applications guide - kmc controls · csc-3000 series pneumatic vav reset volume controllers 1...

CSC-3000 Series Pneumatic VAV Reset Volume Controllers 1 Applications Guide, Rev G

Applications Guide

General Information ..................................................................................................... 2CSC-3000 Series Overview ............................................................................................................................................2

Mounting .......................................................................................................................................................................2

More Information ..........................................................................................................................................................2

Connections ..................................................................................................................................................................3

Adjustments and Calibration .........................................................................................................................................4

Damper Action ........................................................................................................................................................4

Determining the Type of Reset ................................................................................................................................4

Adjusting Minimums and Maximums ......................................................................................................................4

DIRECT Reset Minimum and Maximum ..................................................................................................................4

REVERSE Reset Minimum and Maximum ................................................................................................................5

Reset Start Point ......................................................................................................................................................6

Reset Span ...............................................................................................................................................................6

Troubleshooting .............................................................................................................................................................7

Maintenance ..................................................................................................................................................................7

Important Notices .........................................................................................................................................................7

Magnehelic Gauge to Airflow Rate Chart ......................................................................................................................8

Replacement Cross-References ......................................................................................................................................9

Applications ................................................................................................................ 10Cooling ........................................................................................................................................................................10

Cooling with Heating Valve .........................................................................................................................................11

Cooling with Heating P-E Switch .................................................................................................................................12

Dual Duct ....................................................................................................................................................................13

Dual Duct, Constant Volume .......................................................................................................................................14

Index ........................................................................................................................... 15

*NOTE: ThisApplicationGuidedoesnotapply(completely)totheCSC-3014ortheCSC-3501/3505.Seetheirseparatedatasheetsandinstallationguides.

Pneumatic VAV Reset Volume ControllersCSC-3000 Series*


MountingTheCSC-3000Seriesarepositionsensitive.They must be mounted and calibrated in either the horizontal or vertical plane.

1. Asneartotheflowsensorpickupasisfeasible,connectthemountingbrackettothemountingsurfacewithtwoself-threadingscrewsinthetwo3/16"(5mm)mountingholes.Besuretoleaveenoughroomtomakeconnections.

2. Insertthecontroller,facedown,up,rightorleft.Thecontrollermustbeinstalledandadjustedinthesameplaneorreadjustmentwillbenecessary.

NOTE: Thesecontrollersareusedonsingleanddualductapplications.Whenworkingondualductapplications,itmaybenecessarytoworkononeductatatime.

NOTE: Anysequencingwithothercontrollers,valves,orpneumatic-electricrelaysmustbedonewiththecontroller’sresetrange,NOTtheactuator’sspringrange.

General InformationCSC-3000 Series OverviewTheseCSC-3000seriesresetvolumecontrollersaredesignedforuseonheatingorcoolingsystemswith(normallyopenornormallyclosed)VAVterminalunitsand(directorreverseacting)thermostats.

Theyaresub-masterairvelocitycontrollers.Eachisequippedwithseparateadjustmentknobsformini-mumandmaximumairflowsetpoints.Modelsareavailablewithvariousresetstartpoints.Amastercontroller,typicallyaroomthermostat,resetstheCSC-3000betweentheminimumandmaximumvelocitysetpoints.

TheuniversaldesignoftheCSC-3000seriesisin-tendedforneworreplacementapplicationsthatcallfordirectorreverseactingresetonnormallyopenornormallyclosedVAVterminalunits.

More InformationForspecifications,seetheCSC-3000 Series Data Sheet.

This Application Guide does not apply (complete-ly) to the CSC-3014 (designed to work with CTC-2100 Thermostats) or the CSC-3501/3505 (Linear Volume Reset Controllers).Seetheirseparatedatasheetsandinstallationguides.

