DIVISION 23
HVAC SYSTEMS IDENTIFICATIO N
PART 1 - GENERA L
01 .01 RELATED DOCUMENTS
A . Drawings and general provisions of the contract, including General and Supplementary
Conditions and Division 1 Specification sections, apply to work of this Section .
B . This Section is a Division 23 Basic Mechanical Materials and Methods Section and is part of each
Division 23 section making reference to identification devices specified herein .
01 .02 DESCRIPTION OF WOR K
A.
Extent of inechanical identification work required by this Section is indicated on drawings and/or
specified in other Division 23 sections .
B.
Types of identification devices specified in this Section include the following :
Painted Identification Materials
Plastic Pipe Markers
Plastic Duct Markers
Plastic Tap e
Valve Tags
Valve Schedule s
Engraved Plastic-Laminated Signs
Plastic Equipment Markers
Plasticized Tag s
C.
Mechanical identification furnished as part of factory-fabricated equipment is specified as part of
equipment assembly in other Division 23 sections .
D.
Refer to other Division 23 sections for identification requirements at central-station mechanical
control center ; not work of this Section .
01 .03 QUALITY ASSURANC E
A.
Manufacturer's Qualifications . Firms regularly engaged in the manufacture of identification
devices of types and sizes required whose products have been in satisfactory use in similar
service for not less than ten (10) years .
B.
Codes and Standards .
1.
ANSI Standards . Comply with ANSI A13 .1 for lettering size, length of color field, colors,
and viewing angles of identification devices .
01 .04 SUBMITTAL S
A.
Schedules . Submit a valve schedule for each piping system, typewritten and reproduced o n
8" x 10'h" bond paper. Tabulate valve numbers, piping system, system abbreviations (as shown
on tag), location of valve (room or space), and variations for identification (if any) . Mark by
special "flags," in the margin of the schedule, valves which are intended for emergency shutoff
and similar special uses .
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Living Units A, B, C at MCF St Cloud
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RECS Proj . No . 785C0027
DIVISION 23
HVAC SYSTEMS IDENTIFICATIO N
PART 2- PRODUCTS
.ACCEPTABLE
MANUFACTURERS
020
1
A.
Available Manufacturers . Subject to compliance with requirements, manufacturers offering
mechanical identification materials which may be incorporated in the work include, but are not
limited to, the following :
Allen Systems, Inc .
Brady (W .H.) Co . ; Signmark Div .
Industrial Safety Supply Co ., Inc .
Seton Name Plate Corp .
020
.MECHANICAL
2
IDENTIFICATION MATERIAL S
A.
General . Provide manufacturer's standard products of categories and types required for each
application as referenced in other Division 23 sections . Where more than a single type is
specified for application, selection is the installer's option, but provide single selection for each
product category .
.PAINTED
IDENTIFICATION MATERIAL S
020
3
A.
Stencils : Standard fiberboard stencils prepared for required applications, with letter sizes
generally complying with recommendations of ANSI A13 .1 for piping and similar applications .
Stencils shall have not less than 1" high letters .
B.
Stencil Paint : Standard exterior type stenciling enamel . The color shall be black or white (chosen
for the best contrast with the pipe or insulation), except as otherwise indicated ; either brushing
grade or pressurized spray-can form and grade of paint .
020
.PLASTIC
4
PIPE MARKERS
A.
Snap-On Type . Provide manufacturer's standard pre-printed, semi-rigid, snap-on, color-coded
pipe markers complying with ANSI A13 .1 .
B.
Pressure-Sensitive Type . Provide manufacturer's standard pre-printed, permanent adhesive,
color-coded, pressure-sensitive vinyl pipe markers complying with ANSI A13 .1 .
C.
Small Pipes . For external diameters less than 6" (including insulation if any), provide full-band
pipe markers extending 360° around pipe at each location, fastened by one of the following
methods :
1 . Snap-on application of pre-tensioned semi-rigid plastic pipe marker .
2 . Adhesive lap joint in pipe marker overlap .
3 . Laminated or bonded application of pipe marker to pipe (or insulation) .
4 . Taped to pipe (or insulation) with color-coded plastic adhesive tape not less than 3/ 4"
wide, full circle at both ends of pipe marker, tape lapped 1'h" .
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DIVISION 23
HVAC SYSTEMS IDENTIFICATIO N
D.
Large Pipes . For external diameters of 6" and larger (including insulation if any), provide either
full-band or strip-type pipe markers, but not narrower than 3 times the letter height (and of the
required length), fastened by one of the following methods :
1 . Laminated or bonded application of pipe marker to pipe (or insulation) .
2 . Taped to pipe (or insulation) with color-coded plastic adhesive tape not less than 1'h"
wide, full circle at both ends of pipe marker, tape lapped 3 .
