Tech Controllers ST-976 - Fuel Level Calibration

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38
TECHRSregulator
SelectthisoptionifyouconnectaroomregulatorwithRScommunication.Sucharegulatorenablestheuser
toviewcurrentCHboilerparametersandchangecertainsettingse.g.pre‐setCHboilertemperature,pre‐set
DHWtemperature.
Standardregulator
Selectthisoptionifyouconnectatwo‐stateregulator.Sucharegulatorsendsasignaltothemaincontroller
informingifthepre‐setroomtemperaturehasbeenreachedornot.
CHpumproomregulator
Whenthisoptionisselected,thesignalfromroomregulatorinformingthatthepre‐setroomtemperaturehas
beenreacheddisablestheCHpump.
Roomreg.temp.lower
NOTE
ThisparameterconcernsRSregulator‐decreasefunctionandStandardregulatorandTECHregulator
withRScommunication.
Theusersetsthevalueofpre‐setvalvetemperaturereductionwhichwillbeintroducedwhenthepre‐setroom
temperatureisreached.
Thetemperaturereductionwillnotbelowerthantheminimumpre‐setCHtemperature.
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Example:
Pre‐setCHboilertemperature 55°C
Roomreg.temp.lower 15°C
Minimumpre‐setCHboilertemperature 45°C
Pre‐setCHboilertemperatureafterthepre‐settemperature
valuehasbeenreached
45°C
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Oncethepre‐setroomtemperaturehasbeenreachedinthebuilding (signalised by the room
regulator),thepre‐settemperatureattheCHboilerwillbereducedto45°C(10°Cdifference)although
thevalueofRoomreg.temp.lowerparameteris15°C.
4.4.10 Fuellevelcalibration
FITTER'S
MENU
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FUELLEVEL
CALIBRATION
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Fueltankfull
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Fueltankempty
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Conductingfuellevelcalibrationproperlyenablestheusertoviewthecurrentleveloffuelonthecontroller
screen.
 Thefirststepinvolvesfillingthefueltankup
 Next,selecttheoptionFueltankfull.Thecontrollerremembersthelevelasfull(100%).
 Whenthereisnofuelleftinthetank(afteraperiodofCHboileroperation),selecttheoptionFuel
tankempty.