ASTM F856-97(2008)
(Practice)Standard Practice for Mechanical Symbols, Shipboard—Heating, Ventilation, and Air Conditioning (HVAC)
Standard Practice for Mechanical Symbols, Shipboard—Heating, Ventilation, and Air Conditioning (HVAC)
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.
SCOPE
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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation: F856 − 97(Reapproved 2008) An American National Standard
Standard Practice for
Mechanical Symbols, Shipboard—Heating, Ventilation, and
Air Conditioning (HVAC)
ThisstandardisissuedunderthefixeddesignationF856;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope EH = turret heater electric,
EP = duct preheater, electric,
1.1 This practice covers symbols used on heating,
ER = duct reheater, electric,
ventilation, and air conditioning (HVAC) detailed engineering
EU = electric unit heater,
drawings.
F = filter,
1.2 These symbols may be useful on contract and prelimi-
FA = flame arrester,
nary design drawings.
FCA = fan coil assembly,
FCU = fan coil unit,
2. Significance and Use
G = grille,
2.1 When symbolic representation is required for an item
GC = gravity cooling coil,
not covered in this standard, the character of the symbol shall
H = humidistat, humidifier,
be adequately identified and shall be subject to one interpreta-
L = louver,
tion only. If necessary, a note shall be attached to the symbol
M = motor,
for further clarity.
MFD = manual fire damper,
NE = natural exhaust,
2.2 Symbolic representation does not require exact or scale
NS = natural supply,
layouts of the actual system. Therefore, the symbols may be
R = return air,
used in all views of the system layout.
RO = remote operated,
3. Abbreviations
SFD = solenoid fire damper,
SP = preheater, steam,
3.1 The abbreviations (for use only in this practice) are
SR = reheater, steam,
defined as follows:
SU = steam unit heater,
AF = axial fan,
T = thermostat,
AFD = automatic fire damper with manual override,
TE = tempered air, electric,
BD = balance damper,
TS = tempered air, steam,
CC = cooling coil,
U = undercut,
CCW = counter clockwise,
UC = unit cooler,
CE = convection heater, electric,
V = volume, volumetric, and
CF = centrifugal fan,
VC = volume control.
CS = convection heater, steam,
CW = clockwise,
4. Illustrations
1 4.1 Illustrations for HVAC symbols are given in Figs. 1-4.
This practice is under the jurisdiction of ASTM Committee F25 on Ships and
Marine Technology and is the direct responsibility of Subcommittee F25.11 on
Machinery and Piping Systems. 5. Keywords
Current edition approved Nov. 1, 2008. Published December 2008. Originally
5.1 air conditioning; design symbols; engineering
...
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