Instruction manual

Section3-Controlunitinstallation
GENERAL
WARNING: Pleasereadthissectioncompletelybeforecommencinginstallation.
Thepanelmustbelocatedinaclean,drypositionatleast2metresawayfromanyradiotransmittingequipment
e.gPagersystems.
NOTE
Whenchanginganyplug-incardsorloopdevices,observeanti-staticprecautions.Ensurethatallpoweris
removedandthesystemisswitchedoff.Failuretodosomayresultindamagetothecardsorpanel.
Thepanel beswitchedoffbeforeremovingorreplacinganycardormodule.Failuretoobservethismay
causedamagetotheprintedcircuitboards.
EachloopcardhasanID,setviathedipswitchesmountedoneachloopcard.Notwoloopcardshouldhave
thesameID.
FireConfig.exemustbeusedforinitialsystemsetup.
TheMainssupplyshouldbeinstalledinaccordancewiththecurrenteditionoftheIEEwiringregulations.
Connectiontothemainssupplymustbeviaanisolatingprotectivedevice(e.g.anisolatingfuse)reserved
solelyforthefirealarmsystem.Itshouldbeinsuredthatallisolatingswitches,circuitbreakersetc.,connected
tothesystemshouldbelabelled“FIRE ALARMDONOT SWITCHOFF”.
Correctearthingisvitalfortroublefreeoperation. Theearthconnectionshouldbeasshortaspossible,using
4mmsquareconductors,connecteddirectlytoagoodqualityearth. Theearthshouldnotberoutedviaradio
transmittingdevicesorotherelectricalequipment.
Allcablesenteringthecontrolunitshouldbescreenedandferritesleeves,suppliedwiththecontrolunit,should
beused. Allscreensshouldbeterminatedatthecablegland.Onlymetal,EMCshieldingcableglandsshould
beused.Screensshouldbecontinuousandhavecontinuityalongtheentirelengthofthecable.Onlyconnect
thescreentoearthatoneendthusavoidingearthloops. Allunscreenedconductorsshouldbekeptasshortas
possibleandtheferriteringshouldbeasclosetothecableglandaspossible.Wrapeachconductoraroundthe
ferriteatleasttwice. AnycommunicationfaultsexperiencedarelikelytobecausedbypoorEMCshielding
practices.Repeatercablescreensshouldneverbeconnectedtoearth,alwaysusetheterminalsprovided.
MUST
LOOP OUT
LOOP IN
SCREENCONNECTED
TOMETAL CABLEGLAND
ENSUREGOOD
CONNECTIONBETWEEN
GLAND ANDENCLOSURE
SHORT CIRCUIT ISOLATORS ARE
ALWAYS THEFIRST ANDLAST
DEVICEON A LOOP ANDSHOULD
ALWAYSBEUSED AT ZONE
BOUNDARIES.
ISOLATOR ISOLATOR
ISOLATOR
CONDUCTORSWRAPPED
AROUNDFERRITECORE
ISOLATOR
ZONE1 ZONE32
ZONE2
SCREENNOT EARTHED
AT THISEND
-9-
ED816A AddressableFireandgasdetectionInstallationmanual8-9-08Rev-a