HomeMy WebLinkAboutB13-0552 B14-0032 REV12 plans APPROVED1
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General1.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 theconstruction 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 takeexceptions 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 Codesand 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 thecontractors to install complete & operable systems, which conform to the manufacturers' installations instructions & industrystandards.10.Systems shall be tested for proper operation. If tests show work is defective, contractor shall make corrections necessary at nocost to owner.11.It is the contractors' and manufacturers' responsibility to assure themselves that the code authorities will approve any product tobe installed on the project.12.Provide necessary trenching, backfill, excavation, supports, piping, insulation, saw cutting and patching, concrete/paving, etc., asUHTXLUHG%DFNILOOWUHQFKHVLQ´OD\HUVDQGWR FRPSDFWLRQDQGSDWFKWRPDWFKH[LVWLQJJUDGH13.Systems shall be professionally labeled. Piping shall be labeled with color coded commercial grade labels indicating pipingservice and flow direction. Equipment, pumps and valves shall be labeled with engraved plastic or metal tags and anequipment/valve schedule shall be provided and mounted on the mechanical room wall. Equipment labels shall follow the samenomenclature as the mechanical drawings.14.3URYLGH´KLJKOHYHOFRQFUHWHHTXLSPHQWSDGVEHQHDWKIORRUPRXQWHGPHFKDQLFDOHTXLSPHQWDVVKRZQRQSODQV15.See architectural reflected ceiling plan for all ceiling penetrations.16.Coordinate architectural, structural, electrical, landscaping, fire protection, and interior design drawings with mechanicaldrawings 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 shallobtain and verify exact utility company drawings and requirements.19.Contractor must carefully verify electrical service voltage and phase available before ordering any equipment.Shop Drawings20.Submit entire HVAC and plumbing 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, and heat pumps.21.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 electricalsystems. Equipment shall be drawn to scale.Insulation22.Insulate all new heating water, domestic hot water, domestic cold water, domestic hot water recirculation, heat pumpdesuperheater, storm drain, heating water, chilled water, geoexchange and snowmelt piping (mains and runouts to areas beingheated) with U.L. approved, white, all service, glass fiber, snap-on, 1" thick on mains and 12" thick on runouts, pipe insulation.Insulate fittings with glass fiber blanket insulation and premolded PVC covers. Provide deduct alternate price to insulate withArmaflex. Exposed piping such as in the mechanical room and the crawl space mains shall be insulated with white fiber glasstype. Insulation shall be properly installed on all piping elbows to adequately insulate the 90 degree bend.23.Insulation shall be installed under all radiant heated floors on slab. R-15 minimum.24.Insulation shall be installed under all exterior snowmelt areas. Insulation shall be minimum R-10 "blue board" foam insulation,2" thick. Insulation must have pressure rating suitable for application.25.Insulation for all types of piping shall be carried full size through pipe hangers or pipes shall be supported with vibration clamps.26.DUCT LINER: 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. Use thicker liner where noted on the plans.27.([WHUQDOO\ZUDSDOOXQOLQHGRXWVLGHDLURUVXSSO\DLUGXFWZRUNZLWK´WKLFNLQVXODWLRQZLWKDFRQWLQXRXVYDSRUEDUULHU0LQLPXPR-Value of 6.0.Piping28.All buried pipe shall be surrounded with 4" of clean sand.29.Domestic Hot, Cold & Recirculation piping inside building - Type 'L' copper, wrought copper fittings, and no lead solder.Provide a deduct alternate price for PEX.30.Waste piping (above ground) - Standard weight, C.I. soil pipe, and fittings, or hubless, C.I. soil pipe and fittings.31.Waste piping (below grade and in crawl spaces) - Schedule 40 ABS-DWV plastic pipe and fittings (ASTM D2661) or Schedule40 PVC-DWV plastic pipe and fittings (ASTM D2665). All pipe and fittings shall bear NFS-DWV mark and shall be joined withsolvent weld joints as recommended by the manufacturer.32.Vent piping - Schedule 40 ABS-DWV plastic pipe and fittings (ASTM D2661) or Schedule 40 PVC-DWV plastic pipe andfittings (ASTM D2665). All pipe and fittings shall bear NFS-DWV mark and shall be joined with solvent weld joints asrecommended by the manufacturer.33.GeoExchange piping (within building) - All piping, 3" or smaller, shall be type 'L' copper, wrought copper fittings, and no leadsolder. All piping, 3" piping may also be schedule 40 black steel pipe with EITHER grooved mechanical joint coupling andfittings and grooved mechanical joints (Victaulic or equal) OR wrought-steel fittings and wrought-cast or forged-steel flanges andflange fittings, and welded and flanged joints.