For adjusting start point and span (upper and lower knobs) review the respective sections

All adjustments are CCW to increase

All dimensions are in inches (mm).

http://www.kmccontrols.com/ds/CSC-3011-10

http://www.kmccontrols.com/ds/CSC-3011-10


ConnectionsForallmodelsoftheCSC-3000series,use1/4"(5mm)O.D.“FR”tubingonthefollowingpush-onfittings:

1. Connecttheclean,dry,oil-freemainairsupplytoPort“M”(15to30psi).

2. ConnectthedamperactuatortoPort“B.”3. ConnectthethermostatoutputtoPort“T.”4. Connectthehigh(“total”)pressuretapontheairflowsensortoPort“H.”

5. Connectthelow(“static”)pressuretapontheairflowsensortoPort“L.”

6. Checkforproperconnections.Make sure all tubes are snug on their fittings.Ifloose,trimtheendofthetubingandreconnectittoensuretherearenoleaks.

NOTE: Overtime,thetubemaystretchordevelopmicrocracks.Trimtheendoftubebacktoundamagedmaterialandreconnect.Replacethetubingifitisbrittleordiscolored.

CAUTIONPneumatic devices must be supplied with clean, dry control air. Any other medium (e.g., oil or moisture contamination) will cause the device to fail.

NOTE: Youcaneasilytestforleakswithasqueezebulbtoensuretherearenoleaksattheactuatordiaphragmorfittings.

7. Useaflowhoodor“tee”aMagnehelic®(orequivalent)differentialpressuregaugebetweenthecontrollerandthe∆Ppick-uptodetermineairflowrates.

Typical CSC-3011 Application and Connections

NOTE: TheseinstructionsdonotapplytotheCSC-3014ortheCSC-3501/3505.

Magnehelic gauge and 0–30 psi gauge in illustration added for checkout and calibration purposes

CAUTIONTo prevent damage to the gauge, do NOT connect a Magnehelic gauge designed to measure an air flow sensor’s differential pressure (e.g., 0–0.5 wc) to the main air pressure (approximately 20 psi or 554 wc)!


Adjustments and CalibrationNOTE: DoNOTadjustresetstartpointandreset

span(upper and lower knobs)withoutthoroughlyreviewingtherelevantsections.

Damper Action

Thedamperactionisfactory-setatNormallyOpen(N.O.).TochangetoNormallyClosed(N.C.),per-formthefollowingsteps:

1. Loosenthedamperselectionscrew.2. Turntheselectiondialclockwiseuntilthe“NC”arrowalignswiththe“DAMPER”arrow.

NOTE: Accuracy in the alignment of the arrows is very important. Make this adjustment as exact as possible.

3. Tightentheselectionscrew.Be sure the screw is tight(2to4in-lbs.oftorque),but if overtightened, the plastic will strip out.

DIRECT Reset Minimum and Maximum

Determining the Type of Reset

ThefollowingtableshowswhenDirectResetorReverseResetisrequired.DeterminetheresettypebasedonthetemperatureoftheprimaryairenteringtheVAVboxandwhetherthethermostatinthespaceisdirectorreverseacting.

Adjusting Minimums and Maximums

Whenadjustingtheminimumandmaximumairflowsettings,theoutputrespondsslowlytochangesinthesetpoint.Waitfortheflowratetostabilizeaftermakinganadjustment(usually20to30seconds)be-foremakingfurtheradjustments.Also,ifthedamperpositionisallthewayclosedoropenwhenstartingthisstep,turntheadjustmentonefullturn,andthenwait20to30secondsforachangeintheflowread-ingoftheMagnehelicgauge.Ifnochangeoccursafterthistime,repeatuntiltheflowratechanges.

NOTE: Thedirectresetillustrationaboveassumesnorelaysareconnectedbetweenthethermostatand“T”port.

ForDirectReset(DAthermostatforcoolingorRAthermostatforheating),performthefollowingsteps:1a.OntheCSC-3000,disconnectthe“T”portandleaveitopen.Temporarilyplugthetubing(butdoNOTplugtheport).

