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HomeMy WebLinkAboutM001-HVAC-GENERAL-NOTES-Rev.0APPLICABLE CODES AND ORDINANCES: Provide all materials and equipment and perform all labor required to install complete and operable mechanical systems as indicated on the drawings,ass specified and as required b code. YPY Entire installation shall be in strict accordance with applicable codes and ordinances. Secure and pay for all required permits. Provide a minimum of 1V-0" between exhaust outlets, plumbing vents and all outside air intakes. Provide a minimum of 3'-0" between exhaust outlets and operable windows or tloors Contractor shall not locate an duct or 'n direct) over an electrical net swatch ear Y piping Y Y Pa 9 transformer, etc. Coordinate locations of ducts and piping with the Electrical Contractor to avoid these conflicts. AS -BUILT DRAWINGS: Contractor shall maintain a set of drawings that document field changes to these drawings, and shall submit them to the ArchitecVEn inear as art of the project close out. 9 P P 1 ARCHITECT: Contractor shall be guided by the Architect's reflected ceiling plan for exact location of diffusers, registers and grilles unless otherwise noted. Coordinate diffuser, register, and grille locations With architectural reflected ceiling plans, lighting, and other ceiling items and make minor duct modifications to suit. Exterior louvers are indicated for informal only. Detailed descrptions are provided in the architectural specifications. Furnish all material and equipment as specified except where specific subsi Luton is proposed and reviewed by the ArchitecVEngineer. GENERAL: Do not operate new HVAC systems unfil drywall sanding is complete and primed ancjobsite dust is no longer significant. Construction custis extremely detrimental to the long term operation of the HVAC system. Provide temporary heating or cooling/cehumicificaton systems during construction if it is desired a required. These drawings indicate required sizes and points of termination for aping, ductwork, conduit, at. The equipment shown illustrates suggested routing, but all necessary offsets and fittings may not be shown. Contractor shall install his work in a manner that will conform with the structure. Contractor shall avoitl obstructons, preserve head room and maintain maximum clearance Without additional cost to the Owner. All dimensions shown on these plans are in feet and/or inches unless otherwise noted. Mechanical work shall be ever complete in detail and all miscellaneous items of material and labor P Y necessary to complete the work bed shown or reasonably implied on drawings or specificin theations, shall be included in the contract. Proposal shall be based on specified material and equipment. In cutler to promote competition, however, bidders may submit alternate proposals on any alternate materials andor equipment they wish to propose, including any price changes affected by acceptance of alternatives. These must be provided In addition to the base bid, not In place of the base bid. Contract document drewings for mechanical work are diagrammatic and are intended to convey scope and general arrangement only. Install all mechanical equipment and appurtenances in accordance with Manufacturers' recommendations contract documents and likable codes and regulations. applicable Provide vibration isolation as specified for all mechanical equipment to prevent transmission of vibration to buildinr structure. RELEASED FOR CONSTRUCTION ted to and within 50 feet of isolated aims) throughout mechanical equipment Subject to compliance with all regulators of State and Local Codes yVm�trnrinPll�aL DATE: \ 10/16/19 Mechanical Symbols and Abbreviations Abbreviations Drawing Symbols Sheet Metal Symbols ACC ACCU air cooled condenser air cooled condensing unit GC GPM General Contractor gallons per minute Denotes section Section number Fire damper Fo x� Volume damper�— AFF above finish floor H humidifier AHU air handling unit HDR heavy duty register or grille ILS 1 Supply diffuser ®q1 ❑® AS air separator HRB heat recovery box IM1 B boiler (hot water or steam) HRU variable refrigerant heat recovery unit Sheet number Where -- -- -- -- Supply duct user -- 19 BCC branch circuit controller HP heat pump Arrow, indicates Directors section BDD backdraff damper HWP hot water pump i n which Section is cut Is located ---- ---- ---- ---- Return duct dser --- -- 0 BOD bottom of duct H WR hot water return C chiller HWS hot water supply Supply register co CC CD cad net convector ceiling dffuser(supply ar) NIX IN heat exchanger inch Denotes detail Detail number — — — — Linear diffuser — CEF ceiling exhaust tan KEG thchen equipment contractor KKREB CFM cubic feet par minute LAT leaving air temperature D 1 Flexible connectionCUH cabinet unit heater (electric a hw) LS linear slot diffuser CHWP chilled water pump MAN manual lia M1 a —Sheet number Return au grille m CHWR chilled water return MAU make up air unit Where detail -- — — — — CHWS chilled water supply MFR Manufacturer Is located Exhaust grille CT cooling tower MBH 1000 BTUh Denotes CP condensate pump (steam) MC Mechanical Contracts Construction Exhaustfan 0 CW DB cold water dry pulp CIA DAL outside air outside air louver Stall pant Square Elbow with Turning Vanes DOAS DSAC tledcafotl outdoor air system ductless split air conditioner PD PSI plaque dlfuser pounds per square inch - -- -- -- Rectangular to round duct transitionstransitionseter ® -- diameter diamDB RA rod air un E entering air dry bulb RD rountltliffuser Temperature Control Symbols EWB entering air wet bulb RG return air grille EBB electric baseboard radation RPM revolutions per minute Room thermostat or sensor TD EC Electrical Contractor RTU roof top unit -- -- ECH electric cannot heater SA supply air Room humidstat a sensor Q w Qs ECR eggcrate grille SBCC sub branch circuit controller EDC electric duct cal SDG spral duct grille Note Designation Motorized damper EF exhaust fan SP static pressure EG exhaust grille SR supply register Plan Notes: Specific information as indicated on a EH exhaust hood SVK solenoid valve kit drawing ER exhaust register TOO Temperature Control Contractor ERV energy recovery ventilator TSP total static pressure Leader line of plan note referenced ESP external static pressure UH and heater T directed to item of plan note EVC evaporative cooler VAV variable air volume box reference EWH electric wall heater VD volume damper Ito F furnace WB wet bulb 1 Circle with number indicates a plan FD fire damper WT weight note reference, with the number SD fire and smoke damper XT expansion tank indicating the item number of the plan FLA full load amps note referenced FPM feet per minute FPVAV fan powered variable sir volume box General Plan Notes: General information as it pertains FT toot only to the drawing it is on FTR fin tube radiation G gas General Notes: General informal pertaining to all the drawings of the discipline it is on The location of existingunderground utilities is shown in an approximate Way only. The Contractor gr PP Y Y shall payfodetermine the exact locatlon of all sell by failure before commencing work. The Contracts shall r for and repair all damages indic failure to exact) locate and preserve an and all pay P 9 by Y p Y underground utilities unless otherwise indicated. Coordinate construction of all mechanical work with Architectural Structural Civil Electrical wok etc., shown on other contract document drawings. Each respective contractor shall b s responsible for coordinating the installation of his work with the wok of other contractors and trades prior to the installation. Maintain a minimum of 6-8" clearance to underside of pipes, ducts, conduit, suspended equipment, etc., throughout access routes in mechanical rooms. All tests shall be completed betas an mechanical equipment or 'n insulation is applied. P Ypiping PP Locate all temperature, pressure, and flow measuring devices in accessible locations with straight section of pipe or duct up and downstream as recommended by the Manufacturer for appropriate accuracy. Work shall include startup of all systems, furnishing at operating and maintenance instructions and one (1) year guarantee, commencing on date of acceptance by the Owner or as otherwise specified. Testing, adjusting, and balancing agency shall be by a member of the Associated Air Balance Council (AABC) or the National Environmental Balancing Bureau (NEBB). Testing, adjusting, and balancing shall be performed in accordance with the AABC standards. Where two or more items of the same type of equipment are required, the product of one Manufacturer shall be used unless otherwise noted. Coordnate all equipment connections with Manufacturerscertified drawings. Coordnate and provide all duct and aping transitions required for final equipment connections to perished equipment. Field verify and coordinate all duct and piping dimensions before fabrication. The locations of all items shown on the drawings or called fain the specifications that are not definitely fixed by dimensions are approximate only. The exact locations necessary to secure the best conditions and results must be determined by the project site condtions and shall have the approval of the Engineer before being installed. Do not scale drawings. At miscellaneous steel required to ensure proper installation and/or as shown in details for piping, cucmW, and equipment shall be furnished and installed by the Mechanical Contractor. Provide access panels for installation in walls and ceilings, where required, to service dampers, valves, smoke defectors, and other concealed mechanical equipment. Access panels shall be turned over to General Contractor for installation. All equipment, aping, ductwork, etc., shall be supported as detailed, specfiec, and/or required to provide a vibration free installation. All ductwork, aping, and equipment supported from structural steel shall be coordinated with the General Contractor. All attachments to steel bar joists, pusses, orjast girders shall be at the upper member. Provide beam clamps meeting MSS standards. Welding to structural members shall not be permitted. The use of c-clamps shall not be permitted. Mechanical equipment, ductwork, and aping shall not be supported from metal deck. All root mounted equipment curbs for equipment provided by the Mechanical Contracts shall be furnished by the Mechanical Contractor and installed by the General Contractor. Local and sizes of all floc, wall, and roof openings shall be coordinated with all other trades. All openings in fire walls due to ductwork, aping, conduit, etc., shall be fire stopped With a product similar to 3M ore equal Product shall be listed b UL a FM and meet the requirements of local and Q Y Q state codes. All air conditioning condensate