Comdronic AC6 User manual

www.comdronic.co.uk

AC6OperatingInstructions
Contents

HealthandSafety1

StatementofConformity1

MeasurementRange&Accuracy1

ContactUs1

DescriptionofAC62

ConnectionProcedure3

DisconnectionProcedure3

MenuMap4

DisplayMenu5

MainMenu8

UnitsMenu11

DampingMenu12

AdvancedMenu13

Quick‐ValveStoringFunction15


Appendices

Glycol/WaterSpecificGravityChart   A1

RecommendedUserMaintenanceProcedures  A2








www.comdronic.co.uk

























































www.comdronic.co.uk
HealthandSafety
Comdronic Ltd takes every reasonableprecaution to ensure that AC6Electronic Commissioning Meters are
designed,constructed,calibratedandtestedforsafeandtrouble‐freeoperationwhenusedinaccordancewith
theseoperatinginstructions.

It is the user’s responsibility to be aware of the general hazards associated with the systems being
commissioned(e.g.highpressures;high/lowtemperatures;thepresenceofflushing/cleaning/antifreeze
agents; etc.) and to use appropriate personal protective equipment / clothing for the hazards potentially
present.


StatementofConformity
This is to certify that the Comdronic AC6 Electronic Commissioning Meter is manufactured in the UK and
conformstothepublishedspecification.ItisCEMarkedinaccordancewiththerelevantEUlegislation.


MeasurementRange&Accuracy


Model: AC6‐SP
(STANDARD‐PRESSURE)
AC6‐HP
(HIGH‐PRESSURE)
Accuracy
(%ofreading):
+/‐1%ofreadingor+/‐0.10kPa
(whicheverisgreater)
+/‐1%ofreadingor+/‐0.20kPa
(whicheverisgreater)
MaxAllowable
StaticPressure: 10bar 20bar
Measurement
Range: 0.5kPato200kPa 1.0kPato600kPa

Factory calibration is carried out, in controlled conditions, using reference equipment which has been
independentlycalibratedtoUKASstandards.

Generally,itisrecommendedthatAC6handsetsareservicedandcalibratedannually–please‘ContactUs’for
further information. However, this is not a fixed period and shorter service intervals may be necessary for
extremelyhigh‐usemetersorformeterswhichare regularlyusedonverydirtysystemsoronsystems that
containhighconcentrationsofcleaningagents/treatments.

Betweenservices,therearesomesimplemaintenanceprocedureswhichcanbe performedtohelp prolong
theaccuracyandperformanceoftheAC6–pleaserefertoAppendixIIforfurtherinformation.


ContactUs
Forallsales,technicalortroubleshootingenquiries:

Email: [email protected]
Tel:  +44(0)1473715589
Address: Unit7AlphaTerrace,WestRoad,Ipswich,Suffolk,IP39FD,UK





1

www.comdronic.co.uk
DescriptionofAC6 

Press&holdtheMENUbuttontoswitchtheAC6‘ON’.





















































MENU
?ZERO
Comdronic
- - + +
ConnecttheBLUE
connectiontube
tothisconnector.
Securingring.Usethe
lanyardsuppliedtosuspend
theAC6fromadjacent
pipework(orsimilar)while
takingreadings.
Presstosetazero
datumbeforetakinga
measurement(see
opposite).
Presstoentermenu
screens.
PressMENUagainfor
languageoptions.
Usethe▲ ► ▼ ◄buttons
formenunavigationandto
enternumericaldata.
Presstoaccept
menuselections
andscreenentries.
ConnecttheRED
connectiontube
tothisconnector.
Internalstrainersprotectthe
sensor‐unitfromsmalldirt
particles.Theseareserviceparts.
Note:blockedstrainerswillslow
performanceandreduce
accuracy.
Equalisingvalve.
Presstocancelanentryorto
returntoapreviousscreen.
AlsousetoswitchtheAC6 ‘OFF’.
2
9VBattery
1xAlkaline9VPP3battery.
Batteryaccessatrear.
Typicaleffectiveoperating
time=upto20hours.
ENGLISH
ESPANOL
FRANCAIS
ITALIANO
NORSK
SVENSKA
SelectLanguage
Usethe▲▼ buttonstoselectalanguage.
Presstoaccept.
Key
Throughouttheseinstructions,thereare
twoabbreviationsusedfor‘differential
pressure’asfollows:
Δpisusedinthebodytext.
DPisusedinthescreenimages.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.

www.comdronic.co.uk
TheAC6handsetissuppliedinalightweightcarrycasewiththefollowingaccessories:

Aremovablerubberprotector.
Apairofconnectiontubes,completewithmanually‐operatedisolationvalves.
Apairofangle‐patternBinder‐styleconnectionadaptorswith3.3mmdiameterneedles.
Apairofstraight‐patternBinder‐styleconnectionadaptorswith2.0mmdiameterneedles.
Asetofhexkeys(3mm,4mm,5mm,6mm&8mm)andascrewdriver.