3 . Strapped-to-pipe (or insulation) application of semi-rigid type, with manufacturer's
standard stainless steel bands .
E.
Lettering : Manufacturer's standard pre-printed nomenclature which best describes the piping
system in each instance, as selected by Architect/Engineer in case of variance with names as
shown or specified .
1 . Arrows . Print each pipe marker with arrows indicating the direction of flow, either
integrally with piping system service lettering (to accommodate both directions) or as a
separate unit of plastic .
02 .05 PLASTIC DUCT MARKER S
A.
General . Provide manufacturer's standard laminated plastic, color-coded duct markers . Conform
to the following color code :
Green : Cold air
Yellow : Hot air
Yellow/Green : Supply ai r
Blue : Exhaust, outside, return, and mixed ai r
B.
Nomenclature . Include the following :
Direction of air flo w
Duct service (supply, return, exhaust, etc .)
Duct origin (from )
Duct destination (to)
Design cfm
02 .06 PLASTIC TAP E
A.
General . Provide manufacturer's standard color-coded pressure-sensitive (self-adhesive) vinyl
tape, not less than 3 mils thick .
B.
Width . Provide 1'h" wide tape markers on pipes with outside diameters (including insulation, if
any) of less than 6" ; 2'h" wide tape for larger pipes .
C.
Color . Comply with ANSI A13 .1, except where another color selection is indicated .
02 .07 VALVE TAG S
A.
Brass Valve Tags . Provide 19-gauge polished brass valve tags with stamp-engraved piping
system abbreviation in'/a" high letters and sequenced valve numbers'/2" high and with 5/3 2" hole
for fastener .
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Living Units A, B, C at MCF St Cloud
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DIVISION 23
HVAC SYSTEMS IDENTIFICATIO N
1 . Provide 1'h" diameter tags .
B.
Valve Tag Fasteners . Provide manufacturer's standard solid brass chain (wire link or beaded
type) or solid brass S-hook of the sizes required for proper attachment of tags to valves and
manufactured specifically for that purpose .
C.
Access Panel Markers . Provide manufacturer's standard'/,6" thick engraved plastic laminate
access panel markers, with abbreviations and numbers corresponding to concealed valve .
Include'/s" center hole to allow attachment .
020
. 8 VALVE SCHEDULE S
A.
General . Each page of the valve schedule (8" x 10'h") shall be laminated in clear plastic rigid
sheets . The back side shall be blank . Provide three (3) sets of the complete schedule for
inclusion in the maintenance manual .
020
.ENGRAVED
9
PLASTIC-LAMINATE SIGN S
A.
General . Provide engraving stock melamine plastic laminate, complying with FS L-P-387, in the
sizes and thicknesses indicated, engraved with engraver's standard letter style of the sizes and
wording indicated, black with white core (letter color), except as otherwise indicated, signs shall
be punched for mechanical fastening, except where adhesive mounting is necessary because of
the substrate .
B.
Thickness : 1 / 1 6" for units up to 20 sq in or 8" in length ;'/s" for larger units .
C.
Fasteners : Self-tapping stainless steel screws, except contact-type permanent adhesive where
screws cannot or should not penetrate the substrate .
02 .10 PLASTIC EQUIPMENT MARKER S
A.
General . Provide manufacturer's standard laminated plastic, color coded equipment markers .
Conform to the following color code :
Green : Cooling equipment and components
Yellow : Heating equipment and components
Yellow/Green : Combination cooling and heating equipment and components
Brown : Energy reclamation equipment and components
Blue : Equipment and components that do not meet any of the above criteri a
For hazardous equipment, use colors and designs recommended by ANSI A13 .1 .
B.
Nomenclature . Include the following, matching terminology on schedules as closely as possible :
Name and plan number
Equipment service
Design capacity
Other design parameters, such as pressure drop, entering & leaving conditions, rpm, etc .
C.
Size. Provide approximate 2'h" x 4" markers for control devices, dampers, and valves, and
4'h" x 6" for equipment.
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Living Units A, B, C at MCF St Cloud
EEA Proj . No . 608 6
RECS Proj . No . 785C0027
DIVISION 23
HVAC SYSTEMS IDENTIFICATIO N
02 .11 PLASTICIZED TAG S
A.
General . Manufacturer's standard pre-printed or partially pre-painted accident-prevention tags, of
plasticized card stock with matte finish suitable for writing, approximately 3'/4 " x 55/8 ", with brass
grommets and wire fasteners, and with appropriate pre-printed wording, including large-size
primary wording ( for example, DANGER, CAUTION, DO NOT OPERATE) .
02 .12 LETTERING AND GRAPHIC S
A.
General . Coordinate names, abbreviations, and other designations used in mechanical
identification work with corresponding designations shown, specified, or scheduled . Provide
numbers, lettering, and wording as indicated or, if not otherwise indicated, as recommended by
manufacturer or as required for proper identification and operation/maintenance of inechanical
systems and equipment .
