section 15050 – mechanical general provisions

SECTION 15050 – MECHANICAL GENERAL PROVISIONS
1.0 - GENERAL
1.1 SUMMARY
A. General Conditions, Special Conditions, Supplemental Conditions, and Instructions to Bidders
are applicable to this Division.
B. This Division is applicable to all Divisions of Mechanical work.
1.2 CONTRACTORS QUALIFICATIONS
A. In addition to the qualifications specified in the General Conditions, the contractor must have
successfully completed at least five other projects of a similar nature, the dollar value of each
being at least 75% of the dollar value of this project. The contractor must also hold a currently
valid contractors license in the field of work for which the proposal is offered. The contractor
must have a full time service department, and must offer service contracts on work installed,
from a shop within 100 miles of the work, or must provide proof of a written service agreement
with a firm meeting the above qualifications.
1.3 PLANS AND SPECIFICATIONS
A. The drawings show the general arrangement and extent of the work, and shall be followed as
closely as actual construction and work of other trades will permit. Because of small scale of
drawings, it is not possible to indicate each fitting, offset, and accessory, which may be
required. Investigate existing conditions, structural, finish, and other conditions affecting the
work and arrange the work accordingly, providing fittings and accessories as required. If
departures from the drawings are deemed necessary, provide details of the proposed
departures to the Architect for approval prior to making such departures.
B. General construction and structural drawings shall take precedence over drawings of work
specified herein.
C. Specifications are intended to prescribe the quality level of material, equipment, and
workmanship to be incorporated into the work. Where manufacturers names are indicated,
written request for substitutions will be considered up to 10 calendar days before receipt of
bids. Approved substitutions will be issued by addenda. Items not appearing on the addenda
will not be given further consideration. Submittals must identify the specific items under
consideration by drawing designation and by specification section and paragraph number.
Submittal must include complete descriptive literature; reference to manufacturers name and/or
model number only is not acceptable. Literature describing more than one type or size of
equipment must be clearly marked to positively identify which item it refers to.
D. Variations from the specifications must be explicitly indicated in the submittal; otherwise it will
be assumed the product will conform to the specifications in all respects. Submittals not
conforming to the above requirements will be rejected without further consideration.
MECHANICAL GENERAL REQUIREMENTS
15050 - 1
1.4 CODES AND STANDARDS
A. Work shall comply with applicable codes, standards, regulations and administrative
requirements. In no case shall the requirements be less stringent than the 2009 International
Building, Energy, Plumbing, Gas, and Mechanical Codes, and the National Electrical Code.
Applicable codes and standards are those legally in effect at the time of bidding.
B. No additional compensation shall be made for correcting work not conforming to codes and
regulations except where the work is in conformance with the Contract Documents and the
Contract Documents are specifically in violation of the Codes and/or regulations.
1.5 PRE-BID COORDINATION
A. Review the requirements of other Sections of these specifications to determine structural
conditions, finish conditions, and other conditions, which may affect work specified herein.
B. Visit the site to become familiar with existing conditions, which may affect work specified
herein.
C. Review applicable codes, regulations, and administrative requirements, which may affect work
specified herein.
D. No additional compensation will be allowed due to conditions, which could have been
determined by carefully following the requirements of this paragraph.
1.6 POST-BID COORDINATION
A. Submit shop drawings in accordance with the General Conditions. Shop Drawings shall be
clearly identified, using same nomenclature used on design drawings. Submittals shall be
bound in complete sets and shall be submitted at one time. Incomplete submittals shall be
held without review. Control diagrams shall include equipment internal wiring.
B. Anchor bolts, sleeves, inserts, and supports required for items specified herein and not
specifically indicated to be provided by others shall be furnished herein, and installed under the
Section specifying the material in which they are located. Provide exact locations under this
Section.
C. Slots, chases, openings, and recesses in or through floors, walls, ceilings, roofs, or other
construction shall be provided under the Section under which the material is specified. Exact
sizes and locations shall be provided herein.
D. Exact location of pipe, duct, equipment, etc., shall be determined in field, considering work of
other trades. Lines required to be sloped have right of way over those not required to be
sloped. Lines whose elevations cannot be changed have right of way over lines whose
elevations can be changed. Lines and equipment whose locations are dimensioned have
precedence over lines and equipment not dimensioned. Except in unfinished areas and where
specifically indicated on the drawings or approved in writing, ductwork, piping, conduit, wiring,
and similar items shall be concealed in the construction. Corrective work required due to
failure to comply with the above shall be made with no increase in the contract amount.
MECHANICAL GENERAL REQUIREMENTS
15050 - 2
E. Offsets, transitions, and changes in direction in pipes and ducts shall be made as required to
maintain proper headroom, clearances, and slope. Provide traps, vents, and fittings as
required.
F. Installation and arrangement of work shall permit removal of parts requiring periodic
replacement or maintenance and access for inspection and servicing.
G. Access panels and doors in equipment shall be provided herein. Access panels or doors in
walls, floors, ceilings, or other construction shall be furnished herein and installed under the
Section specifying the material in which the panels are to be installed, except where specifically
indicated to be furnished and installed by others. Access doors shall be provided where
definite periodic access is required. Access panels may be installed where access required is
infrequent, such as dampers, isolation valves, etc. Unless specified otherwise, doors and
panels located in normally occupied areas shall be steel, with baked enamel finish, with frames
designed specifically for the type of construction in which it is installed. Door and panel size
shall be sufficient to allow easy access for service, adjustment and removal of concealed
devices. Fasteners and latches shall be tamperproof.
1.7 FEES, PERMITS AND INSPECTION
A. Fees, permits, and inspections for work specified herein shall be obtained and paid for herein.
This does not include sewer impact fees, but does include tapping fees, meter charges, etc.
B. Provide certificates of final inspection from the inspection department having jurisdiction.
2.0 - PRODUCTS
2.1 MATERIALS
A. Materials and equipment shall be new, and shall bear the manufacturers name. Equipment
nameplates shall be permanent type and shall include model number, serial number, electrical
characteristics, and input and output rating.
B. All motorized and electric equipment shall be U.L. listed for the appropriate application and
shall be U.L. labeled.
C. Deliver, store, install, and protect materials and equipment in a manner to provide finished work
in a like new condition.
D. Materials and equipment of a like type or class shall be by the same manufacturer, and shall be
the same basic design, except as otherwise specified. This requirement shall not be construed
to limit competition from different types and classes of equipment, such as frequently occurs in
the practice commonly referred to as "lumping" a bid. In general, separate prices shall be
quoted for each class or type of equipment and a supplier’s refusal to do so shall disqualify that
quote from further consideration.
E. Materials and equipment shall be suitable for the application. As examples, equipment
installed outdoors shall be weatherproof. Other special requirements could include splash
proof, drip-proof, explosion proof, spark-resistant, etc. This provision is not intended to be
MECHANICAL GENERAL REQUIREMENTS
15050 - 3
open-ended, but is intended to apply where a requirement is obvious from the contract
documents, whether or not it is specifically mentioned.
F. Manufacturer’s instructions shall be followed unless in conflict with the Contract Documents, in
which case promptly notify Architect in writing and obtain written instructions before proceeding
with the work.
2.2 EQUIPMENT ACCESSORIES
A. Provide accessories and incidental items as required to complete the work and leave it
operable and ready for use. Included in this requirement are items such as the following:
1. Condensate drains for HVAC units and similar devices (HVAC)
2. Relief drains for water heaters, backflow preventers, etc. (Plbg)
3. Gas supply for gas fired equipment (Plbg)
4. Combustion air for gas fired equipment (HVAC)
5. Flues for gas fired equipment (HVAC)
6. Water supplies, drains, and vents for plumbing fixtures and equipment.
B. The above list is not all-inclusive. This provision is not intended to be open-ended. Following
are examples of how it will be applied:
1. Documents clearly show a gas fired water heater. Flue is not shown. Flue must be
provided within the contract because it is required for proper operation, and is evident
from the documents.
2.
A walk-in cooler furnished by others arrives at the site, and is determined to have a water
cooled condenser. The documents do not indicate whether the cooler is air cooled or
water cooled. The water supply and drain are not included in the contract, even though it
is required to function, because the requirement was not evident from the documents.
C. Make connections to equipment in a manner to prevent excessive strain on the equipment.
D. Where connections to equipment provided are different from that shown, make incidental
changes in pipe, ductwork, supports, wiring, etc., as required to cause the equipment to
operate in the manner specified, leaving access for maintenance. Changes shall be made at
no additional compensation. Submit shop drawings indicating revised layout where required by
Architect/Engineer.
E. Belt guards and drive guards shall be provided to completely enclose exposed moving parts on
equipment. Where available, guards shall be provided by equipment manufacturer. For field
built guards, submit details for approval. Guards to be removable for servicing or replacement,
and shall allow access for lubrication and testing.
F. Supports for equipment specified herein is included herein except as otherwise specified.
When required by Architect/Engineer, submit shop drawings of proposed supports for approval.
MECHANICAL GENERAL REQUIREMENTS
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3.0 - EXECUTION
3.1 WORKMANSHIP
A. Workmanship shall be classified as "good" on a scale of poor, average, good, and excellent,
where poor is minimum acceptable, and excellent is the best obtainable. Function shall be the
number one criteria. Workmanship that provides the required function shall be rated "poor" as
a minimum. Grading above "poor" shall be based on appearance. Appearance shall be based
on various factors depending on the work involved, but generally shall include such factors as
uniformity, consistency, lack of obvious imperfections or blemishes, smoothness, proper
alignment, and similar factors. Judging shall be based on field conditions, not laboratory
conditions. Judging shall be based on industry standards where they exist.
3.2 CUTTING AND PATCHING
A. Cutting and patching of the construction for work specified herein is included herein, except as
specifically indicated otherwise. Work shall be accomplished in a manner to cause the least
possible damage to the construction, and to allow patching to restore the work to as nearly its
original condition as is practical. Work shall be accomplished by workmen skilled in the trade
involved.
B. Cutting and patching of structural elements shall not be permitted except upon written approval
from the Architect.
C. Annular space between pipe and sleeve in exterior walls and slabs on grade shall be filled with
a flexible non-hardening sealant to make the assembly permanently watertight. In fire rated
construction, the annular space shall be filled with a non-combustible flexible fire resistive
material to prevent the spread of fire and smoke. For aboveground exterior wall penetrations,
provide neoprene seal.
3.3 ELECTRICAL WORK
A. Equipment specified herein requiring electric motors shall be complete with motors as
specified, or if not specified, motor of the type the manufacturer recommends for the
application. Motors shall be sized as indicated, or if not indicated, to be sized so that design
driving requirements do not exceed the nameplate rating. Motors for pumps, if size is not
indicated, shall be sized to be non-overloading at all points on the pump curve. Motors for Vbelt drives shall have an adjustable cast iron or steel slide base.
B. Operating and safety controls, devices, and wiring required for equipment specified herein and
not specifically indicated to be provided by others shall be provided herein. Electrical work
provided under this Division shall conform to Division "Electrical" and National Electrical Code.
C. Power wiring, including disconnects unless otherwise indicated, shall be provided under
Division "Electrical". Starters for equipment specified herein shall be provided herein, wired
under Division "Electrical". Magnetic starters shall provide running over-current, overload, and
under-voltage protection. Unless otherwise indicated, starters shall have "Hand-Off-Auto"
switch.
MECHANICAL GENERAL REQUIREMENTS
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D. Electrical characteristics of equipment specified herein shall be as indicated on the mechanical
drawings. If not indicated, determine from electrical drawings or from consultations with
Architect/Engineer. Electrical characteristics are indicated for bidding purposes only. After
award of the contract, and as part of the submittal process, compile a complete listing of
equipment requiring electrical connections. Indicate voltage, amperage, phase and hertz of the
service required. Indicate stages of heat, compressors, and similar devices, inrush current,
number of circuits, etc.
E. Divide submittal into the following sections:
1. Items for which the submittals and contract documents are in agreement and which do not
require revisions to the work.
2. Items that vary from the contract documents and require revisions to the work. This
category shall be further sub-divided into the following parts:
a. Items which are the responsibility of the contractor under various clauses of the
specifications, and for which no change in contract is requested.
b. Items which are no fault of the contractor, and for which a change order is requested.
These items must include the amount requested, with a complete cost breakdown, in
accordance with the change clauses of the contract.
F. After review and approval by the contracting parties, including agreement upon cost sharing for
proposed changes, which are the contractor’s responsibility, submit to Architect for review. Do
not order materials or initiate other work until this coordination is completed.
G. This provision is not intended to allow the contractor to re-design the work. It is to resolve
conflicts only, and is for the benefit of the Owner. Request not falling into this category may be
rejected, and, if not rejected, shall be re-engineered at the contractors cost.
H. Discrepancies not promptly resolved in the above manner, including cost of rework, shall be
considered to be caused by lack of contractor coordination and shall be the full responsibility of
the contractor.
I.
Unless otherwise indicated, equipment specified herein shall operate on one power feed with
electrical characteristics as indicated. If additional wiring and devices are required, provide
herein.
3.4 EQUIPMENT START-UP AND TESTING
A. Detailed operating and performance test, if required, are specified with the equipment. Where
detailed testing is not specified, start up equipment as recommended by manufacturer, and
operate in a manner to determine that equipment and systems operate and perform as
specified. Test safety and limit controls to assure proper operation and setting. It may be
necessary to adjust control settings or otherwise temporarily modify systems in order to
properly test the equipment. Provide oil, water, refrigerant, and other materials required for
proper operation. Provide fuels required for testing except for those supplied to the project
through permanently connected utilities.
