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VII. Venting (continued)
7. If window and/or air inlet is within 4 ft. (1.2 m)
of an inside corner, maintain at least 6 ft. (1.8 m)
spacing between terminal and adjoining wall of
inside corner.
8. Locate bottom of vent terminal at least 7 ft. (2.1 m)
above a public walkway.
9. Maintain minimum clearance of at least 4 ft. (1.2
m) [3 ft. (900 mm)in Canada] horizontally between
vent terminal and gas meters, electric meters,
regulators, and relief equipment. Do not install vent
terminal above or below this equipment.
10. Do not locate the vent terminal under decks or
similar structures.
11. Top of terminal must be at least 24 in. (600
mm) below ventilated eaves, soffits, and other
overhangs. In no case may the overhang exceed
48 in. (1200 mm).
authority having jurisdiction and local experience,
the terminal may be located closer to unventilated
soffits. The minimum vertical separation depends
upon the depth of the soffit.
12. For multiple appliance installations with vertical
roof terminals, separate vent pipes may be piped
through a common conduit or chase so that
one roof penetration may be made. Maintain
recommended separations of terminations after
penetration.
AMP 400-1000L I&O Manual
Where permitted by the
Figure 8: Vent Terminal Clearances
13. Maintain minimum 24 in. (610 mm) horizontal
spacing between vent terminal and a building
corner.
14. Under certain conditions, water in the flue gas may
condense, and possibly freeze, on objects around
the terminal including on the structure itself. If
these objects are subject to damage by flue gas
condensate, they should be moved or protected.
15. If possible, install the vent and combustion air
terminals on a wall away from the prevailing
wind. Reliable operation of this product cannot be
guaranteed if terminals are subjected to winds in
excess of 40 mph (64 km/hr).
16. Do not locate combustion air terminal in areas that
might contain combustion air contaminates, such
as near swimming pools.
WARNING
WARNING
Use of cellular core PVC (ASTM F891), cellular core
CPVC, or Radel® (polyphenylsulfone) in non-me-
tallic venting systems is prohibited.
Covering non-metallic vent pipe and fittings with
thermal insulation is prohibited.
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