|
DocuSign Envelope ID: 9826C043- 4C32- 49CD- A4CC- DC28ABAB7CE7
<br />SECTION 238100 - HVAC INSULATION
<br />PART 1 - GENERAL
<br />1.1 SUMMARY
<br />A. This section includes insulation specifications for heating, ventilating and air conditioning piping,
<br />ductwork and equipment.
<br />1.2 SUBMITTALS
<br />A. Product Data: For each type of product indicated.
<br />B. Shop Drawings:
<br />1. Detail application of protective shields, saddles, and inserts at hangers for each type of
<br />insulation and hanger.
<br />2. Detail insulation application at pipe expansion joints for each type of insulation.
<br />3. Detail insulation application at elbows, fittings, flanges, valves, and specialties for each type of
<br />insulation.
<br />4. Detail removable insulation at piping specialties, equipment connections, and access panels.
<br />5. Detail application of field - applied jackets.
<br />6. Detail application at linkages of control devices.
<br />7. Detail field application for each equipment type.
<br />C. Field quality - control reports.
<br />1.3 QUALITY ASSURANCE
<br />A. Fire - Test - Response Characteristics: Insulation and related materials shall have fire - test - response
<br />characteristics indicated, as determined by testing identical products per ASTM E 84, by a testing
<br />and inspecting agency acceptable to authorities having jurisdiction. Factory label insulation and
<br />jacket materials and adhesive, mastic, tapes, and cement material containers, with appropriate
<br />markings of applicable testing and inspecting agency.
<br />1. Insulation Installed Indoors: Flame- spread index of 25 or less, and smoke - developed index of
<br />50 or less.
<br />2. Insulation Installed Outdoors: Flame- spread index of 75 or less, and smoke - developed index
<br />of 150 or less.
<br />PART 2 - PRODUCTS
<br />2.1 INSULATION MATERIALS
<br />A. Materials or accessories containing asbestos will not be accepted.
<br />B. Use composite insulation systems (insulation, jackets, sealants, mastics, and adhesives) that have a
<br />flame spread rating of 25 or less and smoke developed rating of 50 or less, with the following
<br />exceptions:
<br />1. Pipe insulation which is not located in an air plenum may have a flame spread rating not over
<br />25 and a smoke developed rating no higher than 150.
<br />2.2 INSULATION AND JACKETS
<br />A. Manufacturers: Armacell, Certainteed, Manson, Childers, Dow, Extol, Fibrex, Halstead, H.B. Fuller,
<br />Imcoa, Johns Manville, Knauf, Owens - Corning, Partek, Pittsburgh Corning, Rubatex or approved
<br />equal.
<br />B. Insulating materials shall be fire retardant, moisture and mildew resistant, and vermin proof.
<br />Insulation shall be suitable to receive jackets, adhesives and coatings as indicated.
<br />2.3 FLEXIBLE FIBERGLASS INSULATION:
<br />A. Minimum nominal density of 0.75 lbs. per cu. ft., and thermal conductivity of not more than 0.3 at 75
<br />degrees F, rated for service to 250 degrees F.
<br />B. Foil- scrim -kraft vapor barrier jacket, factory applied to insulation, maximum permeance of .02 perms.
<br />2.4 RIGID FIBERGLASS INSULATION:
<br />A. Minimum nominal density of 3 lbs. per cu. ft., and thermal conductivity of not more than 0.23 at 75
<br />degrees F, minimum compressive strength of 25 PSF at 10% deformation, rated for service to 450
<br />degrees F.
<br />B. Piping: White kraft reinforced foil vapor barrier all service jacket, factory applied to insulation with a
<br />self - sealing pressure sensitive adhesive lap, maximum permeance of .02 perms and minimum beach
<br />puncture resistance of 50 units.
<br />C. Ductwork: Foil- scrim -kraft vapor barrier jacket, factory applied to insulation, maximum permeance of
<br />.02 perms.
<br />2.5 SEMI -RIGID FIBERGLASS INSULATION:
<br />A. Minimum nominal density of 3 lbs. per cu. ft., thermal conductivity of not more than 0.28 at 75
<br />degrees F, minimum compressive strength of 125 PSF at 10% deformation, rated for service to 450
<br />degrees F. Insulation fibers perpendicular to jacket and scored for wrapping cylindrical surfaces.
<br />B. White kraft reinforced foil vapor barrier all service jacket, factory applied to insulation with a maximum
<br />permeance of .02 perms and minimum beach puncture resistance of 50 units.
<br />2.6 CALCIUM SILICATE INSULATION:
<br />A. Rigid hydrous calcium silicate, ASTM C533, Type I, minimum dry density of 12.5 lbs. per cu. ft.,
<br />thermal conductivity of not more than 0.44 at 300 degrees F, maximum water absorption of 90% by
<br />volume, minimum compressive strength 140 psi at 5% deformation, rated for service range of 0
<br />degrees F to 1,200 degrees F,. Material to be visually coded or marked to indicate it is asbestos free.
<br />2.7 ELASTOMERIC INSULATION:
<br />A. Flexible closed cell, minimum nominal density of 5.5 lbs. per cu. ft., thermal conductivity of not more
<br />than 0.27 at 75 degrees F, minimum compressive strength of 4.5 psi at 25% deformation, maximum
<br />Reece, Noland & McElrath, Inc. 238100-1 Orange County Board of Elections
<br />Orange Co., NC 05/04/18
<br />
|