ASTM-F856 Standard Practice for Mechanical Symbols, Shipboard—Heating, Ventilation, and Air Conditioning (HVAC)

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Standard Practice for Mechanical Symbols, Shipboard—Heating, Ventilation, and Air Conditioning (HVAC)




1.1 This practice covers symbols used on heating, ventilation, and air conditioning (HVAC) detailed engineering drawings.

1.2 These symbols may be useful on contract and preliminary design drawings.

1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Significance and Use

2.1 When symbolic representation is required for an item not covered in this standard, the character of the symbol shall be adequately identified and shall be subject to one interpretation only. If necessary, a note shall be attached to the symbol for further clarity.

2.2 Symbolic representation does not require exact or scale layouts of the actual system. Therefore, the symbols may be used in all views of the system layout.


air conditioning; design symbols; engineering symbols; heating; HVAC; marine; ship; symbols; ventilation;; ICS Number Code 01.080.20 (Graphical symbols for use on specific equipment); 91.140.10 (Central heating systems); 91.140.30 (Ventilation and air-conditioning systems)

To find similar documents by ASTM Volume:

01.07 (Ships and Marine Technology)

To find similar documents by classification:

01.080.20 (Graphical symbols for use on specific equipment Standards included in this group shall also be included in other groups and/or sub-groups according to their subject)

91.140.10 (Central heating systems Including burners and boilers for central heating systems Heating appliances, see 97.100)

91.140.30 (Ventilation and air-conditioning systems Including ventilation ducts Ventilators and air-conditioners, see 23.120)

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Document Number


Revision Level

1997 R18 EDITION



Modification Type


Publication Date

Sept. 1, 2018

Document Type


Page Count

7 pages

Committee Number