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General1.Immediately notify the engineer of any discrepancies.2.Do not scale drawings. Verify dimensions in field prior to commencement of work.3.It is the intent of these drawings and specifications to establish a standard of quality. The engineer reserves the right totake exceptions to approve methods and materials not reflected herein.4.Work shall be performed in a workmanlike manner to the satisfaction of the Architect & Engineer.5.Labor, materials, and equipment shall conform to the latest applicable editions of local, State, and National Codes andordinances. If conflict between those publications exists, the most stringent requirement shall apply.6.Provide record drawings to the Architect & Engineer detailing, with dimensions, the actual loop field installed.Drawing shall be prepared prior to any backfilling.7.Looping Contractor shall obtain all required permits and approvals prior to the commencement of the installation of theloop field.8.Contractor shall, as a minimum, provide all safety equipment to meet the requirements of all applicable State andNational Codes and standards. Contractor shall meet all requirements of the Occupational Safety and Health Act(OSHA), including all amendments.9.The drawings show the intent of the geoexchange systems but do not show all details required. It is the responsibilityof 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 correctionsnecessary at no cost to owner.Scope Delineations11.Looping Contractor shall be responsible for the complete installation of the closed-loop ground heat exchanger,including drilling of vertical bore holes, installation of all buried HDPE piping, grouting, installation and connection ofthe horizontal pipe headers, pressure testing, flushing and purging of the outside piping system, charging of the systemwith water and backfilling.12.Mechanical Contractor shall be responsible for furnishing and installing the heat pumps, furnishing and installing allcirculating pumps for the loopfield as well as associated valves and piping accessories and filling the loopfield with theproper antifreeze solution, as specified by the Engineer. The Mechanical Contractor shall be responsible for chargingand purging the inside piping systems. Care should be taken to isolate (bypass) the heat pumps during purging toensure the heat pump heat exchangers are protected from debris. Final air removal shall be accomplished using the airseparator. The Mechanical Contractor shall also be responsible for final purging of the entire system.Contractor Qualifications13.Mechanical Contractor: Must have completed a certification training program offered by the International GroundSource Heat Pump Association (IGSHPA) or approved manufacturers' certification program and shall have at least 2years of successful installation experience. The installation personnel must be able to prove current accreditation. Thecontractor shall provide proof of current accreditations (IGSHPA) or certifications.14.Looping Contractor (Vertical Bores only): The Drilling Contractor shall be licensed by the State of applicablejurisdiction, and meet any other requirements as required by any agency with appropriate authority. The LoopingContractor shall have at least 2 years of successful installation experience on projects with closed-loop ground heatexchangers. Looping Contractor must have experience at mixing, pumping and injecting bentonite grouting materialsfrom the bottom of the borehole to the top, including thermally enhanced versions, for vertical installations.15.Looping Contractor (All field types): Fabricators must have completed a certification training program offered byIGSHPA or approved manufacturers' certification program and shall have at least 2 years of successful installationexperience. The installation personnel must be able to prove current accreditation. Each ground heat exchangerfabricator must have performed a fusion procedure under direct supervision of an IGSHPA Accredited Heat FusionTechnician, an IGSHPA approved manufacturer's certification program or a DOT certified heat fusion technician. Eachcertified technician must attend a retraining school annually. All field personnel shall provide proof of currentIGSHPA Installer Accreditation with associated fusion card or certificate from a major HDPE pipe vendor ordistributor. Personnel without current IGSHPA Installer Accreditation are prohibited from working on this project.Shop Drawings16.Submit entire GeoExchange shop drawing submittal data at one time, 3 copies minimum. Submittal to be bound inbinders, indexed in a neat and orderly manner. Partial submittals will not be accepted. Submittals shall include, but notbe limited to, HDPE piping and fittings, grout, antifreeze and proposed purge pump with pump curve.Piping:17.The only acceptable pipe and fitting material for the underground portion of the ground heat exchanger is high-densitypolyethylene (HDPE) products specifically designed, intended and warranted for closed loop ground source heat pumpinstallations.18.Pipe shall be manufactured by Centennial Pipe or Engineer approved equal. Pipe shall only be HDPE 3408manufactured in accordance with ASTM D-3035, shall have a dimension ratio (DR) of 11 and shall have a minimumpressure rating of 160 psi.19.Warranty: The pipe manufacturer shall provide a minimum warranty of 50 years. The warranty shall be transferable.20.Fittings shall meet the requirements of ASTM D-2683 (for socket fusion fittings) and ASTM D-3261 (for butt/saddlefusion fittings).21.Markings:a.Sufficient information, including numerical markings every 2 feet (no exceptions), shall be permanently marked on thelength of the pipe. This information is defined by the appropriate ASTM pipe standard. All fittings shall also besimilarly marked. Marked information shall include Manufacturer's Name, Nominal Size, Pressure Rating, RelevantASTM Standards, Cell Classification Number and Date of Manufacture.b.All piping used for the u-bend heat exchanger (pipe located in the borehole) shall have factory hot-stamped lengthsimpressed every 2 feet on the side of the piping indicating the length of the heat exchanger to that point. The lengthshall read "0" (zero) on one end and the actual heat exchanger total length in intervals of 2 feet.c.All piping used for the horizontal heat exchanger (pipe located in the ground heat exchanger portion of the pit ortrenching) shall have factory hot-stamped lengths impressed every 2 feet on the side of the piping indicating the lengthof the heat exchanger to that point. The length shall read "0" (zero) on one end and the actual heat exchanger totallength in intervals of 2 feet.