Alanyardtosuspendthehandsetfrompipeworkwhilstinuse.
Astrainermaintenancekit.
Asparebattery.
OperatingInstructions,aQuick‐StartGuideandaFactoryCalibrationCertificate. 


ConnectionProcedure
Note:eachconnectiontubeisfittedwithanisolatingvalveanditisamatterofuser‐preferencewhether
thetubesareusedwiththeisolatingvalvesadjacenttothe
AC6 or,alternatively,adjacenttothesubject
measuringvalve/device.


1. Selectthecorrectconnectionadaptorsforthevalve/devicebeingmeasuredandattachthemto
theconnectiontubes.

2.
Ensurethatbothisolatingvalvesontheconnectiontubesareinthe CLOSED position. 
3. AttachtheconnectionadaptorontheREDconnectiontubetothehigh‐pressure(upstream)testpoint
onthesubjectmeasuringvalve/device.
4. AttachtheconnectionadaptorontheBLUEconnectiontubetothelow‐pressure(downstream)test
pointonthesubjectmeasuringvalve/device.
5. EnsurethattheequalisingvalveontheAC6isOPEN.
6. AttachthefreeendsoftheREDandBLUEconnectiontubestothecolour‐codedconnectionpointson
theAC6.
7. OPENtheisolatingvalvesontheconnectiontubestoallowthelinefluidtopurgeanyairfrominside
thetubes.*
8. CLOSEtheisolatingvalvesontheconnectiontubes.
9. FindasafeandstaticpositionfortheAC6.**
10. SwitchtheAC6‘ON’andpresstheZERObuttontosetthedatumatzero.***
11. OPENtheisolatingvalvesontheconnectiontubesandCLOSEtheequalisingvalveontheAC6.
12. TheAC6willnowbereadingΔp.

* Ifthe Δp acrossthevalve/deviceislow,thepurgingprocesswillbeslowduetotheinternalresistance
ofthe
AC6 .

** The AC6  is very sensitive and readings will be affected if the position of the handset is moved or
adjustedafter a datum hasbeenset.Alanyardisprovidedand can beusedtosuspend the AC6 from
adjacentpipework,asappropriate.

***IftheAC6isbeingsubjectedtoanextremechangeoftemperatureatthispoint,thedatummaydriftfrom
zero as the internal temperature of the meter changes and, in these circumstances, it will be necessary to
repeatthisstepuntiltheinternaltemperaturehasstabilisedandazerodatumismaintained.

DisconnectionProcedure

1. OPENtheequalisingvalveontheAC6.
2. CLOSEbothisolatingvalvesontheconnectiontubes.
3. DisconnectthetubesfromboththeAC6andthevalve/device.


3

www.comdronic.co.uk
MenuMap
TheAC6hasfivemenusforeaseofuse:

MAIN
MENU
►UNITS
MENU
►DISPLAY
MENU
►DAMPING
MENU
►ADVANCED
MENU
◄◄◄◄
SelectA
Valve 
SelectDP
Units 
DPAnd
Flow 
Change
Update
Time FlowAlerts
▼▲▼▲▼▲▼▲▼▲
Valve
Setting 
SelectFlow
Units  Advanced 
Change
Sample
Time 
Backlight
Timer
▼▲▼▲▼▲
Specific
Gravity 
DPOnly 
Auto‐off
Timer
▼▲▼▲▼▲
Design
Flow 
FlowOnly 
On‐Screen
SizeUnits
▼▲▼▲▼▲
Target
Flow% 
About  PipeID
▼▲
ChangeKvs 

Note: menu options shown in red will require numerical data to be entered and this is achieved using the
buttonsonthekeypad.Thedefaultstartingdigitisalwayszero–thenusethe▲▼buttonsto changethe
value.Usethe►buttontoaddadigitandthe◄buttontoremoveadigit.Ifadecimalpointisrequired,press
the▼buttonwhenthezerodigitisshowing.Toenteranegativenumber,presstheZERObuttonbeforeany
numberisadded.ThefollowingexampleshowshowauserwouldsetaDesignFlowof1.05:
MENUenterstheMainMenu
▼▼▼movesthecursordowntotheDesignFlowoption
acceptstheDesignFlowoption
▲changesthevalueofthefirstcolumnto1
►selectsthenextcolumn
▼selectsadecimalpoint
►selectsthenextcolumn
►selectsthenextcolumn
▲▲▲▲▲changesthedigitto5
acceptstheon‐screenvalueof1.05
returnstothechosendisplayscreen



