SECTION 15657 BREECHINGS, CHIMNEYS, AND STACKS

This spec was part of the Des Plaines, IL River WRF project that bid Feb 26, 2015.


SECTION 15657 BREECHINGS, CHIMNEYS, AND STACKS
PART 1 - GENERAL

1.1 SECTION INCLUDES

A. Single wall vents – Stainless Steel.

1.2 REFERENCES

A. Underwriters Laboratories (UL):

1. UL 441 Standard for Gas Vents

B. National Fire Protection Association (NFPA):

1. NFPA 211 Standard for Chimneys, Fireplaces, Vents and Solid Fuel Burning Appliances

C. American National Standards Institute (ANSI):

1. ANSI Z223.1 Fuel Gas Code

1.3 DESIGN REQUIREMENTS

A. Factory built vents and chimneys used for venting natural draft appliances shall comply with NFPA 211 and be UL listed and labeled.


PART 2 - PRODUCTS

2.1 SINGLE WALL GAS VENTS – (FOR GAS FIRED HEATERS)

A. Fabricate pipe of AL 29-4C stainless steel, tested in compliance with UL 441

B. Provide compatible wall fitting and accessories required for installation, UL labeled.

C. Acceptable Manufacturers: Heat Fab, or equal.


PART 3 - EXECUTION

3.1 GENERAL

A. For gas fired unit heaters, install single wall stainless vent & combustion air from unit up to the connection to combination vent/combustion air vent kits. Utilize stainless on both the vent and the combustion air intake. Vent Kit installation and materials as supplied by manufacturer and/or as per manufacturer’s recommendations.

3.2 INSTALLATION

A. Install in accordance with manufacturer's instructions and UL listing.

B. Install vents of type and materials as recommended by the gas fired heating equipment manufacturer whether addressed in this section or not.

C. Install in accordance with recommendations of ASHRAE - Handbook, Equipment Volume, Chapter "Chimney, Gas, Vent, and Fireplace Systems", and ANSI Z223.1 (NFPA 54).

D. Support vent from building structure, rigidly with suitable ties, braces, hangers and anchors to hold to shape and prevent buckling, and to prevent excess loading on equipment vent is serving.

E. For all gas vents, maintain UL listed minimum clearances from combustibles. Assemble pipe and accessories as required for complete installation.

F. Level and plumb chimney and stacks.

G. Clean breechings, chimneys, and stacks during installation, removing dust and debris.

H. At appliances, provide slip joints permitting removal of appliances without removal or dismantling of breechings, chimneys, or stacks.

3.3 PROTECTION

A. Temporary Closure: At ends of breechings and chimneys, which are not completed or connected to equipment, provide temporary closure that will prevent entrance of dust and debris until installations are completed.


END OF SECTION