1b.Alternately,insteadofremovingthetubingfromtheTport,(temporarily)removetheplugfromtheCSC-3000’s“G”port.

2. AdjusttheLOSTAT∆P(centerdial)oneadjustmentatatimeuntilthedesiredMinimum airflowisreadattheMagnehelicgaugeandisstable.

NOTE: Adjustthedialnomorethanaboutahalfrotationatatime.Aftermakinganyadjustment,waitapproximatelytensecondswhilewatchingformotioninthedampershaft.Ifnomotionoccurs,makethenextadjustment.

NOTE: IF the LO STAT ∆P Limit must be set at “0” (zero minimum),donotturntheLOSTAT∆Pknobfullyclockwise.Theknobwilladjustoneandone-halfturnsafterazerominimumisreached.TurningtheLOSTAT∆Pknobfullyclockwisewillresultinanegativeresetcondition.Thismeansthatwhenthecontrollerbeginstoresetattheresetstartpoint,itmustfirstovercomethenegativeadjustmentandwillnotbegintoresetfrom“0”untilahigherthermostatresetpressureisreached.Thisnegativeresetwillalsoreducetheeffectiverangeofthecontrollerbyreducingthelowendreset,narrowingtheresetspan.Ifazerominimumisrequired,adjusttheLOSTAT∆Pknobuntilthecontrollerjustbeginstocrackthedamperopen,andthenback-offone-quarterturnandverifyzeroairflow.(Thisistypically2-1/2knobrotationscounterclockwisefromthefullyclockwiseposition.)

Primary Air Thermostat Reset Type

CoolingDA DirectResetRA ReverseReset

HeatingDA ReverseResetRA DirectReset

Thermostat Pressure

Max. Airflow

Min. Airflow

Reset Start Point• 3 psig: CSC-3021/3026 • 8 psig: CSC-3011/3016/3017/3025 • 10 psig: CSC-3023

Reset Span (5 psig)

(Cooling w/ DA Thermstat orHeating w/ RA Thermostat)


REVERSE Reset Minimum and Maximum

NOTE: Thereverseresetillustrationaboveassumesnorelaysareconnectedbetweenthethermostatand“T”port.

ForReverseReset(RAthermostatforcoolingorDAthermostatforheating),performthefollowingsteps:

1a.OntheCSC-3000,disconnectthe“T”portandleaveitopen.Temporarilyplugthetubing(butdoNOTplugtheport).

1b.Alternately,insteadofremovingthetubingfromtheTport,(temporarily)removetheplugfromtheCSC-3000’s“G”port.

2. AdjusttheLOSTAT∆P(centerdial)oneadjustmentatatimeuntilthedesiredMaximum airflowisreadattheMagnehelicgaugeandisstable.

3a.Reconnectthethermostattubingtothe“T”port.3b.OrreinstalltheplugontheCSC-3000’s“G”port.(SeeStep1b.)

4. Adjustthermostattocallforfullairflow(15psiormoreat“T”port).

5. AdjusttheHISTAT∆P(dialonright)oneadjustment(1/4to1/2knobrotation)atatimeuntilthedesiredMaximum airflowisreadattheMagnehelicgaugeandisstable.

NOTE: Formoreaccuracy,temporarilyrelievethepressurebeforeeachdialadjustment.TemporarilypullofftheplugfromtheGport(relievingthethermostatairpressure),maketheestimatedamountofdialadjustment,reinstalltheplug,andwaitforthedamperpositiontostabilizebeforecheckingtheflow.

6. RepeatSteps1through5toverifythesettingstobecorrectandfinetuneifnecessary.

NOTE: Adjustthedialnomorethanaboutahalfrotationatatime.Aftermakinganyadjustment,waitapproximatelytensecondswhilewatchingformotioninthedampershaft.Ifnomotionoccurs,makethenextadjustment.

3a.Reconnectthethermostattubingtothe“T”port.3b.OrreinstalltheplugontheCSC-3000’s“G”port.(SeeStep1b.)