4

www.comdronic.co.uk
DisplayMenu
TherearefourdifferentdisplayformatsavailablefortheAC6.Themostappropriateformatwilldependonthe
typeofvalve/devicebeingmeasuredandthecommissioningmethodbeingapplied.Thefourdisplayformats
aredescribedbelowbut,first,itisimportanttoexplainsomeautomaticalerts
whichmayappearonanyof
thesescreensasandwhencertaincircumstancesexistasfollows:

















*The pressure sensor within the AC6 ceases to compensate for temperature at temperatures above 50°C.
However,aslongaspurgetimesarekepttoaminimum,thetemperature of the fluid within the meter is
usuallyverymuchclosertoambientthanthetemperatureofthelinefluid.Asaconsequence,itisverynormal
fortheAC6tobeusedveryeffectivelyonlowtemperaturehotwatersystems.


The DP And Flow Display is suitable for most general commissioning purposes. Fig. 1 shows an example of
displayed data when a fixed orifice valve has been selected and fig. 2 shows an example of displayed data
whenanautomaticbalancingvalvehasbeenselected.


Fig.1




















5
Schematicofthe
selectedvalve.
Kvsofthe
selectedvalve. Detailsofthe
selectedvalve.
DerivedFlow.
CalculatedbytheAC6
usingthemeasuredΔp
andtheKvs.
MeasuredΔp.
5.30
CraneFixedD93115mm
KPa
l
/
s
0.141
Kvs
2.20
ZERODP SG TEMPHIGH
Thissymbolwillshowwhenthe
remainingbatterypowerdrops
below8.0volts.Thisisfor
INFORMATIONONLYasthereis
stillplentyofrun‐timeavailable.
TheZERObuttonwillneedtobe
pressedtosetadatum(see
ConnectionProcedureonpage3)
beforereadingscanbetaken.
SpecificGravityisnot set
to1.0,soreadingsare
currentlybeingauto‐
correctedforSG.
Thetemperatureatthe
sensoristoohighfor
readingstobetemperature‐
compensated.*
Remainingbatterypower
hasdroppedbelow6.5volts
andistoolowfortheAC6
tofunction.Action:FITA
NEWBATTERY.
Thissymbolwillshowwhenthe
remainingbatterypowerdrops
below7.5volts.Action:ensure
thatareplacementbatteryis
on‐hand.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.

www.comdronic.co.uk
Fig.2











*IfthemeasuredΔpreachesthedesignΔpfortheselectedvalve,theflowstatusmessagewillbeFLOWOK.
However,ifthedesignΔpisnotmettheflowstatusmessagewillbeLOWFLOW.



The Advanced Display can show more complex commissioning data and it may be preferred to the DP And
FlowDisplayifautomaticbalancingvalvesarebeingmeasuredorifasystemofproportionalbalancingisbeing
adopted.Fig.3showsanexampleofdisplayeddatawhenavariableorificevalvehasbeenselectedandfig.4
shows an example of displayed data when an externally adjustable automatic balancing valve has been
selected.

Fig.3




















**Theseareiterativeprocessesduetotheunknownvalveauthorityinthecircuitandso2‐3attemptsmaybe
requiredtoachievethedesiredreading.Pleasealsonotethatinconjunctionwithpressingthe◄or►button
ontheAC6,thephysicalhandwheelsettingofthevalvewillalsoneedtobechangedtomatchthenewvalue.







