ASTM C1546-02(2008)e1

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
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Designation: C1546 − 02(Reapproved 2008)
Standard Guide for
Installation of Gypsum Products in Concealed Radiant
Ceiling Heating Systems
This standard is issued under the fixed designation C1546; 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.
´ NOTE—The units statement in new subsection 1.2 was added editorially in July 2008.
1. Scope C841 Specification for Installation of Interior Lathing and
2 Furring
1.1 This guide provides information for trades installing
C842 Specification forApplication of Interior Gypsum Plas-
gypsum products in conjunction with a concealed radiant
ter
ceiling heating system constructed from thin sheet flexible
radiant heating panels, and for the installation of gypsum
3. Terminology
products after repair of existing concealed radiant ceiling
heating systems constructed from heating cable or thin sheet 3.1 Definitions:
flexible radiant heating panels.
3.1.1 concealed radiant heating system, n—a system that
operates by heating the building materials that conceal the heat
1.2 The values stated in inch-pound units are to be regarded
source, which in turn transfer the heat into the heated area by
as standard. No other units of measurement are included in this
radiant emission.
standard.
3.1.2 facing, n—the finished surface layer through which
1.3 This guide does not purport to address any aspect of
heat is transferred into a heated area.
concealedradiantheatingsystemdesignorperformance,andis
limited to the proper installation of gypsum products specified
3.1.3 flexible radiant heating panel, n—a thin sheet heating
for use in a concealed radiant ceiling heating system.
element intended to produce heat when connected to an
electrical supply.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.1.4 furring, n—spacer elements added to a building struc-
responsibility of the user of this standard to establish appro-
ture to facilitate fastening of gypsum panel products.
priate safety and health practices and determine the applica-
3.1.5 gypsum product, n—building material intended for use
bility of regulatory requirements prior to use.
in radiant heated ceiling construction, containing gypsum in its
1.5 The text of this standard references notes and footnotes
composition or construction.
which provide explanatory material. These notes and footnotes
3.1.5.1 Discussion—The gypsum products most often asso-
shall not be considered as requirements of the standard.
ciated with radiant heating systems are gypsum board and
gypsum plaster.
2. Referenced Documents
3.1.6 heating cable, n—an electrically insulated cable in-
2.1 ASTM Standards:
tended to produce heat when connected to an electrical supply.
C840 SpecificationforApplicationandFinishingofGypsum
Board
4. Significance and Use
This guide is under the jurisdiction of ASTM Committee C11 on Gypsum and 4.1 The purpose of this guide is to provide information to
Related Building Materials and Systems and is the direct responsibility of
gypsum product installers for the avoidance of hazards asso-
Subcommittee C11.03 on Specifications for the Application of Gypsum and Other
ciated with the installation of gypsum products adjacent to, or
Products in Assemblies.
surrounding, electric heating components and conductors; and
CurrenteditionapprovedMay1,2008.PublishedJuly2008.Originallyapproved
in 2002. Last previous edition approved in 2002 as C1546 – 02. DOI: 10.1520/
to avoid damage to gypsum products when used in conjunction
C1546-02R08E01.
with a concealed radiant heating system.
The first edition of this guide replaced Appendix X.7 of Specification
C840 - 99a.
4.2 The information given in this guide is applicable to
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
repair of existing cable heating systems and to new construc-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
tion of radiant heating systems constructed from flexible
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. radiant heating panels.
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C1546 − 02 (2008)
5. Summary of Guide 5.4.2 The application of gypsum plaster shall conform to
Specification C842 except as herein modified.
5.1 Heating System Design:
5.4.3 Filler added to gypsum plaster used to repair a heating
5.1.1 The heating system shall be designed to satisfy the
cable system, if any, shall be of sand or similar thermally
heating needs of the building and to work effectively with all
conductive material. Thermal insulating fillers such as ver-
building materials specified for use in the heating system
miculite or perlite, and foaming agents that impair heat transfer
installation.
shall not be used in plaster applied to radiant heating systems.
NOTE 1—The architect bears the responsibility of preparing and
5.4.4 Application of metal lath shall conform to Specifica-
correlatingcompleteplansandspecifications,andtoengageaprofessional
tion C841. Metal lath and fasteners installed for repair of a
familiar with the heating system to design the system to meet the
cable heating system shall not contact heating cables.
requirements of 5.1.1 and 5.1.
...