HomeMy WebLinkAboutB17-0015_M4.0_1489608840.pdfMechanical Specifications
General
1. Immediately notify the Engineer of any discrepancies.
2. It shall be assumed that all subcontractors are experienced and thoroughly knowledgeable in their respective areas of the construction
industry and shall perform in a responsible manner in an appropriate construction sequence.
3. Do not scale drawings. Verify dimensions in field prior to commencement of work.
4. It is the intent of these drawings and specifications to establish a standard of quality. The Engineer reserves the right to take exceptions
to approve methods and materials not reflected herein.
5. Failure to order, or release order, for materials and/or equipment will not be accepted as a reason to substitute alternate materials,
equipment, or installation methods.
6. Work shall be performed in a workmanlike manner to the satisfaction of the Architect & the Engineer.
7. Labor, materials, and equipment shall conform to the latest applicable editions of local, State of Colorado, and National Codes and
ordinances. If conflict between those publications exists, the most stringent requirement shall apply.
8. Provide record drawings to architect. Drawings shall include all addendum items, change orders, alterations, re-routings, etc.
9. The drawings show the intent of the mechanical systems but do not show all details required. It is the responsibility of the Contractors
to install complete & operable systems, which conform to the manufacturers' installations instructions & industry standards.
10. Systems shall be tested for proper operation. If tests show work is defective, Contractor shall make corrections necessary at no cost to
Owner.
11. It is the Contractors' and manufacturers' responsibility to assure themselves that the code authorities will approve any product to be
installed on the project.
12. Systems shall be professionally labeled. Piping shall be labeled with color coded commercial grade labels indicating piping service and
flow direction. Equipment, fans, pumps, valves, switches and controls shall be labeled with engraved plastic or metal tags and an
equipment/valve schedule shall be provided and mounted on the mechanical room wall. Equipment labels shall follow the same
nomenclature as the mechanical drawings.
13. Mechanical Contractor to make final connections to kitchen equipment.
14. See architectural reflected ceiling plan for all ceiling penetrations.
15. Coordinate architectural, structural, electrical, landscaping, fire protection, and interior design drawings with mechanical drawings prior
to installation.
16. Offset piping, ductwork, etc. as necessary to accommodate structure, beams, columns, and existing equipment.
17. Verify exact locations of existing and new underground utilities, piping, and raceway systems prior to trenching. Contractor shall
obtain and verify exact utility company drawings and requirements.
Electrical
18. Contractor must carefully verify electrical service voltage and phase available before ordering any equipment.
19. The following are to be furnished by MC and wired by EC : equipment motors, magnetic starters, line voltage thermostats, factory
disconnect switches (if specified as part of factory wired equipment) resistance heaters, fire and smoke detectors.
20. The following are to be furnished and wired by EC: disconnect switches, thermal overload switches, manual operating switches and
contactors.
21. The following are to be furnished and wired by MC: low voltage thermostats, control transformers, control relays, control panels,
motorized valves, motorized dampers, pilot lights, multi-speed switches and interlocks.
Shop Drawings
22. Submit entire HVAC and plumbing and fire protection shop drawing submittal data at one time. Submittal to be bound in three-ring
binders, indexed in a neat and orderly manner. Partial submittals will not be accepted. Submittals shall include, but not be limited to:
equipment, fixtures, insulation, diffusers, pumps, fans, piping, valves, boilers, furnaces, and fire protection.
23. Provide with shop drawing submittal, 1/4" scale layout drawings of rooms with mechanical equipment, piping and ductwork. Layouts
shall show locations of mechanical systems and shall be coordinated with plumbing, fire protection, and electrical systems. Equipment
shall be drawn to scale.
Remodel, Demolition & Unforeseen Conditions
24. Visit site prior to bid and verify the conditions. Include in the bid, costs required to make work meet existing conditions, whether
indicated or not.
25. Provide mechanical demolition required. Refer to architectural demolition drawings for location and extent of demolition required.
Visit site prior to bid to determine extent of work involved. Provide labor and materials as required to maintain and/or restore
continuity of service to existing systems.
26. In as much as design for remodel, renovation and/or rehabilitation requires that certain assumptions be made regarding existing
conditions and because some of these assumptions cannot be verified without destroying otherwise adequate or serviceable portions of
the building, the Engineer cannot assure the Owner or the Contractor that the professional consulting services herein encompass all
contingencies. Field coordination during construction is imperative. Contractors bidding this work must make reasonable allowances
for unseen conditions and should include associated allowances in their bids noted as such.