6
Currentcartridge
setting.
Flowstatus
message.*Detailsofthe
selectedvalve.
DerivedFlow.
Measured
Δ
p.
20.48
FlowConGreenGreen.015‐25mm
KPa
l
/
s
0.210
FLOW
OK
l
/
s
0.210
5.00
DesignFlowfor
thisvalveatthis
setting.
Pressthe▲
buttontochange
valvesetting.
Current
handwheelsetting.
Kvsoftheselected
valveatthecurrent
handwheelsetting.
DerivedFlowasa%ofthe
TargetFlow.IfnoTarget
Flowhasbeenentered,
“‐‐‐“isdisplayed.
DerivedFlow.
MeasuredΔp.
5.30
CraneVariableD930/DM93015mm
KPa
l
/
s
0.256
DESIGN
4.00Kvs
4.00
101%
103% TARGET
3.82 3.95
Pressthe▲buttontoMANUALLY
changethehandwheelsettingthat
theAC6isusing.
DerivedFlowasa%ofthe
DesignFlow.IfnoDesign
Flowhasbeenentered,
“‐‐‐“isdisplayed.
Predictivehandwheel
settingtoachievethe
DesignFlow.
Usethe◄buttonto
AUTOMATICALLY
changethe‘Current
HandwheelSetting’
beingusedbytheAC6
tothisvalue.**
Predictivehandwheel
settingtoachievethe
TargetFlow.
Usethe►buttonto
AUTOMATICALLY
changethe‘Current
HandwheelSetting’
beingusedbytheAC6
tothisvalue.**
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.

www.comdronic.co.uk
Fig.4


















*The Design Flow for any automatic balancing valve will be achieved if the Δp across the valve reaches (or
exceeds)thedesignvalue.
IftheDesign Δp ismet,thedisplayedmessagewillbe FLOWOK .  IftheDesign Δp 
isnotmet,thedisplayedmessagewillbe
LOWFLOW . 

TheDPOnlyDisplay(showninfig.5)isthesimplestoptionavailableandmaybepreferredwhentheAC6is
beingusedasasimplemanometer.

Fig.5











The Flow Only Display (shown in fig. 6) would normally only be the preferred display screen when fluid
velocitiesarebeingmeasuredforthepurposesofsystemflushing.

Fig.6










7
Uparrowindicates
thattheΔpmustbe
increasedtoachieve
theDesignFlow.
Approx.
actualflow. DesignFlowforthis
valveatthissetting.
Δprequiredto
achieveDesignFlow. Currentvalve
setting.
FlowConGreenGreen.015‐25mm
LOW

FLOW
0.210 l
/
s
5.00
14.50KPa
0.200 l
/
s
16.00
1.50
Downarrowindicates
thattheΔpis
unnecessarilyhigh.
Measured
Δ
p.
DifferencebetweenMeasured
Δ
pandDesign
Δ
p.
Flowstatus
message.*
Usethe▲buttontoedit
the‘CurrentValveSetting’.
(▲notshownifvalveisafixedsettingtype).
Chevronsintheinlet
pipeindicatethatthe
flowisgreaterthanzero.
Chevronswillshowin
theoutletpipewhen
DesignFlowisachieved.
|KPa
4.27 MeasuredΔp.
Unitsofmeasure.
Kvs=2.3|m/s
1.37 CalculatedFluid
Velocity.
Unitsofmeasure.
16.1mm
InternalPipeDiameter
beingusedtocalculate
thefluidvelocity.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.

www.comdronic.co.uk
The‘About’menuoption(showninfig.7)givestheuniqueserialnumberoftheAC6(pleasequotethisinany
correspondencewithComdronic)plustheinstalledfirmwareversion.

Fig.7















MainMenu
The Main Menu is concerned with the various selections / parametersthatausermaywishtoenter
dependingonthevalve/devicebeingmeasuredandthecommissioningtechniquesbeingutilised.

The performance characteristics of over 5,000 valves – from 70+manufacturers/brands–arepre‐
programmedintotheAC6andthisdataisautomaticallyupdatedwheneveranAC6isservicedbyComdronic.
Alternatively,itispossibleforuserstoremotelyupdatethevalvedatabaseontheirAC6,usinglatestdatafiles
whichareavailablefromComdronic.Please‘ContactUs’forfurtherinformation.

Note: w
hilst every effort is made to ensure that  storedvalvedataiscorrect,valvemanufacturers
invariablyreservetherightto
 modifytheirproducts,withoutnotice,andsoComdroniccannotbeheld 
responsibleforanyinaccuraciesor omissions .

Fig.8













Make selections for all four parameters (i.e. Manufacturer, Type, Fig. No.&Size) before pressing the 
buttontoacceptthem.




8
CRANE
Variable
D902
15mm
Manufacturer/Brand.
ValveType
e.g.Fixed,Variable,
PICV,etc. ValveFig.No.
ValveSize.
Usethe◄►buttons
toscrollthroughthe
availableoptionsfor
eachparameter.
Usethe▲▼buttons
toselectaparameter.
Firmwareversion.
Uniqueserialnumber. AC6‐01236.03.200
COMDRONICAC6
www.comdronic.co.uk
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.

www.comdronic.co.uk

Whenvariableorificevalvesoradjustableautomaticbalancingvalvesarebeingmeasured,thehandwheel
position/cartridgesettingmustbeenteredsothatthecorrect flow data is used forthe
 derivation of
flow.


