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SECTION 23 07 13
DUCT AND PLENUM INSULATION
 
 
** NOTE TO SPECIFIER ** Unifrax I LLC ; temperature rated insulation products.
This section is based on the products of Unifrax I LLC , which is located at:
600 Riverwalk Pkwy. Suite 120
Tonawanda, NY 14150
Tel: 716-768-6500
Fax: 716-768-6400
Email: request info (info@unifrax.com)
Web: www.unifrax.com/market-segments/fire-protection
[ Click Here ] for additional information.
Unifrax is a leading producer of high temperature insulation products for a wide variety of commercial building passive fire protection applications.
Our well-known Fiberfrax ceramic fiber product line, revolutionary Insulfrax(R) and Isofrax(R), soluble fiber products, and FyreWrap(R) other high temperature insulation products provide innovative heat management and fire protection solutions and exceptional value to our customers in a wide range of markets.
With manufacturing and sales presence in the global marketplace, and a leadership position in the global high temperature fibers market, Unifrax offers its worldwide customers the high quality products, service and support that have been the Unifrax standard for more than 60 years.
See our SpecWizard: HYPERLINK "http://www.arcat.com/specwizard/15080uni/index.htm"Click Here
 
PART 1 GENERAL
 
1.1
SECTION INCLUDES
 
** NOTE TO SPECIFIER ** Zero clearance, 2-hour fire-resistive Ventilation Air Duct (VAD) assembly. Delete if not required for project.
 
A.
Duct insulation to achieve a 2-hour fire-resistive ventilation duct assembly and hazardous exhaust systems.
 
** NOTE TO SPECIFIER ** Plenum fire rated insulation. Delete if not required for project.
 
B.
Plenum insulation to achieve a non-combustible rating for combustible materials in an air plenum.
 
** NOTE TO SPECIFIER ** Zero clearance, 2-hour fire-resistive grease duct assembly. Delete if not required for project.
 
C.
Duct insulation to achieve zero clearance to combustibles and a 2-hour fire-resistive rated duct enclosure on commercial kitchen grease duct exhaust systems.
 
** NOTE TO SPECIFIER ** Delete if not required for project.
 
D.
Duct insulation to achieve single layer, one-hour fire-resistance rated enclosure around dryer exhaust ductwork.
 
** NOTE TO SPECIFIER ** Delete if not required for project.
 
E.
Cable tray insulation to achieve an external insulation wrap around cables, trays and conduits to provide a fire rated enclosure, permitting continued operation.
 
** NOTE TO SPECIFIER ** Delete if not required for project.
 
F.
Blanket insulation to achieve thermal insulation at continuous operating temperatures up to 2012F (1100C).
 
** NOTE TO SPECIFIER ** Delete if not required for project.
 
G.
Blanket insulation to achieve fire protection insulation for a variety of rated assemblies on marine structures and vessels.
1.2
RELATED SECTIONS
 
** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
 
A.
Section 07 21 26 - Blown Insulation.
 
** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
 
1.3
REFERENCES
 
** NOTE TO SPECIFIER ** Ventilation Air Ductwork (VAD). Delete if not required for project.
 
A.
The following published specifications, standards, or tests that apply to single layer, fire - resistive rated ventilation air duct (VAD) insulation and hazardous exhaust duct insulation:
1.
International Organization for Standardization, Fire resistance tests ventilation air ducts (ISO 6944).
2.
International Code Council (ICC).
3.
International Building Code (IBC).
4.
International Mechanical Code (IMC).
5.
ASTM C 411 - Standard Test Method for Hot-Surface Performance of High-Temperature Thermal Insulation.
6.
ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.
7.
ASTM E 119 - Standard Test Method for Fire Tests of Building Construction Materials.
8.
ASTM E 814 - Standard Test Method for Fire Tests of Through-Penetration Fire Stops.
 
** NOTE TO SPECIFIER ** Noncombustible Plenum insulation. Delete if not required for project.
 
B.
The following published specifications, standards, tests, or recommended methods of trade, industry, or governmental organizations apply to single layer noncombustible fire rated plenum insulation:
1.
UL 1887 - Visible Flame and Smoke Characteristics for Plastic Pipe.
2.
ASTM E 84/UL/ULC 723 - Surface Burning Characteristics.
3.
ASTM E 136 - Non-combustibility.
 