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Sequence of Operation (Side A)1.Control Systema.A dedicated Direct Digital Control (DDC) system to control the mechanical equipment is required. DDC system must becompatible with the BAS. A SAVANT Building Automation System (BAS) to control the lighting, AV, security, temperatures,etc. is anticipated for this project.b.DDC system shall include start/ stop/ status/ alarm points for all major equipment. Include web-based animated graphics packagewith remote access and trend logs.c.Thermostats/sensors to be provided by DDC Contractor. See "Thermostat Schedule" Sheet M001 to determine functions requiredat each thermostat. See mechanical plans for locations of thermostats/sensors. Temperature controls are to be integrated into theSavant system.2.HP-1 & HP-2 Water-to-Water Ground Source Heat Pumpsa.Capability for simultaneous heating and cooling shall be provided as follows.a.a.:KHQRXWVLGHDLUWHPSHUDWXUHLVEHORZ) DGM ERWKKHDWSXPSVVKDOORQO\EHSHUPLWWHGWRRSHUDWHLQKHDWLQJPRGH7KHUHDUHheating stages available.a.b.:KHQRXWVLGHDLUWHPSHUDWXUHLVEHWZHHQ) DGM DQG) DGM RQHKHDWSXPSVVKDOOEHGHVLJQDWHGWRRSHUDWHLQKHDWLQJPRGHand the other heat pump shall be designated to operate in cooling mode.There are 2 heating stages and 2 cooling stages available.a.c.:KHQRXWVLGHDLUWHPSHUDWXUHLVDERYH) DGM ERWKKHDWSXPSVVKDOORQO\EHSHUPLWWHGWRRSHUDWHLQFRROLQJPRGH7KHUHDUHcooling stages available.b.When outside air temperature permits and upon a call for space heating and upon a call for heating from TS-2 temperature sensorat BT-1 heating water buffer tank, heat pump(s) shall be staged using PID logic to maintain tank temperature setpoint. TankWHPSHUDWXUHVHWSRLQWVKDOOEHUHVHWEDVHGRQ26$WHPSHUDWXUH )#)WR)#)DGM c.When outside air temperature permits and upon a call for space cooling and upon a call for cooling from TS-3 temperature sensorat BT-2 chilled water buffer tank, heat pump(s) shall be staged using PID logic to maintain tank temperature setpoint. TankWHPSHUDWXUHVHWSRLQWVKDOOEH) DGM d.Heat pumps shall be rotated based on hours of operation.e.2-way control valves shall be set to divert flow to heating water piping when heat pump is in heating mode (i.e. heating watervalves open, chilled water valves closed). 2-way control valves shall be set to divert flow to chilled water piping when heat pumpis in cooling mode (i.e. heating water valves closed, chilled water valves open).f.P-1 & P-3 heat pump source side pumps and P-2 & P-4 heat pump load side pumps shall run whenever their associated heat pumpis signaled to run.g.SHORT CYCLE PROTECTION: Allow a minimum compressor "OFF" time of 4 minutes and a minimum "ON" time of 2minutes.h.RANDOM START: A delay of 1 to 120 seconds (adj) shall be generated after each power up to prevent simultaneous startup of allunits within a building after the release from an unoccupied cycle or power loss.i.GEO SOURCE: Display on DDC graphics the geo source temperature as measured by TS-1 temperature sensor.3.HP-5 Water-to-Air Ground Source Heat Pumpa.FIRST STAGE COOLING: Upon a call for first stage cooling from DDC thermostat, P-0 pump, compressor, and fan shall start.b.HEATING: Upon a call for heating from DDC thermostat, P-0 pump, compressor, and fan shall start.c.SHORT CYCLE PROTECTION: Allow a minimum compressor "OFF" time of 4 minutes and a minimum "ON" time of 2minutes.d.RANDOM START: A delay of 1 to 120 seconds (adj) shall be generated after each power up to prevent simultaneous startup of allunits within a building after the release from an unoccupied cycle or power loss.4.Radiant Floor Heatinga.Upon a call for heating, associated control valve shall open and P-6a/b heating water pump shall start.b.For bathrooms with floor temperature sensors (refer to M001 for locations), maintain