Engineering Manual o.. - HVAC.Amickracing

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CHILLER, BOILER, AND DISTRIBUTION SYSTEM CONTROL APPLICATIONSSUPPLIERSUBSTATIONCENTRALSYSTEMCONSUMERDDCTI01TZA+41PZA–42PZA+43TIC44SSFOUTSIDE AIRTIC28TIC38Y11MTI12PI13PZA–27PZA+24TZA+26TSA+25PZA–37PZA+34TZA+36TSA+35PSFPDIC14HEX1HEX12T121TSA+22T131TSA+32PDIC45PI110Y19Y18MY23MMY29Y33MMY39PRFQIR111Y17MPI16TI15Y48PSA+52QIR53PI46SRFMY51Y54MTI47Y49Y61Y55LIC56PIC57Y64LIC63MCOLD WATERPSA+58EXPANSION TANKWATER SUPPLY TANKQIR62M11429Fig. 136. DDC Control of Large High Performance Indirect Heat Transfer Substation.388ENGINEERING MANUAL OF AUTOMATIC CONTROL
CHILLER, BOILER, AND DISTRIBUTION SYSTEM CONTROL APPLICATIONSControl Strategies1. Primary Flow Loop Differential Pressure Control:Provides a constant value pressure drop across the heatexchangers. Actuator control valves (Y17, Y18) open orclose sequentially to maintain the pressure drop measuredby PDIC 14.2. Secondary Loop Supply Flow Temperature Control: TheSSF temperature is reset from outdoor air temperature(Fig. 137). The actual SSF temperature is measured bysensors TIC 28 and TIC 38. The regulation of the heatflow through the HEX is provided by the actuator controlvalves Y 23 and Y 33 in the primary return flow line ofeach heat exchanger.3. Secondary Flow Loop Differential Pressure Control:Circulating pumps Y 48 and Y 49 are switched off or onand the speed varied to maintain the differential pressuresetpoint. A frequency converter (fc) controls pump speed.4. SSF Loop Pressure Control: Maintains the pressuresensed by transmitter PIC 57 within a defined range toavoid too low pressure (vaporization) and too highpressure (pump overload). Vent valve Y 54 maintains thehigh limit and compressor Y 55 maintains the low limit.5. Expansion Tank Water Level Control (WLC) Loop:LIC 56 maintains the expansion tank water level. NormallyPRF water through Valve Y 51 provides make-up water, incases of a high quantity water loss, Pump Y 64 pumps makeupwater from the water supply tank. The WLC protectsthe circulating pumps against running without water.6. Water Supply Tank Water Level Control: LIC 63) controlsValve Y 61, providing make-up water from the cold water.7. Secondary Return Flow (SRF) and the Primary ReturnFlow (PRF) temperatures are limited to provide a hightemperature drop between supply and return flow.SSF SETPOINT TEMPERATURE (˚C)1801601401201008060LIMIT SSF SETPOINTTEMPERATURE ISUNLIMITED-25 -21 -17 -13 -9 -5 -1 3 7 11 15 19OUTSIDE AIR TEMPERATURE (˚C) M15294Fig. 137. Adjustment of Temperature Curves.DDC CONTROL OF A SMALL HOUSE SUBSTATIONDISTRIBUTION SUBSTATION CONSUMERDDCTI01TI31OUTSIDE AIRROOMTZA+21TIC22Y23SSFPSFHEATTRANSFERSTATIONTI12Y11MHEX 1TIC24SRFPRFM11436Fig. 138. DDC Control of a Small House Heat Transfer Substation.ENGINEERING MANUAL OF AUTOMATIC CONTROL389
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FOREWORDThe Minneapolis Honeywell R
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Electronic Control Fundamentals ...
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Engineering Information ...........
