230713_Duct_Insulation_GS

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					                               [SUBMITTAL INFORMATION]
IF THE HIDDEN GUIDE SPECIFICATION CONVENTIONS DO NOT APPEAR PRECEEDING THIS
NOTE, TURN THEM ON AS FOLLOWS.

FOR MICROSOFT WORD 2000 and 2003, CLICK ON SHOW/HIDE ICON IN MENU BAR OR CHOOSE
TOOLS IN MENU BAR. THEN CLICK OPTIONS, VIEW TAB, UNDER FORMATTING MARKS, CHECK
HIDDEN TEXT.

FOR MICROSOFT WORD 2007, CLICK ON MICROSOFT OFFICE ICON LOCATED IN UPPER LEFT
CORNER OF MENU BAR. CLICK ON WORD OPTIONS AT BOTTOM OF DROP DOWN. THEN CLICK
ON DISPLAY. CHECK THE HIDDEN TEXT BOX.

FOR MICROSOFT OFFICE 2010, CLICK ON FILE BUTTON LOCATED IN UPPER LEFT CORNER OF
MENU BAR. IN THE DROP DOWN, CLICK ON OPTIONS, AND A WORD OPTIONS BOX WILL
APPEAR. CLICK ON DISPLAY. CHECK THE HIDDEN TEXT BOX.

THE GUIDE SPECIFICATION CONVENTIONS SHOULD NOW BE VISIBLE IN THE DOCUMENT.
(Delete this note before printing.)

                                            SECTION 23 07 13

                                           DUCT INSULATION
                                    (Edited from DeCA June 2011 Design Criteria)



PART 1 - GENERAL


1.1        SUMMARY

      A.   Section Includes:

           1.    Ductwork insulation.
           2.    Duct Liner.
           3.    Jackets.

      B.   Related Sections:

           1.    Division 01Section Mechanical, Refrigeration, Food Service Equipment and Electrical
                 Coordination.
           2.    Division 01 Section Quality Control.
           3.    Division 01 Section Closeout Procedures.
           4.    Division 23 Section Metal Ducts.


1.2        QUALITY CONTROL

      A.   The following publications form a part of this Specification to the extent they are applicable:

           1.    Division 01 Section Quality Control.
           2.    ASTM C553 - Standard Specification for Mineral Fiber Blanket Thermal Insulation for
                 Commercial and Industrial Applications.
           3.    ASTM C612 - Standard Specification for Mineral Fiber Block and Board Thermal Insulation.


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           4.    ASTM C921 - Standard Practice for Determining the Properties of Jacketing Materials for
                 Thermal Insulation.
           5.    ASTM C1071 - Standard Specification for Fibrous Glass Duct Lining Insulation Thermal and
                 Sound Absorbing Material.
           6.    ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building Materials.
           7.    ASTM E96 - Standard Test Methods for Water Vapor Transmission of Materials.
           8.    ASTM E162 - Standard Test Method for Surface Flammability of Materials Using a Radiant
                 Heat Energy Source.
           9.    ASTM G21 - Standard Practice for Determining Resistance of Synthetic Polymeric Materials
                 to Fungi.
           10.   NAIMA National Insulation Standards.
           11.   NFPA 255 - Standard Method of Test of Surface Burning Characteristics of Building
                 Materials.
           12.   ASTM E119 - Standard Test Methods for fire Test of Building Construction and Materials.
           13.   ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building Materials.
           14.   ASTM E136 - Standard test Method for the Behavior of Materials in a Vertical Tube Furnace
                 at 750 deg C (Non-Combustibility Test).
           15.   ASTM E814 - Standard Test Method for Fire Tests of Through Penetrations Firestops.
           16.   ASTM C518 - Standard Test Method for Steady – State heat Flux Measurements and
                 Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus.
           17.   ASTM C411 - Standard Test Method for Hot Surface Performance of High Temperature
                 Thermal Insulation.
           18.   International Code Council: ICC ES – Evaluation Report ER-5899 (FyreWrap 1.5 and MAX
                 2.0 Duct Insulation).
           19.   International Code Council: ICC ES – Evaluation Report ER-6644-2 (Fire Containment =
                 Elements of BGuilding Construction Part 2: Kitchen Extract Ducts).
           20.   ISO 6944-1985 - Fire Resistance of Ventilation Ducts.
           21.   UL 723 - Surface Burning Characteristics of Building Materials.
           22.   UL 1479 - Fire Tests of Through Penetrations Firestops.
           23.   UL 263 - Fire Tests of Building Construction and Materials.
           24.   UL 1978 (Section 12 & 13) Standard for Safety Grease Ducts.
           25.   UL YYET - Grease Duct Enclosures, File R14514.
           26.   UL XHEZ - Through-Penetration Firestop Systems C-AJ-7007, C-AJ-7048.
           27.   UL 1887 - Standard for Safety Fire Test of Plastic Sprinkler Pipe for Visible Flame and
                 Smoke Characteristics.


