SECTION 15886

DUST COLLECTION SYSTEMS

PART 1 GENERAL

SECTION INCLUDES

Industrial exhaust fans.

Ductwork and duct fittings.

Inlet fittings.

Dust elimination and collection devices.

Accessories.

RELATED SECTIONS

Section 15170 - Motors: Fan motors.

Section 15242 - Vibration Isolation: Isolators.

REFERENCES

ACGIH - Industrial Ventilation, A Manual of Recommended Practice.

ASTM A 569 - Steel, Carbon (0.15 Maximum Percent), Hot-rolled Sheet and Strip, Commercial Quality.

AMCA 99 - Standards Handbook.

AMCA 210 - Laboratory Methods of Testing Fans for Rating purposes.

AMCA 300 - Test Code for Sound Rating Air Moving Devices.

AMCA 301 - Method of Calculating Fan Sound Ratings from Laboratory Test Data.

ASTM A 90 - Weight of Coating on Zinc-Coated (Galvanized) Iron or Sheet Articles.

ASTM A 167 - Stainless and Heat-resisting Chromium-Nickel Steel Plate, Sheet, and Strip.

ASTM A 525 - General Requirements for Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process.

ASTM A 527 - Steel Sheet, Zinc Coated (Galvanized) by Hot-Dip Process, Lock Forming Quality.

PS 15 - Custom Contact-Molded Reinforced-Polyester Chemical-Resistant Process Equipment.

SMACNA - HVAC Duct Construction Standards - Metal and Flexible.

SMACNA - Round Industrial Duct Construction Standard.

SMACNA - Rectangular Industrial Duct Construction Standard.

UL 181 - Factory-Made Air Ducts and Connectors.

UL 214 - Tests for Flame-Propagation of Fabrics and Films.

SUBMITTALS

Submit under provisions of Section [01300] [_____].

Shop Drawings: Indicate dimensions, sizes, weights and point loadings, material thickness, and locations and sizes of field connections. [Submit construction layout and details for inlet fittings.]

Product Data: Provide manufacturers literature and data indicating rated capacities, dimensions, weights and point loadings, accessories, electrical requirements and wiring diagrams, and location and sizes of field connections.

Provide fan curves with specified operating point clearly plotted.

Submit sound power levels for both fan inlet and outlet at rated capacity.

Manufacturer's Installation Instruction:	Indicate assembly and installation instructions.

OPERATION AND MAINTENANCE DATA

Submit under provisions of Section [01700] [_______].

Operation Data: Include instructions for lubrication, motor and drive replacement, spare parts list, and wiring diagrams.

QUALITY ASSURANCE

Fans:

Performance Ratings: Conform to AMCA 210 [and bear the AMCA Certified Rating Seal.]

Sound Ratings: AMCA 301, tested to AMCA 300 [, and bear AMCA Certified Sound Rating Seal.]

Fabrication: Conform to AMCA 99.

QUALIFICATIONS

Manufacturer: Company specializing in manufacturing the products specified in this Section with minimum [three] [_____] years [documented] experience.

PART 2 PRODUCTS

SYSTEMS MANUFACTURERS

[_____________________________].

[_____________________________].

[_____________________________].

Substitutions: Under provisions of Section [01600] [____].

CENTRIFUGAL FANS

Manufacturers:

[__________________________].

[__________________________].

[__________________________].

Base performance on [sea level] [_____________] conditions.

Performance:

Air Flow: [______] cfm ([_______] L/sec) at [_________] inch WG ([______] Pa) external static pressure 2. Motor: [______] hp, [_____] volt, [single] [three] phase, 60 Hz.

Refer to Fan Schedule. Ratings are based on AMCA 210. [Sound ratings are in accordance with AMCA 301.]

Model: [_____________] manufactured by [_______________].

Wheel and inlet:

Backward Inclined: Steel construction with smooth curved inlet flange, heavy back plate, backwardly curved blades welded or riveted to flange and back plate; cast iron hub riveted to back plate and keyed to shaft with set screws.

Radial: Steel construction with [inlet flange,] heavy reinforced] back plate, plate blades [with reinforcing gussets] [and] [wearing strips] welded or riveted to back plate [and flange]; cast iron hub riveted to back plate and keyed to shaft with set screws.

Housing:	Heavy gauge steel, [spot welded] [continuously welded] with inlet bell and shaped cut-off, factory finished with enamel or prime coat. [Provide bolted construction with horizontal flanged split housing.]

Motors and Drives:

Motors:	As indicated, in compliance with Section 15170.

Bearings: Heavy duty pillow block type, self aligning, greaselubricated ball bearings or roller bearings.

Shafts: Hot rolled steel, ground and polished, with key-way, protectively coated with lubricating oil.

