Comdronic AC6 User manual

www.comdronic.co.uk
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AC6OperatingInstructions
Contents
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HealthandSafety1
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StatementofConformity1
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MeasurementRange&Accuracy1
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ContactUs1
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DescriptionofAC62
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ConnectionProcedure3
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DisconnectionProcedure3
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MenuMap4
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On‐ScreenMessages/Warnings5
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CommissioningMenu8
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PreferencesMenu9
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DisplayMenu11
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SystemSetupMenu14
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Appendices
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Glycol/WaterSpecificGravityChart   A1
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RecommendedUserMaintenanceProcedures  A2
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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.
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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.
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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bothCE‐marked&UKCA‐marked,inaccordancewiththerelevant
EU/UKlegislation.
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MeasurementRange&Accuracy
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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250kPa 1.0kPato800kPa
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Factory calibration is carried out, in controlled conditions, using reference equipment which has been
independentlycalibratedtoUKASstandards.
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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.
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Between services, there are some simple user‐maintenance procedures which can be performed to help
prolongtheaccuracyandperformanceoftheAC6–pleaserefertoAppendixIIforfurtherinformation.
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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
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1

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DescriptionofAC6 
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PressANYbuttontoswitchtheAC6‘ON’.
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
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.
Usethe▲ ► ▼ ◄buttons
formenunavigationandto
enternumericaldata.
Presstocyclethrough
availabledisplayscreens.
Alsouse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user
serviceable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.
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toaccessthehandset’s
on‐boardvalvedatabase.

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TheAC6handsetissuppliedinalightweightcarrycasewiththefollowingaccessories:
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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/2.8mmdiameterneedles.
Apairofangle‐patternBinder‐styleconnectionadaptorswith2.0mmdiameterneedles.
Asetofhexkeys(3mm,4mm&5mm)andascrewdriver.
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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. 
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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.
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1. Selectthecorrectconnectionadaptorsforthevalve/devicebeingmeasuredandattachthemto
theconnectiontubes.
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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.
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* Ifthe Δp acrossthevalve/deviceislow,thepurgingprocesswillbeslowduetotheinternalresistance
ofthe
AC6 .
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** The AC6 isverysensitiveandreadingswillbeaffectedifthepositionofthehandsetisadjustedaftera
datumhasbeenset.Alanyardisprovidedandcanbeusedtosuspendthe AC6 fromadjacentpipework,
asappropriate.
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***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.
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DisconnectionProcedure
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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.
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3

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MenuMap
TheAC6hasfourmenusforeaseofuse:
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Commissioning
Menu
►Preferences
Menu
►Display
Menu
►SystemSetup
Menu
◄◄◄
SelectAValve 
Show/Hide
Makers  DPandFlow Auto‐OffTimer
▼▲▼▲▼▲▼▲
ValveSetting 
ShowAll
Makers  Advanced Damping
▼▲▼▲▼▲ ▼▲
DesignFlow DPUnits DPOnly Language
▼▲▼▲▼▲ ▼▲
TargetFlow% FlowUnits 
Velocity
(Flushing)  FactoryReset
▼▲▼▲▼▲
SpecificGravity SizeUnits  ChangePIN
▼▲▼▲
ChangeKvs  “About”
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Note:menuoptionsshowninredmayormaynotappearinthemenulists,dependingontheselectedvalve
andtheprecisesetupofthehandsetbeingused,asfollows:
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 ValveSettingwillonlyshowifanadjustablevalvehasbeenselected.
 DesignFlow&TargetFlow%willonlyshowforFixedOrifice‐andVariableOrificeBalancingValves.
 ChangeKvswillonlyshowifaFixedOrificeBalancingValvehasbeenselected.
 ChangePIN will notshowifPINfunctionality has beendisabledwithin the ‘Factory’ settingsofthe
handset(“ContactUs”formoreinformation).
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4