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SMOKE MANAGEMENT MANAGEMENT FUNDAME
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CONTROL FUNDAMENTALSControl System
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CONTROL FUNDAMENTALSDeadband: A ran
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CONTROL FUNDAMENTALSHVAC SYSTEM CHA
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CONTROL FUNDAMENTALSInfiltration is
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CONTROL FUNDAMENTALSROTATINGGRANULA
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CONTROL FUNDAMENTALS-PATHOFIONSAIRF
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CONTROL FUNDAMENTALSOPENFINALCONTRO
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CONTROL FUNDAMENTALSBecause the hea
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CONTROL FUNDAMENTALSON“CLOSE”SW
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CONTROL FUNDAMENTALSOUTDOOR AIRTEMP
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CONTROL FUNDAMENTALSPROPORTIONAL-IN
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CONTROL FUNDAMENTALSVALVESTEAM(CONT
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CONTROL FUNDAMENTALSIn terms of hea
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CONTROL FUNDAMENTALSFLAPPERSPRINGSI
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CONTROL FUNDAMENTALSApplying the fl
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CONTROL FUNDAMENTALSCHARACTERISTICS
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PSYCHROMETRIC CHART FUNDAMENTALSPsy
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PSYCHROMETRIC CHART FUNDAMENTALSWAT
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PSYCHROMETRIC CHART FUNDAMENTALShea
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PSYCHROMETRIC CHART FUNDAMENTALS28.
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PSYCHROMETRIC CHART FUNDAMENTALS-18
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PSYCHROMETRIC CHART FUNDAMENTALSREF
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PSYCHROMETRIC CHART FUNDAMENTALSRec
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PSYCHROMETRIC CHART FUNDAMENTALSCOO
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PSYCHROMETRIC CHART FUNDAMENTALS32
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PSYCHROMETRIC CHART FUNDAMENTALS∞
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PNEUMATIC CONTROL FUNDAMENTALSPneum
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PNEUMATIC CONTROL FUNDAMENTALSINTRO
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PNEUMATIC CONTROL FUNDAMENTALSSYMBO
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PNEUMATIC CONTROL FUNDAMENTALSdiaph
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PNEUMATIC CONTROL FUNDAMENTALSconst
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PNEUMATIC CONTROL FUNDAMENTALSCONDE
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PNEUMATIC CONTROL FUNDAMENTALSThe o
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PNEUMATIC CONTROL FUNDAMENTALSContr
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PNEUMATIC CONTROL FUNDAMENTALSReset
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PNEUMATIC CONTROL FUNDAMENTALSActua
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PNEUMATIC CONTROL FUNDAMENTALSFigur
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PNEUMATIC CONTROL FUNDAMENTALSHIGH-
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PNEUMATIC CONTROL FUNDAMENTALSFigur
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PNEUMATIC CONTROL FUNDAMENTALSMMBTE
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PNEUMATIC CONTROL FUNDAMENTALS— T
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PNEUMATIC CONTROL FUNDAMENTALSCHANG
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PNEUMATIC CONTROL FUNDAMENTALSPNEUM
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PNEUMATIC CONTROL FUNDAMENTALSAny t
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PNEUMATIC CONTROL FUNDAMENTALSRETUR
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ELECTRIC CONTROL FUNDAMENTALSElectr
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ELECTRIC CONTROL FUNDAMENTALSINTROD
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ELECTRIC CONTROL FUNDAMENTALSDamper
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ELECTRIC CONTROL FUNDAMENTALSCONTRO
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ELECTRIC CONTROL FUNDAMENTALSSERIES
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ELECTRIC CONTROL FUNDAMENTALSWhen t
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ELECTRIC CONTROL FUNDAMENTALSDPDTSW
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ELECTRIC CONTROL FUNDAMENTALSOPERAT
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ELECTRONIC CONTROL FUNDAMENTALSElec
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ELECTRONIC CONTROL FUNDAMENTALSElec
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ELECTRONIC CONTROL FUNDAMENTALSSENS
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ELECTRONIC CONTROL FUNDAMENTALSTher
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ELECTRONIC CONTROL FUNDAMENTALSPOLY