floor warming capability within the DDCsystem. Upon a call for heating, associated control valve shall open and P-6a/b heating water pump shall start. Setpoint shall beDGMXVWDEOHWRWKHXVHUYLDWKH%$66HWSRLQWUDQJHVKDOOEH) DGM WR) DGM c.In zones with radiant floor heating and fan coils, radiant floor shall be the first stage of heating.5.Four Pipe Hydronic Fan Coils (Single Zone)a.Fan coils shall be equipped with EC motors (or VFD in the case of FC-7) capable of accepting a 0-10 VDC modulating signal.b.CONTINUOUS FAN: During occupied periods, fan shall run continuously at 30% minimum speed (3 VDC) for air filtration andpurification. During unoccupied periods, fan shall cycle to satisfy calls for heating, cooling, and humidification.c.HEATING: Upon a call for second stage heating, fan shall start, associated control valve shall open and P-6a/b heating waterpump shall start. Fan speed shall be fully modulated (3-10 VDC signal) based on deviation of actual room temperature from roomtemperature setpoint.d.COOLING: Upon a call for cooling, fan shall start, associated control valve shall open and P-7 chilled water pump shall start. Fanspeed shall be fully modulated (3-10 VDC signal) based on deviation of actual room temperature from room temperature setpoint.e.HUMIDIFICATION: See humidification sequence.f.AIR PURIFICATION: AP-1 air purifier shall be on continuously.g.KITCHEN MAKE-UP AIR (FC-6): FC-6 blower shall be electrically interlocked with kitchen exhaust fan. Fan speed shall be setat 1200 CFM. Normally closed OSA damper shall open fully and normally open RA damper shall fully close. P-13A heating coilpump shall start to flow FC-6 heating coil and B-1 and B-2 boilers shall be enabled. 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Sequence of Operation (Side B)1.Control Systema.A dedicated Direct Digital Control (DDC) system to control the mechanical equipment is required. DDC system must becompatible with the BAS. A SAVANT Building Automation System (BAS) to control the lighting, AV, security, temperatures,etc. is anticipated for this project.b.DDC system shall include start/ stop/ status/ alarm points for all major equipment. Include web-based animated graphics packagewith remote access and trend logs.c.Thermostats/sensors to be provided by DDC Contractor. See "Thermostat Schedule" Sheet M001 to determine functions requiredat each thermostat. See mechanical plans for locations of thermostats/sensors. Temperature controls are to be integrated into theSavant system.2.HP-3 & HP-4 Water-to-Water Ground Source Heat Pumps & Boiler Assista.Capability for simultaneous heating and cooling shall be provided as follows. HP-3 is a heating & cooling heat pump. HP-4 is acooling only heat pump.a.a.:KHQRXWVLGHDLUWHPSHUDWXUHLV) DGM DQGEHORZ+3VKDOOEHGHVLJQDWHGWRRSHUDWHLQKHDWLQJPRGHDQG+3VKDOOEHdesignated to operate in cooling mode. There are 2 heating stages (HP-3 & Boiler Assist) and 1 cooling stage (HP-4) available. See"Boiler Assist" section for more information about using the B-5 & B-6 Boiler system as a second stage of heat.a.b.:KHQRXWVLGHDLUWHPSHUDWXUHLVDERYH) DGM ERWKKHDWSXPSVVKDOORQO\EHSHUPLWWHGWRRSHUDWHLQFRROLQJPRGH7KHUHDUHcooling stages available.b.When outside air temperature permits and upon a call for space heating and upon a call for heating from TS-20 temperature sensorat BT-3 heating water buffer tank, HP-3 & Boiler Assist shall be staged using PID logic to maintain tank temperature setpoint.7DQNWHPSHUDWXUHVHWSRLQWVKDOOEHUHVHWEDVHGRQ26$WHPSHUDWXUH )#)WR)#)DGM c.When outside air temperature permits and upon a call for space cooling and upon a call for cooling from TS-21 temperature sensorat BT-4 chilled water buffer tank, heat pumps shall be staged using PID logic to maintain tank temperature setpoint. TankWHPSHUDWXUHVHWSRLQWVKDOOEH) DGM d.Heat pumps shall be rotated based on hours of operation. For heating stages, priority shall be given to heat pump heating overboiler heating.e.HP-3 2-way control valves shall be set to divert flow to heating water piping when HP-3 is in heating mode (i.e. heating watervalves open, chilled water valves closed). 