HomeMy WebLinkAboutM4.0 Mechanical Specifications and Sequence of Operation.pdfMechanical SpecificationsGeneral1.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 constructionindustry 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 toapprove 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 andordinances. 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 toinstall 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 toOwner.11.It is the Contractors' and manufacturers' responsibility to assure themselves that the code authorities will approve any product to be installedon the project.12.Systems shall be professionally labeled.13.Coordinate architectural, structural, electrical, fire protection, and interior design drawings with mechanical drawings prior to installation.14.Offset piping, ductwork, etc. as necessary to accommodate structure, beams, columns, and existing equipment.Electrical15.Contractor must carefully verify electrical service voltage and phase available before ordering any equipment.16.The following are to be furnished by MC and wired by EC: equipment motors, magnetic starters, line voltage thermostats, factorydisconnect switches (if specified as part of factory wired equipment) resistance heaters, fire and smoke detectors.17.The following are to be furnished and wired by EC: occupancy sensors, disconnect switches, thermal overload switches, manual operatingswitches and contactors.18.The following are to be furnished and wired by MC: low voltage thermostats, control transformers, control relays, control panels, motorizedvalves, motorized dampers, pilot lights, multi-speed switches and interlocks.Shop Drawings19.Submit entire HVAC and plumbing shop drawing submittal data at one time.Remodel, Demolition & Unforeseen Conditions20.Visit site prior to bid and verify the conditions. Include in the bid, costs required to make work meet existing conditions, whether indicatedor not.21.Provide mechanical demolition required. Refer to architectural demolition drawings for location and extent of demolition required. Visitsite prior to bid to determine extent of work involved. Provide labor and materials as required to maintain and/or restore continuity ofservice to existing systems.22.In as much as design for remodel, renovation and/or rehabilitation requires that certain assumptions be made regarding existing conditionsand because some of these assumptions cannot be verified without destroying otherwise adequate or serviceable portions of the building, theEngineer cannot assure the Owner or the Contractor that the professional consulting services herein encompass all contingencies. Fieldcoordination during construction is imperative. Contractors bidding this work must make reasonable allowances for unseen conditions andshould include associated allowances in their bids noted as such.23.Field verify locations of all existing piping, equipment, ductwork, etc.24.All ductwork, diffusers, and equipment shown on this plan are new, except where noted.25.All new ductwork, piping, equipment, etc. is shown with dark lineweight. All existing ductwork, piping, equipment, etc. is shown with lightlineweight.Insulation26.Insulate all new domestic hot water, cold water and recirculation piping with Armacell closed cell foam insulation, 3/4" thick, minimumR-3.7 required.27.Insulation for all types of piping shall be carried full size through pipe hangers or pipes shall be supported with vibration clamps.28.Internally line all new ductwork inside the thermal envelope (unless noted otherwise) with 1/2" thick, 2.0 PCF, U.L. rated, glass fiberinsulation with a continuous vapor barrier.29.Wrap all outside air ductwork with 1-1/2" thick duct wrap insulation.Piping30.Domestic Hot, Cold and Recirculation piping inside building - Buried lines, PEX tubing (no oxygen diffusion barrier necessary).Non-buried lines, type 'L' copper water tube, wrought copper fittings and no lead solder. Provide alternate pricing for PEX tubing(no oxygendiffusion barrier necessary).31.Waste lines and Vent lines may be Schedule 40 ABS-DWV plastic pipe and fittings (ASTM D2661) or Schedule 40 PVC-DWV plastic pipeand fittings (ASTM D2665). All pipe and fittings shall bear NFS-DWV mark and shall be joined with solvent weld joints as recommendedby the manufacturer.32.PEX piping shall be supported by continuous cradles supplied by the manufacturer.33.Gas Piping - Schedule 40 black steel pipe, 150 lb. malleable iron screwed fittings on above ground pipe, welded fittings with all pipingcoated and wrapped on buried pipe. Final connections to appliances can be made with flexible CSST piping, 3 feet maximum.34.For commercial kitchen gas appliances, use "Safe-T-Link" gas connector kits with stainless steel braid and extruded coating, quickdisconnect, ball valve and restraining cable per code, for all connections to under the hood that are moveable (wheels).35.Gas Valves - Lubricated plug valve 175 lb. W.O.G. iron screwed or flanged.36.