** NOTE TO SPECIFIER ** Grease duct fire rated insulation. Delete if not required for project.
 
C.
The following published specifications, standards, or tests that apply to zero clearance two layer fire rated systems of grease duct insulation:
1.
NFPA 96.
2.
International Code Council Evaluation Service (ICCES).
3.
1997 ICBO Uniform Mechanical Code (ICBO UMC).
4.
1997 Uniform Building Code (UBC).
5.
2012 International Mechanical Code (IMC).
6.
2009 Uniform Mechanical Code (IAPMO UMC).
7.
2010 National Building Code of Canada.
8.
ASTM E 2336 - Standard Test Methods for Fire Resistance Rated Grease Duct Enclosures.
9.
CAN/ULC-S144-09 Standard Method of Fire Resistance Test - Grease Duct Assemblies First Edition.
10.
ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.
11.
ASTM E 119 - Standard Test Methods for Fire Tests of Building Construction and Materials.
12.
ASTM E 136 - Standard Test Method for Noncombustiblity.
13.
ASTM E 518 - Standard Test for Durability.
14.
ASTM E 814 - Standard Test Method for Fire Tests of Through-Penetration Fire Stops
 
** NOTE TO SPECIFIER ** Dryer and plenum systems. Delete if not required for project.
 
D.
The following published specifications, standards, or tests that apply to single layer, fire - resistive rated dryer duct (DPS) insulation:
1.
International Organization for Standardization, Fire resistance tests ventilation air ducts (ISO 6944).
2.
International Building Code (IBC).
3.
International Mechanical Code (IMC).
4.
ASTM E 518 - Standard Test for Durability.
5.
ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.
1.4
SUBMITTALS
A.
Submit under provisions of Section 01 30 00 - Administrative Requirements.
B.
Product Data: Manufacturer's data sheets on each product to be used, including:
1.
Preparation instructions and recommendations.
2.
Storage and handling requirements and recommendations.
3.
Installation methods.
C.
Submit certification and installation documentation showing system performance and Code compliance.
1.5
QUALITY ASSURANCE
A.
Manufacturer Qualifications: Manufacturer capable of providing field service representation during installation.
B.
Fabricator Qualifications: Fabrication performed in quality controlled manufacturing environment by experienced fabricators with references indicating multiple satisfactory experiences fabricating high temperature insulation blanket as required for this project.
C.
Installer Qualifications: Installer experienced in performing work of this section who has specialized in installation of work similar to that required for this project.
 
** NOTE TO SPECIFIER ** Include a mock-up if the project size and/or quality warrant taking such a precaution. The following is one example of how a mock-up on a large project might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project.
 
D.
Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.
1.
Finish areas designated by Architect.
2.
Do not proceed with remaining work until workmanship, color, and sheen are approved by Architect.
3.
Refinish mock-up area as required to produce acceptable work.
E.
Preinstallation Meetings: Conduct preinstallation meeting to verify project requirements, manufacturer's installation instructions and manufacturer's warranty requirements. Comply with Division 01 Project Management and Coordination (Project Meetings).
1.6
DELIVERY, STORAGE, AND HANDLING
A.
Deliver materials in original unopened packages, clearly marked with manufacturer's name, product designation, manufacturer's lot numbers and appropriate third party classification listings.
B.
Store in a covered dry environment.
C.
Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction.
1.7
PROJECT CONDITIONS
A.
Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's absolute limits.
PART 2 PRODUCTS
 
2.1
MANUFACTURERS
A.
Acceptable Manufacturer: Unifrax I LLC , which is located at: 600 Riverwalk Pkwy. Suite 120; Tonawanda, NY 14150; Tel: 716-768-6500; Fax: 716-768-6400; Email: request info (info@unifrax.com); Web: www.unifrax.com/market-segments/fire-protection
 
** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
 
B.
Substitutions: Not permitted.
C.
Requests for substitutions will be considered in accordance with provisions of Section 01 60 00 - Product Requirements.
 
** NOTE TO SPECIFIER ** Unifrax's FyreWrap(R) Elite(R)1.5 Duct Insulation is a optimized single-layer flexible enclosure for 1- and 2-hour fire-rated ventilation air ducts (VAD). Typical duct types include smoke control, stairwell and vestibule pressurization, ventilation, heating and air conditioning supply/return, and commercial dryer exhaust, as well as refuse and linen chutes. This slim, compact design is an alternate to code prescribed fire-rated shafts and results in significant weight, space and labor savings when compared to traditional shafts. Ventilation air duct fire rated assembly. Delete if not required.
 
