HomeMy WebLinkAboutPM5BASIC MECHANICAL MATERIALS AND METHODS
1.9 Split Systems.
12.
ARI Standards. Condensing units shall have minimum efficiency ratio (SEER) as
shown on drawings. Units shall be as scheduled on drawings.
1.11 Sheetmetal Ductwork
(A) HVAC systems supply, return and exhaust rectangular and round ductwork shall be constructed in
accordance with the latest SMACNA edition "Low Pressure Duct Construction Stnadards". All
ductwork to be shop fabricated from galvanized sheetmetal complying with ANSI/ASTM A527, or
liquid based duct sealant.
(B) Type of joint connections, bracing, construction, etc., shall be in accordance with the latest edition of
the SMACNA and ASHRAE Guide. Ducts shall be substantially air tight; less than 5% leakage.
(C) When required by local codes, round duct shall be constructed of galvanized steel, 26 gauge for up to
12" diameter, and 24 gauge for 12" to 18" diameter.
1.12 Flexible Ductwork (only used where concealed)
(A) Insulated low pressure flexible duct shall be a factory fabricated assembly consisting of a zinc-coated
spring steel helix, non-perforated plastic inner liner, wrapped with a fiberglass insulation. The
assembly shall be sheathed in a vapor barrier jacket, factory sealed at both ends of each section. The
composite assembly, including insulation and vapor barrier shall meet the Class 1 requirements of
NFPA Bulletin No. 90A, and be UL labeled. The "R" valve measured @ 75 F shall be 5.5 or greater
per ASTM C177-71.
(B) Flexible duct shall be Certainteed, "Certaflex" 25, as manufactured by the Certainteed Corp., P.O. Box
860, Valley Forge, PA, 19482 or ATCO 70 Series as manufactured by ATCO Rubber Products, Inc.,
4920 Mark IV Parkway, Ft. Worth, Texas, 76106.
(C) Install flexible duct in a fully extended condition free of sags and kinks, using only the minimum length
required to make the connection. Where horizontal support is required, flexible duct shall be
suspended on 36" centers with a minimum 3/4" wide flat banding materials. All joints and connections
shall be made with 1" wide positive locking steel straps. Flexible duct shall be 3'-0" long. (Maximum)
1.13. Insulation - Duct
(A) Insulation shall be Johns-Manville, Owens-Corning or equal, applied by Contractor or manufacturer's
representative regularly engaged in the application of insulation. Install in accordance with
manufacturer's recommendations.
(B) All insulation materials, coatings and other accessories shall have a fire hazard rating not to exceed 25
for flame spread, 50 for fuel contribution and 50 for smoke developed, materials shall not produce
flaming droplets when subjected to fire. All products, or their cartons, shall bear a label indicating
conformance to the above requirements.
(C) Rectangular duct shall be externally insulated with 1-1/2" thick blanket. Round duct (if required)
shall be externally insulated with 1" thick flexible blanket with an integral vapor barrier.
1.14 Insulation - Piping
(A) Insulate piping with Armaflex AP elastomeric tubing insulation, astmc534 type 1 with flame spread less
than 25 and smoke development less than 50. insulation thickness shall be 3/4". install in accordance
with manufacturer's instructions and coat insulation outdoors with 2 coats of manufacturer's
recommended coating.
(B) All wall penetrations are to be sleeved and caulked weather and water tight.
1.15 Piping material
A. Refrigerant lines shall be type "L" hard copper pipe. Type "L" hard copper shall be soldered, soldered end
fittings, soldered or screwed valves and specialties.
1.16 Calibration Test and Balancing
(A) A completely installed, operating and balanced system and report shall be provided to the
ENGINEER prior for final acceptance.
(B) Contractor to do and record the following, but not limited to:
- Set HVAC units to RPM and amp draws listed on setup sheet.
- Check and set HVAC evaporator fans for proper rotation.
- Connect and set motor operating outside air controllers and dampers to the settings listed on setup
sheet.
- Connect HVAC transformers to proper voltage taps.
- Wire and checkout night setback system for proper operation.
- Install thermostats and check for proper operation.
- Install and check all diffusers for proper locations and throw pattern.