3.5 OPERATING AND MAINTENANCE INSTRUCTIONS
A. Instruct Owners representative in the proper start-up, operation and maintenance of systems
and equipment specified herein. This instruction is separate from the instruction to be provided
by manufacturers’ representative as specified with the equipment.
MECHANICAL GENERAL REQUIREMENTS
15050 - 6
3.6 OPERATING AND MAINTENANCE MANUALS
A. Provide operating and maintenance instructions on all systems and equipment. Instructions
shall be bound in three ring hard-back loose-leaf binder(s). Include catalog cuts, installation,
operation, and maintenance instructions, parts list, warranties, and other pertinent data. Group
data by class and/or type of equipment, by system, and by manufacturer. Include table of
contents and at least two indexes, one listing equipment alphabetically by standard
nomenclature, the other listing equipment by manufacturer. Manuals shall be submitted to
Architect/Engineer prior to final inspection to assist in final inspection. Provide three manuals,
one for the owner, one for the engineer, and one to be retained by the contractor during the
first years warranty, then turned over to the owner for use by service contractor.
3.7 CLEAN-UP
A. During progress of the work, keep excess debris and rubbish removed from the project. Keep
foreign matter out of ductwork, piping, plenums, convector covers, etc. If dust, dirt, or other
matter is allowed to enter systems, remove by flushing, vacuum cleaning, or other approved
methods prior to starting up equipment. Upon completion of work, remove debris, rubbish, and
excess material and equipment. Leave area in a "broom clean" condition. Wipe down fixtures
and equipment to remove dust, grease, and other foreign matter. Clean components exposed
in finished areas, such as diffusers, convector covers, thermostats, etc.
3.8 PAINTING
A. Unless otherwise indicated, concealed work will not require painting. Ferrous surfaces
exposed in finished areas, mechanical rooms and in exterior locations and not provided with
factory finish shall be painted. Factory finished items having scratches or other finish damage
shall be touched up as required. Painting shall be provided herein, and shall be as specified in
Section "Painting".
3.9
AS BUILT DRAWINGS
A. Keep an accurate record of the location of concealed piping and ductwork. Note accurately all
deviations from the contract documents. Turn over marked set of plans and specifications to
Architect prior to request for final inspection. Drawings shall be certified by contractor to be "As
Built".
3.10 GUARANTEE
A. In addition to the guarantees specified in Division 1, equipment shall be guaranteed to meet the
performance criteria specified. Extended warranties by manufacturers shall remain in effect
beyond the one-year standard warranty.
3.11 FINAL INSPECTION
A. Request for final inspection shall not be made until all systems are complete, tested and
balanced, run tested for a minimum of three days, and ready to turn over to the owner.
Operating and maintenance manuals shall have been submitted at least 14 days prior to final
inspection.
MECHANICAL GENERAL REQUIREMENTS
15050 - 7
B. Contractor shall assist the Architect and Engineer in the final inspection as follows:
1. Have all systems in operation,
2. Remove ceiling tiles at all items of equipment and as required to allow complete
observation of duct and piping systems.
3. Remove access panels and open access doors as required.
4. Provide ladders and person to move ladders about the building as required.
5. Provide person familiar with the actual installation of the systems to answer questions
regarding reasons for variations from plans and specs, concealed work, etc.
6. Provide person familiar with system controls to exercise the system in all specified modes
of operation.
7. Provide person with authority to make decisions regarding corrective action to be taken if
deficiencies are discovered.
END OF SECTION 15050
MECHANICAL GENERAL REQUIREMENTS
15050 - 8
SECTION 15055 - MOTOR STARTERS
1.0 - GENERAL
1.0 SUMMARY
A. Section 15A, Mechanical General Provisions, applies to this Section.
2.0 - PRODUCTS
A. Magnetic starters shall be full voltage, non-reversing type of the size and type recommended by
the motor manufacturer and/or equipment manufacturer complying with NEMA Standards and the
National Electrical Code.
B. Magnetic starters shall include the following:
1. Melting alloy type overloads for each phase sized for full load running current of motor.
2. External "Reset" button.
3. “Hand-Off-Auto" selector switch.
4. Interlocks, switches, and similar devices as required for coordination with control
requirements. Provide one additional auxiliary N.O. contact and one additional auxiliary N.C.
contact in addition to those required for control requirements.
5. Built-in 120-volt control circuit transformer, fused in accordance with the NEC.
6. Red pilot light labeled "Running".
7. Green pilot light labeled "Stopped".
C. Magnetic starters shall include manual switch and pilot light with thermal overload device. Multispeed starters shall have additional switch positions and pilot lights for the number of operational
speeds.
D. Starters shall be enclosed in NEMA enclosures for each particular installation as follows:
1. Type 1 Enclosure - General Purpose indoor installation
2. Type 4 Enclosure - Watertight for outdoor installation
3. Type 7 & 9 Enclosure - Explosion proof/hazardous installation
4. Type 4X Enclosure - Watertight/Corrosion resistant
5. Type 12 Enclosure - Dust-tight
E. Enclosures shall have padlock ears with frames and supports for mounting as required to fit the
particular installation.
F. Combination starters shall have fusible disconnect switch built into a common enclosure.
G. Starters shall have laminated nameplates indicating the equipment served.
H. Magnetic starters shall be Allen Bradley 509 or approved equal by Square D, Cutler-Hammer, or
G.E.
MOTOR STARTERS
15055- 1
3.0 - EXECUTION
3.1 INSTALLATION
A. Starters shall be provided under this Division and wired under Division "Electrical". Starters shall
be installed in accordance with the manufacturer’s recommendations and the National Electrical
Code.
END OF SECTION 15055
MOTOR STARTERS
15055- 2
SECTION 15056 – EXCAVATION, TRENCHING AND BACKFILL
1.0 - GENERAL
1.0 SUMMARY
A. Section 15050, Mechanical General Provisions, applies to this Section.
B. See bid form for unit prices required for work specified herein.
C. See Division 2, Site Work, for specified compaction requirements.
2.0 - PRODUCTS
A. Provide material, equipment, and labor for excavation, trenching and backfill required for work
specified herein.
3.0 - EXECUTION
3.1 EXCAVATION AND TRENCHING
A. Work may be performed by hand or by machine except that machine work shall be prohibited
where damage to the structure or utilities are likely.
B. Excavations shall be of the minimum size practical for the work involved, and shall be kept open
no longer than necessary. Except as otherwise approved, excavation and backfill shall be
completed prior to placement of concrete, paving, or landscaping. Repairs to other work, existing
or new, required due to excavation required herein, shall be done under the Section under which
the damaged material is specified, but shall be paid for under this Section.
C. During excavation, material suitable for backfill shall be stored a sufficient distance from the banks
to prevent slides or cave-ins. Material not required or suitable for backfill shall be removed and
wasted as indicated or directed. Grade as necessary to prevent surface water from entering the
excavation, and remove any water accumulating therein by pumping or other approved methods.
Provide sheeting and shoring as required for protection of the work, safety of personnel, and to
conform to safety regulations. Unless otherwise indicated or approved, excavation shall be by
open cut. Earth excavation shall be unclassified, including clay, silt, sand, muck, gravel, hardpan,
and loose stone.
D. Rock, if encountered, shall be excavated as required. Payment for rock excavation shall be in
accordance with other Divisions of these specifications including provisions for no separate
payment. If payment for rock removal is not covered under other divisions, payment shall be as
negotiated prior to removal of the rock and as authorized in writing. Rock removed without written
authorization shall be at no increase in the contract amount. Rock is defined as material that
cannot be removed without drilling and blasting.
E. Sub-surface water, if encountered, shall be removed by pumping, well pointing, or other approved
means, and shall be paid for in accordance with other Divisions of the specifications, including
provisions for no separate payment. If payment for removal of sub-surface water is not covered in
other Divisions, payment shall be as negotiated prior to initiating the extra work, and as authorized
EXCAVATION, TRENCHING AND BACKFILL
15056- 1
in writing. Water removed without written authorization shall be at no increase in contract
amount.
F. Trenches shall be excavated to the required grade along straight lines, with a minimum of eight
inches clear between the piping or ductwork and the sides of the trench or shoring. Trench walls
shall be as nearly vertical as practical. The bottom of the trench shall be accurately graded to
provide uniform bearing and support for each section of the conduit on undisturbed soil at every
point along its length, except that bell holes may be excavated at joints to facilitate joining and
uniform bearing under the barrel of the pipe. In rock or other material where it is impractical to
obtain uniform bearing, the trench may be over excavated four to six inches, and cast iron or steel
pipe may be supported on concrete or masonry block located at the joints. For other pipe, or
ductwork, backfill the over excavated depth with loose granular material to provide uniform
support.
G. Unless otherwise indicated or approved, trench excavations shall be of a depth to provide three
feet of cover except where building slabs or other construction provides bridging.
H. Protect existing utility lines whose location is indicated or otherwise determined prior to excavation
or discovered during excavation operations. Repair damage at no additional compensation.
3.2 BACKFILLING
A. Backfill after testing is completed.
B. Backfill under slabs on grade, building structure, concrete or asphalt paving, or other areas with
specified density requirements shall be granular in nature, free from organic materials and stones
over 2 1/2 inches maximum dimension. The first one-foot of cover shall be compacted to the
density specified for that area.
C. Backfill for other areas shall be earth, loam, sandy clay, sand, gravel, soft shale, or other approved
material free from clods or stones over 2 1/2 inches maximum dimension. The first one-foot of
cover shall be placed in one foot layers and tamped.
D. Grade surface uniformly and mound over trenches in areas not to receive slabs or paving.
END OF SECTION 15056
EXCAVATION, TRENCHING AND BACKFILL
15056- 2
SECTION 15075 - PIPING AND EQUIPMENT IDENTIFICATION
1.0 - GENERAL
1.1 SUMMARY
A. Mechanical General Provisions applies to this Section.
2.0 - PRODUCTS
2.1 MATERIALS
A. Engraved nameplates to be laminated plastic, black on white or white on black. Characters shall be
engraved through the upper layer to expose the contrasting color lower layer. Character height shall be
a minimum of 1/2" headlines and 1/4" text for equipment nameplates, and 1/4" headlines and 1/8" text
for controls.
B. Identification tapes shall be plastic, mechanically embossed type, "Dymo" or approved equivalent, 1/4"
size.
C. Control diagrams and piping diagrams shall be carefully drawn, with typed or mechanically lettered
characters. Diagrams to be posted in equipment rooms shall be framed under glass or shall be plastic
laminated on a rigid backing.
3.0 - EXECUTION
3.1 INSTALLATION
A. Identify equipment with engraved laminated plastic nameplates. Identification shall be consistent with
symbols used on the design drawings. Provide identification on readily accessible side of each piece of
equipment.
B. Provide piping labels for HVAC and Plumbing piping on minimum 15 ft. centers. Provide at least one
label for each piping system within each room. Provide labels on each side of partitions at all pipe
penetrations. Provide additional labels where necessary to make piping systems easily identifiable.
C. Identify control panels and their devices and switches with engraved nameplates.
D. Identify controls requiring manual operation or setting, including designation of the equipment to be
controlled. Identify with embossed plastic tapes.
E. Post control diagrams and piping diagrams in the central equipment room(s) or, where there is no
central equipment room, at another location designated by the owner. Post diagrams of equipment
located in, served from, or controlled from the equipment room. Control diagrams shall include a
sequence of operation and a sequence of control.
END OF SECTION 15075
PIPING AND EQUIPMENT IDENTIFICATION
15075 - 1
SECTION 15081 - DUCT INSULATION
1.0 - GENERAL
1.1 SUMMARY
A. Mechanical General Provisions applies to this Section.
B. Internal duct insulation and acoustical lining is specified under another Section.
C. Duct insulation R-values shall comply with the 2009 International Energy Conservation Code.
2.0 - PRODUCTS
2.1 MATERIALS
A. Insulation:
1. Insulation shall be an inorganic blanket of glass fiber, with a factory applied vapor barrier
facing and a minimum 2" flange.
2. Insulation shall be U.L. Labeled, and when tested by the ASTM E84-70 method, shall have a
maximum flame spread rating of 25, a maximum smoke developed rating of 50, and a
maximum fuel contributed rating of 50.
3. Insulation shall have a thermal conductivity not exceeding .25 BTU IN/HR Sq. Ft. degrees F,
at 75 degrees F mean temperature.
4. Material shall be odorless, bacterial and fungus resistant, and shall not cause corrosion in
aluminum or galvanized steel.
5. Permeability shall not exceed .02 perms when tested by ASTM E96-66, Procedure "A".
6. Adhesive shall be Benjamin Foster 85-15 or 85-20, Epolux Cadoprene 400, Insulcustic 1C
201 or equivalent.
7. Duct liner shall be CertainTeed “ToughGard” type 300 with enhanced surface or approved
equal. All duct liner shall have anti-microbial coating.