2.2
DUCT INSULATION FOR FIRE RATED VENTILATION AIR DUCTS (VAD) AND HAZARDOUS EXHAUST DUCTS
A.
Product: FyreWrap Elite 1.5 Duct Insulation by Unifrax I LLC, Tonawanda, NY:
1.
Nominal 1.5 inch (38 mm) thick foil encapsulated blanket material at 6 PCF to provide 2-hour fire resistive enclosure assembly per ISO 6944.
2.
An inorganic, flexible, non-asbestos, bio-soluble high temperature, foil encapsulated blanket material.
3.
Blanket insulation shall maintain a 2012 degree F (1100 degree C) operating temperature.
4.
Blanket fiber materials shall be tested per EU regulatory requirements, Directive 97/69/EC for bio-solubility, and verified by an independent laboratory.
5.
Provide firestop sealants, tape, insulation pins, clips, banding and other components to ensure the installed system complies with the complete tested two-hour fire rated VAD assembly.
B.
Performance: Lightweight, non-asbestos, bio-soluble, high temperature, inorganic, foil encapsulated insulation blanket. The duct wrap system shall be a tested and listed system evaluated for a 2-hour fire resistance rating on a ventilation air duct assembly. Testing shall be conducted by a nationally recognized testing laboratory.
1.
Performance Requirements:
a.
Single Layer System for two hour fire rating.
b.
2-hour fire resistive enclosure assembly tested per ISO 6944.
c.
Firestop tested per ASTM E 814, 2 Hour F and T Ratings.
d.
Meets 25/50 Flame and Smoke Ratings per ASTM E 84.
 
** NOTE TO SPECIFIER ** Unifrax's FyreWrap(R) 0.5 Plenum Insulation is a high temperature insulation blanket specifically designed to provide a single layer, flexible enclosure around combustible items located within fire-rated return air plenums. New construction, building renovations or modifications to the electrical and mechanical systems may result in the installation of plastic pipe or plastic-coated cables that cannot meet the minimum combustibility requirements defined in the Mechanical Code. FyreWrap 0.5 Plenum Insulation provides fire protection for these installed items by preventing flame propagation and smoke development in the plenum area. Fire rated plenum insulation. Delete if not required.
 
2.3
PLENUM INSULATION FOR NONCOMBUSTIBLE FIRE RATED PLENUM
A.
Product: FyreWrap 0.5 Plenum Insulation by Unifrax I LLC, Tonawanda, NY:
1.
Nominal 0.5 inches (12 mm) thick foil encapsulated blanket material to provide non combustible rating.
2.
An inorganic, flexible, non-asbestos, bio-soluble high temperature, foil encapsulated blanket material.
3.
Blanket insulation shall maintain a 2012 degree F (1100 degree C) operating temperature.
4.
Blanket fiber materials shall be tested per EU regulatory requirements, Directive 97/69/EC for bio-solubility, and verified by an independent laboratory.
B.
Performance: A lightweight, non-asbestos, bio-soluble, high temperature, inorganic, foil encapsulated insulation blanket. The plenum insulation system shall be tested and listed to provide a non combustible rating for combustible items located in air plenums.
1.
Performance Requirements:
a.
Single Layer System of 1/2 inch (13 mm) thick material.
b.
Meets UL 1887 test criteria for visible flame and smoke characteristics.
c.
Meets 25/50 Flame and Smoke Ratings per ASTM E 84.
d.
Insulation and combustible item shall be tested as an assembly.
 
** NOTE TO SPECIFIER ** Unifrax's FyreWrap(R) Elite(R) 1.5 Duct Insulation is a high temperature insulation blanket specifically designed to provide a flexible enclosure for one- and two-hour rated commercial kitchen grease ducts. FyreWrap(R) Elite(R) 1.5 Duct Insulation provides a tested, fire-protective enclosure acceptable as an alternate to a traditional fire-rated shaft. Installed as a two-layer system, FyreWrap(R) Elite(R) 1.5 Duct Insulation complies with IMC 2006-2012 Editions, ICC ES Acceptance Criteria for Grease Duct Enclosure Assemblies, AC101 (formerly ICBO) and ASTM E-2336. Grease duct zero clearance fire rated assembly. Delete if not required.
 
2.4
DUCT INSULATION FOR ZERO CLEARANCE APPLIED FIREPROOFING FOR FIRE-RATED GREASE DUCTS
A.
Product: FyreWrap Elite 1.5 Duct Insulation by Unifrax I LLC, Tonawanda, NY:
1.
Nominal 1.5 inch (38 mm) thick foil encapsulated blanket material at 6 PCF to provide 2-hour fire resistive enclosure assembly per ASTM E 2336.
2.
A lightweight, flexible, inorganic, non-asbestos, bio-soluble, high temperature, foil encapsulated blanket wrap.
3.
Flexible, fully encapsulated blanket material, two-layer system to provide 2-hour fire resistive enclosure assembly per ASTM E 2336 and CAN/ULC-S144-09.
4.
Blanket insulation shall maintain a 2012 degree F (1100 degree C) operating temperature.
5.
Blanket fiber materials shall be tested per EU regulatory requirements, Directive 97/69/EC for bio-solubility, and verified by an independent laboratory.
6.
Provide field fabricated or prefabricated fire rated access doors (for cleanout as required) to maintain 2-hour rating and required clearance.
7.
Provide firestop sealants, tape, insulation pins, clips, banding and other components as per manufacturer's instructions to provide fully functioning zero clearance to combustibles grease duct system.
B.
Performance: Lightweight, non-asbestos, bio-soluble, high temperature, inorganic, foil encapsulated insulation blanket. The blanket material shall be capable of performing at 2000 degree F (1093 degree C) matching the internal and external fire test temperature for grease ducts. The duct wrap system shall be a tested and listed system evaluated for reduced clearances to combustibles as an alternative to a grease duct, with a two-hour fire rated shaft enclosure. Testing shall be conducted at a nationally recognized testing laboratory.
1.
Performance Requirements:
a.
Two-layer system of 1-1/2 inch (38 mm) 6 pcf (96 kg/m3) material.
b.
Zero clearance to combustibles across the entire surface of the blanket material per internal fire tests of ASTM E 2336.
c.
2-hour fire resistive enclosure assembly per ASTM E 119.
d.
CAN/ULC-S144-09: Stability-2hr, Integrity-2hr, Insulation-2hr.
e.
Firestop tested per ASTM E 814, 2 Hour F and T Ratings.
f.
Meets 25/50 flame and smoke ratings per ASTM E 84.
 
