Filter
Top Products
14 Heatilator • RBV4236/RBV4842 • 4048-210 Rev K • 02/07
45°
Elbow
90°
Elbow
Offsets exceeding
45° adapt horizontal
limitations
Maximum
horizontal
30 ft (9.14 m)
Note: Maximum horizontal
distance is 50% of vertical
vent height.
Maximum horizontal run is 50% of
vertical. Horizontal run cannot be
more than 30 ft. (9.14 m).
Vent supports
are per vent
manufacturer’s
specifications.
Metal
Plumbers'
Strap
Figure 5.2 Maximum Horizontal Run
Fire Risk
Explosion Risk
Insulation and other combustibles must not
infringe on clearances.
• ALWAYS maintain specifi ed clearances
around venting and fi restop systems.
• Install fi restops as specifi ed.
Failure to keep insulation or other material
away from vent pipe may cause fi re.
WARNING
Figure 5.3 Maximum Horizontal Run
Note: 46° to 90° elbows are not allowed without a fi xed
glass door. Only 45° elbows or less are allowed. A
straight section is not required before the fi rst elbow.