4. Adjustthethermostattocallforminimumairflow(15psiormoreat“T”port).

5. AdjusttheHISTAT∆P(dialontheright)oneadjustment(1/4to1/2knobrotation)atatimeuntilthedesiredMinimum airflowisreadattheMagnehelicgaugeandisstable.

NOTE: Formoreaccuracy,temporarilyrelievethepressurebeforeeachdialadjustment.PullofftheplugontheGport(relievingthethermostatairpressure),maketheestimatedamountofdialadjustment,reinstalltheplug,andwaitforthedamperpositiontostabilizebeforecheckingtheflow.

NOTE: IF the HI STAT ∆P Limit must be set at “0” (zero minimum),donotturntheHISTAT∆Pknobfullyclockwise.Theknobwilladjustpastwhereazerominimumisreached.TurningtheHISTAT∆Pknobfullyclockwisewillresultinanegativeresetcondition.Thismeansthatthecontrollerwillgettozerobeforegoingthroughthewholeresetspan.Ifazerominimumisrequired,adjusttheHISTAT∆Pknobuntilthecontrollerjustbeginstocrackthedamperopen,thenbackoffslightlyandverifyzeroairflow.

6. RepeatSteps1through5toverifythesettingstobecorrectandfinetuneifnecessary.

Thermostat Pressure

Max. Airflow

Min. Airflow

Reset Start Point• 3 psig: CSC-3021/3026 • 8 psig: CSC-3011/3016/3017/3025 • 10 psig: CSC-3023

Reset Span (5 psig)

(Cooling w/ RA Thermstat orHeating w/ DA Thermostat)


Reset Span

NOTE: In almost all applications, the reset span never needs adjusting. Do not change the default 5 psi unless really necessary.

Theresetspanisthethermostat’seffectiveresetrangeforthecontroller.Aresetspanof5psimeansthatitwilltakea5psipressurechangemeasuredfromtheresetstartpointtoresettheflowrateoftheVAVbox.

3 psig 8 psig 13 psig

Thermostat Pressure

Max. Airflow

Min. Airflow

Reset Start Point (8 psig)

Reset Span (5 psig)

NOTE: Resetspanisthepressurechangeat“T”abovetheresetstartpointthatcausestheflowsetpointtomovefromoneextremetotheother.Inadirectresetapplication,theflowsetpointwillchangefromminimumtomaximumflowabovethestartpoint.Inareverseresetapplication,theresetwillchangefrommaximumtominimumflowabovethestartpoint.

TheCSC-3000seriesarefactorysetwitharesetspanof5psi.Thisisstandardinmostapplicationsanddoesnottypicallyrequireadjustment.Leavingthisadjustmentatthefactorysettingisrecommended.Ifnecessary,theresetspancanbeadjusted(between0and10psi).Iftheresetspanischanged,theminimumandmaximumflowsmayneedtobereadjusted.Toadjusttheresetspantoanothervalue,performthefollowingsteps:

1. Adjustthethermostattoahigherpressure,beyondworkingrange(20psiisbest).

2. Attachapressuregaugetothe“G”port(requires5/32"O.D.tubing).

3. Withasmallflat-bladescrewdriver,adjust(coun-terclockwisetoincrease;clockwisetodecrease)theresetspancontrol(atthebottomofthecon-troller)untilpressureatthe“G”portequalsthedesiredresetspanpressure.

