between the water heater inlet and the cold water supply shut-off valve.
The Contractor shall adjust the expansion tank air pressure as recommended
by the tank manufacturer to match incoming water pressure.
3.19
IDENTIFICATION SYSTEMS
3.19.1
Identification Tags
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NOTE: Delete when identification tags are not
considered necessary on small projects.
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Identification tags made of brass, engraved laminated plastic, or engraved
anodized aluminum, indicating service and valve number, shall be installed
on valves, except those valves installed on supplies at plumbing fixtures.
Tags shall be 35 mm 1-3/8 inch minimum diameter, and marking shall be
stamped or engraved. Indentations shall be black, for reading clarity.
Tags shall be attached to valves with No. 12 AWG, copper wire,
chrome-plated beaded chain, or plastic straps designed for that purpose.
3.19.2
Color Coding
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NOTE: Designer will coordinate color code marking
with Section 09900 PAINTS AND COATINGS. Color code
marking for piping not listed in Table I of Section
09900, will be added to the table.
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Color coding for piping shall be as specified in Section 09900 PAINTS AND
COATINGS.
3.19.3
Color Coding Scheme for Locating Hidden Utility Components
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NOTE: The Color Code Table will be developed to
suit the installation. The colors of metal disks
used in Army projects will be as directed by the
Facilities Engineer. Identification plate specified
in Section 09510 ACOUSTICAL CEILINGS will be deleted
if color coding scheme is specified.
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Scheme shall be provided in buildings having suspended grid ceilings. The
color coding scheme shall identify points of access for maintenance and
operation of operable components which are not visible from the finished
space and installed in the space directly above the suspended grid ceiling.
The operable components shall include valves, dampers, switches, linkages
and thermostats. The color coding scheme shall consist of a color code
board and colored metal disks. Each colored metal disk shall be
approximately 9.5 mm 3/8 inch in diameter and secured to removable ceiling
panels with fasteners. The fasteners shall be inserted into the ceiling
panels so that the fasteners will be concealed from view. The fasteners
shall be manually removable without tools and shall not separate from the
ceiling panels when panels are dropped from ceiling height. Installation
of colored metal disks shall follow completion of the finished surface on
which the disks are to be fastened. The color code board shall have the
approximate dimensions of 1 meter 3 foot width, 750 mm 2 foot 6 inch
SECTION 15405A
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