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ASTM_C_1546_-_02_2014.pdf
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TM_C_1546_ _02_2014
Designation:C154602(Reapproved 2014)Standard Guide forInstallation of Gypsum Products in Concealed RadiantCeiling Heating Systems1This standard is issued under the fixed designation C1546;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide2provides information for trades installinggypsum products in conjunction with a concealed radiantceiling heating system constructed from thin sheet flexibleradiant heating panels,and for the installation of gypsumproducts after repair of existing concealed radiant ceilingheating systems constructed from heating cable or thin sheetflexible radiant heating panels.1.2 The values stated in inch-pound units are to be regardedas standard.No other units of measurement are included in thisstandard.1.3 This guide does not purport to address any aspect ofconcealed radiant heating system design or performance,and islimited to the proper installation of gypsum products specifiedfor use in a concealed radiant ceiling heating system.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory requirements prior to use.1.5 The text of this standard references notes and footnoteswhich provide explanatory material.These notes and footnotesshall not be considered as requirements of the standard.2.Referenced Documents2.1 ASTM Standards:3C840 Specification forApplication and Finishing of GypsumBoardC841 Specification for Installation of Interior Lathing andFurringC842 Specification for Application of Interior Gypsum Plas-ter3.Terminology3.1 Definitions:3.1.1 concealed radiant heating system,na system thatoperates by heating the building materials that conceal the heatsource,which in turn transfer the heat into the heated area byradiant emission.3.1.2 facing,nthe finished surface layer through whichheat is transferred into a heated area.3.1.3 flexible radiant heating panel,na thin sheet heatingelement intended to produce heat when connected to anelectrical supply.3.1.4 furring,nspacer elements added to a building struc-ture to facilitate fastening of gypsum panel products.3.1.5 gypsum product,nbuilding material intended for usein radiant heated ceiling construction,containing gypsum in itscomposition or construction.3.1.5.1 DiscussionThe gypsum products most often asso-ciated with radiant heating systems are gypsum board andgypsum plaster.3.1.6 heating cable,nan electrically insulated cable in-tended to produce heat when connected to an electrical supply.4.Significance and Use4.1 The purpose of this guide is to provide information togypsum product installers for the avoidance of hazards asso-ciated with the installation of gypsum products adjacent to,orsurrounding,electric heating components and conductors;andto avoid damage to gypsum products when used in conjunctionwith a concealed radiant heating system.4.2 The information given in this guide is applicable torepair of existing cable heating systems and to new construc-tion of radiant heating systems constructed from flexibleradiant heating panels.5.Summary of Guide5.1 Heating System Design:1This guide is under the jurisdiction of ASTM Committee C11 on Gypsum andRelated Building Materials and Systems and is the direct responsibility ofSubcommittee C11.03 on Specifications for the Application of Gypsum and OtherProducts in Assemblies.Current edition approved April 1,2014.Published April 2014.Originallyapproved in 2002.Last previous edition approved in 2008 as C1546 02(2008)1.DOI:10.1520/C1546-02R14.2The first edition of this guide replaced Appendix X.7 of SpecificationC840-99a.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.1.1 The heating system shall be designed to satisfy theheating needs of the building and to work effectively with allbuilding materials specified for use in the heating systeminstallation.NOTE1The architect bears the responsibility of preparing andcorrelating complete plans and specifications,and to engage a professionalfamiliar with the heating system to design the system to meet therequirements of 5.1.1 and 5.1.2.5.1.2 The heating system shall be designed so that a gypsumproduct is not exposed to a temperature more than 125F(52C)for periods of time sufficient to cause calcination.NOTE2The foregoing requirement is intended to provide guidance toheating system designers,consisten

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