HomeMy WebLinkAboutB17-0306_M400_1505923260.pdfGeneral
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 Owner, 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. Provide necessary trenching, backfill, excavation, supports, piping, insulation, saw cutting and patching,
FRQFUHWHSDYLQJ HWF DV UHTXLUHG %DFNILOO WUHQFKHV LQ ´ OD\HUV DQG WR FRPSDFWLRQ DQG SDWFK WR PDWFK H[LVWLQJ
grade.
13. Systems shall be professionally labeled. Piping shall be labeled with color coded commercial grade labels indicating
piping service and flow direction. Equipment, pumps and valves 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.
14. Mechanical Contractor to make final connections to kitchen equipment.
15. See architectural reflected ceiling plan for all ceiling penetrations.
16. Coordinate architectural, structural, electrical, and interior design drawings with mechanical drawings prior to
installation.
17. Offset piping, ductwork, etc. as necessary to accommodate structure, beams, columns, and existing equipment.
18. 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
19. Contractor must carefully verify electrical service voltage and phase available before ordering any equipment.
20. 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.
21. The following are to be furnished and wired by EC: disconnect switches, thermal overload switches, manual
operating switches and contactors.
22. 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
23. Submit HVAC and plumbing shop drawing submittal data. Submittal to be packaged and indexed in a neat and
orderly manner. Equipment tags shall be labeled and shall match the tags used in the drawings.
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. Field verify locations of all existing piping, equipment, ductwork, etc.
28. 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).
29. All ductwork, diffusers, and equipment shown on this plan are new, except where noted.
30. All new ductwork, piping, equipment, etc. is shown with dark lineweight. All existing ductwork, piping, equipment,
etc. is shown with light lineweight.
31. All removed piping, ductwork, equipment, etc. are to be disposed of by Contractor unless noted otherwise.
32. Pipes, ductwork, equipment, etc. to be removed, are shown hatched.
33. Cap all demolished and abandoned duct take-offs at trunk duct.
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.
Piping Insulation & Duct Liner
35. Piping Insulation Schedule:
Service Thickness (in.)
+:65 OHVV WKDQ ´ SLSH 1.5
+:65 ´ SLSH DQG JUHDWHU 2.0
Domestic Hot Water 1.0
Domestic Cold Water 0.5
Domestic Hot Water Recirculation 1.0
Refrigerant (1" pipe and less) 0.5
Refrigerant (1-1/8" pipe and greater) 0.75
Condensate Drain 0.0
Exposed Waste Piping (parking garage) 1.0
All piping insulation shall be U.L. approved, white, all service, glass fiber, snap-on, pipe insulation. Insulate fittings
with glass fiber blanket insulation and pre-molded PVC covers. Provide submittal. Refer to "Piping" section below
for refrigerant piping/insulation requirements.
36. Insulation for all types of piping shall be carried full size through pipe hangers or pipes shall be supported with
vibration clamps.
37. Duct Insulation Schedule:
Service Thickness (in.) Type Jacket
SA & RA Rectangular ducts 0.5 Liner n/a
OA Rectangular ducts 1.0 Liner n/a
EA Rectangular ducts 0.0 Unlined n/a
Round ducts 0.0 Unlined n/a
Duct Liner shall be 2.0 PCF, U.L. rated, glass fiber insulation with a continuous vapor barrier.
Duct Wrap shall have a continuous vapor barrier.
Piping
38. Waste & Vent Piping inside building - Cast Iron.
39. Heating Water & Domestic Water Piping - Type 'L' copper, wrought copper fittings, and no lead solder.
40. Refrigerant piping shall be provided, installed, tested, evacuated and charged, in accordance with the manufacturer's
recommendations, ANSI, ASHRAE, and ARI's Safety Code for Mechanical Refrigation, state & local codes. All of
the joints shall be brazed with a filler material that complies with AWS classification BCuP-5.
41. Refrigeration Piping - Type 'L', ACR Grade copper, cleaned, dehydrated, capped and charged with clean nitrogen at
WKH IDFWRU\ 8VH ZURXJKW FRSSHU ILWWLQJV DQG KDUG VROGHU KDYLQJ D PLQLPXP PHOWLQJ SRLQW RI ) IRU EXULHG OLQHV
no lead solder for non-buried lines. Valves and specialties shall be standard brass or bronze valves for refrigeration
VHUYLFH %XULHG SLSH VKDOO EH VXUURXQGHG E\ ´ FOHDQ VDQG
42. Condensate Drain Piping - Copper.
43. 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: Bronze, Class 125, 200 lb. W.O.G.