1.3        SUBMITTALS

      A.   Submittals for Review:

           1.    Division 01 Section Quality Control - Submittals: Procedures for submittals.
           2.    Product Data: Provide product data for each type of mechanical insulation identifying k-
                 value, thickness, jackets (factory and field applied) and accessories.
           3.    LEED Submittal:

                 a.    Product Data for Credit EQ 4.1:    For adhesives and sealants, including printed
                       statement of VOC content.


1.4        DELIVERY, STORAGE, AND HANDLING

      A.   Division 01 Section Environmental Management.


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      B.   Deliver materials to site in original factory packaging, labeled with manufacturer's identification,
           including product density and thickness.

      C.   Store insulation in original wrapping and protect from weather and construction traffic.

      D.   Protect insulation against dirt, water, chemical, and mechanical damage.

      E.   Maintain ambient temperatures and conditions required by manufacturers of adhesives, mastics,
           and insulation cements.

      F.   Maintain temperature during and after installation for minimum period of 24 hours.


1.5        QUALIFICATIONS

      A.   Manufacturer Qualifications: Company specializing in manufacturing the Products specified in this
           Section with minimum 5 years experience.

      B.   Applicator Qualifications: Company specializing in performing the work of this Section with
           minimum 3 years experience approved by manufacturer.


1.6        REGULATORY REQUIREMENTS

      A.   Conform to the requirements of:

           1.    International Mechanical code.
           2.    NFPA 96.


PART 2 - PRODUCTS


2.1        GLASS FIBER, FLEXIBLE

      A.   Insulation: ASTM C553; flexible, noncombustible blanket.

           1.    'K' Value: ASTM C518, 0.27 at 75 deg F, at compressed thickness.
           2.    Maximum service temperature: 250 deg F.
           3.    Maximum moisture absorption: 0.20 percent by volume.

      B.   Vapor Barrier Jacket:

           1.    Kraft paper with glass fiber yarn and bonded to aluminized film.
           2.    Moisture vapor transmission: ASTM E96; 0.02 perm.
           3.    Secure with pressure sensitive tape.

      C.   Vapor Barrier Tape:

           1.    Kraft paper reinforced with glass fiber yarn and bonded to aluminized film, with pressure
                 sensitive rubber based adhesive, UL rated and 25/20 rated.

      D.   Tie Wire: Soft annealed galvanized steel, 16 gage.

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2.2        GLASS FIBER, RIGID

      A.   Insulation: ASTM C612; rigid, noncombustible blanket.

           1.    'K' value: ASTM C518, 0.23 at 75 deg F.
           2.    Maximum service temperature: 250 deg F.
           3.    Maximum moisture absorption: 0.20 percent by volume.
           4.    Density: 3.0 lb/cu ft.

      B.   Vapor Barrier Jacket:

           1.    Kraft paper with glass fiber yarn and bonded to aluminized film.
           2.    Moisture vapor transmission: ASTM E96; 0.04 perm.
           3.    Secure with pressure sensitive tape.

      C.   Vapor Barrier Tape:

           1.    Kraft paper reinforced with glass fiber yarn and bonded to aluminized film, with pressure
                 sensitive rubber based adhesive.


2.3        GLASS FIBER DUCT LINER

      A.   Insulation: ASTM C1071; flexible or rigid, noncombustible blanket with poly vinyl acetate polymer or
           acrylic polymer meeting ASTM G21 impregnated surface and edge coat.