- Verify that the HVAC outside air damper controllers are properly interlocked with the furnaces and
thermostats.
- Verify that each supply run has its dampers open and locked.
- Verify that each fan has the proper voltage present at the motor.
- Balance hvac units and diffuser/grilles to proper air flow and pressure as required.
- Provide to the engineer a written report of testing and balancing.
(I) Electrical Contractor shall provide required disconnect
switches, install and wire complete to connections in the
units.
(H) Provide overflow drain pan under cooling coil of adequate size to catch all coil
condensate. Pan shall be zinc coated steel with heavy coat of insulating sealer.
Provide pan with drain line connection and galvanized threaded trap. See
detail sheet.
(G) Supply air fan shall be variable speed. Fan shall be statically and dynamically
balanced at factory. Fan shall not pass through first critical speed at cataloged
RPMs. Magnetic contactors for fan motor shall be located in unit control panel.
Provide controls to prove fan operation before heating or cooling can be
energized. These controls shall also shut off heating or cooling in event of low
air flow.
(F) Evaporator coils shall consist of copper tubing with aluminum fins mechanically
bonded to tubes. Coils shall be provided with liquid line dryer and sight glass.
(E) Condenser fans shall be propeller type. Fan motors shal have thermal and
over-current protection.
(D) Condenser coil shall consist of non-ferrous tubing with mechanically
bonded aluminum fins.
(C) Compressors shall be of the hermetic type and shall be complete with internal
thermal and overload protection in each leg, crankcase heaters and service
valves. Safty controls shall consist of low pressure cutout, high pressure
cutout, high pressure cutout and high pressure relief. Magnetic contactors
for compressor motors shall be located in unit control panel. Provide
standard 5 year parts and 1 year labor warranty.
(B) Unit enclosures shall be painted-steel with factory applied corrosion and weather
resistant finish. Provide gasketed removable panels or access doors for access to
all internal parts. All joints shall be air and water tight. Enclosure shall be
insulated in all area of contact with conditioned or return air streams.
(A) Heating and cooling units shall be from the same manufacturer and shall conform
to:
All work shall be installed so as to be readily accessible for operating, servicing,
maintaining and repairing. hangers shall include all miscellaneous steel such as
channels, rods, etc., necessary for the installation of work and shall be fastened to
building structure, but not piping or ductwork. all piping shall be concealed
wherever possible. exposed pipes shall be in straight lines parallel with or at right
angles to building lines.
5. Use extreme care in the installation of equipment to insure that noise and vibration
are held to absolute minimum. Correct objectionable noise and vibration.
Provide vibration eliminators required for proper results.
6. Cost for fees, permits, tests and inspections related to the Mechanical work shall be
paid for by the Mechanical contractor.
7. Make known arrangement of work and check arrangement and location of other
trades to avoid conflicts. Examine drawings of other trades to determine exact
equipment locations for rough in.
8. Mechanical Contractor shall provide to Owner all operation and maintenance
manuals. Contractor shall instruct Owner in operation of all equipment.
9. Notify Owner representative 24 hours in advance when piping or equipment is to
be tested before piping is insulated or concealed. Failing to comply, Contractor
shall uncover and retest lines, repairing damage to other Contractor's work, as
well as his own.
10. Before requesting final payment, inspect installation to assure that work is
complete.
11. The Mechanical Contractor shall do cutting and patching required for installation
of work. Do no more cutting than necessary. Cutting of structural members
will not be permitted unless instucted by structural engineer of record.
Part 1 - General
1.1 Contractor shall provide labor, materials, tools, and services for a complete installation of
equipment and system contained, shown, indicated, and specified in the Contract Documents.
Work included:
1. Heating, ventilating and air conditioning systems, controls and mechanical system insulation.
2. Preparation for testing and balance of mechanical systems and correcting deficiencies.
3. Preparation and submittal of shop drawings and product data. Provide:
a. Equipment. b. Insulation. c. Refrigerant piping.
4. Maintaining a record set of blueline prints and marking them to indicate location of concealed
items, and deviations made to suit conditions and production of mechanical as-built drawings.
1.2 Job Conditions
A. Submittal of bid implies bidder has read applicable paragraphs of the specifications and will be
bound by their conditions.
