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Honeywell EN2H-0221GE51 R0808 service manual BZ1, BZ2

Models: EN2H-0221GE51 R0808

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SDC / DHC			Technical data

8.4	Digital inputs

Designation	Brief description	Input type	Measurement
			range
Impulse metering unit	Imp	Extra-low voltage	≤ 10 Hz

Burner stage 1 operating	BZ1	230 V	OFF, ON
hour counter

Burner stage 2 operating	BZ2	230 V	OFF, ON
hour counter

EN2H-0221GE51 R0808

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Image 253

Honeywell EN2H-0221GE51 R0808 service manual BZ1, BZ2

Contents

Smile SDC heating and district heating controller EN2H-0221GE51 R0808 Contents Menu-selection level SDC / DHCControl Functions 114 Hydraulic Components 128 155 171 254 Technical data 250255 SDC / DHC Intended use Software versionCable installation Power supplyConnection conditions Cable cross-sectionsGrounding and zeroing Hot-water temperature greater than 60 CSDC / DHC Safety precautions for EMC-compliant installation SDC / DHC SDC / DHC SDC / DHC SDC / DHC Overview Abbreviations Display and operating elements OperationDisplay basic display Setting Daytime room temperature buttonFactory setting Setting rangeFactory setting Setting range 2.4 Night-time room temperature buttonDaytime hot-water temperature button Setting Factory setting 50 COperating mode button basic display Setting range One-time hot-water circuit loadingParty AbsentAutomatic SummerAbsence mode short-term program Setting Return to the basic displayP1 P2, P3 Party mode short-term programAutomatic mode Disabling / enabling default programs P2 to P3 Display 2.5.4 Disabling / enabling default program P2 to P3Enabling Manual summer operation excluding heating operationContinuous lowering operation Continuous heating operationSwitching time programs / Holiday programs button Holiday mode System information button Factory setting Current dateOperating overview OFF Temperature displays Information Display Condition RemarksEM-SET ON/OFF Information Display Condition RemarksMC1 ThermostatMC2 Information Display Condition Operating statesInformation Display Condition Clock Information Display Condition Cancellation Press Manual mode / Emission measurement buttonSDC / DHC Procedure Access to the technician / OEM area2.10 Setting Setting range Heating curve Menu-selection level Parameter Programming Date Parameter Programming Date Hydraulics Parameter Programming Date Hydraulics Configuration Hot water Direct heating Circuit Mixed heating Parameter Time Date menu AccessReturning Timeprograms menu Access Returning Selection of the program Selection of the control circuitSelection of day of the week and cycle Switch-off time Cycle temperature DHW Switching time programming programs P2 and P3 disabledDefault program P1 Default switching time program P1 for heating and hot waterSwitching time programming program P2 and P3 enabled Default program P3 Default program P2Calling up the copy function days Copying switching time programs days Source day Target dayCalling up the copy function heating circuits Block programming SDC / DHC DHW Copying heating circuitsReloading default programs SDC / DHC Reloading default programs Switching time programs P2 and P3 enabled Setting values DE System Parameters menu Access ReturningFactory setting German System information button, pg Language selectionControl mode selection Set values Factory setting EffectsSwitching time programming Time programSetting range Individualised operating mode for each heating circuit Slow increase in outside temperature Quick increase in outside temperatureFactory setting 20 C Parameter resetDHW menu Complete resetFactory setting 40 C Night-time hot-water temperatureALL Reduced operation ECO switch-off operationECO ECO, REDUFH Heating systemRAD ConvPara Designation Setting range / Setting values Meter Parameter settings Hydraulics menu HydraulicFactory setting Setting Mixed heating Electrical heating circuit Buffer sensor Setting System parameters menu System ALL OFF, on SDC, DHC RTCSDC/DHC OEMHot-water circuit menu DHW SDC / DHC Auto RED Direct heating circuit menu Unmixed CircCON Room connection Stby Mixed heating circuit 1 / 2 MIX.VALVE 1 / MIX.VALVE 2 menus Room connection SDC / DHC Room control Tn 240 min SDW 30 only Holiday operating Heat generator menu Heat Gener Unlimited minimum limit SLT 102 EN2H-0221GE51 R0808 OFF Reset ResetDistrict hot water menu DIST.HEATING Return increase menu Return Contr Solar menu Solar Solid menu Solid Fuel Buffer menu Buffer Total flow regulation menu Main Supply Cascading menu Cascade Relay test menu Relay Test Data bus menu BUSOFF-ON-OFF STOP-OPEN-CLOS StopError messages menu Alarm Sensor calibration menu Sensor ADJ Error messages 2 menu AlarmControl Functions Example VF2 SLPSLP, DKP DKP, VA1 VA2FKF Switching time program enablingSslp SlvfEnabling Separate Control Mode Suppressing the cycle temperature on time program levelSelection of hydraulic parameter presettings Switching from SDC to DHCVariable inputs and outputs of device series SDC/DHC Application System Key/MenuParameter Design temperature Outside temperature disableClimate zone Outside temperature rise Summer switch-offOperation without room temperature sensing Cancelling switch-offSystem frost protection Cycle operation Operation with room temperature sensingFrost protection function in case of heat generator fault Pump forced operation Unlimited start-up protection Heat generator Boiler Heat generator start-up protectionStart-up protection controlled by weather conditions Minimum limit based on demand Heat generator minimum temperature limitConditional minimum limit Unlimited minimum limitBurner switch-off in case of a faulty heat generator sensor Heat generator sensor control modeExternal burner switch-off Switching Multi-stage heat generator/Switching differential Burner enabling