Enerzone Solution 2.3 Installation And Operation Manual page 55

Note that secondary air tubes (B) can be replaced without removing the baffle board (A).
Important Notes:
The air tubes are identified for placement as follows:
Model Type of tube
Solution 2.3 Front ► 30 holes of 0.147"
Middle front ► 30 holes of 0.136''
Middle rear ► 20 holes of 0.128''
Rear ► 15 holes of 0.128''
Solution 2.3 Installation and Operation Manual
55