ASTM C1668-09

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Designation: C1668 – 09
Standard Specification for
Externally Applied Reflective Insulation Systems on Rigid
Duct in Heating, Ventilation, and Air Conditioning (HVAC)
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Systems
This standard is issued under the fixed designation C1668; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope C1338 Test Method for Determining Fungi Resistance of
Insulation Materials and Facings
1.1 This specification covers the requirements and physical
C1371 Test Method for Determination of Emittance of
properties of reflective insulation systems applied externally to
Materials Near Room Temperature Using Portable Emis-
Rigid Heating, Ventilation, andAir Conditioning (HVAC) duct
someters
systems operating at or below 250ºF (121.1 °C). These
E84 Test Method for Surface Burning Characteristics of
insulation systems consist of one or more low-emittance
Building Materials
surfaces, such as metallic foil or metallic deposits, mounted on
E96/E96M Test Methods for Water Vapor Transmission of
substratestoproducereflectiveairspaces.Reflectiveinsulation
Materials
systems derive their thermal performance from surfaces with
E2231 Practice for Specimen Preparation and Mounting of
an emittance of no greater than 0.1 facing enclosed air spaces.
Pipe and Duct Insulation Materials to Assess Surface
1.2 The values stated in inch-pound units are to be regarded
Burning Characteristics
as standard. The values given in parentheses are mathematical
2.2 Other Test Method:
conversions to SI units that are provided for information only
TAPPI Standard T-512 sp-02 Creasing of Flexible Packag-
and are not considered standard.
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ing Material Paper Specimens for Testing
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
3.1 Definitions:
priate safety and health practices and determine the applica-
3.1.1 Unless otherwise noted, the terms used in this speci-
bility of regulatory limitations prior to use.
fication conform to Terminology C168.
2. Referenced Documents 3.2 Definitions of Terms Specific to This Standard:
2 3.2.1 HVAC ducts—as pertaining to this standard, ducts
2.1 ASTM Standards:
having rigid rectangular or circular cross-section used to
C168 Terminology Relating to Thermal Insulation
transfer air from the air handling equipment to the conditioned
C335 Test Method for Steady-State Heat Transfer Proper-
space and return.
ties of Pipe Insulation
3.2.2 insulation spacers—material used to form enclosed
C390 Practice for Sampling and Acceptance of Thermal
air spaces that are interior to the reflective insulation system.
Insulation Lots
3.2.3 reflective insulation—thermal insulation consisting of
C411 Test Method for Hot-Surface Performance of High-
one or more low emittance surfaces, bounding one or more
Temperature Thermal Insulation
enclosed air space(s). C168
C1045 PracticeforCalculatingThermalTransmissionProp-
erties Under Steady-State Conditions
4. Classification
C1258 Test Method for Elevated Temperature and Humid-
4.1 Products covered by this specification are classified
ity Resistance of Vapor Retarders for Insulation
according to the substrate material and have the physical
properties as listed in Table 1.
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4.1.1 Type A—Product with polyethylene foam substrate.
This specification is under the jurisdiction of ASTM Committee C16 on
Thermal Insulation and is the direct responsibility of Subcommittee C16.21 on
4.1.2 Type B—Product with polyethylene bubble pack sub-
Reflective Insulation.
strate.
Current edition approved May 15, 2009. Published June 2009. DOI: 10.1520/
4.1.3 Type C—Product with fiberglass substrate.
C1668-09.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available from TechnicalAssociation of the Pulp and Paper Industry (TAPPI),
the ASTM website. 15 Technology Parkway South, Norcross, GA 30092, http://www.tappi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C1668 – 09
TABLE 1 Classification Criteria
test procedure in 10.5. Disregard bleeding at cut edges.
Property Type A Type B Type C Type D Type E Bleeding or delamination, shall be cause for rejection.
7.6 Pliability—Specimens tested in accordance with the
Emittance # 0.10 # 0.10 # 0.10 # 0.10 # 0.10
Max. Flame Spread Index 25 25
...