ASTM C1668-13a

Standard Specification for Externally Applied Reflective Insulation Systems on Rigid Duct in Heating, Ventilation, and Air Conditioning (HVAC) Systems

ABSTRACT
This specification establishes the physical and performance requirements, and the corresponding test methods, for the evaluation of reflective insulation systems that are applied externally to rigid ducts in heating, ventilation, and air conditioning (HVAC) systems operating at specified temperatures. The products covered here are classified into five types according to the substrate material used, namely: Type A, product with polyethylene foam substrate; Type B, product with polyethylene bubble pack substrate; Type C, product with fiberglass substrate; Type D, product with polyester fiber substrate; and Type E, product with kraft paper substrate. Properly sampled specimens shall undergo test procedure to examine their conformance with the following requirements: emittance; water vapor permeance; surface burning characteristics; aging resistance; adhesive performance (bleeding and delamination); pliability; fungi resistance; thermal resistance; and hot-surface performance.
SCOPE
1.1 This specification covers the requirements and physical properties of reflective insulation systems applied externally to Rigid Heating, Ventilation, and Air Conditioning (HVAC) duct systems operating at or below 250ºF (121.1 °C). These insulation systems consist of one or more low-emittance surfaces, such as metallic foil or metallic deposits, mounted on substrates to produce reflective air spaces. Reflective insulation systems derive thermal performance from surfaces with an emittance of no greater than 0.1 facing enclosed air spaces.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-Oct-2013
• ICS: 91.140.30 - Ventilation and air-conditioning systems
• Technical Committee: C16 - Thermal Insulation
• Drafting Committee: C16.21 - Reflective Insulation

Relations

• Replaces: ASTM C1668-13 - Standard Specification for Externally Applied Reflective Insulation Systems on Rigid Duct in Heating, Ventilation, and Air Conditioning (HVAC) Systems
• Effective Date: 01-Nov-2013
• Replaced By: ASTM C1668-19 - Standard Specification for Externally Applied Reflective Insulation Systems on Rigid Duct in Heating, Ventilation, and Air Conditioning (HVAC) Systems
• Effective Date: 15-Apr-2019

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C1668 −13a
Standard Specification for
Externally Applied Reflective Insulation Systems on Rigid
Duct in Heating, Ventilation, and Air Conditioning (HVAC)
1
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.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope C1258Test Method for ElevatedTemperature and Humidity
Resistance of Vapor Retarders for Insulation
1.1 This specification covers the requirements and physical
C1338Test Method for Determining Fungi Resistance of
properties of reflective insulation systems applied externally to
Insulation Materials and Facings
Rigid Heating,Ventilation, andAir Conditioning (HVAC) duct
C1371Test Method for Determination of Emittance of
systems operating at or below 250ºF (121.1 °C). These
Materials Near Room Temperature Using Portable Emis-
insulation systems consist of one or more low-emittance
someters
surfaces, such as metallic foil or metallic deposits, mounted on
E84Test Method for Surface Burning Characteristics of
substratestoproducereflectiveairspaces.Reflectiveinsulation
Building Materials
systems derive thermal performance from surfaces with an
E96/E96MTest Methods for Water Vapor Transmission of
emittance of no greater than 0.1 facing enclosed air spaces.
Materials
1.2 The values stated in inch-pound units are to be regarded
E2231Practice for Specimen Preparation and Mounting of
as standard. The values given in parentheses are mathematical
Pipe and Duct Insulation Materials to Assess Surface
conversions to SI units that are provided for information only
Burning Characteristics
and are not considered standard.
2.2 Other Test Method:
1.3 This standard does not purport to address all of the
TAPPIStandardT-512sp-02CreasingofFlexiblePackaging
3
safety concerns, if any, associated with its use. It is the
Material Paper Specimens for Testing
responsibility of the user of this standard to establish appro-
3. Terminology
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
3.1 Definitions:
3.1.1 Unless otherwise noted, the terms used in this speci-
2. Referenced Documents
fication conform to Terminology C168.
2
2.1 ASTM Standards:
3.2 Definitions of Terms Specific to This Standard:
C168Terminology Relating to Thermal Insulation
3.2.1 HVAC ducts—as pertaining to this standard, ducts
C335Test Method for Steady-State HeatTransfer Properties
having rigid rectangular or circular cross-section used to
of Pipe Insulation
transfer air from the air handling equipment to the conditioned
C390Practice for Sampling and Acceptance of Thermal
space and return.
Insulation Lots
3.2.2 insulation spacers—materialusedtoformenclosedair
C411Test Method for Hot-Surface Performance of High-
spaces that are interior to the reflective insulation system.
Temperature Thermal Insulation
C1045Practice for Calculating Thermal Transmission Prop- 3.2.3 reflective insulation—thermal insulation consisting of
erties Under Steady-State Conditions one or more low emittance surfaces, bounding one or more
enclosed air space(s). C168
1
This specification is under the jurisdiction of ASTM Committee C16 on
4. Classification
Thermal Insulation and is the direct responsibility of Subcommittee C16.21 on
Reflective Insulation.
4.1 Products covered by this specification are classified
Current edition approved Nov. 1, 2013. Published January 2014. Originally
according to the substrate material and have the physical
approved in 2009. Last previous edition approved in 2013 as C1668–13. DOI:
properties as listed in Table 1.
10.1520/C1668–13A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. 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
1