3.0 - EXECUTION
3.1 INSTALLATION
A. Cut insulation slightly longer than duct circumference to insure full thickness at corners. Butt
circumferential joints and lap longitudinal joints a minimum of 2". Adhere insulation to metal with
4" wide strips of adhesive at 8" on center. Additionally secure insulation to the bottom of
rectangular ductwork over 24" wide with mechanical fasteners at not more than 18" on center. On
joints, secure the flange and overlap with 9/16" flare-door staples applied at 6" on center and
taped with 3" wide foil reinforced kraft tape. Tape pin penetrations and punctures of the facing.
B. Insulate all concealed outside air ducts and all concealed supply and return air ducts located
inside the building insulation envelope with min. 2" thick glass fiber duct insulation (minimum R-5).
Increase insulation thickness for supply and return air ducts located outside the building insulation
envelope to 3” (minimum R-8).
DUCT INSULATION
15081- 1
C. Insulate all exposed rectangular supply and return air ducts located inside the building insulation
envelope with min. 1.5" thick fiberglass duct liner (minimum R-5). Liner shall have anti-microbial
coating. Increase insulation thickness for supply and return air ducts located outside the building
insulation envelope to 2” (minimum R-8).
END OF SECTION 15081
DUCT INSULATION
15081- 2
SECTION 15083 - PIPE INSULATION
1.0 - GENERAL
1.1 SUMMARY
A. Mechanical General Provisions applies to this Section.
2.0 - PRODUCTS
2.1 MATERIALS
A. Fiberglass pipe insulation shall be one or two-piece type with vinyl coated embossed vapor barrier
jacket with pressure sealing lap. The complete insulation system shall be U.L. rated noncombustible, with flame spread not to exceed 25, fuel contributed and smoke developed not to
exceed 50. At 75-degrees F mean temperature, K factor not to exceed .28. Permeance shall not
exceed .02 perms. Jacket shall test at a minimum of 50 units when tested by the Beach puncture
test. System shall be dimensionally stable and warp, shrink, rot, rodent, and vermin resistant in
the temperature range of -60 degrees F to plus 450 degrees F.
B. Fitting covers shall be one-piece pre-molded, insulated, PVC, conforming to Federal
Specifications L-P-535C, Composition A, Type II, Grade GU.
C. Pipe insulation R-values shall comply with the 2009 International Energy Conservation Code.
3.0 - EXECUTION
3.1 INSTALLATION
A. It is the intent of this specification to provide a completely insulated pipe system where required to
prevent excessive heat loss, heat gain, condensation, freezing, or to prevent burns due to contact
with hot surfaces. Unless otherwise indicated, piping with fluid temperatures more than 20
degrees F below ambient, 40 degrees F above ambient, or hotter than 120 degrees F where
personnel contact is likely shall be insulated.
B. Systems shall be insulated completely, except that where insulation would have to be removed
frequently for servicing, it may be omitted. Where omission of insulation would cause
condensation, provide insulated drain pans piped to a drain; where a burn hazard would exist,
provide expanded metal guards.
C. Where insulation above will not prevent freezing, provide heat tape sufficient to prevent freezing
down to -20 degrees F.
D. Complete testing of piping prior to applying insulation.
E. Exposed fixture runouts shall not be insulated unless specifically indicated.
F. Apply insulation over clean dry pipe surfaces. Apply in accordance with manufacturers published
instructions. Omit insulation at unions, flanges, and mechanical couplings, and bevel insulation at
PIPE INSULATION
15083- 1
these points and finish with insulating mastic. Insulation shall be continuous through hangers and
protected with sheet metal shields. Where weight of piping would compress insulation beyond
manufacturers recommendations, provide high-density insulation inserts at hangers. Insulate
fittings, valve bodies, etc., with factory molded covering of the same material and thickness as the
adjoining pipe or with covers field fabricated from pipe insulation and finished with insulating
mastic or with insulating cement where standard covers are not available. Thoroughly seal
longitudinal and butt lap seams. Where recommended by the manufacturer, also secure with
aluminum or stainless steel bands.
G. Domestic hot and cold water piping shall be insulated with 1" thick fiberglass pipe insulation.
H. Exposed insulated piping within 8 ft. of the floor shall be completely jacketed with .016 in. thick
aluminum pipe jacketing held in place with ½” wide aluminum bands on 10 in. centers. Fittings
shall be covered with two piece preformed aluminum fitting covers.
END OF SECTION 15083
PIPE INSULATION
15083- 2
SECTION 15110 - PIPING, GENERAL
1.0 - GENERAL
1.1 SUMMARY
A. Mechanical General Provisions applies to this Section. Refer to other Sections of this Division for
specific requirements for each type of piping system.
2.0 - PRODUCTS
2.1 MATERIALS
A. Sleeves to be scheduled 40 black steel pipe. Escutcheons shall be spun brass spring clamp type,
chrome plated in finished areas. Hangers, supports, and accessories shall be a standard
manufactured product of Grinnell, Fee and Mason, Elcen or approved equivalent. Hangers to
conform to MSS SP 69.Pipe flashings for pipes penetrating roofs shall be an assembly consisting
of a spun aluminum base, a neoprene seal, and stainless steel clamp. Pitch pockets are not
acceptable. For pipe penetrating walls, sleeve shall be extended sufficiently to secure neoprene
seal, and shall be caulked into the construction so as to be weather tight
3.0 - EXECUTION
3.1 INSTALLATION
A. Run piping parallel to the lines of the building without interference with openings and obstructions.
Piping to be concealed in the construction except in equipment rooms or where specifically
indicated or approved to be exposed. Pipe sized indicated are minimum, larger sizes may be
used for convenience where space permits. Cut piping accurately to dimensions established in the
field and fit into place without springing or forcing. Remove burrs by reaming and rattling and
clean before erection. Cap or plug lines and equipment during erection to prevent entrance of
foreign materials. Cutting of structural elements shall not be permitted without written approval.
Changes in direction to be make with fittings. Provide unions where required to facilitate removal
of equipment. Provide valves where indicated and where required to isolate equipment for
servicing or removal. Route piping to allow for expansion and contraction, or, where approved,
provide expansion joints or connectors. Provide dielectric couplings for connecting copper piping
to ferrous piping.
B. SLEEVES
1. Provide sleeves around pipes passing through poured wall, floors, ceilings, partitions,
structural members, or other building components. Where pre-cast concrete, unit masonry,
or other non-poured construction is used, openings may be cut, drilled or formed by other
methods. Sleeves will not be required provided piping is arranged so as not to damage
construction in any way, and opening is neat and reasonable smooth. If opening is oversize
or irregular, provide sleeve as specified above and grout into construction. Floor sleeves
shall exceed 1/4" above the finished surface. Annular space between pipe and sleeve in
exterior walls and slabs or grade shall be filled with a flexible non-hardening sealant to make
the assembly permanently watertight. In fire rated construction, the annular space shall be
PIPING, GENERAL
15110 - 1
filled with a flexible fire resistive material to prevent the spread of fire and smoke. For above
ground exterior wall penetration, provide neoprene seal.
C. ESCUTCHEONS
1. Provide escutcheons at pipe penetrations of floors, walls, partitions, and ceilings, set tight to
the pipe and building surface. Escutcheons shall completely cover the pipe sleeve or other
opening.
D. FLASHING
1. Provide flashings to roofing contractor for all pipes penetrating the roof, provided under this
Section. Seal flashings in accordance with manufacturers instructions.
E. SUPPORT
1. Provide adequate support for piping. Selection of the specific hangers, attachments, and
accessories is the responsibility of the contractor. This selection shall consider piping loads,
expansion and contraction, insulation, location, arrangement, and available structural
support. Exception to the above is when hanger type and location is indicated on the
drawings. Anchor piping as required to control pipe movement and to prevent excessive
strain on equipment connections, hangers, supports, and structural components.
END OF SECTION 15110
PIPING, GENERAL
15110 - 2
SECTION 15140 –PLUMBING PIPING
1.0 - GENERAL
1.1 SUMMARY
A. Mechanical General Provisions applies to this Section.
B. Consult with local authorities concerning requirements for taps to the utility service and
arrangements for meters, regulators, valves, backflow prevention devices, foundations, supports,
vaults, pits, excavation, trenching, pavement repair, etc. Provide that work required by the utility in
accordance with their instructions. Include herein all charges for initial service made by the
utilities, including but not limited to, permits, tapping fees, service fees, and charges for
construction performed by them. Impact fees are not included herein, and are to be paid by the
Owner.
2.0 - PRODUCTS
2.1 MATERIALS
A. Cast iron soil pipe and fittings shall conform to ANSI A112.5-1, ASTM A-74, and CISPI HS-72,
except no-hub pipe and fittings to conform to CISPI Standard 301.72. Pipe shall be coated inside
and outside.
B. Steel pipe shall conform to ASTM A-53 or ASTM A-106, Grade A or B Screwed joints fittings to be
malleable iron, ASA B 16.3, drainage pattern where used in DWV systems. Grooved pipe
mechanical couplings shall be Victaulic Style 77 with Grade H gaskets.
C. Plastic DWV piping shall be PVC conforming to ANSI K65.56 and ASTM D-2665. Solvent cement
shall conform, to ASTM D-1564.
D. Plastic sewer pipe shall be PVC conforming to ASTM D-3033.
E. Copper tubing, Type K, L and M shall conform to ASTM B-88. Use soft annealed tubing for coiling
or bending and where installed underground, use hard drawn for other applications. Fittings shall
be cast bronze, ANSI B16.18 or wrought copper or bronze, ANSI B16.22. Joints shall be solder
type.
F. Pipe Sleeves shall be schedule 40 black steel pipe.
G. Escutcheons shall be spun brass spring clamp type, chrome plated in finished areas.
Escutcheons at connections to piping roughed-in in the construction shall be deep type.
H. Hangers, supports and accessories shall be a standard manufactured product of Grinnell, Fee and
Mason, Elcen or approved equivalent.
I.
Vent flashings shall be seamless soft lead, 4 pounds per square foot. Base to extend a minimum
of 4 inches beyond the pipe in all directions. Flashing to extend 12 inches above the roof, after
being turned down into vent, unless otherwise indicated.
PLUMBING PIPING
15140- 1
J. Pipe flashings for pipes that cannot be flashed as described for vents shall be an assembly
consisting of a spun aluminum base, a neoprene seal, and stainless steel clamp. Pitch pockets
are not acceptable.
K. Solder shall conform to ASTM B-32.
L. Flux shall be paste type, mildly corrosive, zinc and ammonium chloride.
M. VALVES
1. Valves shall be as manufactured by Stockham, Jenkins, Powell, Hammond, Walworth,
Crane, Nibco, or approved equivalent.
2. Gate valves shall be bronze, 150 lb. WOG, screw-in-bonnet, rising stem, solid wedge, solder
and or screw end as required, iron, bronze, or aluminum hand wheel.
3. Check valves shall be bronze, 150 lb. WOG, screw-in-bonnet, horizontal swing, regrinding
type, T-Pattern, renewable discs, solder end or screw end as required.
4. Ball valves shall be bronze, two-piece, 400 lb. WOG, teflon seats, teflon-impregnated
asbestos packing, conforming to Federal Specification WW-V-35b. Provide screw ends or
solder ends as required.
5. Shut-off valves for gas service shall conform to ANSI Standard B16.33 or Z21.15 for manual
valves and Z21.21 for automatic valves.
N. Pipe couplings for connecting DWV pipes of dissimilar materials and/or sizes shall be a factory
manufactured adapter as recommended by the pipe manufacturers or coupling manufacturer,
shall be an elastomeric PVC coupling with stainless steel clamps as manufactured by Fernco, or
shall be an elastomeric PVC "Doughnut" as manufactured by Fernco.
O. Screwed joint compound to be red or white lead or teflon tape.
P. Corrosion protection tape shall be 10 mil PVC, plastic backed, conformable, pressure sensitive
adhesive, equivalent to 3M Company's "Scotchrap" Corrosion Protection Tape #40.
3.0 - EXECUTION
3.1 INSTALLATION
A. Run piping parallel to the lines of the building without interference with openings and obstructions.
Piping shall be concealed in the construction except in equipment rooms or where specifically
indicated or approved to be exposed. Pipe sizes indicated are minimum; larger sizes may be
used for convenience where space permits.
B. Cut piping accurately to dimensions established in the field and fit into place without springing or
forcing. Remove burrs by reaming and rattling and clean before erection. Cap or plug lines and
equipment during erection to prevent entrance of foreign materials.
C. Cutting of structural elements shall not be permitted without written approval. Changes in
direction shall be made with fittings. Provide unions where required to facilitate removal of
equipment. Provide valves where indicated and where required to isolate fixtures and/or
equipment for servicing or removal.
D. Provide dielectric couplings for connecting copper piping to ferrous piping. Provide factoryfabricated adapters for connecting dissimilar pipe, or pipe with dissimilar joint systems.
E. SLEEVES
PLUMBING PIPING
15140- 2
1.
2.
Provide sleeves around pipes passing through poured walls, floors, ceilings, partitions,
structural members, or other building components. Sleeves through outside surfaces shall
have the annular space sealed with an approved waterproof material. Where precast
concrete, unit masonry, or other non-poured construction is used, openings may be cut,
drilled, or formed by other methods. Sleeves shall not be required in solid walls provided
piping is arranged so as not to damage construction in any way, and openings is neat and
reasonably smooth. If opening is oversize or irregular, provide sleeve as specified above and
grout into construction. Floor sleeves shall extend 1/4" above the finished surface.
Annular space between pipe and sleeve in exterior walls and slabs on grade shall be filled
with a flexible non-hardening sealant to make the assembly permanently weather tight.