drain lines from each air handling unit a rooftop unit shall be piped full size of the unit drain outlet, W th'PR trap, and piped to the nearest drain a root deck. See details shown on the drawings or the contract specifications for depth of air conditioning condensate traps. Refer to typical details for ductwork, aping, and equipment installation Mechanical General Notes All valves, coils, tlampers, etc. Shall be installed allowing easy access to them. Areas adjacent to the access panels shall be clear of obstruction. Furnish and install all equipment and material requiretl to complete the installation as shown on the drawings. Equipment sizes, weights, power, geometry and service space requirements may vary between different Manufacturers. Consult approved Manufacturer drawings as subrnitec and coordinate with these drawings. It shall be the Contractors responsibility to bear the costs associated with this coordination. All air handling units shall operate without moisture carryover. Locate all mechanical equipment (RTUs, single duct, variable volume, constant volume and fan powered boxes, tan coil units, cabinet heaters, unit heaters, unit ventilators, cals, steam humidifiers, etc.) for unobstructed access to unit access panels, controls, and valuing. Refer to mechanical details for additonal equipment requirements. HVAC I SHEETMETAL: Certain items such as rises and drops in ductwork, access doors, volume dampers, etc., are indicated on the contract document drawings for party for a specific locafion requirement and shall not be interpreted as the extent of the requirements for these items. All duclwrork dimensions, as shown on the drawings, are internal clear dimensions. Keep all ductwork, duct system and equipment openings covered with achieve duct protective wrap like VentureTape 1512, until system start-up. This is to prevent intrusion at construction din and deals into the duct system, and HVAC equipment. Provide flexible connections in all ductwork systems (supply, return, and exhaust) connected to air handling units,fans, and other equipment which require vibration isolation. Flexible connections shall be provided at the point of connection to the equipment unless otherwise noted. Unless otherwise noted, all ductwrork is overhead tight to the underside of the structure, with space for insulation and below any required piping. Runs of flexible duct shall not exceed 5-0". Flexible dint shall not be used as an elbow. Provide sheet metal elbow at diffuser neck where tap is not out of the bottom of the supply main. Refer to details. All cucNrork shall be coordinated with all trades involved. Offsets in ducts, including divided ducts and transitions around obstructions, shall be provided at no atldtional cost to the Owner. Provide access tloors in ducN+ak to provide access for all smoke de ectors, fire dampers, smoke dampers, volume dampers, humidifiers, coils, and other items located in the cuctwak which require service and/or inspection. Smoke detectors shall be furnished by Unit Manufacturer and wired by the Electrical Contractor. The Mechanical Contractor shall hereresponsible for mounting the smoke detector in tluctwork as W 9 shown on the drawings and in accordance with Manufacturers printed instructions. See specifications for ductwork gauges, Making, hangers, and other requirements. Contractor shall not locate any dint a aping directly over any electrical panels, switchgear, transformer, etc. Coordinate locations of ducts and aping with the Electrical Contractor to avoid these conflicts. All ducts penetrating shaft walls shall be sealed airtight with firestop. Provide volume dampers upstream of all air inlets/outlets unless otherwise noted. All rooftop units shall be accessed from the roof. Power for all rooftop units shall be wired by the Electrical Contractor and shall be placed on a dedicated circuit. All duclwrork shall be sealed per the specifications and shall not be accepted with total duct leakage rates in excess of 10 / . Locate rooftop units on roof. Coordinate with structural plans. Set units as required to allow supply and return openings to clear roof structure. Furnish and install ran hoods on flues and intake ducts above roof. Provide companion opposed blade volume dampers with all diffusers mounted in drywall ceilings. Do not provide companion volume dampers with diffusers mounted in lay -in tile ceilings. Provide manual volume dampers in the branch ducts seam diffusers located above la in tle ceilings. P 9 Y 9 Diffusers, registers, and grilles mounted in drywall ceilings shall have plaster frames. Unless otherwise noted all ductwork above ceilings shall be insulated with 1Yx" ductwrap. Ductwrap shall be J5 to / cu ft. density. Unless otherwise noted all ductwork in unconditioned spaces shall be insulated with 2' ductwrap (Min 116). Ductwrap shall be.75 to/ cu t. density. Install volume damper at each branch takeoff from main supply dints. Mechanical Contractor shall furnish and install a Ti steel angle frame around each rooftop unit roof opening. Field weld frames to top of joists. Locate rooftop units on root so that the duct drops will clear the root structure. Refer to Mechanical Detail Sheets for atldtional equipment requirements. Phenolic duct by Pal -Duct or Kool-Duct is an acceptable sternum to sheelroetal duct and insulation in concealed spaces. Use flanged joints. Submit detailed