Connecting The Air Supply (For Direct Vent Operations); Installing The Wall Exit For Air Supply Pipe - Buderus Logano plus GB312 Applications Manual

GB312 Applications Manual
5.1 Connecting the air supply (for direct vent
operations)
We recommend that the air supply pipe
diameter matches the flue pipe diameter.
Boiler rat- Required air supply
ing volumetric flow rate
3
[ft /min]
9 0 - 4 9 5
120 - 4 95
1 6 0 - 5 1 3 0
200 - 6 160
2 4 0 - 7 1 9 0
280 - 8 220
Tab.9 Air supply volumetric flow rate/Air supply pipe
diameter
10 Min
Fig. 9 Vertical flue system
1 Roof penetration
2 Fire protection collar
3 Fastening the flue pipe
4 Flue pipe adaptor (available separately)
Recommended air supply
pipe diameter
[inches]
5
6
6
8
8
8
1
2
3
3
4
7 747 010 720-14.2RS
Fig. 10 Connecting the air supply for balanced flue
operation
1 Screw
2 Cover plate
Use a 90° elbow for the combustion air inlet
at the entrance to the boiler to avoid an
interference with the gas connection.

5.2 Installing the wall exit for air supply pipe

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