27. Be responsible to field verify existing equipment or ductwork remaining to be reconnected to new or existing systems. Provide
ductwork, piping, controls, diffusers, etc., as required to restore continuity to system(s).
28. All ductwork, diffusers, and equipment shown on this plan are new, except where noted.
29. All new ductwork, piping, equipment, etc. is shown with dark lineweight. All existing ductwork, piping, equipment, etc. is shown with
light lineweight.
30. All removed piping, ductwork, equipment, etc. are to be disposed of by Contractor unless noted otherwise.
31. All existing support rods and straps now supporting ducts, pipes, air tubing, electrical conduit, etc. that are removed to allow room for
installation of new equipment shall be relocated and reinstalled, or replaced if damaged.
32. Cap all demolished and abandoned duct take-offs at trunk duct.
33. Extend and modify existing fire protection systems to new and remodeled areas.
34. New hot and cold water branches to be routed from nearest hot water and cold water of line size equal to or greater than new branch -
typical.
Insulation
35. Piping Insulation Schedule:
Service Thickness (in.)
Domestic Hot Water 1.0
Domestic Cold Water 0.5
Condensate Drain 0.0
Piping insulation shall be U.L. approved, white, all service, glass fiber, snap-on, pipe insulation. Insulate fittings with glass fiber
blanket insulation and premolded PVC covers. Provide submittal.
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clean sand.
36. Elastomeric insulation: Slip insulation over pipe before assembly so that there are no length wide seams. Where lengths of insulation
are butted together, use factory recommended adhesive. Glue the butt ends of insulation to each other to form a homogenous membrane
maintaining the vapor barrier. Exterior elastomeric insulation shall be installed with the longitudinal seam on the bottom of the pipe and
shall be protected with an ultra violet resistive paint. Elastomeric insulation shall be covered with two coats of paint manufactured
specifically for covering Elastomeric insulation, Armaflex WB Finish or equal.
37. Insulation for all types of piping shall be carried full size through pipe hangers or pipes shall be supported with vibration clamps.
38. Internally line all new ductwork inside the thermal envelope (unless noted otherwise) with 1/2" thick, 2.0 PCF, U.L. rated, glass fiber
insulation with a continuous vapor barrier.
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barrier. Minimum R-Value of 6.0.
Piping
41. Domestic Hot & Cold Water piping inside building - Buried lines type 'K' copper water tube, wrought copper fittings and 1100F solder.
Non-buried lines, type 'L' copper water tube, wrought copper fittings and no lead solder. Provide alternate pricing for PEX tubing (no
oxygen diffusion barrier necessary).
42. Waste lines above ground - Standard weight, C.I. soil pipe, and fittings, or hubless, C.I. soil pipe and fittings. Up through 2-1/2" may
be standard weight, galvanized steel pipe with black, C.I. drainage fittings.
43. Waste and vent lines may also be Schedule 40 ABS-DWV plastic pipe and fittings (ASTM D2661) or Schedule 40 PVC-DWV plastic
pipe and fittings (ASTM D2665). All pipe and fittings shall bear NFS-DWV mark and shall be joined with solvent weld joints as
recommended by the manufacturer.
44. PEX piping shall be supported by continuous cradles supplied by the manufacturer.
45. Drain Pan piping - Not Buried: Type 'M' copper, wrought copper fittings, and no lead solder. - Buried: Type 'L' copper, wrought
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Schedule 40 ABS-DWV plastic pipe and fittings (ASTM D2661) or Schedule 40 PVC-DWV plastic pipe and fittings (ASTM D2665).
46. Condensing Water Heater Condensate shall be neutralized via a neutralization tube before discharge into building drainage system.
Condensate piping shall be PVC or other approved material suitable for pH levels of 3.
47. Refrigeration Piping - Type 'L', ACR Grade copper, cleaned, dehydrated, capped and charged with clean nitrogen at the factory. Use
wrought copper fittings and hard solder having a minimum melting point of 1100F for buried lines, no lead solder for non-buried lines.
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sand.
48. Gas Piping - Schedule 40 black steel pipe, 150 lb. malleable iron screwed fittings on above ground pipe, welded fittings with all piping
coated and wrapped on buried pipe. Welded gas piping shall be pressure tested at a minimum of 60 psi per Town of Vail amendment to
the 2015 IFGC, section 406.4.1. CSST pipe is permitted for final connections only.
