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TURBOPOWER 99
WATER HEATER
PV500-12 08/12 11
8.5 Horizontal and Vertical Venting Through a Wall or Roof
Vent terminal locations, clearances, warnings and requirements stated in this manual apply, whether combustion
air comes from the room or is ducted from outdoors.
1. The solid PVC or CPVC vent pipe must be sealed to the wall or roof at the point where it passes through the
wall or roof.
2. The vent must be terminated with the vent termination cap provided by PVI.
3. The vent terminal must have a minimum clearance of 4 feet (1.22 m) horizontally from, and in no case be
located above or below, electric meters, gas meters, regulators and relief equipment.
4. The vent cap shall terminate at least 3 feet (0.91 m) above any forced air inlet within 10 feet (3.05 m).
5. The vent shall terminate at least 4 feet (1.22 m) below, 4 feet (1.22 m) horizontally from or 1 foot (0.3 m)
above any door, window or building air inlet to the building.
6. The vent system shall terminate at least 1 foot (0.3 m) above grade and at least 1 foot (0.3m) above possible
snow accumulation levels and shall terminate at least 7 feet (2.13 m) above grade when located adjacent to
public walkways or gathering areas.
7. To avoid a blocked flue condition, keep the vent cap clear of snow, ice, leaves, debris, etc.
8. The vent must not exit over a public walkway, near soffit vents or crawl space vents or other areas where
condensate or vapor could create a nuisance or hazard or cause property or could be detrimental to the
operation of regulators, relief valves or other equipment.
9. A horizontal vent must extend at least one foot beyond the wall.
10. A horizontal vent terminal must not be installed closer than 3 feet (0.91m) from an inside corner of an L-
shaped structure.
11. A vertical vent should exhaust outside the building at least 2 feet (0.61 m) above the highest point of the roof
within a 10-foot (3.05 m) radius of the termination.
12. The vertical termination must be a minimum of 3 feet (0.91 m) above the point of exit. A vertical termination
less than 10 feet (0.91 m) from a parapet wall must be a minimum of 2 feet (0.61 m) higher than the parapet
wall.
13. Follow all requirements in the “Venting” sections of this manual and other instructions and markings for
venting flue products to the outdoors, obtaining adequate combustion and ventilation air and general
installation instructions.