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:SVLJZSIRU)VHUYLFHWLJKWVKXWRII,OOLQRLVGXDOSXUSRVHEDODQFLQJVKXWRIIYDOYHHoffman, Sarco, or equivalent.37.Refer to Fixture Connection Schedule for pipe sizes to individual fixtures.38.Support pipe with rod and clevis or clamps. No pipe tape allowed.39.Dielectric Unions - Furnish and install a dielectric union at all connections where non-ferrous material is in contact with ferrous material andfluid is not protected with corrosion inhibitors.40.Install plumbing clean-outs as required by applicable codes.Ductwork41.Install all ductwork as high and tight to existing structure as possible to maximize available ceiling height.42.Duct sizes shown on drawings are outside (sheet metal) duct dimensions.43.All ductwork shall be sealed airtight with duct mastic. Duct tape is prohibited.44.Seal all ductwork joints and vapor barrier penetrations at all exterior walls.45.Provide backdraft dampers at any and all ductwork penetrations through exterior wall (except outside air, combustion air, and grease exhaustductwork).46.Provide turning vanes in all mitered rectangular elbows.47.Provide volume dampers at all accessible round duct take-offs.48.All ductwork or surfaces which are visible behind a grille, register, diffuser or louver shall be painted flat black.49.All ducts shall be 26 gauge minimum. Duct gauge and construction shall conform to SMACNA HVAC Duct Construction Standards.50.Contractor to coordinate exact location of grilles and registers before installation.51.Seal off all ducts during construction.Type I Grease Exhaust Ductwork52.Type I grease exhaust ductwork shall slope not less than one-fourth unit vertical in 12 units horizontal toward the hood or toward anapproved grease reservoir.53.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 lessthan 0.044 inch (No. 18 Gage) in thickness.54.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.55.Joints, seams and penetrations of grease ducts shall be made with a continuous liquid-tight weld made on the external surface of the ductsystem. Internal welding or brazing shall be ground smooth. Penetrations not welded such as access doors shall sealed by devices listed forthe application.56.Duct joints shall be butt joints or overlapping duct joints of either the telescoping or bell type. Overlapping joints shall be installed toprevent ledges and obstructions from collecting grease or interfering with gravity drainage to the intended collection point.57.Duct-to-exhaust fan connection shall be flanged and gasketed at the inlet of the fan for vertical/horizontal discharge fans.58.Grease duct bracing and supports shall be of noncombustible material securely attached to the structure and designed to carry gravity loadswithin the stress limitations of the International Building Code. Bolts, screws, rivets and other mechanical fasteners shall not penetrate ductwalls.59.*UHDVHGXFWVKDOOEHZUDSSHGZLWKWZROD\HUVRI´WKLFNILUHZUDSV\VWHP0)LUH%DUULHU'XFW:UDSWKDWKDVEHHQWHVWHGLQaccordance with ASTM E 814 and ASTM E 2336. Wrap shall be installed in strict accordance with manufacturer's written instructions andshall be protected where subject to physical damage. Clearance to combustibles for duct wrap is zero inches.60.Unwrapped grease duct and exhaust equipment serving Type I hoods shall have a clearance to combustibles of not less than 18 inches, andshall have a clearance to noncombustible construction and gypsum wall board attached to noncombustible structures of not less than 3inches.61.Cleanouts shall be equipped with tight-fitting doors constructed of steel having a thickness greater than or equal to the duct. Doors shall beequipped with a substantial method of latching, sufficient to hold the door tightly closed. Doors shall be designed so that they are operablewithout the use of a tool. Door assemblies, including any frames and gasketing, shall be approved for the purpose, and shall not havefasteners that penetrate the duct. Listed and labeled access door assemblies shall be installed in accordance with the terms of the listing. Asign shall be provided on access opening panels with wording as follows: "ACCESS PANEL. DO NOT OBSTRUCT."62.Contractor shall perform grease duct tests per 2012 IMC 506.3.2.5.Controls63.Mount all thermostats 5'-0" above finished floor. Thermostats & remote temperature sensors shall not be installed above heat emittingequipment, including wall mounted touch screen controls. Do not mount on exterior walls or above/below forced air supply registers.Balancing64.Air flows must be balanced, and fan belts and drive systems adjusted as required. Balance Contractor shall furnish subsequent air balancesafter acceptance of the building. Balancing scope of work shall include supply air, return air, make-up air, and exhaust air. Scope shall alsoinclude measurement of building pressure with respect to the outside.Sequence of Operation1.Commercial Kitchen VentilationA.Provide control panel for Kitchen Hood KEH-1. Panel shall interlock KEF-1 and MAU-1 andautomatically control Ansul system. In the case of fire, Ansul shall be activated, MAU-1 shall beoff, KEF-1 shall be on and solenoid valve in gas line to kitchen shall shut-off.B.KEF-1 Kitchen Exhaust Fana.Fan shall be controlled by on/off fan switch located on the hood.b.Include a temperature sensor interlock to comply with 2012 IMC 507.2.1.1. Exhaust fan shallautomatically turn on during cooking operations.C.MAU-1 Gas Direct-fired Make-Up Air Unita.Fan shall run whenever exhaust fan is on.b.Motorized damper shall open when fan is called to run and shall close when fan is off.c.Integral modulating gas control valve shall modulate to maintain discharge air temperature of) DGM ,QFOXGHURRPRYHUULGHFRQWUROVd.*DVKHDWLQJVKDOOEHGLVDEOHGDERYH) DGM RXWGRRUDLUWHPSHUDWXUHVe.Cooling: n/a2.WH-1 Gas-fired Water HeaterA.*DVZDWHUKHDWHUVKDOOEHFRQWUROOHGE\LQWHJUDOFRQWUROVWRPDLQWDLQWDQNWHPSHUDWXUHRI) DGM B.P-1 domestic hot water recirculation pump shall be controlled by integral aquastat and timer.3.EF-1 Bathroom Exhaust FanA.EF-1 shall be electrically interlocked to run whenever bathroom lights are on.4.EF-2 Ice Machine Exhaust FanA.EF-2VKDOOEHFRQWUROOHGE\DZDOOPRXQWHGOLQHYROWDJHFRROLQJWKHUPRVWDWVHWDW) DGM /LQHvoltage thermostat shall be furnished by MC and wired by EC.8/6/14