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Significance and Use
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.
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.
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.
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)
UNSPSC Code 25110000(Marine transport)