3 psig 8 psig 13 psig

Thermostat Pressure

Max. Airflow

Min. Airflow

New Reset StartPoint (3 psig)

Old Reset StartPoint (8 psig)

(Reverse) Reset Start Point Adjusted from 8 to 3 psi

Reset Start Point

TheresetstartpointisthepressurefromthethermostatatwhichthecontrollerbeginstoresetfromtheLOSTATtotheHISTATsetting.ModelsoftheCSC-3000seriescomewithresetstartpointsfactory-setat3,8,or10psi.(Seethechartonthenextpage.)Thesearestandardinmostapplicationsandtypicallydonotrequireadjustment.Ifaresetstartpointisneededotherthanthedefaultsetting,allmodelsarefieldadjustablebetween0and10psi.(Iftheresetstartpointischanged,theresetspanmayneedtobeadjustedaswell.)Toadjusttheresetstartpoint,carryoutthefollowingsteps:

1. Putthethermostatpressureatthedesiredstartpointpressure(e.g.,3psi).

2. Removerubberplugatthe“G”portandreadpressureat“G”witha0–30psigauge(requires5/32"O.D.tubing).

3. Withasmallflat-bladescrewdriver,adjust(counterclockwisetoincrease;clockwisetodecrease)theresetstartpointcontrol(atthetopofthecontroller)untilthepressurereadat“G”portisjustbeginningtomoveoffzero(0)psi.

NOTE: Ifthecontrollerdoesnotrespondcorrectlyafteralladjustmentshavebeenmade,itmaybenecessarytocorrecttheresetspanadjustment.


TroubleshootingNOTE: The controller should be set according

to the specifications found on the manufacturer’s label on the VAV box.

NOTE: The CSC-3000 series are position sensitive. Be sure to mount the controller with the correct orientation. See Mounting on page 2. If the controller is calibrated in a position other than the final mounting position, the calibration (minimum and maximum flow limits) will be off.

NOTE: Thesecontrollersaretypicallyusedonsingle-ductapplicationsbutmaybefoundindual-ductapplications.(See,forexample,Dual Duct on page 13andDual Duct, Constant Volume on page 14.)Whenworkingondual-ductapplicationsitmaybenecessarytoworkononeductatatime.

Troubleshootingissuestoconsiderinclude:

• Isthereanadequatemainair(M)supply?

• Isthereadequateupstreamsystem(duct)air?

• Istheapplicationcorrectandpipedcorrectly?SeeConnections on page 3,Determining the Type of Reset on page 4,andApplications on page 10.

• Isthedamperaction(NC/NO)setcorrectly?Dothedamper’sandcontroller’sactionmatch?SeeDamper Action on page 4.

• Isthedamperbinding?Willtheactuatordrivethedamperfullopentofullclose?(Sufficientmainairisrequiredtoprovidetheactuatorwithenoughforcetooperatethedamper/linkage.)Istheactuatorleaking?(Evensmallleakscancausetheactuatortonotstroke.Youcantestforleakswithasqueezebulbtoensuretherearenoleaksattheactuatordiaphragmorfittings.)

• Doesthethermostatsendanadequatesignaltothecontroller?

• AreLOSTATandHISTATsetcorrectlyforthethermostataction?Whencycled,canthecontrol-lerrepeattheLOSTATandHISTATsettings?IftheLOSTATorHISTATmustbesetfor“0”wc,seethenotesaboutzero minimuminDIRECT Reset Minimum and Maximum on page 4orRE-VERSE Reset Minimum and Maximum on page 5.

MaintenanceNoroutinemaintenanceisrequired.Eachcompo-nentisdesignedandmanufacturedforreliabilityandperformance.Carefulinstallationandusewillensurelong-termdependability.

CAUTIONPneumatic devices must be supplied with clean, dry control air. Any other medium (e.g., oil or moisture contamination) will result in the device’s eventual failure.

• Istheairflowpickupproperlyplaced,anddoesitsendagooddifferentialpressuretothecontrol-ler?(SeeConnections on page 3.)Istheairflowsensordirtyordefective?(Disconnectthesensorfromthecontrollerbeforeattemptingtoblowthesensorclean!)

• Areresetstartandresetspansetcorrectly?SeeReset Start Point on page 6andReset Span on page 6.