** NOTE TO SPECIFIER ** Unifrax's FyreWrap(R) DPS Insulation is a high-temperature insulation blanket specifically designed, UL tested and certified to provide a single layer, one-hour rated flexible enclosure around dryer exhaust ductwork. The product also provides code compliant fire protection for combustible items, such as plastic pipes by preventing flame propagation and smoke development in the plenum area. Delete if not required.
 
2.5
DUCT INSULATION FOR SINGLE LAYER, ONE-HOUR RATED ENCLOSURE FOR DRYER EXHAUST DUCTWORK
A.
Product: FyreWrap DPS Insulation by Unifrax LLC, Tonawanda, NY:
1.
Nominal 0.5 inch (13 mm) thick foil encapsulated blanket material at 8 PCF to provide 1-hour fire resistive enclosure assembly per ISO 6944.
2.
An inorganic, flexible, non-asbestos, bio-soluble high temperature, scrim encapsulated blanket material.
3.
Blanket insulation shall maintain a 2300 degree F (1260 degree C) operating temperature.
4.
Provide firestop sealants, tape, banding and other components to ensure the installed system complies with the complete tested one-hour fire rated DPS assembly.
B.
Performance: Lightweight, non-asbestos, bio-soluble, high temperature, inorganic, foil encapsulated insulation blanket. The plenum insulation system shall be tested and listed to provide a 1 hour rating for combustible items located in air plenums. Testing shall be conducted at a nationally recognized testing laboratory.
1.
Performance Requirements:
a.
ISO 6944 (1985): 1 Hour Ventilation Duct- Shaft alternative. UL Assembly No. V-32.
b.
UL 1479/ASTM E814: Firestop: 1-hour F & T Ratings. UL Assembly Nos. F-C-7057 & F-C-7058.
c.
ASTM E-84/UL 723: Encapsulated - Flame <25, Smoke <50. Unfaced - Flame = 0, Smoke = 0.
d.
ASTM C 518: R-Value: DPS (1/2 inch (13 mm)) = 2.0.
e.
EN 1094: Temperature Grade 2300 degree F (1260 degree C).
f.
Code Compliance: 2012 IMC Sect. 504.2, 604, 2012 IBC Sect. 717.6.2, 713, 703.
 
** NOTE TO SPECIFIER ** Unifrax's FyreWrap(R) Cable Insulation is a thin, flexible, insulation wrap designed to provide a fire-protective enclosure around cable trays and conduit. The FyreWrap system ensures electrical circuit integrity during exposure to an external hydrocarbon fire, permitting continued operation or controlled shutdown of critical equipment during emergency conditions. This system is FM Global Approved and meets ASTM E-1725 "Fire Tests of Fire-Resistive Barrier Systems for Electrical System Components," the newest industry standard, requiring the highest level of performance for trays with zero to full cable loading. The system also meets ASTM E-1529 and provides circuit integrity ratings. FyreWrap complies with many industry specifications on fireproofing for petroleum and petrochemical processing plants. Delete if not required for project.
 