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ELECTRONIC CONTROL FUNDAMENTALSELEC
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MICROPROCESSOR-BASED/DDC FUNDAMENTA
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INDOOR AIR QUALITY FUNDAMENTALSIndo
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INDOOR AIR QUALITY FUNDAMENTALSINTR
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INDOOR AIR QUALITY FUNDAMENTALSSick
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INDOOR AIR QUALITY FUNDAMENTALSTabl
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INDOOR AIR QUALITY FUNDAMENTALSHEAL
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INDOOR AIR QUALITY FUNDAMENTALSActi
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INDOOR AIR QUALITY FUNDAMENTALSVENT
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INDOOR AIR QUALITY FUNDAMENTALSEnvi
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INDOOR AIR QUALITY FUNDAMENTALSFLOW
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INDOOR AIR QUALITY FUNDAMENTALSROOF
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INDOOR AIR QUALITY FUNDAMENTALSFigu
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SMOKE MANAGEMENT FUNDAMENTALSSmoke
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SMOKE MANAGEMENT FUNDAMENTALSSmoke
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SMOKE MANAGEMENT FUNDAMENTALSDESIGN
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SMOKE MANAGEMENT FUNDAMENTALSHVACHV
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SMOKE MANAGEMENT FUNDAMENTALSALARMD
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SMOKE MANAGEMENT FUNDAMENTALS4. Sys
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BUILDING MANAGEMENT SYSTEM FUNDAMEN
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SMOKE MANAGEMENT FUNDAMENTALSCONTRO
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AIR HANDLING SYSTEM CONTROL APPLICA
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05.0AIR HANDLING SYSTEM CONTROL APP
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BUILDING AIRFLOW SYSTEM CONTROL APP
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CHILLER, BOILER, AND DISTRIBUTION S
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Page 437 and 438: VALVE SELECTION AND SIZINGValve Sel
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VALVE SELECTION AND SIZINGb. The pr
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VALVE SELECTION AND SIZINGCASE A: 3
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VALVE SELECTION AND SIZINGSTEAM VAL
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DAMPER SELECTION AND SIZINGDamper S
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DAMPER SELECTION AND SIZINGINTRODUC
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DAMPER SELECTION AND SIZINGBLADEEDG
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DAMPER SELECTION AND SIZINGMULTIPLE
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DAMPER SELECTION AND SIZINGLINKAGEA
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DAMPER SELECTION AND SIZINGtwist on
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DAMPER SELECTION AND SIZINGJACKSHAF
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DAMPER SELECTION AND SIZING100CHARA
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DAMPER SELECTION AND SIZINGA damper
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DAMPER SELECTION AND SIZINGStep1 No
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GENERAL ENGINEERING DATAGeneral Eng
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GENERAL ENGINEERING DATAWEIGHT/MASS
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GENERAL ENGINEERING DATATable 8. Ce
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GENERAL ENGINEERING DATAPOWERExisti
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GENERAL ENGINEERING DATAELECTRICAL
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GENERAL ENGINEERING DATAELECTRIC MO
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GENERAL ENGINEERING DATAAIRFLOW DAT
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GENERAL ENGINEERING DATAMOISTURE CO
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GENERAL ENGINEERING DATARELATIVE HU
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INDEXINDEXENGINEERING MANUAL OF AUT
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INDEXASHRAE Psychrometric Charts 53
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INDEXFan ControlOn-Off 317Two-Speed
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INDEXFlame SafeguardControl 330Inst
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INDEXOperator interface 167Optimum
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INDEXSeries 60Actuators 103, 106Con
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INDEXValve FlowCharacteristics 376,
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NOTESINDEXENGINEERING MANUAL OF AUT
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INDEXNOTESENGINEERING MANUAL OF AUT
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INDEXNOTESENGINEERING MANUAL OF AUT
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