Annular space between pipe and sleeve in fire and/or smoke rated construction shall be filled
with a flexible fire resistive material to prevent the spread of fire and/or smoke.
F. ESCUTCHEONS
1. Provide escutcheons at pipe penetrations of floors, walls, ceilings, partitions, etc., set tight to
the pipe and the building surface. Escutcheons shall completely cover the pipe sleeve or
other opening. Escutcheons for finished spaces shall be chrome plated.
G. FLASHING
1. Roof flashings shall be provided herein and turned over to the roofing contractor for
installation.
H. ABOVEGROUND PIPING SUPPORT
1. Anchor piping as required to control pipe movement and to prevent excessive strain on
equipment connections, hangers, supports, and structural components. Provide offsets,
changes in direction, expansion loops, or, with written approval, expansion joints as required
to absorb the expansion and contraction.
2. Provide adequate support for piping. Selection of the specified hangers, attachments, and
accessories is the responsibility of the contractor. This selection shall consider piping loads,
expansion and contraction, insulation, location, arrangement, and available structural
support. Exception to the above is when hanger type and location is indicated on the
drawings. Hanger spacing shall be not less than the following:
3. Vertical cast iron soil piping shall be supported at the base and at least once in each story
interval, with support spacing not to exceed 15 feet. Horizontal cast iron soil pipe shall be
supported at least once in each section of pipe, with hangers as close to the joints as
practical.
4. Vertical steel piping shall be supported at least once in each story interval, with support
spacing not to exceed 15 feet. Horizontal steel piping shall be supported at intervals of not
less than 6 feet for 1/2" piping, not less than 8 feet for 3/4" and 1" piping, and not less than 10
feet for larger piping.
5. Vertical copper tubing shall be supported at the base and at each story interval, not to
exceed 15 feet, and tubing 1 1/2" and over, and not to exceed four feet for smaller piping.
Horizontal copper tubing shall be supported at intervals not to exceed six feet for tubing 1
1/2" and smaller, and not to exceed ten feet for larger piping.
6. Vertical plastic piping shall be supported at the base and at each story interval, not to exceed
a spacing of 15 feet for piping 2 inch and larger, and at a spacing not to exceed four feet for
smaller piping. Horizontal plastic piping shall be supported at intervals not to exceed four
feet.
7. In addition to the hangers specified above, provide hangers at vertical and horizontal
changes in direction, at branches, at valves, at heavy line mounted equipment, and at
connections to other equipment as required to prevent excessive strain on the connection.
I.
UNDERGROUND PIPING SUPPORT
1. Excavation, trenching and backfill shall be as specified under Division l5A General
Requirements.
PLUMBING PIPING
15140- 3
J. JOINTS
1. No-hub joints shall be made with a neoprene gasket and stainless steel retaining band.
Place the gasket on the end of one pipe and the retainer on the end of the other pipe. Firmly
seat the pipe ends against the shoulder of the gasket. Slide the retainer into position over
the gasket and tighten the clamps alternately and firmly to about 48 inch pound of torque.
2. Screwed joints shall be tapered thread type conforming to ASA B2.1. Threads to be cut
smooth and clean, and assembled using a joint compound. Tighten until joint if firm and leak
tight.
3. Caulked joints shall be made with lead and oakum. Clean the hub and insert spigot. Insert
an oakum strip into the joint and press in by hand, three turns around the pipes. Drive the
oakum to the bottom of the joint with a yarning iron, then pack the oakum solidly and evenly
using a packing iron and hammer. Place additional strands of oakum into the joint until it fills
the hub to within 1/2 inch of the top, then pack with iron and hammer until it forms a uniform
surface 1 inch from the top. Pour molten lead into the joint at one spot between the hub and
spigot until it arches up slightly above the top of the hub. When the lead has cooled, drive it
down at four points around the hub using a caulking iron. Caulk the inside and outside edges
of the joint using caulking irons and a 16 oz. ball peen hammer.
4. Mechanical coupling joints for grooved pipe shall be made in accordance with the coupling
manufacturer’s recommendations.
5. Solder joints shall be made in accordance with the recommendations of the Copper
Development Association and the fitting manufacturer. Measure tubing accurately to assure
that it reaches all the way into the socket of the fitting. Cut to exact length with square cut.
Ream to remove burrs and slivers. If tube is out of round, bring to true dimension and
roundness with sizing tool. Clean tube end of oil, grease and oxide by wiping and sanding
with 00 sand cloth or by using special cleaning pads or wire brushes. Do not remove metal.
Prevent particles from falling into tube. Clean socket in a similar manner. As soon as
possible after cleaning, cover surfaces to be joined with a thin film of flux. Thoroughly, stir
flux before using and apply with clean rag or brush. Assemble joint by inserting tube into
socket, firmly seating tube against end of socket. Twist joint to spread flux. Remove excess
flux with rag. Do not assemble joints more than three hours before soldering. Heat fitting
with propane, butane, air-acetylene or oxy-acetylene torch, applying heat evenly and over as
large an area as possible. Do not direct flame into socket and do not overheat. If the flux is
burned, remake the joint. When the joint is at the correct temperature, apply solder to the
socket and allow it to melt and be drawn into joint by capillary action. Alternate application of
heat and solder until joint is completely filled. Allow joint to cool naturally. Do not pre-tin
joints and do not make solder fillets. Solder shall be 95-5 tin antimony for pressure systems,
50-50 tin-lead for drainage systems.
6. Solvent-cement joints for plastic piping shall be made in strict accordance with the
manufacturer recommendations, using a solvent cement recommended by the piping
manufacturer. Maintain a copy of the instructions on the job at all times. Exercise care to
assure that pipe and fitting surfaces are clean and dry when joined.
7. Compression couplings, slip-fit couplings and mechanical joints shall be installed in strict
accordance with the manufacturers instructions. Maintain a copy of the instructions on the
job at all times. Exercise care to assure that pipe and fitting surfaces are clean and dry when
joined.
8. Dielectric coupling shall be provided at all joints between dissimilar metal pipes and between
dissimilar metal pipe and metal equipment connections.
9. Pipe couplings for use in connecting dissimilar materials and/or size shall be installed in strict
accordance with the manufacturers instructions.
K. DRAINAGE, WASTE AND VENT PIPING
1. Before any other work is initiated, verify the location and elevations of the discharge points to
determine if work can be installed as designed. Notify Architect/Engineer of any
discrepancies.
2. Install soil, drainage, and waste piping on a uniform grade of not less than 1/8" per foot for
piping 4 inches in diameter and larger, and not less than 1/4 inch per foot for smaller piping.
PLUMBING PIPING
15140- 4
3.
4.
Changes in direction in soil and drainage piping shall be made by the appropriate use of 45degree wyes, long sweep quarter bends, sixth, eighth, or sixteenth bends, or by a
combination of these fittings. Sanitary tees may be used in changing direction from
horizontal to vertical. Short sweeps 3-inches in diameter or over may be used to change
direction from horizontal to vertical or from vertical to horizontal.
Piping passing under a footing or through a foundation wall shall be bridged or sleeved.
Piping deeper than footings or bearing walls shall be installed outside the 45 degree angle of
influence line.
5.
TESTING
a. Testing of soil, drainage, waste, and vent piping shall be accomplished in the presence of
the plumbing inspector and a representative of the Architect/Engineer, unless otherwise
approved. Testing shall be completed prior to installation of fixtures or equipment which
may be damaged by the test, and prior to concealing the piping.
b. Drainage, waste and vent system shall be subjected to the water test and ball test.
c. The water test may be applied to the DWV system in its entirety or in sections. Close
openings in the system and fill with water to the point of overflow of the highest opening.
No section may be submitted to less than a 10 foot head except the uppermost 10 feet.
Water shall be applied to the system at least 15 minutes prior to inspection, and the
system shall be tight at that time.
d. Ball test shall be performed on all vents and stacks 3" diameter or larger. Test shall
consist of passing a wooden sewer ball not smaller than 1/2" less in diameter than the
pipe under test. The ball shall pass freely, under the action of gravity through the pipe
under test. Water may be used to assist in floating the ball through the pipe, but no other
means of assistance shall be used.
6.
APPLICATION
a. Soil, drainage and waste piping shall be cast iron or schedule 40 PVC, except that PVC
shall not be used in return air plenums, nor within fire rated construction. Cast iron shall
be coated, service weight, with hub and spigot or no-hub joints. Standard no-hub joints
shall be used above grade only. No-hub joints with cast iron couplings may be used
above grade and below grade. Hub-and-spigot joints shall be sealed with lead and
oakum, or an elastomeric gasket.
b. Vent piping shall be as specified for soil, drainage, and waste piping, or may be schedule
40 steel with screwed joints or grooved pipe mechanical couplings.
c. Building sanitary and storm sewers shall be as specified for soil, drainage, and waste
piping, or shall be plastic sewer pipe.
d. Plastic piping shall not be used where it would disrupt the rating of fire rated construction.
L. DOMESTIC WATER PIPING
1. Where practical, slope piping to drain to one system drain and to outlets. Where it is
necessary to form pockets, provide valved and capped drain connection on accessible
piping.
2. Install outside underground piping a minimum of 2'-0" below grade unless otherwise
indicated. Where piping must be installed in exterior construction, locate it on the warm side
(winter) of insulation.
3. Pipe shall be sizes indicated on plans or larger. Where size is not indicated, pipe shall be a
minimum of 1/2" for one fixture, 3/4" for two fixtures, but in no case less than the fixture
connection size and the size required by code.
4. Do not allow copper piping to come in contact with ferrous metals.
5.
TESTING
a. Testing of the water distribution system shall be accomplished in the presence of the
plumbing inspector and a representative of the Architect/Engineer, unless otherwise
PLUMBING PIPING
15140- 5
approved. Testing shall be completed prior to installation of fixtures or equipment which
may be damaged by the test, and prior to concealing the piping. Subject entire system to
a pressure test at not less than 25 psig above the indicated design working pressure, but
in no case less than 125 psig. Water for testing shall be obtained from a potable source.
6.
DISINFECTION
a. Disinfect the water distribution system by filling with a solution containing 100 ppm of
available chlorine and allow to stand 2 hours. During this time, open and close all valves
to assure that all parts of the system are disinfected. Flush system with potable water
and place in service.
7.
APPLICATION
a. Domestic water distribution piping shall be copper, with solder joints. Aboveground
piping shall be Type L or heavier, below grade piping shall be Type K or heavier.
b. Domestic water service piping shall be as specified for water distribution piping or shall
be ductile iron pressure piping for water service.
M. NATURAL GAS PIPING
1. GENERAL
a. Where practical, grade piping to a minimum number of low points, with a slope of not less
than one inch in 60 feet. Provide accessible drips at low points. Drips to be not less than
line size, and not less than 12" long. Branch connections to be taken from the top or
side. Gas piping shall not be installed in the same trench with other piping.
b. Regulators shall be equipped with vent piping leading to the outer air, or shall be fitted
with vent limiting devices, except that low-pressure regulators may be vented into a
combustion chamber with constantly burning pilot. Vent terminations shall be arranged
to prevent entry of water, and to prevent stoppage by insects or other foreign matter.
c.
2.
Final connections to gas fired equipment, including equipment furnished by others, shall
be made under this Section.
TESTING AND PURGING
a. Testing gas piping before concealing in the construction and before placing in service.
Test by applying pressure with air or an inert gas. Test pressure shall be a minimum of
twice the design working pressure, but in no case less than 10 psig, and 3 psig for
systems with a lower design pressure. The system shall be subjected to the pressure for
a minimum of 10 minutes without showing a drop in pressure. The test instrument shall
be an accurate and sensitive pressure sensor, graduated in not more than 1/4-pound
increments.
b. Immediately after turning gas on, check for leakage by attaching a manometer or
equivalent device to an appliance orifice, momentarily turning gas supply on, and
observing gauging device for a drop in pressure with the gas turned off. Gauging device
to be calibrated in increment of .1 inch water column. No discernible pressure drop shall
occur during a test period of 3 minutes.
c.
If leakage is indicated, determine source of leaks, repair leaks, and repeat test until
system proves to be leak tight.
d. After system has been proven to be leak tight, purge the system of air or inert gas by
disconnecting pilot piping at the pilot valve. Do not purge into combustion chambers, into
confined spaces, or into areas with ignition sources. After piping has been purged, purge
appliance with light pilots.
3.
APPLICATION
PLUMBING PIPING
15140- 6
a. Gas distribution piping shall be schedule 40 black steel with screwed, welded, or flanged
joints for piping 5 psig pressure and less, welded joint only for higher pressure, or may be
type L copper with solder joints where permitted by the Gas Company providing service.
Joints in steel piping shall be given corrosion protection equal to the polyethylene
coating.
N. COMPRESSED AIR PIPING
1. GENERAL
a. All compressed air piping and fittings shall be pickled and oiled.
b. Where practical, slope piping to drain to air compressor and to outlets. Where it is
necessary to form pockets, provide valved and capped drain connection on accessible
piping.
c.
Install piping to allow for flexibility and expansion. Provide flexible pipe connectors at
connections to air compressor.
2.
TESTING
a. Subject entire compressed air system to a pressure test at not less than 25 psig above
the indicated design working pressure, but in no case less than 225 psig. System shall
hold pressure for four hours.
3.