2.6
CABLE TRAY INSULATION
A.
Product: FyreWrap Cable Tray Insulation by Unifrax LLC, Tonawanda, NY:
1.
Thickness: 1.5 inches and 2.0 inches (38 mm and 51 mm).
2.
Density: 8 pcf (128 kilogram/cubic meter).
3.
Standard Product Form: Scrim Encapsulated.
4.
Product Availability:
a.
1.5 inches x 24 inches w x 25 LF (38 mm x 610 mm x 7.62 LM).
b.
1.5 inches x 48 inches w x 25 LF (38 mm x 1219 mm x 7.62 LM).
c.
2 inches x 24 inches w x 20 LF (51 mm x 610 mm x 6.1 LM).
d.
2 inches x 48 inches w x 20 LF (51 mm x 1219 x 6.1 LM).
B.
Performance: A thin, flexible, insulation wrap designed to provide a fire-protective enclosure around cable trays and conduit with Fire Ratings of 15, 30, 45 and 60 minutes.
1.
Performance Requirements:
a.
FM Global Approved - Wrap for Grouped Electrical Cables.
b.
Fire Exposure - Hydrocarbon Fire per ASTM E-1529.
c.
Circuit Integrity - per ASTM E-1529.
d.
Temperature Integrity - per ASTM E-1725.
e.
Cable Loading - Empty to Fully Loaded Trays.
f.
ASTM E-84 Surface Burning Characteristics: Unfaced Core: Flame/Smoke Rating = Zero. FyreWrap: Flame/Smoke Rating < 25/50.
 
** NOTE TO SPECIFIER ** FyreWrap(R) Elite(R) Blanket from Unifrax is a totally inorganic, flexible, high-temperature insulation blanket optimized for high performance passive fire protection applications. FyreWrap Elite utilizes a calcium, magnesium, silicate chemistry to provide thermal insulation at continuous operating temperatures up to 2012F (1100C). This fiber chemistry has been combined with Unifrax's proprietary fiber spinning technology to create a specialty high-temperature blanket with optimized fire protection properties. Delete if not required for project.
 
2.7
BLANKET INSULATION
A.
Product: FyreWrap Elite Blanket by Unifrax LLC, Tonawanda, NY:
1.
Thickness: 1/2 inch, 1 inch, 1.5 inches, 2.0 inches (13 mm, 25 mm, 38 mm, 51 mm).
2.
Density: 4, 6, 8,10 PCF (64 kilogram/cubic meter, 96 kilogram/cubic meter, 128 kilogram/cubic meter, 160 kilogram/cubic meter).
3.
Width: 24 inches, 48 inches (610 mm, 1219 mm).
4.
Length: 12.5 feet, 25 feet (3.8 m, 7.6 m).
B.
Performance: A calcium, magnesium, silicate chemistry to provide thermal insulation at continuous operating temperatures up to 2012 degree F (1100 degree C).
1.
Performance Requirements:
a.
ASTM E84, UL 723, ULC S102.2 - UL File No. R14514 Flame Spread/Smoke Developed Rating: Unfaced Blanket - Zero/Zero. Encapsulated - <25/<50.
b.
ASTM E136 Non-Combustibility Test: Passes.
c.
ASTM C518 Durability Test: Passes; R-Value = 4.8 per inch at 75 degree F.
d.
ASTM C518 Thermal Resistance: R-Value of Elite 1.5 inches (38 mm) = 7.2.
 
** NOTE TO SPECIFIER ** FyreWrap Marine Blanket provides fire protection insulation for a variety of rated assemblies on marine structures and vessels. Thin, lightweight systems combined with a flexible product form result in lower installation costs and significant weight savings. This offers builders and owners reduced structure weight, which may yield increased vessel speed, fuel savings and available payloads. Delete if not required for project.
 
2.8
BLANKET INSULATION - MARINE
A.
Product: FyreWrap Marine Blanket by Unifrax LLC, Tonawanda, NY:
1.
Thickness: 0.5 inch, 1.0 inch, 1.5 inches, 2.0 inches and 2.5 inches (13 mm, 25 mm, 38 mm and 55 mm).
2.
Density: 6, 8 and 9 lb./cu.ft. (96, 128 and 144 kg/m3).
3.
Width: Standard: 24 inches (600 mm), Non-standard: 48 inches (120 mm).
4.
Facing: Aluminum Foil .0015 inch (0.038 mm).
B.
Performance: Provides fire protection insulation for a variety of rated assemblies on marine structures and vessels.
1.
Performance Requirements:
a.
Melting Point: 2300 degreesF (1260 degreesC)
b.
Temperature Grade: 2012 degreesF (1100 degreesC)
c.
Loss On Ignition (LOI): 0%
d.
Surface Burning Characteristics (per ASTM E84); Flame Spread Rating = 0. Smoke Developed Rating = 0.
e.
Marine Certifications: USCG, Lloyd's, Intertek.
2.
Blanket Insulation - Marine provides the following product acceptance and certifications:
a.
U.S. Coast Guard approved for steel and aluminum
b.
structures
c.
Complies with SOLAS Safety Objectives and IMO FTP Code fire test requirements; Res.A.754(18).
d.
Fire Resisting Division for High Speed Craft (HSC); Res. MSC.45(65).
e.
ABS (American Bureau of Shipping) approved for steel and aluminum structures.
 
