Heatilator RBV4236IH Owner's Manual page 14

Vent supports
are per vent
manufacturer's
specifications.
Maximum horizontal run is 50% of
vertical. Horizontal run cannot be
more than 30 ft. (9.14 m).
Figure 5.2 Maximum Horizontal Run
WARNING
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.
14
Metal
Plumbers'
Strap
Heatilator • RBV4236/RBV4842 • 4048-210 Rev K • 02/07
Maximum
horizontal
30 ft (9.14 m)
45°
Elbow
90°
Elbow
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.
Figure 5.3 Maximum Horizontal Run
Offsets exceeding
45° adapt horizontal
limitations
Note: Maximum horizontal
distance is 50% of vertical
vent height.