
Model9060ZManual
20
• Themainspowermustbeeither100/110VACor220/240VACwithamainsfrequencyof50or60Hz
• Thesupplycircuitmustbefusedtoatleast10Ampsandhaveadualpoleisolationswitchwithin
easyaccessoftheoxygentransmitter.Theisolationswitchmustbemarkedastheisolationswitch
forthisequipment.Itisrecommendedthataseparateisolationswitchbeusedforeachtransmitter
sothatatransmittercanbeservicedindividually.
• Thepowersupplycablesmustbesuppliedandinstalledaccordingtolocalregulations
• The earth connection must comply with the local regulations must have a current carrying
capability
equalorgreaterthanthesupplyfusecurrentrating
• Theearthconnectionmustbeconnectedtotheprimaryearthstudinsidethetransmitteronthe
righthandside
• Allother bonded earth connections from the external wiring must be connected to the primary
earthstud.
Alloperationsrelatingtheelectricalwiringandinstallationmustbecarriedoutbyqualifiedpersonsin
accordancewiththesafetyregulationsandthewiringrules.
NOTE:Thepowerswitchinthetransmittercanbeusedtoturnoffthetransmitter.Theremustbean
approved isolation device installed to provi
de complete isolation of the mains power to the
transmitter.Themainswiringterminalmustnotbeusedasandisconnectdevice.
4.6HEATERINTERLOCKRELAYS
HeaterSupplyInterlockConnectionforHeatedProbes
Ifasafetyinterlockisnotrequired,awiremustbeconnectedbetweenterminals10&11toenable–
• Theheatersonheatedprobes
• Processalarms
• Auto‐purgeandauto‐calchecking
• Runtimetimer
4.7CONNECTINGANOXYGENPROBECABLE
Connect the probe lead as shown in the following drawings. Unheated probe leads have integral
referenceair tube.An adaptor hasbeen supplied toconnect thistube to quarterinch flexible PVC
tubing,fromtheairpumporreferenceairsupply.
CAUTION
Explosion protection for heated probes is achieved by switching the power to the probe heater off
wheneverthemainfuelvalveisclosed.
Theprincipleofsafetyisthatifthemainfuelvalveisopenthenmainflamehasbeenestablished.Withthis
primarysourceofignitionon,theprobeheatercanbesafelyswitchedon.Themostdanger
oussituationisif
fuelleaksintothecombustionappliancewhenthefuelvalveisclosed.Whenpowerisremovedfromthe
mainfuelvalvetheheatershouldalsobeswitchedoff.
Toachievethisprotection,connectamainfuelvalvevoltagefreecontac
ttothe‘BURNERINPUT’terminals
10 & 11. When the mainfuel valve is open, the voltage free contact should be closed. For installations
wherethereisnoriskofexplosion,connectalinkbetweenterminalsnumber10&11.