1.
Multiple Systems . Where multiple systems of the same generic name are shown and
specified, provide identification which indicates the individual system number, as well as
service .
PART 3- EXECUTIO N
03 .01 GENERAL INSTALLATION REQUIREMENT S
A.
Coordination . Where identification is to be applied to surfaces which require insulation, painting,
or other covering or finish, including valve tags in finished mechanical spaces, install identification
after completion of covering and painting . Install identification prior to installation of acoustical
ceilings and similar removable concealment .
03 .02 DUCTWORK IDENTIFICATIO N
A.
General . Identify air supply, return, exhaust, intake, and relief ductwork with duct markers ; or
provide stenciled signs and arrows showing ductwork service and direction of flow in black or
white (whichever provides most contrast with ductwork color) .
B.
Location . In each space where ductwork is exposed or concealed only by removable ceiling
system, locate signs near point where ductwork originates or continues into concealed enclosures
(shaft, underground, or similar concealment), and at 50' spacings along exposed runs .
C.
Access Doors . Provide duct markers or stenciled signs on each access door in ductwork and
housings indicating purpose of access (to what equipment) and other maintenance and operating
instructions and appropriate safety and procedural information .
D.
Concealed Doors . Where access doors are concealed above acoustical ceilings or similar
concealment, plasticized tags may be installed for identification in lieu of specified signs at
installer's option .
03 .03 PIPING SYSTEM IDENTIFICATIO N
A.
General . Install pipe markers of one of the following types on each system indicated to receive
identification, and include arrows to show normal direction of flow :
1 . Stenciled markers, with lettering black in color .
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Living Units A, B, C at MCF St Cloud
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DIVISION 23
HVAC SYSTEMS IDENTIFICATIO N
2 . Plastic pipe markers, with application system as indicated under PART 2- PRODUCTS
in this Section . Install on pipe insulation segment where required for hot non-insulated
pipes .
3 . Stenciled markers, black or white for best contrast, wherever continuous color-coded
painting of piping is provided .
B.
Locate pipe markers and color bands as follows, wherever piping is exposed to view in occupied
spaces, machine rooms, accessible maintenance spaces (shafts, tunnels, plenums), and exterior
non-concealed locations .
1 . Near each valve and control device .
2 . Near each branch, excluding short take-offs for fixtures and terminal units . Mark each
pipe at branch where there could be question of flow pattern .
3 . Near locations where pipes pass through walls or floors/ceilings, or enter non-accessible
enclosures .
4 . At access doors, manholes, and similar access points which permit view of concealed
piping .
5 . Near major equipment items and other points of origination and termination .
6 . Spaced intermediately at a maximum spacing of 50' along each piping run, except reduce
spacing to 25' in congested areas of piping and equipment .
7 . On piping above removable acoustical ceilings, except omit intermediately spaced
markers .
03 .04 VALVE IDENTIFICATIO N
A.
General . Provide valve tag on every valve, cock, and control device in each piping system ;
exclude check valves, valves within factory-fabricated equipment units, plumbing fixture faucets,
convenience and lawn-watering hose bibbs, and shutoff valves at plumbing fixtures, HVAC
terminal devices and similar rough-in connections of end-use fixtures and units . List each tagged
valve in the valve schedule for each piping system .
03 .05 MECHANICAL EQUIPMENT IDENTIFICATIO N
A.
General . Install an engraved plastic laminate sign or plastic equipment marker on or near each
major item of inechanical equipment, as specified herein, if not otherwise specified for each item
or device . Provide signs for the following equipment :
1 . Air Supply Units : Indicate unit designation and area served .
2 . Ventilation/Exhaust Fans : Indicate unit designation and area served .
3 . Pumps : Pump designation and service .
B.
Optical Sign Types . Where lettering larger than 1" height is needed for proper identification due
to distance from normal location of required identification, stenciled signs may be provided, in lieu
of engraved plastic .
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Living Units A, B, C at MCF St Cloud
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DIVISION 23
HVAC SYSTEMS IDENTIFICATIO N
C.
Lettering Size . Minimum'/a" high lettering for name of unit where viewing distance is less than
2'-0" ; 112 " high for distances up to 6'-0" ; and proportionately larger lettering for greater distances .
Provide secondary lettering 2/3 to 3/4 of size of principal lettering .
03 .06 ADJUSTING AND CLEANIN G
A.
Adiusting . Relocate any mechanical identification device which has become visually blocked by
work of this Division or other Divisions .
B.
Cleaning . Clean face of identification devices and glass frames of valve charts .
END OF SECTION 23 07 2 0
Section 23 07 20 Page 7 of 7 Replace Air Handling Units for
Living Units A, B, C at MCF St Cloud
EEA Proj . No . 608 6
RECS Proj . No . 785C0027