           1.    ‘K’ Value: ASTM C1071 or ASTM C518, maximum 0.31 at 75 deg F.
           2.    Maximum Service Temperature: 250 deg F.
           3.    Maximum Velocity on Coated Air Side: 5,000 fpm.
           4.    Minimum Noise Reduction Criteria: ASTM C1071 0.45 for 1 inch thickness.

      B.   Adhesive:

           1.    Waterproof, ASTM E162 fire-retardant type.

      C.   Liner Fasteners: Galvanized steel, self-adhesive pad, impact applied or welded with integral press-
           on head.

      D.   Vapor Barrier Tape:

           1.    Kraft paper reinforced with glass fiber yarn and bonded to aluminized film, with pressure
                 sensitive rubber based adhesive.


2.4        CALCIUM SILICATE (CS) BLOCKS - FOR SURFACES 400 DEG. F. AND HIGHER.

      A.   Molded rigid sections of hydrous calcium silicate rated at 1200 deg F, 15 pcf, 0.6 Btu-in./hr.-sq. ft -
           deg F at 500 deg F. (ASTM C177), ASTM C533, 160 psi compressive strength.

      B.   Insulate each item completely.




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2.5        RIGID EXPANDED POLYISOCYANURATE - DOW TRYMER 2000 OR EQUAL

      A.   Insulation: ASTM C591; rigid, noncombustible board.

           1.    ‘K’ (‘Ksi’) Value: ASTM C518, 0.168 at 75 deg F.
           2.    Maximum service temperature: 250 deg F.
           3.    Maximum moisture absorption: 0.20 percent by volume.
           4.    Flame Spread/smoke developed: 25/50.

      B.   Vapor Barrier Jacket:

           1.    High density polyethylene with embossed aluminum outer layer and self-adhesive rubberized
                 asphalt film with release paper. Childer’s MFM Building Products corp. Flexclad 400 or
                 equal.
           2.    Moisture vapor transmission: ASTM E96; 0.02 perm.

      C.   Mastic:

           1.    Butyl elastomer mastic, compatible with insulation. Foster 9544 or equal.


2.6        FIRE BARRIER SYSTEMS FOR KITCHEN EXHAUST DUCTS

      A.   Unifrax FyreWrap MAX 2.0 Duct Insulation or equal.

           1.    Material: High temperature soluble fiber blanket encapsulated in scrim reinforced foil.
           2.    Type and Size: Roll 2 inches by 24 inches by 20 LF or 2 inches by 48 inches by 20 LF.
           3.    Color: Aluminum silver.
           4.    Weight: 1.33 lb/sq. ft.
           5.    Surface Burning Characteristics (ASTM E-84):
           6.    Combustibility (ASTM E-136): Noncombustible.
           7.    Fire Resistance Shaft Rating equivalent to 2 hours.


PART 3 - EXECUTION


3.1        EXAMINATION

      A.   Division 01 Section Administrative Requirements: Verification of existing conditions before starting
           work.

      B.   Verify that ductwork has been tested before applying insulation materials.

      C.   Verify that surfaces are clean, foreign material removed, and dry.


3.2        INSTALLATION

      A.   General:

           1.    Division 01 Section Quality Control: Manufacturer's instructions.


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     2.     Where replacement is indicated, remove existing insulation, allow duct to warm above dew
            point and dry thoroughly before applying new insulation. Coordinate with the Commissary
            Officer to schedule work for hours when the Commissary is closed.
     3.     Install in accordance with NAIMA National Insulation Standards.
     4.     Supply and return air ductwork - [New and existing where required]:

            a.     Provide insulation with vapor barrier jackets.
            b.     Continue insulation through walls, sleeves, hangers, and other duct penetrations.
            c.     Insulate entire system including fittings, joints, flanges, fire dampers, flexible
                   connections, and expansion joints.
            d.     Return and transfer ducts may be rigid round factory preinsulated ducts.

     5.     Exterior Applications: Provide duct liner in addition to insulation with vapor barrier jacket.
            Cover with caulked aluminum jacket with seams located on bottom side of horizontal duct
            section.

