235100 SF - BREECHINGS CHIMNEYS AND STACKS.DOC

UNIT TRAININGEQUIPMENT SITE ADD/ALT

Copyright 2010 by The American Institute of Architects (AIA)

Exclusively published and distributed by Architectural Computer Services, Inc. (ARCOM) for the AIA

SECTION 235100 - BREECHINGS, CHIMNEYS, AND STACKS

Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed.

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following:

Adjust list below to suit Project.

1. Listed double-wall vents.

1.2 ACTION SUBMITTALS

A. Product Data: For the following:

1. Type B and BW vents.

PART 2 - PRODUCTS

2.1 LISTED TYPE B AND BW VENTS

See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers and products. Retain one of first three paragraphs and list of manufacturers below. See Section 016000 "Product Requirements."

A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. American Metal Products; MASCO Corporation.

2. Heat-Fab, Inc.

3. Metal-Fab, Inc.

B. Description: Double-wall metal vents tested according to UL 441 and rated for 480 deg F continuously for Type B, or 550 deg F continuously for Type BW; with neutral or negative flue pressure complying with NFPA 211.

C. Construction: Inner shell and outer jacket separated by at least a 1/4-inch (6-mm) airspace.

D. Inner Shell: ASTM B 209, Type 1100 aluminum.

E. Outer Jacket: Galvanized steel.

F. Accessories: Tees, elbows, increasers, draft-hood connectors, terminations, adjustable roof flashings, storm collars, support assemblies, thimbles, firestop spacers, and fasteners; fabricated from similar materials and designs as vent-pipe straight sections; all listed for same assembly.

Retain one of first four "Termination" subparagraphs below or insert type to suit Project. Use caution because many systems are tested with specific terminations.

1. Termination: Round chimney top designed to exclude minimum 98 percent of rainfall.

PART 3 - EXECUTION

3.1 APPLICATION

Revise this Article to include breechings, chimneys, and stacks included on Project.

A. Listed Type B and BW Vents: Vents for certified gas appliances.

3.2 INSTALLATION OF LISTED VENTS AND CHIMNEYS

A. Locate to comply with minimum clearances from combustibles and minimum termination heights according to product listing or NFPA 211, whichever is most stringent.

Retain first paragraph below if specifying positive-pressure vents.

B. Seal between sections of positive-pressure vents and grease exhaust ducts according to manufacturer's written installation instructions, using sealants recommended by manufacturer.

C. Support vents at intervals recommended by manufacturer to support weight of vents and all accessories, without exceeding appliance loading.

Retain first paragraph below for appliances more than 83 percent efficient.

D. Slope breechings down in direction of appliance, with condensate drain connection at lowest point piped to nearest drain.

E. Lap joints in direction of flow.

F. After completing system installation, including outlet fittings and devices, inspect exposed finish. Remove burrs, dirt, and construction debris and repair damaged finishes.

G. Clean breechings internally, during and after installation, to remove dust and debris. Clean external surfaces to remove welding slag and mill film. Grind welds smooth and apply touchup finish to match factory or shop finish.

H. Provide temporary closures at ends of breechings, chimneys, and stacks that are not completed or connected to equipment.

END OF SECTION 235100

Project No: 390265

BREECHINGS, CHIMNEYS, AND STACKS

235100 - 1