2-way control valves shall be set to divert flow to chilled water piping when HP-3 is incooling mode (i.e. heating water valves closed, chilled water valves open).f.P-35 & P-37 heat pump source side pumps and P-36 & P-38 heat pump load side pumps shall run whenever their associated heatpump is signaled to run.g.SHORT CYCLE PROTECTION: Allow a minimum compressor "OFF" time of 4 minutes and a minimum "ON" time of 2minutes.h.RANDOM START: A delay of 1 to 120 seconds (adj) shall be generated after each power up to prevent simultaneous startup of allunits within a building after the release from an unoccupied cycle or power loss.3.HP-6 Water-to-Air Ground Source Heat Pumpa.FIRST STAGE COOLING: Upon a call for first stage cooling from thermostat, P-40 pump, compressor, and fan shall start.b.HEATING: Upon a call for heating from thermostat, P-40 pump, compressor, and fan shall start.c.SHORT CYCLE PROTECTION: Allow a minimum compressor "OFF" time of 4 minutes and a minimum "ON" time of 2minutes.d.RANDOM START: A delay of 1 to 120 seconds (adj) shall be generated after each power up to prevent simultaneous startup of allunits within a building after the release from an unoccupied cycle or power loss.4.Radiant Floor Heatinga.Upon a call for heating, associated control valve shall open and P-39a/b heating water pump shall start.b.In zones with radiant floor heating and fan coils, radiant floor shall be the first stage of heating.4.Four Pipe Hydronic Fan Coils (Single Zone)a.Fan coils shall be equipped with EC motors capable of accepting a 0-10 VDC modulating signal.b.CONTINUOUS FAN: During occupied periods, fan shall run continuously at 30% minimum speed (3 VDC) for air filtration andpurification. During unoccupied periods, fan shall cycle to satisfy calls for heating, cooling, and humidification.c.HEATING: Upon a call for second stage heating, fan shall start, associated control valve shall open and P-6a/b heating waterpump shall start. Fan speed shall be fully modulated (3-10 VDC signal) based on deviation of actual room temperature from roomtemperature setpoint.d.COOLING: Upon a call for cooling, fan shall start, associated control valve shall open and P-7 chilled water pump shall start. Fanspeed shall be fully modulated (3-10 VDC signal) based on deviation of actual room temperature from room temperature setpoint.e.HUMIDIFICATION: See humidification sequence.f.AIR PURIFICATION: AP-1 air purifier shall be on continuously.g.KITCHEN MAKE-UP AIR (FC-14): FC-14 blower shall be electrically interlocked with two devices: kitchen exhaust fan andGreat Room fireplace gas valve. OSA & RA damper positions shall be as follows:One Device On:Fan speed 1800 CFM, OSA damper 900 CFM, RA damper 900 CFM.Two Devices On:Fan speed 1800 CFM, OSA damper 1800 CFM, RA damper 0 CFM.P-26 heating coil pump shall start to flow FC-14 heating coil and B-5 and B-6 boilers shall be enabled. Pump speed shall be varied 9'& WRPDLQWDLQ) DGM GLVFKDUJHDLUWHPSHUDWXUHDW76WHPSHUDWXUHVHQVRU PRXQWHGLQ)&VXSSO\DLUGXFW 3SXPSVKDOOEHGLVDEOHGLI26$WHPSHUDWXUHLVJUHDWHUWKDQ) DGM RUGXULQJDFDOOIRUFRROLQJh.&2,/)5((=(3527(&7,21 $OO)DQ&RLOVWKDWWDNH2XWVLGH$LU ,IWHPSHUDWXUHDWIUHH]HVWDWHYHUGURSVEHORZ) DGM IRUlonger than 2 minutes (adj), then fan shall stop and outside air damper shall close and an alarm shall be indicated in the controlsystem. Manual reset of the alarm shall be required.
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