APPLICATION
a. Compressed Air piping shall be Schedule 40 seamless steel, ASTM A106. Fittings shall
be malleable iron, 300 lb. Joints shall be screwed or welded.
3.2 PIPE SYSTEMS IDENTIFICATION
A. Accessible pipe systems shall be identified with standard manufactured pipe marker, or pipe tags
for lines not large enough for markers. Apply marker on each side of each penetration of the
construction, at each connection to equipment, and at intervals of not more than 15 feet.
END OF SECTION 15140
PLUMBING PIPING
15140- 7
SECTION 15183 - PIPING REFRIGERANT AND DRAIN
1.0 GENERAL
1.1 SUMMARY
A. Mechanical General Provisions applies to this Section.
2.0 PRODUCTS
2.1 MATERIALS
A. Copper tubing, type ACR, shall conform to ASTM B 280.
B. Copper tubing, type M, shall conform to ASTM B 88.
C. Copper tubing, DWV, shall conform to ASTM B 306.
D. Plastic pipe shall be PVC conforming to ANSI K65.56.
E. Solvent cement shall conform to ASTM D-2564.
F. Moisture Indicator and Sight Glass
1. Provide combination liquid line sight glass and moisture indicator near refrigerant connection
to expansion valves.
G. Filter-Dryer
1. Provide combination catch-all strainer and dryer before expansion valve for each unit.
2. The fill shall be of molded core type, replaceable without disturbing piping.
3. Provide valve on each side of filter-dryer.
4. Throwaway dryers may be used for lines 5/8” OD and smaller.
3.0 – EXECUTION
A. Condensate Drainage piping
1. Piping shall be type M or type DWV copper, or schedule 40 PVC. Copper tubing shall have
solder joints. PVC shall not be used in return air plenums.
2. Provide vented traps with cleanouts at drain connections to equipment.
3. Piping shall be the same size as the connection provided by the equipment manufacturer or a
minimum one-inch diameter.
4. Slope piping uniformly from equipment to the discharge point. Support piping to prevent low
points, sags or traps. Provide accessible cleanouts in changes of direction of 45 degrees or
greater.
5. Piping shall be concealed in the construction except in equipment rooms.
B. Refrigerant piping
1. Piping shall be type ACR copper tubing, with brazed joints, except connections to the
equipment to be compatible with those provided on the units. Manufacturer’s standard pre-
PIPING REFRIGERANT AND DRAIN
15183 - 1
2.
3.
4.
5.
6.
charged tubing kits may be used on refrigeration circuits of 4 ton capacity of less, and 50 feet
in length or less.
Where piping size and arrangement is indicated on the drawings, it is based on a particular
refrigeration equipment manufacturers recommendations, based on specific equipment
requirements. Where substitutions of an alternate manufacturer’s equipment require
revisions to the size or arrangement, submit shop drawings for approval.
Where piping sizes are not indicated, size and arrangement shall be in accordance with
refrigeration equipment manufacturer’s recommendations.
Contractor shall submit piping diagram, showing pipe sizes and accessories, for approval
prior to installation. Diagram shall have been approved by the equipment manufacturer prior
to submittal.
Except as otherwise indicated, evacuation, testing, and charging shall be in accordance with
refrigeration equipment manufacturers recommendations.
Venting of refrigerant to the atmosphere is not permissible. Refrigerant shall be recovered as
required by local codes and regulations.
C. Sleeves
1. Provide sleeves around pipes passing through poured walls, floors, ceilings, partitions,
structural members, or other building components. Where pre-cast concrete, unit masonry,
or other non-poured construction is used, openings may be cut, drilled or formed by other
methods. Sleeves will not be required provided piping is arranged so as not to damage
construction in any way, and opening is neat and reasonably smooth. If opening is oversize
or irregular, provide sleeve as specified above and grout into construction. Floor sleeves
shall extend ¼” above the finished surface.
2. Annular space between pipe and sleeve in exterior walls and slabs or grade shall be filled
with a flexible non-hardening sealant to make the assembly permanently watertight. In fire
rated construction, the annular space shall be filled with a flexible fire resistive material to
prevent the spread of fire and smoke. For aboveground exterior wall penetrations, provide
neoprene seal.
D. Insulation
1. Insulate refrigerant suction piping and condensate drain piping with 3/4” thick elastomeric
foam insulation. Outside insulated piping shall be encased with aluminum jacketing.
END OF SECTION 15183
PIPING REFRIGERANT AND DRAIN
15183 - 1
SECTION 15410 - PLUMBING FIXTURES
1.0 - GENERAL
1.1 SUMMARY
A. Mechanical General Provisions applies to this Section.
2.0 - PRODUCTS
2.1 MATERIALS
A. Fixtures shall be manufacturer’s standard cataloged product, first line quality, standard color
unless otherwise indicated. Fixtures shall be equal to the model number noted on the schedule
and shall include all accessories as noted and as required for a complete installation.
B. Fixture Accessories - Unless indicated otherwise, fixture accessories shall be by the same
manufacturer as the fixtures.
C. Supplies shall be flexible wall type, with screwdriver or loose key stop, chrome plated.
D. Traps shall be tubular brass, minimum 17 gauge, adjustable, with swivel ell, and slip inlet, chrome
plated. PVC tail piece and trap may be substituted for brass.
E. Fittings shall be as scheduled, with exposed parts to be chrome plated (unless otherwise
indicated). Fittings shall be by the fixture manufacturer or an approved manufacturer listed below.
F. Toilet seats shall be as scheduled or if not scheduled, as recommended by the fixture
manufacturer. Seats shall be manufactured by fixture manufacturer or an approved manufacturer
listed below. Seats shall be white unless otherwise indicated.
G. Flush valves shall be as scheduled, or, if not scheduled, as recommended by the fixture
manufacturer.
H. Approved Manufacturers:
Fixtures (China):
American Standard, Crane, Eljer, Toto, Kohler and Zurn
Fixtures (Stainless Steel):
Elkay, Just and Kohler
Fixtures (Terrazzo):
Fiat, Cutler and Florestone
Flush Valves:
Sloan Royal, Toto and Zurn
Toilet Seats:
Beneke, Bemis, Church and Olsonite
Faucets:
Chicago, Delta, Symmons, T&S Brass and Zurn
Trim (Chrome):
BrassCraft, Just, McGuire, and Zurn
Shower Mixing Valves: Symmons, Leonard and Zurn
PLUMBING FIXTURES
15410 - 1
Shower Heads:
Symmons, Delta and Zurn
3.0 - EXECUTION
3.1 INSTALLATION
A. Install fixtures in accordance with manufacturer’s instructions.
B. Mount at heights and centers indicated on the Architectural and Plumbing drawings, or if not
indicated, in accordance with manufacturers roughing manual or as directed by the Architect.
Mount ADA fixtures at heights as required by the Americans with Disabilities Act.
C. Fixtures shall be installed level, parallel to the lines of the building, and tight against the mounting
surface. Noticeable variations will not be acceptable.
D. Connection sizes scheduled or indicated are the minimum acceptable sizes for the fixture branch,
and are not necessarily the same size as the fixture connection. Sizes on the plumbing plans or
risers govern over sizes in the schedule. Piping may be installed in sizes larger than indicated if
desired, in order to simplify layouts, reduce number of fittings, etc.
E. Escutcheons shall be provided at exposed pipe penetrations, including those inside cabinets.
Escutcheons shall completely cover the pipe opening and fit flush against the wall. Where the
rough-in extends into the space to prevent a standard escutcheon from fitting flush, deep
escutcheons may be used, or the rough-in shall be modified. In no case will the installation be
considered satisfactory until the escutcheon fits flush against the wall and completely covers the
opening.
F. Flush valves, supplies, traps, and other trim shall be mounted neatly, arranged parallel to the lines
of the fixture unless otherwise indicated. Rough-in shall be installed in such a manner that
exposed trim can be firmly secured to the wall. Loose fitting trim will not be acceptable.
Unnecessary offsets in drains and supplies will not be acceptable. Arrange piping inside cabinets
to interfere as little as possible with storage space.
G. Provide stop valve in the water supply to each fixture in an accessible location.
H. Seal cracks between fixtures and mounting surfaces with a non-hardening sealant. Sealant shall
be white for white fixtures, and shall be clear or an approved color for other fixtures.
I.
Clean all fixtures, trim and strainers using manufacturer’s recommended cleaning methods and
materials. Remove all labels.
J. Provide minimum 2 sq. ft. waterproofing membrane at each floor drain. Clamp membrane to floor
drain flashing flange.
K. Provide deep deal trap for each floor drain. Provide trap primer where noted on the drawings.
END OF SECTION 15410
PLUMBING FIXTURES
15410 - 2
SECTION 15415 – ELECTRIC WATER COOLERS
1.0 - GENERAL
1.1 SUMMARY
A. Mechanical General Provisions applies to this Section.
2.0 - PRODUCTS
A. Water coolers shall be “lead free” as defined by the Safe Drinking Water Act and the Lead
Contamination Control Act.
B. Water coolers shall be equipped with a140 micron strainer, approved by ANSI / NSF 61.
C. Cabinet shall be minimum 20 gauge removable, color as noted in fixture schedule or as selected
by the Architect.
D. Fountain top shall be stainless steel, contoured to eliminate splashing and shall have removable
drain strainer.
E. Projector shall be chrome-plated brass, with hood guard.
F. Valve shall be self-closing, push button operated unless otherwise scheduled, with brass stream
regulator. Regulator shall maintain constant stream height under water pressures from 20 to 90
psig.
G. Storage tank shall be tested for 125 psig working pressure.
H. Thermostat for cooling coil and storage tank shall be factory set for 50 degree F, with +5 degree
adjustment.
I.
Motor-compressor to be hermetically sealed, with starting capacitor, permanently lubricated and
built-in overload protection. Refrigeration system shall have a 5-year warranty.
J. Wall mounting bracket shall be furnished with wall-mounted coolers, unless otherwise indicated.
K. Unit shall be ARI certified to meet standard 1010. Capacities indicated are based on delivering 50
degrees water at a room temperature of 90 degrees and an incoming water temperature of 80
degrees.
L. ADA water coolers shall be fully compliant with the requirements of the Americans with Disabilities
Act.
M. Approved manufacturers are Elkay, Halsey-Taylor, Oasis and Sunroc.
ELECTRIC WATER COOLERS
15415- 1
3.0 - EXECUTION
3.1 INSTALLATION
A. Install water cooler in accordance with manufacturer’s instructions. See Section "Plumbing
Fixtures" for detailed installation requirements.
B. Secure wall mounting brackets to building structure using wood blocking or steel unistrut channels.
C. Install ADA water coolers at the required height to meet ADA requirements.
END OF SECTION 15415
ELECTRIC WATER COOLERS
15415- 2
SECTION 15430 - PLUMBING SPECIALTIES
1.0 - GENERAL
1.1 SUMMARY
A. Mechanical General Provisions applies to this Section.
2.0 - PRODUCTS
2.1 MATERIALS
A. Water Hammer Arrestors shall be certified to conform to A.S.S.E. Standard 1010. Units shall be
stainless steel shell, with welded stainless steel or elastomeric bellow, precharge with air, nitrogen
or argon. Units shall be Zurn "Shoktrol", Smith "Hydrotrol", or Wade "Shokstop".
B. Fixture and Equipment Supports
1. Provide supports as scheduled or if not schedule, as required to suit the job conditions,
based on fixture manufacturer or support manufacturers published recommendations unless
otherwise indicated supports shall be floor mounted. Supports to be by fixture manufacturer,
or by Zurn, Josam, Smith or Wade.
C. Cleanouts
1. Floor cleanouts shall consist of a body, head, top, plug, lead seal, securing screw, thread
shield, and, where required for water proof floor, a membrane flashing flange and clamping
collar. The body shall be cast iron, with threaded top to receive the head, and spigot body
with cutoff grooves or with inside caulk connection as required. The head shall be cast iron,
threaded to mate with the body. Head and body shall be designed to provide a minimum of
two inches vertical adjustment. Top shall be heavy duty, scored, nickel bronze, round unless
otherwise indicated. Provide recessed top for terrazzo where required. Provide carpet
markers where required. The plug shall have straight threaded, loose fitting, cadmium plated
threads. Lead seal shall make the plug gas-tight and water tight. Thread shield shall protect
adjustment threads from concrete, yet shall be easily removable after concrete has been set.
Top shall be adjustable after concrete has set.
2. Wall cleanout covers, unless otherwise indicated, shall be a round stainless steel or chrome
plated plate with single securing screw. Plate shall have beveled edge, and shall be large
enough to completely cover the opening at the cleanout.
3. Cleanouts for exposed piping shall be a threaded cast bronze countersunk plug with nonhardening lubricant. Where piping is not threaded, provide suitable adapters.
4. Outside cleanout covers shall be cast iron in a cast iron frame, except that cleanouts in
sidewalks shall have nickel bronze tops, and cleanouts in pavement shall be designed for
mounting in a below-grade concrete pad.
5. Floor and yard cleanout covers in traffic areas shall be heavy-duty type. Yard cleanouts shall
be installed in an 18" X 18" X 4" thick concrete slab.
D. Other plumbing specialties shall be as scheduled on the drawings, or equivalent by J.R. Smith,
Wade, Zurn or other manufacturer approved prior to bidding.
