such...