** NOTE TO SPECIFIER ** Delete if not required.
 
2.9
ACCESS DOORS
 
** NOTE TO SPECIFIER ** Delete field fabricated access doors if not required.
 
A.
Access Door: Field fabricated 16 gauge steel.
1.
Threaded Rods: 1/4 inch (6 mm) diameter.
2.
Gasket: 1/2 inch (13 mm) Unfaced FyreWrap or ceramic fiber blanket.
 
** NOTE TO SPECIFIER ** Delete prefabricated access doors if not required.
 
B.
Access Door: Ductmate Ultimate prefabricated 16 gauge steel.
 
** NOTE TO SPECIFIER ** Delete prefabricated access doors if not required.
 
C.
Access Door: Ductmate F2 prefabricated 16 gauge steel.
PART 3 EXECUTION
 
3.1
EXAMINATION
A.
Do not begin installation until substrates have been properly prepared.
B.
If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
3.2
PREPARATION
A.
Inspect and verify that all surfaces are smooth, dry, clean and free from dust, debris, or other loose materials. Surfaces shall be dry before the application of insulation materials.
B.
Clean surfaces thoroughly prior to installation.
C.
Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
3.3
INSTALLATION
 
** NOTE TO SPECIFIER ** Delete if not required.
 
A.
Duct Insulation (HVAC and Hazardous Ducts):
1.
Single-Layer System: Apply single layer encapsulated insulation directly to duct surface.
 
** NOTE TO SPECIFIER ** Include the following paragraph for duct widths of 24 inches (610 mm) or less. Delete if not required.
 
2.
Install with minimum 3 inch (76mm) material joint overlap.
3.
Seal cut edges with aluminum foil tape
4.
Attachment for duct widths of 24 inches (610 mm) or less:
a.
Temporarily secure duct insulation with 1 inch (25.4 mm) wide filament tape located 1-1/2 inches (38 mm) from blanket edge and on 10-1/2 inch (267 mm) centers.
b.
Permanently attach blanket with carbon steel or stainless steel banding located 1-1/2 inches (38 mm) from blanket edge and on 10-1/2 inch (267 mm) centers.
c.
Tighten steel bands to secure insulation firmly without damaging blanket.
 
** NOTE TO SPECIFIER ** Include the following article for duct widths greater than 24 inches (610 mm). Delete if not required.
 
5.
Attachment for duct widths greater than 24 inches (610 mm):
a.
Weld 12 gauge steel insulation pins to underside of horizontal runs and backside of vertical runs in rows spaced maximum 10 1/2 inches (267 mm) on center along duct length, 6 inches - 12 inches (152 - 305 mm) from duct edges.
b.
Space pins 12 inches (305 mm) on center across duct width.
c.
Impale insulation over pins and hold in place with 2-1/2 inch (64 mm) square galvanized steel speed clips (washers).
d.
Turn down or cut off exposed pin ends.
 
** NOTE TO SPECIFIER ** Delete if not required.
 
B.
Plenum Insulation:
1.
Apply single layer encapsulated insulation directly to surface of combustible item.
2.
Cut insulation lengths to wrap around combustible item providing 1 inch (25.4 mm) longitudinal overlap.
3.
Seal cut edges with aluminum foil tape.
4.
Provide 1 inch (25.4 mm) perimeter overlap with adjacent insulation blanket.
5.
Temporarily secure plenum insulation with 1 inch (25.4 mm) wide filament tape, located 1/2 inch (12.7 mm) from blanket edge and on 11 inch (280 mm) centers.
6.
Permanently attach insulation with steel tie wire or banding on maximum 11 inch centers (279 mm).
7.
Tighten wire or banding to secure insulation firmly without damaging blanket.
 
** NOTE TO SPECIFIER ** Delete if not required.
 
C.
Duct Insulation (Grease Ducts):
1.
Two-Layer System: Apply two-layers of encapsulated insulation directly on duct surface.
2.
Install first layer with transverse material compression joints. Install first layer longitudinal joints with minimum 3 inch (76mm) material joint overlaps.
3.
Install second layer with minimum 3 inch (76mm) material joint overlaps, offset minimum of 12 inches (305mm) from first layer joints.
4.
Seal cut edges with aluminum foil tape.
 
** NOTE TO SPECIFIER ** Any one of the following 3 techniques is acceptable for transverse overlap joints of adjacent blankets on the second layer. The telescoping technique is the most common method and the checkerboard technique is often used when repairing a small section of duct wrap. Delete the following sentence where there is no need to use adjacent blankets longitudinally; see manufacturer's literature for detailed diagrams. Delete technique not required or acceptable.
 
5.
Transverse material joints may be installed using any of the following techniques:
a.
Telescope overlap - insulation installed by leaving one edge exposed and overlapping other edge with adjacent blanket.
b.
Checkerboard overlap - overlap both edges of alternating blanket, leaving both edges of others exposed.
c.
Butt joint and collar - cover blanket butt edges with 6 inch (152mm) blanket collar centered on material joint.
 