PLUMBING SPECIALTIES
15430- 1
3.0 - EXECUTION
3.1 INSTALLATION
A. Install water hammer arrestors in an upright position. Provide minimum one per each restroom.
Size and install per manufacturer’s instructions.
B. Floor drains must be set at the correct elevation for proper flow to the drain. Under this Section,
set the elevation as directed by the Section installing the finished floor. Standing water or
excessive slope at the drain will not be acceptable and shall be corrected.
C. Provide cleanouts where indicated on the drawings, at changes in direction of more than 45
degrees, at the base of vertical soil and waste stacks, at the junction of the building drain and
building sewer, and at intervals of not more than 100 feet or as required by local codes.
D. Cleanouts shall be of the same nominal size as the pipes up to 4" and not less than 4" for larger
piping, unless otherwise indicated or required by code.
E. Cleanouts in concealed piping not easily accessible through removable building construction shall
be extended through and terminated flush with the finished surface and fitted with an access
cover.
F. Cleanouts shall be installed flush with the finished surface. Where cleanouts must be installed
before the finish is installed, set the cleanout at the exact location specified by the Section
installing the finish. Cleanouts not flush with the finish surface shall be corrected.
END OF SECTION 15430
PLUMBING SPECIALTIES
15430- 2
SECTION 15671 - OUTDOOR AIR COOLED HEAT PUMP UNIT
1.0 - GENERAL
1.1 SUMMARY
A. HVAC General Provisions applies to this Section.
B. Units shall comply with the 2009 International Energy Conservation Code.
2.0 PRODUCTS
A. SYSTEM DESCRIPTION
1. The variable capacity, heat pump air conditioning system shall be a Daikin Variable
Refrigerant Volume Series (heat/cool model) split system or equal. The outdoor unit shall
be a direct expansion (DX), air-cooled heat pump air-conditioning system, variable speed
driven compressor multi zone split system, using R410A refrigerant. The outdoor unit
may connect an indoor evaporator capacity up to 130% to that of the outdoor condensing
unit capacity. All indoor units are each capable of operating separately with individual
temperature control.
2. The outdoor unit shall be interconnected to indoor unit models as specified on the drawings
and shall range in capacity from 12,000 Btu/h to 48,000 Btu/h in accordance with the
manufacturer’s engineering data book detailing each available indoor unit. The indoor
units shall be connected to the outdoor utilizing the manufacturer’s specified piping joints
and headers.
B. QUALITY ASSURANCE
1. The units shall be listed by Electrical Laboratories (ETL) and bear the ETL label.
2. All wiring shall be in accordance with the National Electric Code (NEC).
3. The system will bear the Energy Star label.
4. The system will be produced in an ISO 9001 and ISO 14001 facility, which are standards set
by the International Standard Organization (ISO). The system shall be factory tested for
safety and function.
C. The outdoor unit will be factory charged with R410A refrigerant.
D. DELIVERY, STORAGE AND HANDLING
1. Unit shall be stored and handled according to the manufacturer’s recommendations.
E. WARRANTY
1. The units shall have a manufacturer’s warranty for a period of one (1) year from date of
installation. The units shall have a limited labor warranty for a period of one (1) year from
date of installation. The compressors shall have a warranty of six (6) years from date of
installation. During the stated period, should any part fail due to defects in material and
workmanship, it shall be repaired or replaced at the discretion of the manufacturer’s
Terms and Conditions.
F. INSTALLATION REQUIREMENTS
1. The system must be installed by a manufacturer’s factory trained and certified contractor.
G. Performance
OUTDOOR AIR COOLED HEAT PUMP UNIT
15671 - 1
1. OPERATING RANGE: The operating range in cooling will be 23°F DB ~ 115°F DB. The
operating range in heating will be 0°F DB – 64°F DB / -5°F WB – 60°F WB.
H. REFRIGERANT PIPING: The system shall be capable of refrigerant piping up to 410 equivalent
feet, a total combined length of 1000 feet of piping between the condensing and fan coil units
with 165 feet maximum vertical difference, without any oil traps or additional equipment. In case
where the outdoor unit is located below the indoor unit, the vertical difference is a maximum of
133 feet.
I.
OUTDOOR UNIT
1. General: The outdoor unit shall be designed specifically for use with the specified indoor
components.
2. The outdoor unit shall be factory assembled and pre-wired with all necessary electronic and
refrigerant controls. The refrigeration circuit of the condensing unit shall consist of a
digital scroll compressor, motors, fans, condenser coil, electronic expansion valve,
solenoid valves, 4 way valve, distribution headers, capillaries, filters, shut off valves, oil
separators, service ports, liquid receivers and accumulators.
3. Both liquid and suction lines must be individually insulated between the outdoor and indoor
units.
4. The outdoor unit can be wired and piped with outdoor unit access from left, right, rear or
bottom.
5. The connection ratio of indoor units to outdoor unit will be 50% to 130%.
6. The sound pressure dB(A) at rated conditions shall be a value of 58 decibels at 3 feet from
the front of the unit. The outdoor unit shall be capable of operating at further reduced
noise during night time.
7. The system will automatically restart operation after a power failure and will not cause any
settings to be lost, thus eliminating the need for re-programming.
8. The outdoor unit shall be modular in design and should allow for side-by-side installation with
minimum spacing.
9. The following safety devices shall be included on the condensing unit; high pressure switch,
control circuit fuses, crankcase heaters, fusible plug, high pressure switch, overload
relay, inverter overload protector, thermal protectors for compressor and fan motors,
over current protection for the inverter and anti-recycling timers. To ensure the liquid
refrigerant does not flash when supplying to the various fan coil units, the circuit shall be
provided with a sub-cooling feature. Oil recovery cycle shall be automatic occurring 1
hour after start of operation and then every 6 hours of operation.
10. The outdoor unit shall be capable of heating operation at 0°F dry bulb ambient
temperature without additional low ambient controls.
11. Unit Cabinet: The outdoor unit shall be completely weather proof and corrosion
resistant. The unit shall be constructed from rust-proofed mild steel panels coated with a
baked enamel finish.
12. Fan:
a.
The outdoor unit shall include one propeller type, direct-drive fan 750 W motors
that have multiple speed operation via a DC inverter.
b.
The outdooe unit fan motor shall have multiple speed operation of the DC inverter
type, and be of high external static pressure and shall be factory set as standard at
0.12 in. WG with available by field setting switch to a maximum 0.24 in. WG
pressure.
c.
The fan shall be a vertical discharge configuration with an air flow of 7,400 cfm.
d.
The fan motor shall have inherent protection and permanently lubricated bearings
and be mounted.
e.
The fan motor shall be provided with a fan guard to prevent contact with moving
parts.
OUTDOOR AIR COOLED HEAT PUMP UNIT
15671 - 2
13.
14.
15.
Outdoor Coil:
a.
The outdoor coil shall be manufactured from copper tubes expanded into
aluminum fins to form a mechanical bond.
b.
The coil shall be of a waffle louver fin and high heat exchanger, rifled bore tube
design to ensure highly efficient performance.
c.
The coils shall be complete with corrosion treatment of an acrylic resin type. The
thickness of the coating must be between 2.0 to 3.0 microns.
Compressor:
a.
The digital scroll compressor shall be variable speed (PAM inverter) controlled
which is capable of changing the speed to follow the variations in total cooling load
as determined by the suction gas pressure as measured in the condensing unit.
b.
The inverter driven compressor in each condensing unit shall be of highly efficient
reluctance DC, hermetically sealed scroll type with a maximum speed of 6,480
rpm.
c.
Neodymium magnets shall be adopted in the rotor construction to yield a higher
torque and efficiency in the compressor instead of the normal ferrite magnet type.
At complete stop of the compressor, the neodymium magnets will position the rotor
into the optimum position for a low torque start.
d.
The capacity control range shall be 14% to 100%, with 29 individual capacity
steps. Each non-inverter compressor shall also be of the hermetically sealed scroll
type.
e.
Each compressor shall be equipped with a crankcase heater, high pressure safety
switch, and internal thermal overload protector.
f.
Oil separators shall be standard with the equipment together with an oil balancing
circuit.
g.
The compressor shall be mounted to avoid the transmission of vibration.
Electrical:
a.
The power supply to the outdoor unit shall be 208/230 volts, 3 phase, 60 hertz with
a voltage range from 187 volts to 253 volts.
b.
The control voltage between the indoor and outdoor unit shall be 16VDC nonshielded 2 conductor cable.
c.
The control wiring shall be a two-wire multiplex transmission system, making it
possible to connect multiple indoor units to one outdoor unit with one 2-cable wire,
thus simplifying the wiring operation.
J. Approved manufacturers are Daikin, Mitsubishi and Sanyo.
OUTDOOR AIR COOLED HEAT PUMP UNIT
15671 - 3
3.0 - EXECUTION
1.2 INSTALLATION
A. Install units in accordance with manufacturer’s instructions, observing recommended clearances
for servicing and airflow. Mount on min. 4-inch thick concrete pad.
B. Install refrigerant piping in strict accordance with manufacturer’s guidelines. Pipe sizes and fittings
shall be as sized by the manufacturer.
C. Test units under all operating conditions prior to turning system over to Owner.
D. Provide on-site Owner instruction (min. 4 hours).
END OF SECTION 15671
OUTDOOR AIR COOLED HEAT PUMP UNIT
15671 - 4
SECTION 15731 – DUCTLESS SPLIT SYSTEM HEAT PUMPS
1.0 - GENERAL
1.1 SUMMARY
A. HVAC General Provisions applies to this Section.
B. Units shall comply with the 2009 International Energy Conservation Code.
2.0 - PRODUCTS
2.1 MATERIALS
A. General: The indoor unit shall be a ceiling mounted cassette (CMC) fan coil unit, operable with
R410A refrigerant, equipped with an electronic expansion valve, for installation into the ceiling
cavity equipped with an air panel grille. It shall be available from 12,000 Btu/h to 36,000 Btu/h.
Model numbers are as indicated on the drawings. Units shall be connected to outdoor heat
pump unit as indicated on the drawings. It shall be a four-way air distribution type, ivory white,
impact resistant, and washable decoration panel. The supply air is distributed via motorized
louvers which can be horizontally and vertically adjusted from 0° to 90°. Computerized PID
control shall be used to maintain room temperature within 1°F. The indoor units sound
pressure shall range from 28 dB(A) to 33 dB(A) at low speed measured at 5 feet below the unit.
Units shall be Daikin model FXFQ or approved equal.
B. Performance: Each unit’s performance is based on nominal operating conditions: Refer to
schedule on the drawings for performance criteria.
C. Indoor Unit:
1. The indoor ceiling mounted cassette unit shall be completely factory assembled and tested.
Included in the unit is factory wiring, piping, electronic proportional expansion valve,
control circuit board, fan motor thermal protector, flare connections, condensate drain
pan, condensate drain pump, self-diagnostics, auto-restart function, 3-minute fused time
delay, and test run switch.
2. Indoor unit and refrigerant pipes will be charged with dehydrated air prior to shipment from
the factory.
3. Both refrigerant lines shall be insulated from the outdoor unit.
4. The 4-way supply air flow can be field modified to 3-way and 2-way airflow to accommodate
various installation configurations including corner installations.
5. Return air shall be through the concentric panel, which includes a resin net mold resistant
filter.
6. The indoor units shall be equipped with a condensate pan and condensate pump. The
condensate pump provides up to 21” of lift.
7. The indoor units shall be equipped with a return air thermistor.
8. The indoor unit will be separately powered with 208~230V/1-phase/60Hz.
9. The voltage range will be 253 volts maximum and 187 volts minimum.
10. Unit Cabinet: The cabinet shall be space saving and shall be located into the ceiling.
11. Three auto-swing positions shall be available to choose, which include standard, draft
prevention and ceiling stain prevention. The airflow of the unit shall have the ability to
shut down one or two sides allowing for simpler corner installation.
DUCTLESS SPLIT SYSTEM HEAT PUMPS
15731 - 1
12.
13.
14.
15.
16.
The cabinet shall be constructed with sound absorbing foamed polystyrene and
polyethylene insulation.
Fan: The fan shall be direct-drive turbo fan type with statically and dynamically balanced
impeller with high and low fan speeds available. The fan motor shall operate on 208/230
volts, 1 phase, 60 hertz with a motor output range from 0.06 to 0.12 HP. The air flow rate
shall be available in high and low settings. The fan motor shall be thermally protected.
Filter: The return air shall be filtered by means of a washable long-life filter with mildew
proof resin.
Coil: Coils shall be of the direct expansion type constructed from copper tubes expanded
into aluminum fins to form a mechanical bond. The coil shall be of a waffle louver fin and
high heat exchange, rifled bore tube design to ensure highly efficient performance. The
coil shall be a 2 row cross fin copper evaporator coil with 17 FPI design completely
factory tested.
The refrigerant connections shall be flare connections and the condensate will be 1 -1/4
inch outside diameter PVC.
D. Condensate pan shall be located under the coil.
E. Condensate pump with a 21 inch lift shall be located below the coil in the condensate pan with a
built in safety alarm.
F. Thermistor shall be located on the liquid and gas line.
G. Electrical:
1. A separate power supply will be required of 208/230 volts, 1 phase, 60 hertz. The acceptable
voltage range shall be 187 to 253 volts.
2. Transmission (control) wiring between the indoor and outdoor unit shall be a maximum of
3,280 feet (total 6,560 feet).
3. Transmission (control) wiring between the indoor and remote controller shall be a maximum
distance of 1,640 feet.
