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INSTALLATION REQUIREMENTS
1. Install and secure the vertical vent, gas vent or metal chimney according to manufacturer's
instructions or in accordance with NFPA 54 National Fuel Gas code or applicable local codes. The
termination of the vertical vent or metal chimney MUST be installed in accordance with the height
and roof pitch table (See Figure 1 or Table 1 or refer to NFPA 54 for requirements). These
minimum heights may be used if the vertical gas vent is not less than 8 feet from any vertical wall.
For other installations, the termination shall be not less than 2 feet above the highest point where
the vertical vent passes through the roof and at least 2 feet higher than any portion of a building
within 10 feet.
TABLE 1
ROOF PITCH H (FEET) Y (FEET)
FLAT TO 6/12 1.0 2.0
6/12 TO 7/12 1.25 2.1
7/12 TO 8/12 1.5 2.3
OVER 8/12 TO 9/12 2.0 2.7
OVER 9/12 TO 10/12 2.5 3.0
OVER 10/12 TO 11/12 3.25 3.5
OVER 11/12 TO 14/12 4.0 4.0
OVER 12/12 TO 14/12 5.0 4.3
OVER 14/12 TO 16/12 6.0 4.5
OVER 16/12 TO 18/12 7.0 4.5
OVER 18/12 TO 20/12 7.5 4.5
OVER 20/12 TO 21/12 8.0 4.5
2. The vent termination MUST be at least 4 feet from or 1 foot above any window or opening into the
building.
3. The Starkap™ is sized to the same diameter as the vent inside diameter (Example: 3" vent uses
a SK-3 Starkap™).
Figure 1