Important NoticesTheKMClogoisaregisteredtrademarkofKMCControls,Inc.Allrightsreserved.Nopartofthispublicationmaybereproduced,transmitted,tran-scribed,storedinaretrievalsystem,ortranslatedintoanylanguageinanyformbyanymeanswith-outthewrittenpermissionofKMCControls,Inc.Thematerialinthisdocumentisforinformationpurposesonly.The contents and the product it de-scribes are subject to change without notice.KMCControls,Inc.makesnorepresentationsorwarran-tieswithrespecttothisdocument.InnoeventshallKMCControls,Inc.beliableforanydamages,directorincidental,arisingoutoforrelatedtotheuseofthisdocument.


Magnehelic Gauge to Airflow Rate Chart

VAV Airflow Rate by Duct Size

30 50 100 150 200 300 400 600 1000 1500 2000 3000 4000 6000 8000

4 inch R

ound

5 in

ch R

ound

6 in

ch R

ound

8 inch R

ound

14 inch O

val

12 inch R

ound

10 inch R

ound

16 inch O

val

18 inch O

val

20 in

ch O

val

.02

.03

.04

.05

.06

.07

.08

.09

.10

.15

.20

.25

.30

.40

.50

.80

.70

.60

1.0.90

CFM Flow Rate as read by sensor

Dif

fere

nti

al

Pre

ss

ure

(∆

P)

in I

nch

es w

.c.

NOTE: This chart is for illustration only! Do not use this chart to obtain your values.ItisNOTintendedforcalibrationofyourMinimumandMaximumadjustments.

ThisairflowchartisanexampleofthechartsusuallyaffixedtotheVAVbox.EachchartisspecificforthetypeofflowsensorlocatedintheinletsideoftheVAVbox.ReadthedifferentialpressureoftheMagnehelicgauge,followthelinehorizontallyuntilitcrossesthediagonalinletsizeofbox.Readstraightdownfromthisintersectiontodeterminetheflowrate.


Competitor Cross-Reference to KMC Universal CSC-3000 Series

KMC Controls

Invensys/Robertshaw/Barber-Colman

TAC/Staefa/UPC HoneywellJohnson Controls

Titus

CSC-3011

All Models of:R77 and R78 Series

PPR-9100 SeriesHYUR-2700 Series

VCV2100 Series (all Models)VCV2200 Series (all Models)

VCV2500-101*VCV2500-201*VCV2500-301*VCV2500-401*

CP980C**CP980D**CP980E**CP980F**

P-3800-1*P-3800-2*

CSC-3002CSC-3003

CSC-2000s***

CSC-3025

VCV2500-101 (on Trane VAV Units)VCV2500-201 (on Trane VAV Units)VCV2500-301 (on Trane VAV Units)VCV2500-401 (on Trane VAV Units)

P-3800-1 (on Trane VAV Units)

P-3800-2 (on Trane VAV Units)

CSC-3004CSC-3005

NOTE: After replacing the controller, adjustments and calibration will be necessary. *On Trane terminal units, use CSC-3025 instead. **For Honeywell CSP980, the existing velocity pressure flow pickup needs to be replace with KMC SSS-1000 series. ***See KMC CSC Cross-Reference to Universal CSC-3000 Series chart above. All Titus CSC-2000 Series controllers are the same as KMC CSC-2000 Series.

KMC CSC Cross-Reference to Universal CSC-3000 Series

“Universal” Replacement KMC Model Older KMC Model

CSC-3011

CSC-1001CSC-2001CSC-2003CSC-2007

CSC-2011 (Discontinued )CSC-2013 (Discontinued)CSC-3014 (Discontinued)*

CSC-3017**CSC-3501 (Discontinued)***

CSC-3021

CSC-2002CSC-2004CSC-2008

CSC-2012 (Discontinued)CSC-2014 (Discontinued)

CSC-3016

CSC-2009CSC-2015 (Discontinued)CSC-2017 (Discontinued)

CSC-3505 (Discontinued)***

CSC-3026CSC-2010CSC-2016CSC-2018

NOTE: All Titus CSC-2000s are the same as KMC CSC-2000s. *The CSC-3014 also requires a thermostat replacement, with no limits at the thermostat. **The CSC-3017 is identical to the CSC-3011, but it does not come with mounting bracket or KMC logo. ***No direct replacement if the Linear feature is required.

