State Industries GS6, GSX, GPX manual Per Ft

•The connector must be firmly attached and sealed to prevent it from falling out.

•To aid in removing the connector, a thimble or slip joint may be used.

•The connector must not extend beyond the inner edge of the chimney as it may restrict the space between it and the opposite wall of the chimney

The following figures are examples of vent pipe system installations and may or may not be typical for your specific application. Consult the “National Fuel Gas Code”, NFPA 54, ANSI Z223.1-current edition and the guidelines set forth by prevailing local codes.

LOWEST DISCHARGE OPENING

LISTED VENT CAP

LISTED GAS VENT

LISTED LINED CHIMNEY

SUPPORT STRAP

12

x

*MAINTAIN CLEARANCE

ROOF PITCH IS x/12

SUPPORT STRAP

H (MINIMUM) - MINIMUM HEIGHT FROM ROOF TO LOWEST DISCHARGE OPENING

MAINTAIN

TYPE B DOUBLE

CLEARANCE*

DO NOT EXTEND VENT BEYOND EDGE OF CHIMNEY

VENT

WALL VENT PIPE

**MAINTAIN

SPECIFIED CLEARANCE

VENT CONNECTOR

CONNECTOR

SLOPE UP

1/4 IN. PER FT.

MINIMUM

VERTICAL GAS VENT SYSTEM WITH TYPE B DOUBLE WALL VENT PIPE.

CHIMNEY TERMINATION VENT SYSTEM

Figure 13

Do not reduce the vent to less than the draft hood outlet diameter. Do not terminate the vent connector in a chimney that has not been certified for this purpose. Some local codes may prohibit the termination of vent connectors in a masonry chimney.

Vertical Exhaust Gas Vent: Vertical exhaust gas vents must be installed with U.L. listed type B vent pipe according to the vent manufacturer’s instructions and the terms of its listing.

It must be connected to the water heater’s draft hood by a listed vent connector or by directly originating at the draft hood opening.

Vertical gas vents must terminate with a listed cap or other roof assembly and be installed according to their manufacturer’s instructions.

Gas vents must be supported to prevent damage, joint separation, and maintain clearances to combustible materials.

IMPORTANT: This gas vent must be terminated in a vertical position to facilitate the removal of the burnt gases.

An unused chimney flue or masonry enclosure may be used as a passageway for the installation of a gas vent. NOTE: The chimney flue or masonry enclosure size may be too large to allow proper venting.

Common (combined) venting is allowable with vertical type B vent systems and lined masonry chimneys as long as proper draft for the water heater is established under all conditions of operation. CAUTION: DO NOT common vent this water heater with any power vented appliance.

Figure 14

Consult the table found in the “National Fuel Gas Code”, NFPA 54, ANSI Z223.1-current edition to determine the minimum height from roof to lowest discharge opening.

VENTING THROUGH A CHIMNEY WITH

TYPE B DOUBLE WALL VENT PIPE.

Figure 15

*Maintain vent pipe clearance requirements to local, state and/or the “National Fuel Gas Code”, ANSI Z223.1(NFPA 54)-current edition.

**NFPA 211, Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning Appliances states that these chimneys are intended to be installed in accordance with the installation instructions provided with each chimney support assembly. Minimum air space clearance to combustible materials should be maintained as marked on the chimney sections.