Rheem GHE80SS - Page 20

20
Figure 13. Typical Vertical Direct Vent System Installation
Installation
24 in. (61 cm) Min.
Combustion Air-Inlet
Terminal
Exhaust Vent
Terminal
-B-
-A-
-B-
d .008
d .010
"D"
Min. 18 in. (46 cm) above Roof
Min. 12 in. (30.5 cm) above anticipated
snow level
Max. 24 in. (61 cm) above roof without
additional support)
Terminals with 1/2 in.
(1.3 cm) Mesh
Protective Screen
Elbow
Short Piece of Pipe
"D"
Combustion Air-Inlet
"D"
Alternate vertical venting with exhaust vent
turned down - preferred for cold climates.
Terminals spacing for horizontal or vertical venting.
Exhaust Vent
24" (61 CM) Min
(Support required).
90° Intake Terminal
Support Bracket
Water Heater
Floor
Straight Exhaust Terminal
"D"