Fig.9













Oncethenewvalueiscorrectonthescreen,pressthebuttontoacceptit.Or,pressthebuttontoexit
thescreenandretainthecurrentsetting.

*Theminimumhandwheelpositionshownensuresthatthevalvemaintainsreasonableaccuracy.

ThismenuoptionallowstheusertoentertheSGofthelinefluid. Typically, this would be necessary when
glycol(orsimilar)ispresentinthesystem.PleaserefertoAppendixIforfurtherinformation.

Fig.10












Oncethenewvalueiscorrectonthescreen,pressthebuttontoacceptit.Or,pressthebuttontoexit
thescreenandretainthecurrentsetting.

Note:whileSGissettoavalueotherthan1.0,“SG”willshowatthetopofthechosendisplayscreenasa
remindertotheuserthatreadingsarebeingsubjectedtoacorrection.Itisstronglyrecommendedthat
usersregularlycheckthatthesetvalueforSGisappropriateforthesystembeingcommissioned.








9
=4
Usethe►button
toaddadigit.
Currentsetting.
Min=1Max=4
2.4
Usethe◄button
toremoveadigit.
Usethe▲▼buttons
toincreaseor
decreaseavalue.
Min.*&Max.
usablesettingsfor
theselectedvalve.
=1
Usethe►button
toaddadigit.
Currentsetting.
EnterSG
1.017
Usethe◄button
toremoveadigit.
Usethe▲▼buttons
toincreaseor
decreaseavalue.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.

www.comdronic.co.uk
TheDesign Flowfortheselected valvecan beentered/editedin thisscreen. Whenavalue isentered, the
derivedflowwillbecalculatedasapercentageoftheDesignFlowandthiswillbedisplayedontheAdvanced
DisplayintheDesignFlowbox.

Fig.11












Oncethenewvalueiscorrectonthescreen,pressthebuttontoacceptit.Or,pressthebuttontoexit
thescreenandretainthecurrentsetting.

TheTargetFlow%fortheselectedvalvecanbeentered/editedinthisscreen.Whenavalueisentered,itwill
bedisplayedontheAdvancedDisplayintheTargetFlowbox.TargetFlowmustbeenteredasapercentage
andisgenerallyrequiredwhencarryingoutadvancedproportionalbalancing.Typically,thevalueusedwillbe
the same as the calculated Design Flow percentage on the index circuit. Balancing to 100% target on
subsequentvalveswillensurethatvalvesadjacenttotheindexvalveare‘balanced’.

Fig.12












Oncethenewvalueiscorrectonthescreen,pressthebuttontoacceptit.Or,pressthebuttontoexit
thescreenandretainthecurrentsetting.












10
=10.2l/s
Usethe►button
toaddadigit.
Currentsetting.
EnterDesignFlow
10.8
Usethe◄button
toremoveadigit.
Usethe▲▼buttons
toincreaseor
decreaseavalue.
=94%
Usethe►button
toaddadigit.
Currentsetting.
EnterTargetFlow%
97
Usethe◄button
toremoveadigit.
Usethe▲▼buttons
toincreaseor
decreaseavalue.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.

www.comdronic.co.uk
Ifthevalve/deviceisnotlistedintheAC6’sdatabase,thismenuoptionenablestheusertomanuallyentera
KvsvaluesothataderivedflowcanstillbecalculatedbytheAC6.

Fig.13











Oncethenewvalueiscorrectonthescreen,pressthebuttontoacceptit.Or,pressthebuttontoexit
thescreenandretainthecurrentsetting.


UnitsMenu
Default=kPa
AvailableoptionsarekPa,psi,bar,cmH2O, IWGA(incheswatergauge),FtHD(feethead)orPa. 


Fig.14











Default=l/s
Availableflowoptionsarel/s,l/m,l/h,USGPM,UKGPM,m3/h,m3/morm3/s.
Availablevelocityoptionsarem/sorf/s.


