Monessen Hearth Natural Vent Gas Fireplace SBV400 - Manual (Page 14)

14 62D4036
B-VENT PIPE SIZING
BBV400/400BBV SBV400/400SBV SBV500/500SBV
4" 6" 6"
VENT INSTALLATION
INSTALLATION PLANNING
“B” VENT PIPE
See venting installation instructions provided by the B-Vent manufacturer.
Note: This APPLIANCE MUST BE INSTALLED using “B” vent type pipe that has been listed by a
nationally recognized testing agency.
See B-Vent Pipe Sizing chart for proper elbow offset runs.
Locate chimney center line dimension from a combustible back wall. See Figures 3 and 4, page 9.
• Minimum vertical chimney height - 8'
• Minimum height with two (2) 90° elbows - 8'
• Elbow requirements allow a maximum of two (2) 90° elbows or four (4) 45° elbows per installation.
Note: Two (2) 45° elbows = One (1) 90° elbow
• Horizontal run must never exceed 50% of the height of the vent system.