B.   Installation - Glass Fiber:

     1.     External Duct Insulation Application:

            a.     Secure insulation with vapor barrier with wires and seal jacket joints with vapor barrier
                   adhesive or tape to match jacket. Pin insulation on sides and bottom with adhesive
                   attached pins 18 inches o.c.
            b.     Secure insulation without vapor barrier with staples, tape, or wires.
            c.     Install without sag on underside of ductwork. Use adhesive or mechanical fasteners
                   where necessary to prevent sagging. Lift ductwork off trapeze hangers and insert
                   spacers.
            d.     Seal vapor barrier penetrations by mechanical fasteners with vapor barrier adhesive.
            e.     Stop and point insulation around access doors and damper operators to allow
                   operation without disturbing wrapping.

C.   Duct And Plenum Liner Application:

     1.     Adhere insulation with adhesive for 100 percent coverage.
     2.     Secure insulation with mechanical liner fasteners 18 inches on center.
     3.     Seal and smooth joints. Seal and coat transverse joints.
     4.     Seal liner surface penetrations with adhesive.
     5.     Duct dimensions indicated are net inside dimensions required for air flow. Increase duct size
            to allow for insulation thickness.

D.   Installation Glass Fiber Ductwork Insulation Schedule:

     DUCTWORK                                          THICKNESS
                                                       Inch
     Combustion Air Duct                               1.5
     Outside Air Intake Ducts                          2
     Mixed air Plenums                                 1.5
     Ventilation Equipment Casings                     Factory Pre-insulated
     Supply Ducts                                      1.5 covering on round, rectangular or flat oval ducts.
     Other Ducts and Plenums                           As noted on the Drawings.
     Rooftop HVAC Units                                8 inches - 3 lbs density rigid insulation inside the
                                                       roof curb as detailed on the Drawings.
     Return Air Ducts                                  1-1/2 inches covering
     Transfer Ducts                                    1 inch liner

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                                       DUCT INSULATION
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     Factory Pre-insulated Ducts                       None
     Diffusers                                         1-1/2 inches covering on back of diffuser shell
     Where duct is in an equipment room or otherwise exposed to view, provide rigid insulation.
     **Ceiling spaces above air conditioned spaces which have lay-in ceilings and are sealed against
     outside air infiltration are considered to be un air conditioned and insulation is required.
     **Where existing insulation is damaged as a result of this work, repair to match existing.

E.   Installation Calcium Silicate:

     1.    Calcium silicate: Install in 2 layers, with joints tightly butted and staggered. Secure with No.
           16 gauge stainless steel wire on square or rectangular surfaces - 1/2-inch by 0.015
           galvanized steel bands on 12 inches maximum centers on cylindrical areas. Where required,
           provide studs, clips or angles as anchors for wire and bands. Secure insulation with
           circumferential steel straps.
     2.    Finish: 1 in. wire mesh with 1/4-inch thick Keene Super-Powerhouse Finishing Cement and
           fiberglass cloth jacket. Reinforce all corners with corner bead.
     3.    Taper insulation to nameplates, cleanouts, manholes, etc. Leave nameplates exposed.
     4.    Insulate kitchen hood exhaust ducts with 2 inches of calcium silicate.

F.   Installation Rigid Expanded Polyisocyanuarate:

     1.    [Secure insulation with full coverage of adhesive and seal "butter" insulation joints
           with vapor barrier adhesive. Pin insulation on sides and bottom with adhesive
           attached pins 18 inches oc. Trim pins flush with insulation before applying vapor
           barrier jacket.]
     2.    Secure insulation without staples, tape, or wires.
     3.    Lift ductwork off trapeze hangers and install insulation and vapor barrier continuously past
           hanger.
     4.    Stop and point insulation around access doors and damper operators to allow operation
           without disturbing wrapping.
     5.    Apply self adhesive vapor barrier jacket continuously overlapping joints 3 inches. Lap vapor
           barrier 3 inches minimum onto hangers, bare metal where reinforcing is to be covered.

G.   Installation Fire Barrier Systems for Kitchen Exhaust:

     1.    Install in strict accordance with manufacturer’s instructions and as in tested assemblies.


                                       END OF SECTION




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