V-Belt Drive: Cast iron or steel sheaves, dynamically balanced, keyed; variable and adjustable pitch for motors 15 hp (11.2 kW) and under; fixed sheaves for motors 20 hp (15 KW) and over, matched belts, and rated minimum 1.5 times nameplate rating of motor.

Belt Guard: Fabricate to SMACNA HVAC Duct Construction Standards - Metal and Flexible; of 12 gage (2.8 mm), 3/4 inch (20 mm) diamond mesh wire screen welded to steel angle frame or equivalent, prime coated.

Accessories

Fixed Inlet Vanes: Steel construction with fixed cantilevered inlet guide vanes welded to inlet bell.

Adjustable Inlet Vanes: Steel construction with blades [supported at both ends] [cantilevered] with two permanently lubricated bearings, variable mechanism [out of air steam] terminating in single control lever with control shaft for double width fans and locking quadrant.]

Discharge Dampers: [Parallel] [Opposed] blade heavy duty steel damper assembly with blades constructed of two plates formed around and welded to shaft, channel frame, sealed ball bearings, with blades linked out of air stream to single control lever.

Inlet/Outlet Screens: Galvanized steel welded grid.

DUCTWORK AND DUCT ACCESSORIES

Materials:

Galvanized Steel Ducts: ASTM A 525 or ASTM A 527 galvanized steel sheet, lock-forming quality, having G90 zinc coating in conformance with ASTM A 90 [,minimum] [_____] gage ([_____]mm).

Steel Ducts: ASTM A 569 carbon steel [,minimum] [_____] gage ([_____]mm).

Stainless steel Ducts: ASTM A 167, Type [304] [____][,minimum] [_____] gage ([_____]mm).

Glass Fiber Reinforced Plastic Ducts: NBS Voluntary Product Standard PS 15, UL 181, [-__________].

Ductwork

Fabricate and support in accordance with SMACNA [HVAC Duct Construction Standards - Metal and Flexible [2] [_____] pressure class [Round Industrial Duct Construction Standard and Rectangular Industrial Duct Construction Standard] and ACGIH Industrial Ventilation Manual except as indicated.

Construct T's, bends, and elbows with radius of not less than 11/2 times width of duct on centerline.

Increase duct sizes gradually, not exceeding 15 degrees divergence wherever possible. Divergence upstream of equipment shall not exceed 30 degrees; convergence downstream shall not exceed 45 degrees. [, minimum] [_____] gage ([_____]mm).

Fabricate continuously welded round and oval duct fittings two gauges heavier than duct gauges indicated in SMACNA Standard. Prime coat welded joints.

Use crimp joints with or without bead for joining round duct sizes [8] [ ___] inch ([200] [ ___] mm) and smaller with crimp in direction of air flow, with liquid adhesive plus sheet metal screws.

Joints shall be minimum 4 inch (100 mm) cemented slip joint, brazed, or electric welded.

Provide standard 45 degree lateral wye branch fittings unless otherwise indicated.

Use double nuts and lock washers on threaded rod supports.

Flexible Connectors:	UL 214 listed, fire-retardant chloroprene or chlorosulfonated polyethylene impregnated fabric, minimum density [20] [36] oz per sq yd ([0.68] [1.22] kg/sq m), approximately [2] [3] [6] inches ([50] [75] [150] mm) wide, crimped into metal edging strip.

Angle rings:	Carbon Steel, unpainted, leg out, drilled with bolt holes.

Blast Gates: [Half] [Full] collar of [cast aluminum] [steel], with galvanized steel slide, set screw.

Flat Back Elbows: Long radius rectangular elbow at duct material with heavy gage, removable, [stainless steel] [rubber lined] [________] back strip.

Ball Joints:	[Cast iron] [Spun galvanized steel] with tubular studs for connecting ducts, allowing 25 degree angle off center.

INLET FITTINGS

Fabricate of	[minimum [16 gage (_____mm)] [_____]] [galvanized] [carbon] [stainless] steel.

Fabricate inlet for [_________] to [detail indicated on Drawings] [ ACGIH Industrial Ventilation Manual detail print number] [_________] [indicated in Schedule].

Fabricate with hemmed edges, closed corners, and reinforced for span and attachment; with duct connection [;prime coated] [;enamelled finish].

FILTER SEPARATOR

Manufacturers:

[_______________________].

[_______________________].

[_______________________].

Indoor dust collector consisting of structural frame and casing, filters, fan and accessories.

Frame and Casing: Steel frame with enamel finish, [16] [18] gauge ([.15] [1.2] mm) galvanized steel panels, [_____] x [____] inch ([___] x [____] mm) floor area, [____] cubic feet ([___] cubic meters) dust storage capacity [bin] [bags].

Filter: [Polyester] [______] fabric filters, [12] [____] ounces/sq yd [[0.4] [____] kg/sq m) density, [_____] square feet ([_____]square meters) filter area, [99.9] [_____] percent dust spot efficiency.