H. Control:
1. The unit shall have controls provided by Daikin to perform input functions necessary to
operate the system including electronic wall mounted thermostat with fan controls.
2. The unit shall be compatible with interfacing with connection to LonWorks networks or
interfacing with connection to BMS system. Consult with Daikin prior to applying controls.
3. Provide remote “in-room” sensor kit (KRCS01-1).
4. Provide wall mounted, hard wired remote sensor kit for ceiling-embedded type fan coils.
I. Approved manufacturers are Daikin, Mitsubishi and Sanyo.
DUCTLESS SPLIT SYSTEM HEAT PUMPS
15731 - 2
3.0 - EXECUTION
3.1 INSTALLATION
A. Install in units accordance with manufacturers instructions.
B. Provide refrigerant piping in accordance with manufacturer’s sizing and installation guidelines.
C. Install condensate drain piping from each unit to outside drywell in accordance with manufacturer’s
instructions.
END OF SECTION 15731
DUCTLESS SPLIT SYSTEM HEAT PUMPS
15731 - 3
SECTION 15732 – PACKAGED ROOFTOP UNITS
1.0 - GENERAL
1.1 SUMMARY
A. Mechanical General Provisions applies to this Section.
2.0 - PRODUCTS
A. Units shall be single-package air-cooled electrically driven, factory assembled, piped, wired,
charged, tested, and ready for operation when connected to duct work and power supply. Units
shall be designed for outdoor installation, mounted on a roof curb.
B. Units shall be high-efficiency design and shall comply with the requirements of the 2009
International Energy Conservation Code and ASHRAE Standard 90.1.
C. Unit shall be capable of operating in temperatures as high as 120 degrees F and as low as 30
degrees F or as low as scheduled. Low ambient control may be by condenser fan cycling,
condenser fan speed control, or discharge dampers on the condenser fan.
D. Units shall be U.L. Labeled and shall be rated in accordance with ARI Standard 210.
E. Casing shall be fabricated of zinc-coated steel, finished in baked enamel. Panels shall be
removable for access to components. Evaporator section shall be insulated with fiberglass.
Evaporator drain pan shall be sealed, insulated, and fitted with threaded drain connection. Access
panels shall be weather-stripped.
F. Compressors shall be welded shell hermetic scroll type with centrifugal type oil pumps, vibration
isolation, crankcase heaters and sound muffling.
G. Refrigeration circuit shall include sub-cooling circuit, service valves, strainer, suction line
accumulator, and filter dryer. Refrigeration control shall be by thermal expansion valve. Filter
dryer and thermal expansion valves are not required on units 4 tons and smaller.
H. Controls shall be factory wired microprocessor based, capable of communication with the Building
Management System including control and diagnostic functions. Controls shall include
compressor, condenser fan, and evaporator fan contactors and 24-volt transformer. Safety
controls shall provide protection against compressor motor over temperature, over current, locked
rotor, high voltage, extreme operating pressures, loss of refrigerant and compressor rapid cycling.
I.
Coils shall be aluminum plate fin on aluminum or copper tubes, factory pressure and leak tested.
J. Evaporator fan shall be centrifugal type, forward curved, belt driven with permanently lubricated
fan and motor bearings. Motor/fan shall be resiliently mounted. Motor shall have thermal
overload protection. Direct drive fan is acceptable on units 4 tons and smaller.
K. Condenser fan shall be direct drive, statically and dynamically balanced propeller type. Fan motor
shall be permanently lubricated, resiliently mounted, weatherproof, U.L. Listed for outdoor use,
with built in thermal overload protection.
PACKAGED ROOFTOP UNITS
15732 - 1
L. Gas fired heating section shall be integral within unit, completely assembled, wired, and piped.
Design shall be A.G.A. certified for outdoor application.
M. Heat exchanger shall be formed from aluminized steel, factory leak tested, free floating design,
located upstream of cooling coil.
N. Burners shall be stamped seam welded aluminized steel.
O. Forced combustion blower shall have permanently lubricated motor, located out of the exhaust
gas stream.
P. Automatic spark ignition system shall be spark plug energized to light pilot only when required.
Thermocouple shall energize ignition system to re-light pilot in the event of an outage.
Q. Provide 5-year compressor warranty.
R. Provide motorized modulating economizers with exhaust fans and CO sensors as indicated on the
drawings.
S. Provide 1" thick pleated-media filters.
T. Approved manufacturers are Trane, Carrier, Lennox, and York.
3.0 - EXECUTION
3.1 INSTALLATION
A. Install equipment in accordance with manufacturer’s instructions on minimum 12” high fullperimeter roof curb. Coordinate exact locations with existing building structure and architectural
drawings. Coordinate with existing roof slope to obtain level top.
B. Extend condensate drain as directed on the drawings.
C. Provide accessories as specified on the drawings.
D. Connect ductwork as indicated on the drawings.
PACKAGED ROOFTOP UNITS
15732 - 2
SECTION 15815 – DUCTWORK
1.0 - GENERAL
1.1 SUMMARY
A. Mechanical General Provisions applies to this Section.
B. Duct mounted equipment, control devices, and instruments provided under other Sections shall be
mounted herein.
C. Unless otherwise indicated and where clearances permit, duct indicated to be rectangular may be
equivalent round size, and duct indicated to be round may be equivalent rectangular size.
D. Where required to clear field obstructions, dimensions shall be changed as necessary, maintaining
an equivalent free area. Where this is not practical, consult Architect for instructions.
E. It is the responsibility of the contractor to coordinate with all trades to assure that a proper return
air path from each space to the air moving device serving that space is provided, where only an
opening in the construction is required. This provision does not include ductwork, louvers, grilles,
dampers, etc., except as specified or shown on the drawings.
F. Duct liner R-values shall comply with the 2009 International Energy Conservation Code.
2.0 - PRODUCTS
2.1 MATERIALS
A. Galvanized steel sheet shall be cold rolled, hot dipped, lock forming quality, with a galvanized
coating of 1 1/4" ounces total for both sides of one square foot of sheet.
B. Vibration isolation connectors shall not exceed 10" in length, shall be flame retardant fabric, and
shall have a flame spread rating not exceeding 25 and a smoke developed rating not exceeding
50. Isolation connection shall be equal to "VENT GLASS".
C. FLEXIBLE DUCT
1. Ducts shall conform to the requirements for Class 1 connectors when tested in accordance
with U.L. Standard for Factory Made Air Duct Materials and Air Duct Connectors and shall be
U.L. 181 Listed.
2. Flexible ducts shall not exceed 6 feet in length.
3. Ducts used in concealed spaces constructed in part with combustible materials shall also
pass the 15-minute U.L. flame penetration test.
4. Flexible ductwork shall be pre-insulated type with Trilaminate inner fabric and reinforced
metalized outer jacket. Flexible ductwork shall be Flexmaster Type 5M or equal by Flexmold
or Thermaflex.
5. Spin-in connectors shall be galvanized sheet metal, conical type. Balancing dampers shall
be factory installed “butterfly” type, with a positive locking wing nut for easy readjustment
when needed. Provide insulation extension bracket for externally insulated runouts.
Connectors for lined ductwork shall have an extension to terminate flush with the inside face
of the liner.
6. Duct sealer shall be equivalent to Benjamin Foster #3002.
DUCTWORK
15815- 1
7.
8.
Duct tape shall be SMACNA approved type and width.
Coupling, adapters, clamps and other accessories shall be as recommended by the
manufacturer.
D. EXPOSED DUCTWORK
1. Sheetmetal ductwork with flanged and gasketed joints.
2. Exposed rectangular ductwork shall be lined with thermal duct liner with anti-microbial
coating.
3. Duct is intended for an exposed decorative application, and shall be manufactured, handled,
packaged, and shipped to minimize dents and scratches.
3.0 - EXECUTION
3.1 INSTALLATION
A. Sheetmetal ductwork shall be fabricated and installed in accordance with the following:
1. SMACNA "HVAC Duct Construction Standards, Metal and Flexible".
2. NFPA 90, Standard for the Installation of Air Conditioning and Ventilating Systems
B. Except as otherwise indicated or required by code, ductwork shall be galvanized sheetmetal.
Flexible ductwork may be used for supply air run-outs to diffusers only. Flexible ductwork may not
be used for return air or exhaust air ductwork.
C. Supply ductwork downstream of variable air volume terminals and all return, exhaust, and outside
air ductwork shall be classified as low pressure. Ductwork upstream of VAV terminals shall be
classified as high-pressure.
D. Square elbows shall have factory fabricated single-thickness turning vanes with trailing edge.
E. Radius elbows shall be long radius type where space permits. Elbow radius shall be equal to
cheek dimension, but not less than 6".
F. Rectangular branch ducts for low-pressure outlets shall have 45-degree branch duct fittings with
manual volume damper.
G. Round branch ducts for low-pressure outlets shall have conical spin-in fittings with butterfly
damper.
H. Branch takeoffs for high-pressure ductwork shall be conical type.
I.
Hangers shall be designed to support three times the weight of the duct, plus duct mounted
equipment, plus 250 pounds where the duct is subject to being walked on.
J. Provide vibration isolation connections at the inlet and discharge of vibration producing equipment.
K. Connection of flexible ducts to rigid ductwork shall be through the use of factory-fabricated
takeoffs.
L. Flexible duct splices and duct terminations shall be made in accordance with the manufacturer’s
recommendations, and shall be sealed with duct sealer. Vapor barriers shall be sealed with tape.
M. Support flexible ductwork at intervals to provide a smooth air flow path, without sharp bends. Do
not use suspended ceilings for duct support.
DUCTWORK
15815- 2
N. Flexible duct lengths shall be as short as is practical, 6 ft. maximum. The maximum allowable
bend in flexible duct is 45-degrees. Use rigid sheet metal elbows where greater bends are
required.
O. In fire rated construction, the annular space around duct shall be filled with a flexible fire resistive
material to prevent the spread of fire and smoke.
END OF SECTION 15815
DUCTWORK
15815- 3
SECTION 15837 – ROOF EXHAUST FANS
1.0 - GENERAL
1.1 SUMMARY
A. Mechanical General Provisions applies to this Section.
B. Fans shall comply with the 2009 International Energy Conservation Code.
2.0 - PRODUCTS
2.1 MATERIALS
A. Fans shall bear AMCA Ratings Seal and AMCA Certified Sound Ratings Seal.
B. Roof exhaust fans shall be centrifugal belt-driven type. Fan wheel shall be aluminum or steel,
backwardly inclined, statically and dynamically balanced and shall include a wheel cone carefully
matched to the inlet cone for precise running tolerances.
C. Fan hood and motor cover shall be heavy gauge spun aluminum. The fan shroud shall have a
rolled bead for added strength. Bird screen at fan outlet shall be aluminum or PVC coated steel.
D. Provide gravity backdraft damper unless otherwise indicated.
E. Motor and drive components shall be resiliently mounted, located out of the air stream in a
compartment positively ventilated by outside air. Motors and drives shall be readily accessible for
maintenance. A disconnect switch shall be factory installed and wired from the fan motor to a junction
box installed within the motor compartment. Motors shall be permanently lubricated, heavy duty type,
selected for non-overloading operation at the specified voltage and phase.
F. Bearings shall be permanently sealed, lubricated pillow block type ball bearings, selected for a
minimum (L50) life in excess of 200,000 hours at maximum cataloged operating speed. Motor pulleys
shall be adjustable for final system balancing.
G. Provide minimum 10-inch high steel roof curb with wood nailer.
H. Approved manufacturers are Greenheck, Breidert, Cook and Twin City.
3.0 - EXECUTION
3.1 INSTALLATION
A. Install fan in accordance with manufacturer’s instructions.
B. Coordinate installation with roofing subcontractor.
C. Refer to details on the drawings.
END OF SECTION 15837
ROOF EXHAUST FANS
15837 - 1
SECTION 15838 - CEILING EXHAUST FANS
1.0 - GENERAL
1.1 SUMMARY
A. Mechanical General Provisions applies to this Section.
2.0 - PRODUCTS
2.1 MATERIALS
A. Fans shall bear AMCA Ratings Seal and AMCA Certified Sound Ratings Seal.
B. Fan housing shall be constructed of heavy gauge galvanized steel in a rectangular box
configuration. The housing interior shall be lined with ½” thick acoustical insulation. The fan
housing shall include rectangular duct connection collars. Ceiling exhaust fans shall include
integral ceiling grille constructed of aluminum or white plastic. Provide gravity backdraft damper at
the fan discharge.
C. Fans shall be equipped with U.L. classified ceiling radiation dampers. Fan and radiation damper
shall be factory assembled and shall be U.L. listed as an assembly.
D. The fan wheel shall be forward curved, centrifugal type, constructed of galvanized steel. Wheels
shall be statically and dynamically balanced.
E. Motors shall be heavy-duty type with permanently sealed ball bearings. Drive type shall be as
indicated on the drawings.
F. Fan and Motor assembly shall be mounted on vibration isolators, type and deflection as specified
on the drawings.
G. Provide SCR speed controllers for balancing purposes.
H. Approved manufacturers are Greenheck, Breidert, Cook and Twin City.
3.0 - EXECUTION
3.1 INSTALLATION
A. Install fans in accordance with manufacturer’s instructions.
B. Provide motor starters as specified on the drawings and in other sections.
C. Provide accessories as specified on the drawings.
D. Mount SCR speed controllers on inside of fan housing to be accessible from grille opening. Test
& Balance Contractor shall adjust fan speed to specified airflow.
