HomeMy WebLinkAboutM4-0.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 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, 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.
13. See architectural reflected ceiling plan for all ceiling penetrations.
14. Coordinate architectural, and electrical drawings with mechanical drawings prior to installation.
15. Offset piping, ductwork, etc. as necessary to accommodate structure, beams, columns, and existing equipment.
Electrical
16. Contractor must carefully verify electrical service voltage and phase available before ordering any equipment.
17. 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.
18. The following are to be furnished and wired by EC: disconnect switches, thermal overload switches, manual operating switches and
contactors.
19. 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
20.Submit entire HVAC 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, pumps, piping, valves, and
boilers
Remodel, Demolition & Unforeseen Conditions
21. 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.
22.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.
23.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.
24.Field verify locations of all existing piping, equipment, ductwork, etc.
25.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).
26. All ductwork, diffusers, and equipment shown on this plan are new, except where noted.
27. All new ductwork, piping, equipment, etc. is shown with dark lineweight. All existing ductwork, piping, equipment, etc. is shown with
light lineweight.
28. All removed piping, ductwork, equipment, etc. are to be disposed of by Contractor unless noted otherwise.
29. 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.
30.Cap all demolished and abandoned duct take-offs at trunk duct.
31. 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
32. Insulate all new heating water, domestic hot water, domestic hot water recirculation, radiant floor (mains and runouts to areas being
heated) and snowmelt piping (mains and runouts to areas being heated) with U.L. approved, white, all service, glass fiber, snap-on, pipe
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premolded PVC covers. Provide deduct alternate price to insulate with Armaflex.
33.Insulation for all types of piping shall be carried full size through pipe hangers or pipes shall be supported with vibration clamps.
34.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.
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barrier. Minimum R-Value of 8.0.
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Minimum R-Value of 6.0.
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plenums, etc. is restricted by various codes (such as Denver) piping and fittings shall be insulated the same as domestic cold water piping.
Piping
39. Domestic Hot & Cold 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). Unless otherwise noted, piping on plans has been sized for copper, and if ASTM PEX piping is used,
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shall be installed.
40.Waste & Vent piping inside building:
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.
Waste lines below grade and all Vent lines may 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.
41.Heating Water piping - Piping may be type 'K' copper for all buried lines using wrought copper fittings and 1100F solder. For non-buried
piping, type 'L' copper, wrought copper fittings, and no lead solder. All buried pipe shall be surrounded with 4" of clean sand. Provide
alternate price for PEX tubing (with oxygen diffusion barrier). Unless otherwise noted, piping on plans has been sized for copper, and if
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42.PEX piping shall be supported by continuous cradles supplied by the manufacturer.
43.Condensing Boiler Condensate shall be neutralized via a neutralization basin before discharge into building drainage system. Condensate
piping shall be PVC or other approved material suitable for pH levels of 3.
44.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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45.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.
46.Gas Valves - Lubricated plug valve 175 lb. W.O.G. iron screwed or flanged.
47.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.
48.Support pipe with rod and clevis or clamps. No pipe tape allowed.
49.The piping material shall be cast iron at all pipe penetrations of fire-rated assemblies above the crawlspace.
50. Provide expansion joints or loops on all heating water piping runs in excess of 50'.
51. Dielectric Unions - Furnish and install a dielectric union at all connections where non-ferrous material is in contact with ferrous material
and fluid in not protected with corrosion inhibitors.
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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.
53. Provide plastic grommets on all heating water piping passing through wood joists and studs.
54. Install plumbing clean-outs as required by applicable codes.
Boiler Flue & Combustion Air Piping
55. Boiler flue piping shall be CPVC, complying with ASTM F441.
56. Boiler combustion air piping shall be PVC, complying with ASTM D1785.
Antifreeze Solutions
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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 is prohibited.
61. All returns shall be ducted. Panning of stud cavities, joist bays, etc. is not allowed.
62. Provide 1/4" galvanized mesh screen on all combustion air ducts or openings.
63.Seal all ductwork joints and vapor barrier penetrations at all exterior walls.
64. 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.
65. Provide backdraft dampers at any and all ductwork penetrations through exterior wall (except outside air and combustion air ductwork).
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 4 feet. Maximum length shall be 8 feet.
68. All ductwork or surfaces which are visible behind a grille, register, diffuser or louver shall be painted flat black.
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70.Sheet metal and fittings to be pursuant to SMACNA and ASHRAE standards.
71. All ducts shall be 26 gauge minimum. Duct gauge and construction shall conform to SMACNA HVAC Duct Construction Standards.
72.Contractor to coordinate exact location of grilles and registers before installation.
73.Seal off all ducts during construction.
Vibration Isolation
74. 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.
75. Where specified, spring vibration isolators for support of equipment shall be properly aligned so that support rod does not contact spring
housing.
Controls
76. Mount all thermostats 5'-0" above finished floor.
77.Thermostats & remote temperature sensors shall not be installed above heat emitting equipment, including wall mounted touch screen
controls. Do not mount on exterior walls or above/below forced air supply registers.
78. 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.
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additional information.
80.See Sequence of Operation for additional control information.
Balancing
81. 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.
82.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.
83. 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.
84. Hydronic measurements shall include all motor amperage, voltage readings, motor RPM, pump RPM, pump GPM as calculated from the
pump curve, inlet and outlet pressures at pumps, and temperature and pressure drop at all coils.
85. 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.
86.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.
MECHANICAL SPECIFICATIONS
1. B-1 & 2 Boilers
a. Boilers shall be staged and rotated by integral Lochinvar controls.
b. Boilers shall maintain HWS setpoint at TS-1 temperature sensor. HWS setpoint shall be reset based on outdoor temperatures
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d. P-1 or 2 boiler pump shall run whenever associated boiler is firing.
2. WH-1 Water Heater
a. Upon a call for heating from TS-2 temperature sensor, P-4 water heater pump shall start.
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3. Space Heating
a. Upon a call for space heating from a thermostat, associated on/off control valve shall open and associated P-5x heating water
pump shall start.
4. FC-1 Fan Coil & CU-1 Condensing Unit
a. COOLING: Upon a call for cooling, blower shall start and condensing unit shall be enabled. Condensing unit shall cycle to
maintain room setpoint. Setpoint should be set to be higher than setpoint of EF-1 cooling thermostat.
6. Fans
a. EF-1 elevator room exhaust fan shall be controlled by a wall-mounted line voltage cooling thermostat located in the elevator
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b. EF-2 mechanical room exhaust fan shall be controlled by a wall-mounted line voltage cooling thermostat located in the
mechanical room.
7. ERV-1 & 2 Energy Recovery Ventilators
a. ERV-1 & 2 energy recovery ventilators shall run continuously during occupied hours.
8. SP-1 Sump Pump (Elevator Pit)
a. Pump shall be controlled by integral controls and sensors. Pump shall be disabled from operating if oil is sensed by oil sensor.
Alarms shall be generated during high water condition or if oil is detected.
9. Pumps
a. P-1 boiler pump shall run whenever B-1 boiler is firing.
b. P-2 boiler pump shall run whenever B-2 boiler is firing.
c. P-3 has been removed from the design.
d. P-4 water heater pump shall run whenever there is a call for heat at TS-2 temperature sensor.
e. P-5a heating water pump shall run whenever there is call for space heating.
f. P-5b heating water pump shall run whenever there is a call for space heating.
SEQUENCE OF OPERATION
9/22/14
5 5/15/15 PERMIT SUBMIT
05/27/15