
R O B E R T S
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G O R D O N
S E C T I O N
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V E N T I N G A N D D U C T I N G
pg 23
3) OUTDOOR
1) INDOOR HARSH/CORROSIVE ENVIRONMENTS
2) INDOOR
Vent Cap
Building
Fresh
Air In
Vent
Out
Burner Assembly
4” (10 cm)
Single wall pipe
Heat Exchanger Tubes
Vent
terminal
Building
Vent adapter
Building
Vent Cap
Vent Cap
Heat Exchanger Tubes
Burner Assembly
Vent adapter
(Install with seam down)
OR
To
Atmosphere
4” (10 cm)
Single wall pipe
Burner Assembly
Heat Exchanger Tubes
Vent adapter
Vent adapter
Vent Cap
Figure 21. Venting Options