Fig.15











11
=2.2Kvs
Usethe►button
toaddadigit.
Currentsetting.
EnterNew Kvs
2.3
Usethe◄button
toremoveadigit.
Usethe▲▼buttons
toincreaseor
decreaseavalue.
Pax0.000145
Conversion
factorfrom
pascals.
SelectDPUnit
0.0
Decimalplace
formatforthe
selectedunits.
Usethe ◄►buttons
toscrollthroughthe
availableoptions.
Presstoaccept.
PSI
l/sx60
Conversion
factorfrom
litrespersecond.
SelectFlowUnit
0.00
Decimalplace
formatforthe
selectedunits. l/m Usethe ◄►buttons
toscrollthroughthe
availableoptions.
Presstoaccept.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.

www.comdronic.co.uk
DampingMenu
Default=1.00SEC
ThisscreenallowstheusertoadjusttheapparentsensitivityoftheAC6bychangingthetimedelaybetween
eachscreenupdatefromaminimumvalueof0.1SECtoamaximumvalueof2.55SEC.AlongUpdateTimemay
beadvisableonanunstablesysteminordertogiveasteadierreading.


Fig.16











Oncethenewvalueiscorrectonthescreen,pressthebuttontoacceptit.Or,pressthebuttontoexit
thescreenandretainthecurrentsetting.


Default=3.0SEC
Thisscreenallowstheusertoadjusttheperiodoftimeoverwhichreadingsareaveraged,fromaminimum
valueof0.6SECtoamaximumvalueof11.0SEC.IncreasingtheSampleTimewillmakethescreenappearto
updatelessfrequently,butwithamorestablereading.


Fig.17











Oncethenewvalueiscorrectonthescreen,pressthebuttontoacceptit.Or,pressthebuttontoexit
thescreenandretainthecurrentsetting.











12
UpdateTime
2.00SEC
Usethe▲▼
buttonsforcoarse
adjustment.
SAMPLETIME
3.0SEC
NewUpdateTime.
Presstoaccept.
Usethe◄►
buttonsforfine
adjustment.
CurrentSample
Timeisalsoshown
forinformation.
SampleTime
5.0SEC
Usethe▲▼
buttonsforcoarse
adjustment.
NewSampleTime.
Presstoaccept.
Usethe◄►
buttonsforfine
adjustment.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.

www.comdronic.co.uk
AdvancedMenu
Default=Disabled
TherearethreeFlowAlerts:HIGHFLOW*,LOWFLOWandFLOWOKandtheserelatetotheflowthroughthe
selectedvalve.



Fig.18












*Forstaticbalancingvalves,HIGHFLOWconditionswouldnormallymeanthattheflowthroughthedeviceisin
excessofrecommendedmaximumflowsasquotedinBS7350.Forautomatic balancing valves, HIGH FLOW
conditions would normally mean that the maximum working Δp for the device has been exceeded. The
presence of the HIGH FLOW alert on the screen will almost certainly be accompanied by significant system
noise.

Note:ifFlowAlertsareEnabledwhenworkingonanunstablesystem,thedisplayedalertmaychange,quite
frequently,betweentheHIGH/LOW/OKoptionsandthismayonlyserveto
impede–ratherthanassist–the
commissioningprocess.Hence,itisstronglyrecommendedthatFlowAlertsremainDisabledwhenwork
isbeingcarriedoutonanunstablesystem,oronasystemthathaslittleregulation.




Default=5min
TheBacklightTimersetstheperiodoftimeafterwhichthebacklightwillturnoffafteraperiodofinactivity.
Ashorttimewillpreservebatterylife.

Fig.19
















13
High/LowFlowAlerts
Enabled
Usethe▲▼
buttonstomove
betweenthe
settings.
Presstoaccept.
Disabled
SelectLight‐OnTime
5min
Usethe▲▼
buttonstomove
betweenthe
settings.
Presstoaccept.
10min
1min
Alwa
y
sOn
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.

www.comdronic.co.uk
Default=5min
TheAuto‐OffTimersetstheperiodoftimeafterwhichtheAC6willturn‘OFF’afteraperiodofinactivity.
Ashorttimewillpreservebatterylife.


Fig.20












Default=mm
Thismenuoptionallowstheusertospecifythepreferredunitsforviewingandselectingvalvesizes.


Fig.21












Thisistheinternalpipediameterofthepipeworkthatthetargetmeasuringvalve/deviceisinstalledinandit
isusedbytheAC6toestablishthevelocityinthepipeforflushingpurposes.Velocityunitsareavailable(m/s
orf/s)andthesecanbeselectedintheUnitsMenu.Avalvewillneedtobeselected(seepage8)inorderfor
thisfeaturetobeused.

Fig.22











Oncethenewvalueiscorrectonthescreen,pressthebuttontoacceptit.Or,pressthebuttontoexit
thescreenandretainthecurrentsetting.