Fan:	Welded construction centrifugal fan with material handling wheel, direct drive.

Capacity: [_____] CFM ([______] L/sec) at [____] inch WG ([_____] Pa) static pressure.

Motor: [_____]hp, [_____] volt, [single] [three] phase, 60 Hz.

Accessories:	[Manual shaker] [Powered shaker] [Differential static pressure gage] [Discharge silencer] [Push Button control panel with motor starter].

Model [_______] manufactured by [____________________].

CENTRIFUGAL SEPARATOR

Manufacturers:

[_______________________].

[_______________________].

[_______________________].

Cyclone dust collector consisting of cyclone with integral fan and structural stand incorporation dust storage.

Frame and Casing: Steel frame with enamelled finish, [16] [_____] gage ([1.5] [______] mm) structure with [18] [_____] gage ([1.2] [______] mm) panels and [20] [_____] ([0.9][________] cyclone, [_______] cubic feet ([______] cubic meters) dust storage capacity.

Cyclone Efficiency: [99] [84] [_____] percent of [steel grindings] [sawdust] [baking flour] [corn starch] [_______________].

Fan:	Welded construction centrifugal fan with material handling wheel, direct drive.

Capacity: [_____] CFM ([______] L/sec) at [____] inch WG ([_____] Pa) static pressure.

Motor: [_____], [_____] volt, [single][three] phase, 60 Hz.

Accessories:	[Discharge silencer] [Push Button control panel with motor starter].Model [_______] manufactured by [____________________].

PART 3 EXECUTION

INSTALLATION

Install equipment in accordance with manufacturers instructions.

Do not operate fans for any purpose until ductwork is clean, filters are in place, bearings lubricated, and fan has been test run under observation.

Install fans with resilient mountings and flexible electrical leads. Refer to Section 15242.

Install flexible connections at [fan] [separator] inlet and discharge. Ensure metal bands of connectors are parallel with minimum one inch (25 mm) flex between ductwork and fan while running.

Provide pitot tube openings where required for testing of systems, complete with metal cap with spring device or screw to ensure against air leakage.

Locate ducts with sufficient space around equipment to allow normal operating and maintenance activities.

FAN SCHEDULE

Drawing_Code	F-1	F-2	F-3	F-4

Manufacturer

Model

Fan Type

Wheel Type

Class

Arrangement

Size

Air Flow Capacity

Static Pressure

Drive

Motor Size

Power, Volt/Phase/Cycle

Sound Power

Discharge

1st Octave

2nd Octave

3rd Octave

4th Octave

5th Octave

6th Octave

7th Octave

8th Octave

Inlet

1st Octave

2nd Octave

3rd Octave

4th Octave

5th Octave

6th Octave

7th Octave

8th Octave

Accessories

SEPARATOR SCHEDULE

Drawing_Code	DS-1	DS-2	DS-3	DS-4

Manufacturer

Model

Fan Type

Filter Area

Air Flow Rate

Static Pressure

Motor Size

Power, Volt/Phase/Cycle

Accessories

INLET FITTING SCHEDULE

Group	Operations	Print_No.

Material	Bag Filling VS-301	Handling	Bag Tube Packer VS-302

Barrel Filling VS-303

Bin and Hopper	VS-304	Bucket Elevator	VS-305	Conveyor Belt VS-306

Screens	VS-307

Metal Working Abrasive Cutoff Saw	VS-401

Buffing & Polishing Belts

Backstand Idler	VS-402

Metal Polishing	VS-403

Buffing & Polishing Wheels

Automatic Circular	VS-404	Automatic Straight Line	VS-405

Manual	VS-406

Grinding Disc

Horizontal Double-

Spindle	VS-408	Horizontal Single-

Spindle	VS-409	Vertical Spindle	VS-410

Grinding Wheel

Speeds Below 6500sfm	VS-411

Speeds above 6500sfm	VS-411.1

Portable Grinding Bench	VS-412	Portable Grinding Table VS-413

Grinder	VS-414	Metal Spraying	VS-415

Welding Bench VS-416

Welding Bench VS-416.1	Surface Grinder VS-417 Metal

Cutting Bandsaw	VS-418

Group	Operations	Print_No.

Wood Working Jointer	VS-701

Belt Sanders	VS-702	Disc Sanders	VS-703	Multiple Drum Sanders VS-704 Single	Drum Sanders	VS-705 Band	Saws

Swing Saws VS-707 Table	Saws VS-708	Radial Arm Saws VS-709

Low-Volume

High-Velocity	Cone Wheels	VS-801

Cup Wheels & Brushes	VS-802

Radial Grinders	VS-803

Disc Sander	VS-804	Vibratory Sander	VS-805	Typical System	VS-807

END OF SECTION