** NOTE TO SPECIFIER ** The following attachment option shall be specified for duct widths 24 inches (610 mm) or less when neither of the above two methods will be used.
 
6.
Banding for duct widths 24 inches (610 mm) or less:
a.
Temporarily secure insulation with filament tape.
b.
Place carbon steel or stainless steel bands (minimum 1/2 inch (12.7 mm) wide, nominal 0.015 inch (0.4 mm) thick) 1-1/2 inches (38 mm) from edge of overlap joints.
c.
Place bands at maximum 10-1/2 inches (267 mm) on center in field between overlaps.
d.
Tighten steel bands to secure insulation firmly without damaging blanket.
 
** NOTE TO SPECIFIER ** The following attachment option may be chosen for duct widths greater than 24 inches (610 mm) up through 48 inches (1220 mm) where the above option is not chosen, and is an optional attachment method for duct widths 24 inches (610 mm) or less.
 
7.
Pins and banding for duct widths greater than 24 inches (610 mm) up through 48 inches (1220 mm):
a.
Weld 12 gauge steel insulation pins to underside of horizontal runs and backside of vertical runs in rows spaced maximum 10-1/2 inches (267 mm) on center along duct length.
b.
Space pins 12 inches (305 mm) on center across duct width and 1-1/2 inches (38 mm) from duct edges.
c.
Impale insulation over pins and hold in place with 2-1/2 inch (64 mm) square galvanized steel speed clips (washers).
d.
Secure insulation to duct with filament tape as needed.
e.
Turn down or cut off exposed pin ends.
f.
Locate carbon steel or stainless steel bands (minimum 1/2 inch (12.7 mm) wide, nominal 0.015 inch (0.4 mm) thick) 1-1/2 inches (38 mm) from edge of overlap joints.
g.
Space remaining bands at midpoint between overlap joints or at 10-1/2 inches (267 mm) oc. Tighten steel bands to secure insulation firmly without damaging blanket.
 
** NOTE TO SPECIFIER ** The following attachment option is required for any ducts wider than 48 inches (1220 mm) and is optional for all others. Delete if not required.
 
8.
Pins for ducts wider than 48 inches (1220 mm):
a.
Weld 12 gauge steel insulation pins on all sides of duct in rows spaced maximum 10 1/2 inches (267 mm) on center along duct length.
b.
Space pins 8 inches (203 mm) on center around duct and 5 inches (127 mm) from duct edges. Center insulation overlaps on pins.
c.
Impale insulation over pins and hold in place with 2-1/2 inch (64 mm) square galvanized steel speed clips (washers).
d.
Turn down or cut off exposed pin ends.
 
** NOTE TO SPECIFIER ** The wrapping technique outlined in the following sentence is optional for vertical duct runs.
 
9.
Vertical Ductwork: Apply insulation in continuous length parallel to vertical length of duct with overlaps minimum of 6 inches (152 mm) from duct corners. Space pins 8 inches (203 mm) on center at centerline of vertically oriented overlaps and on maximum 12 inch (305 mm) columns.
D.
Duct Insulation (Dryer Exhaust Ducts):
1.
A single-layer system applied directly on to the surface of the duct or combustible item.
2.
Dryer Applications:
a.
The width of the 16 inches (406 mm) product is tailored to provide a 1 inch (25 mm) longitudinal compression joint or overlap on a 4 inch (102 m) dryer duct. Adjacent pieces of insulation shall be installed with a 1 inch (25 mm) perimeter compression joint or material overlap. To temporarily secure the insulation, optional use of foil tape is permitted. Seal all cut edges with aluminum foil tape to ensure there is no exposed fiber. 18 gauge steel tie wire shall be utilized for permanent attachment. Locate the wire 1/2 inch (13 mm) from the blanket edge and on maximum 12 inches (305 mm) centers. Twist tension the wire to firmly hold the wrap system in place, but not so tight as to cut or damage the blanket.
3.
Plenum Applications:
a.
For plastic items, cut the insulation to a length sufficient to wrap around the combustible item(s) plus provide a minimum 1 inch (13 mm) perimeter overlap. Seal all cut edges with aluminum foil tape to ensure there is no exposed fiber. The adjacent piece of insulation shall be long enough to wrap around the circumference of the item plus a 1 inch (13 mm) perimeter overlap. This piece shall also be installed with a minimum 1 inch (13 mm) longitudinal overlap on to the previously installed piece.
b.
To temporarily secure the insulation, optional use of foil tape is permitted. 24 gauge steel tie wire or 1/2 inch (13 mm) steel banding should be utilized as a permanent attachment. Locate the wire or banding 1/2 inch (13 mm) from the blanket edge and on 11-1/2 inches (292 mm) centers. Twist tension the wire or tighten banding to firmly hold the wrap system in place, but not so tight as to cut or damage the blanket. Hand tightening of wire is adequate.
 