14
SelectAuto‐OffTime
5min
Usethe▲▼
buttonstomove
betweenthe
settings.
Presstoaccept.
10min
1min
Alwa
y
sOn
ViewSizeAs
mm
Usethe▲▼
buttonstomove
betweenthe
settings.
Presstoaccept.
Inches
=16.1 mm
Usethe►button
toaddadigit.
Currentsetting.
InternalPipeDiameter
21.6
Usethe◄button
toremoveadigit.
Usethe▲▼buttons
toincreaseor
decreaseavalue.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.

www.comdronic.co.uk
Quick‐ValveStoringFunction
Quick‐Valve allows the user to quickly save commissioning data for individual valves to the AC6’son‐board
memory. Within Quick‐Valve, there are 100 storage locations and these are arranged in 10 Groupsof10
Valves.

Quick‐Valvecanbeaccessedfromanyofthedisplayscreens(i.e.DPAndFlowDisplay,AdvancedDisplay,DP
Only DisplayorFlow Only Display). Simply press the  button whilst in any of these screens and the last‐
viewedstoragelocationwillbeshownonthescreen.Atthefirsttimeofuse,thedisplayedstoragelocation
willbeGroup1,Valve1.

OnceQuick‐Valvehasbeenaccessed,thestoragelocationsarenavigablebyusingthe▲▼buttonstochange
theGroupNo.andthe◄►buttonstochangetheValveNo.Asthevariousstoragelocationsareviewed,the
on‐screen display will change depending on whether the location is ‘empty’ or whether it already contains
storeddata.Examplesofthesescreensandthefurtherfeatureoptionsareshownbelow.

Note:evenwhenauseriswithintheQuick‐Valvescreens,theAC6willbecontinuingtotakereadings(evenif
theAC6 isnotconnected toasystem itwillstill betakinga reading!)anditmayhaveavalveselectedora
manual Kvs entered. Also, values for Target Flow and / or Design Flow may have been entered. For the
purposesofthissection,thisdatawillbereferredtoasthe‘LiveData’.

Example1–Iftheselectedstoragelocationalreadycontainsdata,thestoreddatawillbeshown:

Fig.23











Withtheabovescreeninview,pressingtheMENUbuttonwilldisplaythefollowingoptions:


Fig.24

















15
5.30KPa
CraneVariableD930/DM93015mm
0.256l
/
s
DESIGN103%
0.249
TARGET101%
4.0
Group1Valve1
DESIGNFLOW TARGETFLOW
102%
Group1Valve1
►Save
Pressthe▲ button
toCLEAR(delete)
thestoreddata
fromthislocation.
Pressthe◄ buttonto
LOADthevalve,Design
FlowandTargetFlow
sothattheybecome
partofthe‘LiveData
’
fortheAC6.
▼Exit
◄Load
▲Clear Pressthe▼ button
toEXITtothe
previousscreen.
Pressthe► buttonto
SAVE(overwrite!)thedata
currentlystoredinthis
locationwiththe
‘LiveData’.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.

www.comdronic.co.uk
Example2–Iftheselectedstoragelocationis‘empty’,thefollowingscreenwillbedisplayed:


Fig.25











Withtheabovescreeninview,pressingtheMENUbuttonwilldisplaythefollowingoptions:


Fig.26












Forcommissioningprofessionalsrequiringmoreadvancedfunctionality,itispossibletoupgradeQuick‐Valve
toPcomPRO.ThePcomPROupgradesoftwareisavailableonaCDand,onceinstalled,itwillenabletheuserto
preparea‘project’onacomputerpriortoattendingsite.Onceonsite,thedataforupto9,000valvescanbe
storedtotheAC6duringthecommissioningprocess.Then,uponreturntotheoffice,thesaveddatacanbe
transferredfromtheAC6tothecomputerforthepurposesofcreatingcommissioningreports.Please‘Contact
Us’forfurtherinformation.



