1.3 Local Conditions
A. Conform with local conditions. Coordinate with local utilities on size of utility services.
1.4 Intent
A. The contract documents (drawings and specifications) describe the mechanical work of this
project. Any item mentioned in one part shall be as binding as though mentioned in both.
B. The contract documents form a guide for a complete mechanical installation. Where an item is
reasonably necessary but not specifically mentioned, such as duct hangers or transitions, piping
offsets, drawings, etc., for a complete system, provide same.
C. Mechanical layouts indicated on drawings are diagrammatic only. Exact locations of ducts,
pipes, and equipiment shall be governed by the drawings of related trades.
D. Manufacturers listed on the drawings were used as the basis of design. the contractor may, at
their option, provide an equal manufactured product. the contractor is entirely responsible
for any and all costs required to alter the system design, whether identified or not identified by
the engineer or architect, should an equal manufacturer be supplied.
1.5 Deviations
A. No deviations from specifications and drawings shall be made without full knowledge and
written consent of Engineer.
B. Should Contractor find, during progress of work, conditions which dictate a modification of any
particular requirements, report such item promptly for decision or instructions.
1.6 Quality Assurance
A. Comply with applicable local, state and federal codes.
B. Comply with applicable requirements of recognized industry associations which promulgate
standards for the various trades.
C. Employ only qualified journeymen for this work. Employ competent, qualified mechanics to
supervise the work
1.7 Codes and Standards
A. Perform work specified in this Division in accordance with the applicable codes and standards
listed below, and such standards that may be specified in other sections. When these
specifications are more stringent, they shall take precedence. In case of conflict, obtain a decision
from the Engineer.
1. NFPA 54: National Fuel And Gas Code.
2. NFPA 90A: Air Conditioning and Ventilation Systems.
3. NFPA 101: Life Safety Code
4. Indiana State or City Building Code.
5. Indiana State Mechanical Code.
6. Indiana Plumbing Code.
7. Handicapped Code ANSIA117.1 and ADA
8. Applicable State Energy Code.
9. AGA: American Gas Association.
10. ANSI: American National Standards Institute.
11. ARI: American Refrigeration Institute.
12. ASHRAE: American Society of Heating, Refrigeration and ARI Conditioning Engineers.
13. ASME: American Society for Mechanical Engineers.
14. ASTM: American Society for Testing and Materials.
15. MSS: Manufacturer's Standardization Society of the valve and fitting Industry.
16. NEMA: National Electrical Manufacturer's Association.
17. NFPA: National Fire Protection Association.
18. SMACNA: Sheet Metal and Air Conditioning Contractor's National Association.
19. UL: Underwriters' Laboratories, Inc.
1.8 Mechanical Notes and Conditions
1. Work included under this project consists of providing everything required to construct and
install a complete and proper operating mechanical systems as specified, indicated, and
elsewhere required.
2. Materials shall bear Underwriter's Label where such standards have been established and listed
by Underwriter's Laboratories, Inc. materials, equipment and appliances shall conform to latest
industry standards.
3. Notify of and coordinate with owner on equipment shut down, removal, work times, etc...
1.10 Sequence of Operation.
THE PLANS, IDEAS & DESIGNS REPRESENTED
HERE ARE THE EXCLUSIVE INTELLECTUAL
PROPERTY OF APRIL MCCLURG DESIGN CO.
ALL RIGHTS RESERVED, EXCEPT WHEN WRITTEN
CONSENT IS GIVEN.
CONTRACTORS ARE TO VERIFY AND ARE
RESPONSIBLE FOR ALL JOB SITE DIMENSIONS.UNIT 130- DIVIDEWEST CARMEL 'B' SHOPPES9873 NORTH MICHIGAN ROADCARMEL, INDIANA 46032Mechanical, Electrical, &
Energy Engineering
2707 Rand Road Indianapolis, In 46241
voice: 317-464-9090 fax: 317-464-9393
www.daengineering.com
DESIGN-AIRE ENGINEERING, INCSOUTH BUILDINGISSUE: SUBMITTAL SET
DATE: 11/18/2021
PM-5
HVAC
SPECIFICATIONS
01/03/22