49. For commercial kitchen gas appliances, use "Safe-T-Link" gas connector kits with stainless steel braid and extruded coating, quick
disconnect, ball valve and restraining cable per code, for all connections to under the hood that are moveable (wheels).
50. Gas Valves - Lubricated plug valve 175 lb. W.O.G. iron screwed or flanged.
51. Copper pipe Valves and Specialties:
Gate Valves: Bronze, Class 125, 200 lb. W.O.G.
Ball Valves: Bronze, Class 125, 200 lb. W.O.G.
Check Valves: Bronze, Class 125, 200 lb. W.O.G.
Balancing Valves: 125 psig w.p. for 250F service tight shut-off, Illinois dual-purpose, balancing/shut-off valve, Hoffman, Sarco, or
equivalent.
52. Refer to Fixture Connection Schedule for pipe sizes to individual fixtures.
53. Support pipe with rod and clevis or clamps. No pipe tape allowed.
54. Dielectric Unions - Furnish and install a dielectric union at all connections where non-ferrous material is in contact with ferrous
material and fluid is not protected with corrosion inhibitors.
55. Install plumbing clean-outs as required by applicable codes.
56. Fire caulk all penetrations of fire-rated assemblies with 3M or Hilti fire sealant.
Water Heater Flue & Combustion Air Piping
57. Water Heater flue piping shall be CPVC or PVC, complying with manufacturer's installation instructions.
58. Water Heater combustion air piping shall be PVC, complying with ASTM D1785.
Ductwork
59. Duct sizes shown on drawings are outside (sheet metal) duct dimensions.
60. All ductwork shall be sealed airtight with duct mastic. Duct tape, where used, shall be UL 181 listed foil-backed type.
61. Provide 1/4" galvanized mesh screen on all combustion air ducts or openings.
62. Seal all ductwork joints and vapor barrier penetrations at all exterior walls.
63. Ducts and piping penetrating through roof shall have roof flashing with caulk type counter flashing sleeve or by method acceptable by
roofing manufacturer. Installation shall be watertight.
64. Provide backdraft dampers at any and all ductwork penetrations through exterior wall (except outside air and combustion air ductwork).
65. Provide turning vanes in all mitered rectangular elbows.
66. Provide volume dampers at all accessible round duct take-offs.
67. Make all final connections to supply GRD's with acoustic flexible duct. Minimum length shall be 3 feet. Maximum length shall be 6
feet.
68. All ductwork or surfaces which are visible behind a grille, register, diffuser or louver shall be painted flat black.
69. Sheet metal and fittings to be pursuant to SMACNA and ASHRAE standards.
70. All ducts shall be 26 gauge minimum. Duct gauge and construction shall conform to SMACNA HVAC Duct Construction Standards.
71. Contractor to coordinate exact location of grilles and registers before installation.
72. Seal off all ducts during construction.
Vibration Isolation
73. Where specified, duct-to-fan connections shall be made with flexible canvas duct connector material. Provide duct alignment within
1/2" at the fan collar and duct collar.
74. Where specified, spring vibration isolators for support of equipment shall be properly aligned so that support rod does not contact
spring housing.
Type I Grease Exhaust Ductwork
85. ROUND DUCTWORK: Furnish double wall, factory built grease duct for use with Type I kitchen hoods, which conforms to the
requirements of NFPA-96. Products shall be ETL listed to UL-1978 and UL-2221 for venting air and grease vapors from commercial
cooking operation. Models DW-2R, 3R and 3Z are used for grease duct applications when installed in accordance with these
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Cooking Operations. Double wall grease ducts are listed for a continuous internal temperature of 500 degrees F and intermittent
temperatures of 2000 degrees F. The duct sections shall be constructed of an inner duct wall and an outer wall with insulation in
between. The inner duct wall shall be constructed of .036 inch thick, 430 type stainless steel and be available in diameters 8" through
24". The outer wall shall be constructed of stainless steel at a minimum of .024 inch thickness. The duct, based on model number, shall
include layers of Super Wool 607 Plus insulation between the inner and outer wall. Grease duct joints shall be held together by means
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clearance, according to classifications.
