Baxi Ecogen 24/1.0 Installation & Servicing Instructions Manual page 27

8.7 Flue Dimensions
The standard horizontal telescopic flue kit allows for lengths between 315mm and 500mm from elbow to terminal (Fig. 19).
The maximum permissible equivalent horizontal flue length is: 5 metres
Fig. 19
Fig. 20
Fig. 21
8.8 Flue Trim
1. The rubber flue trim supplied may be fitted to either the outside wall or on the inner wall of installation.
8.9 Terminal Guard (Fig. 20)