1、Designation: F 856 97 (Reapproved 2004)An American National StandardStandard Practice forMechanical Symbols, ShipboardHeating, Ventilation, andAir Conditioning (HVAC)1This standard is issued under the fixed designation F 856; the number immediately following the designation indicates the year oforig
2、inal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of D
3、efense.1. Scope1.1 This practice covers symbols used on heating, ventila-tion, and air conditioning (HVAC) detailed engineering draw-ings.1.2 These symbols may be useful on contract and prelimi-nary design drawings.2. Significance and Use2.1 When symbolic representation is required for an itemnot co
4、vered in this standard, the character of the symbol shallbe adequately identified and shall be subject to one interpreta-tion only. If necessary, a note shall be attached to the symbolfor further clarity.2.2 Symbolic representation does not require exact or scalelayouts of the actual system. Therefo
5、re, the symbols may beused in all views of the system layout.3. Abbreviations3.1 The abbreviations (for use only in this practice) aredefined as follows:AF = axial fan,AFD = automatic fire damper with manual override,BD = balance damper,CC = cooling coil,CCW = counter clockwise,CE = convection heate
6、r, electric,CF = centrifugal fan,CS = convection heater, steam,CW = clockwise,EH = turret heater electric,EP = duct preheater, electric,ER = duct reheater, electric,EU = electric unit heater,F = filter,FA = flame arrester,FCA = fan coil assembly,FCU = fan coil unit,G = grille,GC = gravity cooling co
7、il,H = humidistat, humidifier,L = louver,M = motor,MFD = manual fire damper,NE = natural exhaust,NS = natural supply,R = return air,RO = remote operated,SFD = solenoid fire damper,SP = preheater, steam,SR = reheater, steam,SU = steam unit heater,T = thermostat,TE = tempered air, electric,TS = temper
8、ed air, steam,U = undercut,UC = unit cooler,V = volume, volumetric, andVC = volume control.4. Illustrations4.1 Illustrations for HVAC symbols are given in Figs. 1-4.5. Keywords5.1 air conditioning; design symbols; engineering symbols;heating; HVAC; marine; ship; symbols; ventilation1This practice is
9、 under the jurisdiction of ASTM Committee F25 on Ships andMarine Technology and is the direct responsibility of Subcommittee F25.11 onMachinery and Piping Systems.Current edition approved May 1, 2004. Published May 2004. Originallyapproved in 1983. Last previous edition approved in 1997 as F 856 97.
10、1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.NOTE 1“Class A is in reference to bulkhead classification as described in the Code of Federal Regulations, Title 46, Section 92.07-5. (Availablefrom Superintendent of Documents, U. S. G
11、overnment Printing Office, Washington, DC 20402.)FIG. 1 HVAC Symbols for Air Flow DuctsF 856 97 (2004)2FIG. 2 HVAC Symbols for Duct FittingsF 856 97 (2004)3FIG. 2 HVAC Symbols for Duct Fittings (continued)F 856 97 (2004)4NOTE 1This symbol is commonly referred to as a Breidert ventilator.FIG. 3 HVAC
12、Symbols for VentilatorsF 856 97 (2004)5NOTE 1This symbol is commonly referred to as a Gaylord hood.FIG. 4 HVAC Symbols for AppliancesF 856 97 (2004)6ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users
13、 of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every f
14、ive years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical
15、 committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).F 856 97 (2004)7