in case of a faulty heat generator sensorMinimum burner runtime Mode of operation with switching differential Combined operation for 2-stage heat generators Time-out during start-up relief Unlimited enable during start-up reliefResetting Operation for modulating burners Modulation of sample time Ta Modulation of P part XpModulation of runtime Modulation of integral action time TnModulation of start time Modulation of start power OpenTherm logo Electrical connection OpenThermExternal heat generator cut-off Two measuring points in the combustion chamberSet values OFF Dissipation into hot-water tankDisplay of flue gas temperature only Exhaust gas temperature monitoringDischarge to heating circuits Heat generator lock if limit value is exceeded for set timeBurner counter mode Recommended settingHeat generation, heat exchanger, district heating Para Designation Range Presetti Step Unit Meter IncreaseContinuous heat exchanger valve control 1 On/Off operation of the district heating valvePara Designation Range Presetti Step Unit Meter District heating return temperature limit SDC / DHC Return temperature limit for hot-water loading Range Pre Step Unit SettingPara- Designation meter Hot-water pre-regulator with district heating systems Mode of operation Hot-water pre-control New parameters Quick hot-water controlSDC / DHC SDC / DHC Conditional parallel operation for mixed heating circuits Circulation pump control modeReturn interval flushing Switch-off of district heating controlCharging pump CHP Boiler circuit pump Primary pumpReturn increase Bypass pump RBP Return maintenance through controlled feed water additionIndirect return increase Heating curve setting heating curve Recommended settings Heating circuit temperature limit SDC / DHC SDC / DHC Heating function for floor covering setting Function heating acc. to DIN 4725 Part 4 settingFixed-value control Heating circuit constant temperature controlNo room sensor with the following conditions Heating circuit room factor Heating circuit room controller Switch-on/switch-off optimisationParameter settings for the switch-on optimisation in the HC Parameter 41 switch-on optimisation, 03 adaptation restart Activation of switchParameter 44 min. jump back temperature On optimisationSwitch-on optimisation without room sensor Switch-on optimisation with room sensor adaptationParameter 46 pre-heating time at 0C Parameter 47 lowering rampHeating limit function Room setpoint rampExample Heating circuit room frost protection limit Function Mixed heating circuits cooling switch-overWall device functionality limitation Heating circuit correction Switch-over from heating mode to cooling modeCooling with humidistatic switch-off Humidistatic switch-offHeating circuit name Access code Room thermostat function maximum room temperature limit Mixed heating circuit control Proportional part Xp Integral action time Tn Sample time Ta Application Adjustment TimeActuator runtime Example Actuator end position function Hot-water production Hot-water tank loading SLP See also 5.1.2.4 Daytime hot-water temperature button, pgExample Before Example AfterSDC / DHC SDC / DHC SDC / DHC SDC / DHC Quick hot-water connection in cascaded systems Tank priority no heating demand HeatingCirculation pump CIR Electrical heating element ELH Solar/Solid fuel/Buffer Solar function Solar switch-on differentialSolar priority mode hot water setpoint control Solar priority mode disabling of heat generatorSolar priority mode buffer setpoint control Solar parallel operationOperation in buffer priority mode Buffer tank function SDC / DHC SLP PLP SLP SF SLP HC/HW Buffer control modeBuffer HC/HW Buffer control mode Discharge control Loading controlExample Tank loading pump with provision tanks only Set value OFFSDC / DHC Buffer loading pump extended running time Buffer sensor 2 BS2 Buffer sensor 2 BS2Solid fuel function Solid-fuel boiler minimum temperature limitTank loading switch-over Heat generator solid-fuel cycle disablePrerequisite Solar loading switch-over operation Hydraulic buffer relief HBR Kspf BSetting range OFF, -20 +30 Global fault message output Other system components Global fault message inputTimer Connection terminal of variable input 1 2, 3 open External switching modemHEATING, HEATING, Standby Demand contact System information Address Device type Assignment Bus communication Bus address of central deviceHeating circuit demand Tank control mode tank priority operationClock synchronisation Fault messages/Status indications Room temperature transmissionExamples with multiple control devices MK1 Important note for parameter setting 226 EN2H-0221GE51 R0808 Address CD address Assignment Address CU address Assignment Operation with wall device SDWAutomatic Mode Heating Lowering Automatic Brief Flashing Control mode/Function Moon LED Clock LED Sun LEDOFF Flashing Flashing OFFOperation with NTC 20K room temperature sensor Extended access authorisation Function of the cascade parameters Switch-off characteristics Delay, enabling, full load in cascade operation Control characteristicsSpecial function characteristics Grouping for base and peak loads ANF118-V2.2 specificationsAutomatic call-up Emission measurement not for DHC Input Only executed ifRelay/function test Single-stage heat generator Modulating modeStage heat generator 2x single-stage heat generatorsMeaning Display Value RangeBus test SDC / DHC Fault messages Eeprom RSC/RSThese fault messages come from automatic stokers and are Fault type Field Code Additional fault processingHigh LOWBasic display/fault stack fault messages Fault MessageOperating Key/Menu Parameter Information Sensor calibration Full controller resetController time correction III Technical dataSafety low-voltage lines Installation recommendations Mains voltage linesSensor resistance values 1 NTC VF1 2 PTVE1 VE2BZ2 BZ1Log Index SDC / DHC SDC / DHC Automation and Control Solutions