86. RECTANGULAR DUCTWORK: Grease duct serving Type I hoods shall be constructed of steel not less than 0.055 inch (No. 16
Gage) in thickness or stainless steel not less than 0.044 inch (No. 18 Gage) in thickness. Joints, seams and penetrations of grease ducts
shall be made with a continuous liquid-tight weld made on the external surface of the duct system. Internal welding or brazing shall be
ground smooth. Penetrations not welded such as access doors shall sealed by devices listed for the application. Duct joints shall be butt
joints or overlapping duct joints of either the telescoping or bell type. Overlapping joints shall be installed to prevent ledges and
obstructions from collecting grease or interfering with gravity drainage to the intended collection point. Grease duct shall be wrapped
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and ASTM E 2336. Wrap shall be installed in strict accordance with manufacturer's written instructions and shall be protected where
subject to physical damage. Clearance to combustibles for duct wrap is zero inches.
87. Type I grease exhaust ductwork shall slope not less than one-fourth unit vertical in 12 units horizontal toward the hood or toward an
approved grease reservoir.
88. Ducts exposed to the outside atmosphere or subject to a corrosive environment shall be protected against corrosion in an approved
manner.
89. Make up air ducts connecting to or within 18 inches of Type I hoods shall have insulation that is noncombustible or listed for the
application.
90. Duct-to-exhaust fan connection shall be flanged, gasketed, and bolted.
91. Grease duct bracing and supports shall be of noncombustible material securely attached to the structure and designed to carry gravity
loads within the stress limitations of the International Building Code. Bolts, screws, rivets and other mechanical fasteners shall not
penetrate duct walls.
92. Duct systems serving Type I hoods shall be constructed and installed so that grease cannot collect in any portion thereof, and the system
shall slope not less than one quarter inch per linear foot toward the hood.
93. Cleanouts shall be equipped with tight-fitting doors constructed of steel having a thickness greater than or equal to the duct. Doors shall
be equipped with a substantial method of latching, sufficient to hold the door tightly closed. Doors shall be designed so that they are
operable without the use of a tool. Door assemblies, including any frames and gasketing, shall be approved for the purpose, and shall
not have fasteners that penetrate the duct. Listed and labeled access door assemblies shall be installed in accordance with the terms of
the listing. A sign shall be provided on access opening panels with wording as follows: "ACCESS PANEL. DO NOT OBSTRUCT."
94. Contractor shall perform grease duct tests per 2015 IMC 506.3.2.5.
95. Contractor shall perform performance testing per 2015 IMC 507.6, in the presence of the Engineer and the Chief Building Official.
Type II Exhaust Ductwork
96. Ductwork serving Type II exhaust hoods (condensate hoods) shall be constructed of stainless steel or aluminum. All joints and seams
shall be sealed water tight and air tight with mastic. Ductwork system shall slope not less than one-fourth unit vertical in 12 units
horizontal toward the hood.
Controls
97. Mount all thermostats 4'-0" above finished floor.
98. All thermostats shall have a temperature range suitable for the application and have adjustable set points. The thermostats shall be able
to display temperature setpoint and room temperature. All thermostats shall be approved by the Owner.
99. See Sequence of Operation for additional control information.
Testing, Adjusting, & Balancing (TAB Contractor)
100. Air flows must be balanced, and fan belts and drive systems adjusted as required. Balance Contractor shall furnish subsequent air
balances after acceptance of the building.
101. Submit a written balance report. Balancing procedures shall be in accordance with NEBB or AABC guidelines for proportional
balance. Submit report on standard NEBB forms.
102. Airside measurements shall include all motor amperage, voltage readings, motor RPM, fan RPM, fan CFM, fan inlet static pressure, fan
outlet static pressure, and exhaust grille CFM. Also, include a differential static pressure measurements between the inside and outside
to verify space pressure is neutral to slightly positive. Utilize integral potentiometer at KEF-3 fan to balance airflow at KEH-3 hood,
and if needed, reduce airflow slightly to achieve neutral to slightly positive space pressure. Do not reduce airflow below 400 CFM.
103. Adjust flows to within 10% of required quantity. If actual quantity is less than 90% of design, investigate cause, attempt to rectify and
notify Engineer. Submittal of balance report with less than required flows without explanation is cause for rejection of report.
104. Submit three copies of all submittals in addition to any required by the Contractor. These copies shall be retained by the Owner,
Contractor and Engineer.
END OF SPECIFICATIONS.
1/11/17
03/15/17