duct drawings for engineer review. REFRIGERANT EQUIPMENT AND PIPING: Conceal all refrigerant pang unless otherwise noted. Contact Engineer for alternatives if concealment is not possible. Slope refrigerant piping one percent in the direction of oil return. Liquid lines may be installed level. Install horizontal reMgeant hot gas discharge aping with Y4" per 10 feet downward slope away from the compressor. Install hoizontal reMgerant suction lines With Y4" Per 10 feet downward slope to the compressor, with no long traps or dead ends which may cause al to separate from the suction gas and return to the compressor in damaging slugs. Provide line size liquid indicators in man liquid line leaving condenser a receiver. Install moisture -liquid indicators in liquitl lines between filter dryers and thermostatic expansion valves and in liquid line to receiver. Provide line size strainer upstream of each automatic valve. Provide shutoff valve on each side of stainer. Provide permanent liter dryers in lox temperature systems and systems using hermetic compressors. Provitle replaceable cartridge fitter dryers with three valve bypass assembly for solenoitl valves, adjacent to receivers. Provide refrigerant charging valve connections in liquid line between recover shutoff valve and expansion valve. Insulate all interior linesets with in thick, flexible elastomenc neural Insulate exterior linesets with 1" thick flexible elastomenc insulation with external .020" aluminum protective jacket. RELATED ELECTRICAL AND PLUMBING: Unless otherwise noted all low voltage wiring (24 volts) shall be provided and installed by the Mechanical Contractor . This includes fans, radiant heaters, rooftop units, etc. Unless otherwise noted line voltage wiring (120 not or greater) shall be provided and installed by the Electrical Contrecor. Wring should be concealed at all limes unless otherwise noted on the plans. Contact the Engineer if concealment is not possible. All control wire and conduit shall comply with the National Electric Code (NEC) and Division 1W6 of the specifications. Condensate drain a run out shall be full size to the nearest drain. Refer to "P" sheets for routing 9 Coordinate installation of gas piping fa HVAC units with Plumbing Contracts. Furnish and install a gas cock at each unit connection. Refer to electrical and plumbing drawings for additional coordination with these tlrawings. Any unit supplied with natural a LP gas shall be furnished with pressure regulators by Unit Manufacturer. APPEARANCE: All equipment should be installed with great regard to a neat finished product. Whenever possible, wiring should be routed in such a way as to minimize visidlty. Piping should be fight to structure whenever possible, and orthogonal. Eliminate the need for condensate pumps if possible. Contact the Engineer prior to installing any equipment that will not be able to be installed in a neat, first class manner, consistent with the Manufacturer's installatlon instructions. RELATED GENERAL CONSTRUCTION: Unless otherwise noted flashing of roof openings will be done by the General Contractor. Deliver rooftop unit and exhaust fan curbs to General Contracor for installation. Contact General Contracts to coordinate this portion of the work. Concrete housekeeping pads to suit mechanical equipment shall be sized and located by the Mechanical Contractor. Minimum concrete pad thickness shall be 3W unless otherwise noted. Pad shall extend beyond the equipment a minimum of 6" on each side. Concrete housekeeping pads shall be provided by the Mechanical Contractor. It shall be the responsibility of the Mechanical Contractor to coordinate size and locatlon of concrete housekeeping pads with the General Contractor. Exterior louvers are indicated for informal only. Louver sizes, locations, and details shall be coordinated with the General Contractor. SUBSTITUTIONS: Cost of any changes required by this, or other trades, due to substitution of equipment other than the basis of design, shall be included in the Mechanical Contractor's proposal. UTILITIES: Unless otherwise noted the local gas company shall provide gas to the building and furnish and install the meter. Connecton to the meter and extension of the aping shall be made in accordance With the utility company requirements. Contact local utility company to arrange for gas meter installation. Furnish and install piping and specialties as required to receive meter. Verify local contlitions at the site. RELATED CONTROLS: Unless otherwise noted locate all room thermostats and humidistats 4'-0" (centerline) above finish floor. Notify the Engineer prior to installation of any rooms where the above locafion cannot be maintained or where there is a question on locatlon. At control wiring and related control components should be concealed unless otherwise noted on the plans. Contact the Engineer if concealment is not possible. TEMPORARY SERVICE: Equipment provided as pan of this contract should not be used for heafing/coolingrventilation of the project prior to all sanding being complete, and at least 1 coat of paint on all surfaces. The intent of this is to prevent the infiltration of construction dust into the heating / cooling coils and causing long term performance or reliability issues. c� W I Z> I lir F�— e LU LUCC O m C Za W J - J LUO is. U I t i i i CERTIFIED BY. 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