CEILING EXHAUST FANS
15838 - 1
SECTION 15855 - DIFFUSERS, REGISTERS & GRILLES
1.0 - GENERAL
1.1 SUMMARY
A. Mechanical General Provisions applies to this Section.
2.0 - PRODUCTS
2.1 MATERIALS
A. Products shall be as scheduled on the drawings. Selections are based on the manufacturers
scheduled. Units by other manufacturers shall be re-selected in accordance with published
performance data to provide the air patterns, velocities, pressure drops, and sound characteristics
equal to the unit scheduled. The re-selection shall be certified by a letter submitted as part of the
shop drawing submittal.
B. Approved manufacturers are Titus, Carnes, Krueger, Metalaire and Tuttle & Bailey.
3.0 - EXECUTION
3.1 INSTALLATION
A. Coordinate exact location with lighting fixtures, structure and other obstructions. If in doubt about
exact location, coordinate with Architect.
B. Install in accordance with manufacturers instructions, parallel to the lines of the building, and tight
against the finished surface. Margins to fully overlap openings in surfaces so that openings are
not visible from the finished room. Units shall be adequately secured to prevent movement when
dampers are adjusted. Dampers shall be mounted so that damper binding does not occur.
Except as otherwise approved by the Architect or required by field conditions, units shall be
symmetrical, equidistant from walls or other major building lines and symmetrical in ceiling grids.
C. Undercut and louvered doors are indicated to show return and exhaust air path only, and shall be
provided under another Division of these specifications.
D. Door grilles shall be furnished herein and installed under another Division.
E. Color of grilles, registers and diffusers shall be selected by the Architect, except where color is
scheduled on drawings.
END OF SECTION 15855
DIFFUSERS, REGISTERS & GRILLES
15855- 1
SECTION 15900 – CONTROLS
1.0 - GENERAL
1.1 SUMMARY
A. HVAC General Provisions applies to this Section.
2.0 - PRODUCTS
A. Control devices shall be provided by the controlled equipment manufacturer, or by Honeywell,
Johnson Controls, or Siebe.
B. Electronic programmable room thermostats shall be single or multi-stage, heating and cooling type
as required for the control sequence specified elsewhere herein. Thermostats shall have
accessible set point, heating and cooling anticipation, seven day scheduling with occupied and
unoccupied mode, fan on/auto function programming and digital temperature readout.
C. Electric room thermostats shall be single or multi-stage, heating only, cooling only, or heating and
cooling as required for the control sequence specified elsewhere herein. Sub-base shall include
fan "on-auto" switch and system "heat-off-auto-cool" switch. Thermostats shall have accessible
set point, heating and cooling anticipation, and thermometer.
D. Limit thermostats shall be of the manual reset type. Freeze protection thermostats shall be
provided with a twenty-foot sensing element, which shall respond to the lowest temperature to
which any one-foot portion is exposed.
E. Time clock shall be seven-day, multi-channel electronic programmable type with “occupied” and
“unoccupied” modes.
F. Mark-time switch shall be rotary type, spring driven, with adjustable time capacity from 0 to 4
hours. Timer shall be calibrated in increments not larger than 15 minutes each. Mark time switch
shall have manual "on" position.
G. Firestats shall be duct mounted bulb type, manual reset, concealed screwdriver adjustment, with
high limit stop, minimum range 70 degrees to 200 degrees F.
H. Duct smoke detectors shall be ionization type, suitable for mounting in the air stream.
I.
Control dampers shall be furnished by the controls manufacturer. Dampers shall be fabricated of
galvanized steel, with blades a maximum of 8" wide. Frame shall be minimum 13 gauge, and
blades shall be minimum 16 gauge or two formed sheets not lighter than 22 gauge. Blade seals
may be elastomeric or stainless steel. Bearings shall be nylon or sintered metal. Blade linkage
shall be of corrosion resistant steel and shall be out of the air stream. Throttling dampers shall be
of the opposed blade type. Two-position dampers shall be of the parallel blade type. Shut-off
damper shall have a maximum leakage of 1/2% at 4" W.G. Dampers shall be Ruskin CD36 or
equal by Greenheck, Louvers & Dampers, Inc., or United Air.
J. Hydraulic type damper actuators, which require an operating torque of less than 26 lb. - in, shall be
compact spring return power units hermetically sealed in an oil filled case. The actuator shall
include a transducer assembly for two-position operation.
K. Control panels shall be single or double door as required and be constructed of 18-gauge steel
with painted finish, piano hinges and key locking latches (key all panels the same). Internal wiring
CONTROLS
15900- 1
shall be terminated in screw-type, connector-insulated, terminal strip. All wiring shall be neatly
bundled and secured. Wiring to components on doors shall be wrapped with "Hili-Tube" spiral
wrap and shall be of the adequate length to permit full opening of doors. Control wiring shall be
protected with fuses or circuit breakers. All systems switches and temperature gauges shall be
mounted on control panel face. Instruments in panels shall be permanently labeled which shall
agree with labeling on the control diagram. Provide engraved plastic nameplates for all items on
panel face. Mark all other instruments with indelible ink. Label panel face: LCP-1 (Local control
panel) for RTU-1, etc.
3.0 - EXECUTION
A. Install control devices as required to make a complete, working system and to accomplish the
Sequence of Operation below.
B. All low voltage control wiring shall be plenum rated cable, installed in accordance with the
requirements of NEC and Division 16. Provide metallic conduit from wall-mounted devices,
concealed inside the walls up to the space above the ceiling. Low voltage control wiring concealed
above the ceiling or in attic spaces may be run without conduit. All exposed control wiring shall be
run in metallic conduit.
C. Thermostats shall be mounted level and plumb, with no gaps between the base and wall.
D. All controls shall be field-tested and field calibrated.
E. Provide return duct smoke detectors where shown on the drawings.
F. Sequence of Operation:
1.
Packaged Rooftop Units shall each be controlled by an electronic heating and cooling sevenday programmable room thermostat. During the “occupied” mode, the corresponding O.A.
motorized damper shall open to the minimum set position and the unit supply fan shall run
continuously. During the “unoccupied” mode, the O.A. damper shall remain closed and the
supply fan shall cycle based upon a call for heating or cooling. The supply fan shall be deenergized upon activation of the firestat and/or one of the duct smoke detectors in the
corresponding duct system.
Upon a call for heating, the supply fan shall start and the unit’s heating cycle shall be
activated.
Upon a call for cooling, the supply fan shall start, and the unit’s cooling system shall be
activated. The unit shall operate to cool the supply air within acceptable limits until the space
temperature is satisfied. A cooling coil freezestat shall de-energize the compressor(s) if the
coil leaving air temperature falls below setpoint (40 deg. F).
New Car Delivery unit shall utilize room carbon monoxide (CO) sensor with digital displays.
When the CO level rises above setpoint, the RTU serving that space shall switch to the higher
outside air setpoint position. Roof Exhaust Fan EF-1 shall activate and the RTU shall supply
the higher O.A. rate until CO level drops below setpoint (minimum 5 minute runtime).
2.
Ductless Split Systems (Outside Heat Pumps and Ceiling Mounted Cassettes) shall each be
controlled by an electronic heating and cooling seven-day programmable room thermostat.
During the “occupied” mode, the unit supply fan shall run continuously. The supply fan shall
be de-energized upon activation of the firestat.
Upon a call for heating, the unit’s heating cycle shall be activated. Upon a call for cooling, the
unit’s cooling system shall be activated
CONTROLS
15900- 2
3.
Toilet Exhaust Fans shall each be controlled by the corresponding motion sensor(s). Upon
activation, the fan shall run for a 30 minute time period (adjustable). Fans serving multiple
rooms shall have a motion sensor in each room and shall activate the fan if motion is sensed
in either space.
END OF SECTION 15900
CONTROLS
15900- 3
SECTION 15950 – TEST AND BALANCE
1.0 - GENERAL
1.1 SUMMARY
A. Mechanical General Provisions applies to this Section.
2.0 - PRODUCTS
2.1 MATERIALS
A. Provide materials, supplies, instruments, and gauges necessary for the testing specified herein.
3.0 - EXECUTION
3.1 INSTALLATION
A. Test and balance work shall be by an independent test and balance agency. Agency shall have
been regularly engaged in this type work for a minimum period of one year, shall employ a full time
registered engineer to supervise the work and shall be a member of AABC or NEBB. Agency
selected shall be subject to approval by the Architect. Submit following information for review
within 30 days of award of contract.
1. Name, address, and phone number of test and balance agency.
2. Date test and balance agency started in business, and list of at least 3 projects of similar size
and scope completed to date. List shall include name, address, and phone numbers of
persons familiar with the work representing both the owner and the mechanical contractor.
3. Name, registration number, and resume of experience of the registered engineer to be
assigned to this project.
4. List of instruments to be used, including dates of latest calibration (shall be in accordance
with AABC or NEBB procedural standards.
5. Copy of reporting forms to be used for this project, indicating scope of work.
6. Copy of AABC or NEBB membership certificate.
B. Within 30 days after test and balance agency has been accepted by the Architect, test and
balance agency shall submit the following information:
1. Copy of pre-bid checklist, with notations to mechanical contractor of any additional balancing
valves, dampers, gauges, or other items of equipment required for test and balance work,
whether indicated in the plans and specifications or not. This checklist shall be submitted to
the mechanical contractor prior to bidding.
2. Items indicated in this checklist shall be provided by the mechanical contractor at no
additional charge. Items ultimately determined to be required for test and balance work, but
not called for in the plans and specifications or indicated in the pre-bid checklist shall be
provided by the test and balance agency at no additional charge.
C. Changes of pulleys, belts, impellers, and other equipment components shall be by the mechanical
contractor.
TEST AND BALANCE
15950- 1
D. Complete schedule of test and balance work, indicating each device to be tested or balanced, the
methods to be used to obtain the data, the instruments to be used, and the design values.
E. Test and Balance Agency shall visit the project prior to starting tests and balance work and shall
inspect all systems to determine that they are ready for T & B work to commence. A written report
shall be made to the contractor, indicating corrective or additional work required, with a copy to the
Architect/Engineer.
F. Actual test and balance work shall not commence until all related systems are in full operation.
The mechanical contractor shall operate the systems continuously during this period, providing
operation in each mode as required for proper test and balance. Test and balance work shall be
performed in accordance with AABC National Standards for Field Measurement and
Instrumentation and/or NEBB Procedural Standard for Testing, Balancing and Adjusting.
G. The Certified Test Report shall be submitted at least two weeks prior to final inspection. Final
inspection (and therefore final payment) will not be made until the test and balance report has
been reviewed by the Architect.
H. Insofar as possible, the systems shall be adjusted for maximum efficiency at the design criteria.
Test and balance agency shall analyze areas where systems cannot be balanced to criteria;
where, even though balanced to criteria, the desired results are not obtained; and where
excessive noise and vibration occurs; and shall make written recommendations for corrective
action.
I.
Test and balance agency shall provide a warranty against defects in workmanship for a period of
one year from dates of acceptance. During the warranty period, if the Architect/Engineer has
reason to believe the test and balance work was not performed properly, the test and balance
agency shall re-test 15% of the test points, as randomly selected by the Architect/Engineer. If
more than 10% of the test points are out of range, the entire system shall be rebalanced. This
provision becomes null and void if there is sufficient evidence that operating personnel have
tampered with the settings. In addition to the above, test and balance agency shall visit the project
3 months and 12 months after final inspection. During this visit, the agency shall check any
problem areas and correct. Agency shall make a casual inspection of the entire system and shall
consult with operating personnel. Agency shall make a written report, outlining any construction,
operating, and maintenance deficiencies noted, and shall submit the report to the
Architect/Engineer.
J. DUCTWORK
1. Low velocity ductwork shall be tested for air tightness. Ductwork shall be considered to be
airtight where there are no audible air leaks and where leaks cannot be detected by sensing
the air velocity on the back of the hand. If there is reason to believe that duct leakage, at 2"
wg static pressure, exceeds 10% of rated airflow, a measured air leakage test may be
required. Detectable air leaks shall be repaired in an approved manner.
2. Air flow at each outlet and inlet and in any designated section of ductwork shall be adjusted
to within 10% of the design CFM, and recorded on the report. Direct air flow from sidewall
registers and drum louvers for proper air distribution.
3. System static pressures shall be measured and recorded on the inlet and discharge of each
ducted fan, on each side of filter assemblies, on each side of coils, and as noted on the
drawings.
4. System wet bulb and dry bulb temperatures shall be measured for outside air, return air,
mixed air, supply air, room air, and as noted on the drawings.
K. EQUIPMENT
1. Measure and record rpm of rotating equipment.
2. Measure and record voltage and amperage of electrical equipment.
TEST AND BALANCE
15950- 2
3.
Measure and record suction and discharge pressures of compressors, pumps and similar
devices.
L. CONTROLS
1. In coordination with the Controls subcontractor, adjust controls to the specified and or
required setpoints. Record all set points and indicate ranges.
2. Verify and document proper operation of CO sensors, exhaust fan economizers and enthalpy
economizers.
3. Verify programmable thermostats have been programmed per the Owner’s
occupied/unoccupied schedules.
END OF SECTION 15950
TEST AND BALANCE
15950- 3
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