Replacement Cross-References

NOTE: Forcross-referencestocompetitive and OEM products,seetheKMC Master Cross-Reference.

http://www.kmccontrols.com/products/productdetail.aspx?partid=CSC-3011-10

http://www.kmccontrols.com/products/productdetail.aspx?partid=CSC-3011-10


Applications

DA Thermostat (NO or NC Damper)

RA Thermostat (NO or NC Damper)

Cooling

(TheseinstructionsdonotapplytotheCSC-3014ortheCSC-3501/3505.)

• LOSTAT=Min.Flow• HISTAT=Max.Flow• ResetRange=8to13psi

• LOSTAT=Max.Flow• HISTAT=Min.Flow• ResetRange=3to8psi


Cooling with Heating Valve

DA Thermostat, NO or NC Damper, and NO Hot Water Valve

RA Thermostat, NO or NC Damper, and NC Hot Water Valve

• LOSTAT=Min.Flow• HISTAT=Max.Flow• ResetRange=8to13psi

• HotWaterValve=NO• SpringRange=3to8psi


• HotWaterValve=NC• SpringRange=8to13psi


Cooling with Heating P-E Switch

DA Thermostat, NO or NC Damper, and NC Heating P-E Switch

• LOSTAT=Min.Flow• HISTAT=Max.Flow• ResetRange=8to13psiNCPE

Switches

• Stage2OnwithDecrease• Stage3OffwithIncrease


• Stage3OnwithDecrease

• Stage1OffwithIncrease


NOPESwitches

RA Thermostat, NO or NC Damper, and NO Heating P-E Switch



• Stage3OnwithDecrease

• Stage1OffwithIncrease


Dual Duct

Cold DeckCSC-3011-10• Damper=NC• LOSTAT=Min.Flow• HISTAT=Max.Flow• Reset=8to13psi

Hot DeckCSC-3021-10*• Damper=NO• LOSTAT=Max.Flow• HISTAT=Min.Flow• Reset=3to8psi

*OruseaCSC-3011-10andchangetheresetfrom8to3.SeeReset Start Point on page 6.


Dual Duct, Constant Volume

Cold Deck/Common DischargeCSC-3011-10• Damper=NC• LOSTAT=ConstantVolumeFlow• Reset=8to13psi

Hot DeckCSC-3011-10• Damper=NO• LOSTAT=Min.Flow• HISTAT=Max.Flow• Reset=13to8psi

CSC-3000 Series Pneumatic VAV Reset Volume Controllers 15 Applications Guide, Rev G© 2013 KMC Controls, Inc. AN-1205B-RevG

KMC Controls, Inc.19476IndustrialDriveNewParis,IN46553

[email protected]

A

Adjustments 4Airflow Rate Chart 8Applications 10

C

Calibration 4Cold Deck 13, 14Common Discharge 14Connections 3Cooling 10Cooling with Heating P-E Switch 12Cooling with Heating Valve 11Cross-References 9CSC-3011 9, 13, 14CSC-3014 2CSC-3016 9CSC-3021 9, 13CSC-3025 9CSC-3026 9CSC-3501/3505 2

D

Damper Action 4Direct Reset 4Dual Duct 13Dual Duct, Constant Volume 14

G

G Port 4

Index

H

HI STAT 5, 6Hot Deck 13, 14

I

Important Notices 7

L

LO STAT 4, 5, 6

M

Magnehelic Gauge 8Maintenance 7Minimums and Maximums 4Mounting 2

O

Overview 2

R

Replacement Cross-References 9Reset Span 6Reset Start Point 6Reset, Types 4Reverse Reset 5

T

Troubleshooting 7

applications guide - kmc controls · csc-3000 series pneumatic vav reset volume controllers 1...

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