---------------------- Page: 1 ----------------------
C1668−13a
TABLE 1 Classification Criteria
Type Type Type Type Type
Property
A B C D E
Emittance # # # # #
0.10 0.10 0.10 0.10 0.10
Max. Flame Spread Index 25 25 25 25 25
Max. Smoke Developed Index 50 50 50 50 50
Hot Surface Performance Min. Min. Min. Min. Min.
250ºF 250ºF 250ºF 250ºF 250ºF
Water Vapor Permeance 0.02 0.02 0.02 0.02 0.02
(perms) or less or less or less or less or less
4.1.1 Type A—Product with polyethylene foam substrate. 7.4.1 Afte
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C1668 − 13 C1668 − 13a
Standard Specification for
Externally Applied Reflective Insulation Systems on Rigid
Duct in Heating, Ventilation, and Air Conditioning (HVAC)
1
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
1.1 This specification covers the requirements and physical properties of reflective insulation systems applied externally to
Rigid Heating, Ventilation, and Air Conditioning (HVAC) duct systems operating at or below 250ºF (121.1 °C). These insulation
systems consist of one or more low-emittance surfaces, such as metallic foil or metallic deposits, mounted on substrates to produce
reflective air spaces. Reflective insulation systems derive thermal performance from surfaces with an emittance of no greater than
0.1 facing enclosed air spaces.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
C168 Terminology Relating to Thermal Insulation
C335 Test Method for Steady-State Heat Transfer Properties of Pipe Insulation
C390 Practice for Sampling and Acceptance of Thermal Insulation Lots
C411 Test Method for Hot-Surface Performance of High-Temperature Thermal Insulation
C1045 Practice for Calculating Thermal Transmission Properties Under Steady-State Conditions
C1258 Test Method for Elevated Temperature and Humidity Resistance of Vapor Retarders for Insulation
C1338 Test Method for Determining Fungi Resistance of Insulation Materials and Facings
C1371 Test Method for Determination of Emittance of Materials Near Room Temperature Using Portable Emissometers
E84 Test Method for Surface Burning Characteristics of Building Materials
E96/E96M Test Methods for Water Vapor Transmission of Materials
E2231 Practice for Specimen Preparation and Mounting of Pipe and Duct Insulation Materials to Assess Surface Burning
Characteristics
2.2 Other Test Method:
3
TAPPI Standard T-512 sp-02 Creasing of Flexible Packaging Material Paper Specimens for Testing
3. Terminology
3.1 Definitions:
3.1.1 Unless otherwise noted, the terms used in this specification conform to Terminology C168.
3.2 Definitions of Terms Specific to This Standard:
1
This specification is under the jurisdiction of ASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.21 on Reflective
Insulation.
Current edition approved May 1, 2013Nov. 1, 2013. Published June 2013January 2014. Originally approved in 2009. Last previous edition approved in 20122013 as
C1668–12.–13. DOI: 10.1520/C1668–13.10.1520/C1668–13A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from Technical Association of the Pulp and Paper Industry (TAPPI), 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
1

---------------------- Page: 1 ----------------------
C1668 − 13a
3.2.1 HVAC ducts—as pertaining to this standard, ducts having rigid rectangular or circular cross-section used to transfer air
from the air handling equipment to the conditioned space and return.
3.2.2 insulation spacers—material used to form enclosed air spaces that are interior to the reflective insulation system.
3.2.3 reflective insulation—thermal insulation consisting of one or more low emittance surfaces, bounding one or more enclosed
air space(s). C168
4. Classification
4.1 Products covered by this specification are classified according to the substrate material and have the physical properties as
listed in Table 1.
4.1.1 Type A—Product with polyethylene foam substrate.
4.1.2 Type B—Produc
...