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On‐ScreenMessages/Warnings
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
MAX
Δp
ZERO SG TEMPHIGH
TheZERObuttonwillneedtobe
pressedtosetadatumbeforea
readingcanbetaken.
[Displayedtop‐leftofscreen.]
SpecificGravityhasbeensettoa
valueotherthan1.0,andreadings
arebeingauto‐correctedforSG.
[Displayedtop‐leftofscreen.]
Temperatureofthefluidinside
thehandset>50°C,whichistoo
highforreadingstobe
temperature‐compensated.
[Displayedtop‐leftofscreen.]
Remainingbatterypowerhas
droppedbelow7.0volts.
[Displayedtop‐leftofscreen.]
Remainingbatterypowerhas
droppedbelow6.2volts.
[Displayedfull‐screen.]
Action:FITANEWBATTERY.
Remainingbatterypowerhas
droppedbelow6.6volts.
[Displayedtop‐leftofscreen.]
9v
PP3
IMPORTANT
OPENEqualisingValve
BEFOREConnecting/
DisconnectingTubes! 
OVENTROP
HydroconVTZ
15mm
5.30
Detailsoftheselectedvalve
–
plus
itssetting,ifapplicable–are
displayedateveryturnON.
[Displayedfull‐screen.]
Crucialfortheprotectionofthe
pressure‐sensor,andisdisplayed
ateveryturnON&turnOFF.
[Displayedfull‐screen.]
Δ
p
DP<0.60kPaand,assuch,isit
toolowforFlowtobederived.
[Displayedtop‐rightofscreen.]
Δ
p
0.60 <DP<0.95kPaand,although
thismightbealittlelowerthan
ideal,Flowisnowbeingderived
anddisplayed.
Δ
p
Iftheselectedvalveisline‐size,
pipe‐lossesarebeingassessedas
beingextremelyhigh.
[Displayedtop‐rightofscreen.]
MeasuredDP>Range‐of‐
Operation.
[Displayedfull‐screen.]
Action:Proceedwithcaution.
5
SensorSignalError.
[Displayedfull‐screen.]
Action:Ifproblempersists,
‘ContactUs’forfurtheradvice.
DPisunexpectedlyNEGATIVE.
[Displayedtop‐leftofscreen.]
Action:DOUBLE‐CHECK
INSTALLATION/CONNECTIONS.
‐
Δ
p

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CommissioningMenu
TheCommissioning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.

TIP:Whistinanyscreen,press?onthekeypadasashortcuttothismenuoption.

The performance characteristics of over 7,000 valves – from 80+manufacturers/brands–arepre‐
programmed into the AC6 and this data is updated as a matter of course whenever an AC6 is serviced by
Comdronic.














Make selections for all four parameters (i.e. Maker, Type, Model&Size) before pressing the  button to
acceptthem.Or,pressthebuttontoexitandretainthepreviousselection.

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 .

P
TIP:WhilstinanyDisplayscreen,press▲onthekeypadasashortcuttothismenuoption.

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characteristicsareusedforthe

derivationofflow. 


 














CRANE
FixedOrifice
D902
15mm
Maker/Manufacturer/
Brand.

ValveTypee.g.Fixed,
Variable,PICV,etc.


ValveModel/Fig.No.


ValveSize.
Use▲&▼toselecta
parameter.
Use◄&►toscroll
throughtheavailable
optionsforeachparameter.
Currentsetting.
2.4
Use▲toincreaseavalue.
Use▼todecreaseavalue.
{▼atzeroforadecimal
point.}

Use►toaddadigit.

Presstoacceptthenew
value.
Maximum&Minimum
usablesettingsforthe
selectedvalve.
Use◄toremoveadigit.
PressBACKARROWtoexit
andretainthecurrent
setting.
6
MAX8
MIN2
=8


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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.















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‘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’.






























7
9.8
EnterDesignFlow
=9.5l/s

105
EnterTargetFlow%
=100%

Use◄toremoveadigit.
PressBACKARROWtoexit
andretainthecurrent
setting.
Use▲toincreaseavalue.
Use▼todecreaseavalue.
{▼atzeroforadecimal
point.}

Use►toaddadigit.

Presstoacceptthenew
value.
Currentsetting.
Use▲toincreaseavalue.
Use▼todecreaseavalue.
{▼atzeroforadecimal
point.}

Use►toaddadigit.

Presstoacceptthenew
value.
Use◄toremoveadigit.
PressBACKARROWtoexit
andretainthecurrent
setting.
Currentsetting.

www.comdronic.co.uk
TIP:SGcanbeadjustedwithintherange0.9<=SG<=1.2.
Thismenu optionallowstheusertoenterthe SpecificGravity(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.















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.

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.




























8
1.08
EnterSG
=1

0.6
EnterNewKvs
=0.5Kvs

Use◄toremoveadigit.
PressBACKARROWtoexit
andretainthecurrent
setting.
Use▲toincreaseavalue.
Use▼todecreaseavalue.
{▼atzeroforadecimal
point.}

Use►toaddadigit.

Presstoacceptthenew
value.
Currentsetting.
Use▲toincreaseavalue.
Use▼todecreaseavalue.
{▼atzeroforadecimal
point.}

Use►toaddadigit.

Presstoacceptthenew
value.
Use◄toremoveadigit.
PressBACKARROWtoexit
andretainthecurrent
setting. Currentsetting.