Group6Valve9
TOEXIT
Δ
pandFlowfromthe
‘LiveData’.
5.30KPa
MENU
0.256l
/
s
Usethe▲▼
buttonstoselecta
GroupNo.
Usethe◄►
buttonstoselecta
ValveNo.
Currentlyselected
GroupNo.&ValveNo.
Group6Valve9
►Save
Pressthe▼button
toEXITtothe
previousscreen.
Greyedoutbecause
thereisnosaveddatain
thislocationtoLOAD.
▼Exit
◄Load
▲Clear
Greyedoutbecause
thereisnosaveddatain
thislocationtoCLEAR.
Pressthe► buttonto
SAVEthe‘LiveData’to
thisstoragelocation.
16
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.
Press?
Buttonon
AC6for
Context‐
Sensitive
Help.

www.comdronic.co.uk


AppendixI




Glycol/WaterSpecificGravityChart


% Glycol Additive
Temperature
O
C
0 10 20 30 40 50 60 70 80 90 100
80
0.991 1.003 1.017 1.026 1.036 1.046 1.054 1.062 1.068
70
0.990 1.000 1.010 1.023 1.034 1.042 1.053 1.062 1.069 1.075
60
0.995 1.007 1.017 1.030 1.041 1.050 1.060 1.070 1.076 1.083
50
1.000 1.013 1.023 1.035 1.048 1.057 1.067 1.077 1.084 1.090
40
0.990 1.004 1.018 1.029 1.042 1.054 1.064 1.074 1.085 1.091 1.098
30
0.996 1.007 1.022 1.034 1.047 1.059 1.070 1.080 1.092 1.099 1.105
20
0.999 1.010 1.026 1.038 1.052 1.065 1.076 1.088 1.099 1.106 1.114
10
1.000 1.013 1.028 1.042 1.056 1.070 1.082 1.094 1.105 1.113 1.120
0
1.000 1.015 1.029 1.045 1.061 1.075 1.088 1.100 1.112 1.120 1.128
-10
1.048 1.065 1.079 1.092 1.107 1.118 1.127 1.135
-20
1.068 1.083 1.097 1.113 1.124 1.133 1.136
-30
1.087 1.100 1.118 1.128 1.137 1.137
-40
1.102 1.122 1.133 1.138 1.138


E&OE














A1

www.comdronic.co.uk


AppendixII

RecommendedUserMaintenanceProcedures


PressureSensorFlushing
ThepressuresensorwithintheAC6isprotectedfromthemajorityofsystem‐dirtbythepresenceofastrainer
ineachoftheRedandBlueconnectionportsonthetopoftheunit. These strainers have been carefully
selectedandwillpreventallbutthesmallestofdirtparticlesfromenteringthesensor‐unit.Theyarevitalfor
maintainingtheproperperformanceoftheAC6.

Overtime,however,theremaybeabuild‐upoftinydirtparticleswithinthesensor‐unitandifthisisallowed
tocontinuetheperformanceoftheAC6maybecomeaffectedintwoways:
A. Readingsmaybesignificantlylessthanthetruevalue,and/or
B. On‐screenreadingsmaychangeveryslowlywhenadjustmentsaremadetothebalancingvalve.

Regularlyperformingasimpleflushwillhelptoreduceanybuild‐upofdirtwithinthesensor‐unit:
1. EnsurethattheequalisingvalveontheAC6isfullyOPEN.
2. HoldtheAC6upsidedownandconnectacool,clean,watersupplytotheBlueconnectorandallow
thewatertoflowoutoftheRedconnector.Thisistheback‐flushandshouldalwaysbedonefirst.
3. Whilst keeping the AC6 upside down, disconnect the water supply from the Blue connector and
reattach it to the Red connector and allow water to flow out oftheBlueconnector.Thisisthe
forward‐flush.

Inadditiontoperformingsimpleflushes,iftheAC6isregularlyusedonextremelydirtysystemsitmayalsobe
necessarytoperiodicallyperformanadvancedflush.Anadvancedflushisthesamebasicprocessasasimple
flushbutitisperformedwiththestrainerstemporarilyremoved(seestrainerremovalinstructionsopposite).

Duringanadvancedflush,itisadvisabletocleanthestrainersinasoapysolutionandthenflushthemwitha
pressurised air / water source. However, if the strainers are inverypoorconditionitmaybenecessaryto
replacethemwithnew(sparepartordercode=CA019).

IfanAC6continuestoreadincorrectlyevenafteranadvancedflushandstrainerchange,please‘ContactUs’
forfurtheradvice.


HoseMaintenance
TheconnectiontubessuppliedwiththeAC6arefittedwithsnap‐connectorsonbothends.Overtime,these
snap‐connectorsmay become a bit stifftooperate as systemdirtaccumulates in the ‘snapping’ mechanism
andcontinuedusemayresultindamagetotheAC6.Toavoidthis,theregularapplicationofasmallamountof
multi‐purposegreaseineachofthesnap‐connectorswillhelptokeepthemingoodworkingorder.











A2