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DX3L
Series
Figure 3.21
•
Rooftop Venting - Side View
Roof*
Double-Wall B Vent
Heater
*Consult the NFPA ANSI Z223.1 Gas Vent Termination criteria if roof pitch exceeds 9:12
3.0
24 in.
Min.*
#8 Sheet Metal Screws (field supplied)
31
Installation
•
Vertical Venting (Category I)
Vent Cap
Storm Collar
Adjustable Roof Flashing
1 in. Minimum Clearance -
Use Attic Insulation Shield
(Field Supplied)
Fire Stop Spacer
B to C Adapter
Clean Out Tee Fitting
Clean Out Cap
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