44. Maximum Piping Lengths (Feet) for Domestic Hot Water Run-out Piping:
(Per 2015 IECC Table C404.5.1)
Nominal Pipe Size Public Lav Faucets All Other Fixtures
1/4" 6 50
5/16" 4 50
3/8" 3 50
1/2" 2 43
5/8" 1 32
3/4" 0.5 21
7/8" 0.5 16
1" 0.5 13
1-1/4" 0.5 8
1-1/2" 0.5 6
2" or larger 0.5 4
45. Refer to Fixture Connection Schedule for pipe sizes to individual fixtures.
46. Support pipe with rod and clevis or clamps. No pipe tape allowed.
47. *UDGH DQG YDOYH DOO KHDWLQJ ZDWHU SLSLQJ ZLWK ô´ KRVH HQG YDOYHV WR SHUPLW GUDLQDJH RI WKH V\VWHP 9HQW DOO KLJK
points in equipment rooms as necessary with automatic air vents piped to convenient drain. All high points in system
outside of equipment rooms with manual air vents as required to relieve air in the system.
48. Seal annular space of all piping penetrations through fire-rated assemblies with approved fire caulk/ sealant (3M, Hilti
or approved equal).
49. Install plumbing clean-outs as required by applicable codes.
Antifreeze Solutions
50. DILUTION WATER QUALITY: Contractor shall be responsible for testing the water and submitting a report to the
Owner & Engineer, prior to system fill. "Hard" water shall not be used. The water used to dilute the concentrated
inhibited glycol-based heat transfer fluid must be either distilled, deionized, or contain less than 25 ppm of chloride,
25 ppm of sulfate, 50 ppm of calcium, and 50 ppm of magnesium, with a total hardness not to exceed 100 ppm. If
good quality water is unavailable, the manufacturer of the glycol product will provide the heat transfer fluid and water
to meet the specifications of the system.
51.
)LOO KHDWLQJ ZDWHU V\VWHP ZLWK SURS\OHQH JO\FRO ZDWHU VROXWLRQ E\ YROXPH IRU IUHH]H SURWHFWLRQ WR )
DQG EXUVW SURWHFWLRQ WR ) ,QFOXGH FRUURVLRQ LQKLELWRUV
Ductwork
52. Duct sizes shown on drawings are outside (sheet metal) duct dimensions.
53. All ductwork shall be sealed airtight with duct mastic. Where duct tape is used, it shall be listed and labeled in
accordance with UL 181.
54. Duct Pressure Class & Duct Seal Class Schedule:
Service Pressure Class Seal Class
SA & RA Rectangular ducts 2" wc C
OA Rectangular ducts 1" wc C
EA Rectangular ducts 1" wc C
Round ducts 1" wc C
55. Provide 1/4" galvanized mesh screen on Open End Ducts (OED).
56. Seal all ductwork joints and vapor barrier penetrations at all exterior walls.
57. Provide turning vanes in all mitered rectangular elbows.
58. Provide manual volume dampers for air balancing, at ALL round duct take-offs.
59. Make all final connections to supply GRD's located in lay-in ceilings with acoustic flexible duct. Minimum length
shall be 3 feet. Maximum length shall be 6 feet.
60. All ductwork or surfaces which are visible behind a grille, register, diffuser or louver shall be painted flat black.
61. Sheet metal and fittings to be pursuant to SMACNA and ASHRAE standards.
62. All ducts shall be 26 gauge minimum. Duct gauge and construction shall conform to SMACNA HVAC Duct
Construction Standards.
63. Contractor to coordinate exact location of grilles and registers before installation.
64. Seal off all ducts during construction.
Vibration Isolation
65. 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.
66. Where specified, spring vibration isolators for support of equipment shall be properly aligned so that support rod does
not contact spring housing.
Controls
67. Refer to Sequence of Operation M001 for primary control information.
68. Mount all thermostats 4'-0" above finished floor.
69. Freeze Detection Thermostats. Each supply system with water coils taking outside air shall have a freeze detection
thermostat located on the downstream side of the coil.
Testing, Adjusting & Balancing
70. Air and water flows must be balanced, and fan belts, pumps, and drive systems adjusted as required. Balance
Contractor shall furnish subsequent air balances after acceptance of the building.
71. 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.
72. Airside measurements shall include all motor amperage, voltage readings, motor RPM, fan RPM, fan CFM, fan inlet
static pressure, fan outlet static pressure, and grille, register & diffuser CFM. Also, include measurement & balancing
at all VBD ventilation balancing dampers.
73. Hydronic measurements shall include all motor amperage, voltage readings, motor RPM, pump RPM, pump GPM as
calculated from the pump curve, circuit setter GPM, inlet and outlet pressures at pumps, and temperature and PD drop
at all coils.
74. 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.
75. 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.
Project Close-out
76. Provide new clean air filters in all air handling equipment prior to system acceptance.
77. Clean all equipment, ducting, piping, etc. of dust and debris from construction.
78. Clean all water-side strainers and filtration equipment prior to system acceptance.
79. Furnish HVAC as-built / record drawings within 90 days of system acceptance.
80. Furnish O&M manuals for mechanical systems within 90 days of system acceptance.
81. Provide Owner training of equipment operation & maintenance, including a detailed project walk through of the
mechanical systems
END OF MECHANICAL SPECIFICATIONS.
09/20/17