** NOTE TO SPECIFIER ** Delete if not required. Select single or two layer application.
 
E.
Cable Tray Insulation:
1.
A single-layer system applied directly on to the surface of the cable tray.
2.
A two-layer system applied directly on to the surface of the cable tray.
3.
To prevent material sagging on open cable trays (no lids), steel banding is installed around the cable perimeter prior to application of the insulation blanket. Banding is tightened to create a surface for the insulation blanket to rest upon. The use of wire mesh or a cable tray lid is also permitted.
 
** NOTE TO SPECIFIER ** Delete if not required.
 
F.
Blanket Insulation: Install per manufacturer's requirements to achieve performance rating required.
G.
Marine Blanket Installation:
1.
Available in a variety of thicknesses and densities. The material parameters chosen depend upon the specific application and the Fire Rating Class required. Comply with the current Certifications and details on tested systems and material components.
2.
Comply with manufacturer's installation requirements to achieve performance class and certification construction assembly.
3.4
ACCESS DOORS
A.
Field-Fabricated:
 
** NOTE TO SPECIFIER ** Delete article below if Ductmate Ultimate or F2 prefabricated access doors are specified. Retain article below for installation of field fabricated access doors.
 
1.
Cut and remove installed insulation to dimension 2 inches (51 mm) larger than opening.
2.
Seal cut edges of remaining insulation with aluminum foil tape.
3.
Cut access opening in duct.
4.
1/4 inch (6.4 mm) diameter threaded rod to corners of opening.
 
** NOTE TO SPECIFIER ** Use the following optional article to specify easy removal of insulation.
 
5.
Cover rods with hollow steel tubes.
6.
Cut 16 gauge cover plate with dimensions 2 inches (51 mm) larger than opening.
7.
Drill holes in cover plate to match rod pattern.
8.
Place 1/2 inch (12.7 mm) ceramic fiber or unfaced FyreWrap blanket gasket between duct and access door cover.
9.
Install cover over rods.
 
** NOTE TO SPECIFIER ** Specify a minimum of 4 pins for ducts with single layer insulation, and a minimum of 5 pins for ducts with a double layer of insulation. For the double layer system, the pins should not be spaced greater than at 12 inch (305 mm) centers.
 
10.
Single Layer: Weld 4 steel insulation pins to outside of door panel, 1 inch (25.4 mm) from corners.
11.
Double Layer: Weld 5 steel insulation pins to outside of door panel, 1 inch (25.4 mm) from corners.
12.
Cut first insulation piece to size of access door, seal cut edges with aluminum foil tape and install over pins within cutout area.
13.
Cut second insulation piece with dimensions 2 inches (51 mm) larger than first piece, seal cut edges with aluminum foil tape and install over pins.
 
** NOTE TO SPECIFIER ** Include the following article for access door openings in ducts where the 2-layer system has been used. Delete if not required.
 
14.
Cut third insulation piece (for 2-Layer grease duct systems only) with dimensions 2 inches (51 mm) larger than second piece, seal cut edges with aluminum foil tape and install over pins.
15.
Place washers on pins and bend over excess pin lengths.
16.
Place washers on threaded rods and secure with nuts.
B.
Pre-fabricated: Ductmate Industries - Ultimate and F-2 access door to be prefabricated from 16 gauge steel and installed as one unit.
 
** NOTE TO SPECIFIER ** Duct Support Systems: FyreWrap insulation is not required to protect most support components. Refer to manufacturer's Product Information Sheets for additional details and requirements.
** NOTE TO SPECIFIER ** Regular maintenance of Unifrax FyreWrap is not required when installed as per installation instructions. The following article specifies repair procedures should damage occur
 
3.5
MAINTENANCE
A.
Cut banding or insulation washers on damaged blanket areas and remove.
B.
Cut and remove damaged blanket.
C.
Cut new blanket piece with exact dimensions as that removed and install on ductwork in same configuration as previously used in compliance with required material overlaps and attachment methods.
D.
Ensure same minimum overlap is created.
E.
Replace permanent attachment.
3.6
FIELD QUALITY CONTROL
 
** NOTE TO SPECIFIER ** Use the following Articles only when manufacturer's field services are desired to verify the quality of the installed components. Establish the number and duration of periodic site visits required by Manufacturer and specify below. Consult Manufacturer for services required. Delete if field services are not required.
 
A.
Have manufacturer of products supplied under this Section review Work involved in handling, installation/application and protection of its products, and submit written reports in acceptable format to verify compliance of Work with Contract.
B.
Schedule site visits to review Work as installation is about to begin.
3.7
PROTECTION
A.
Protect installed products until completion of project.
B.
Touch-up, repair or replace damaged products before Substantial Completion.
END OF SECTION