Manuals / Honeywell / Household Appliance / Heating System

Honeywell EN2H-0221GE51 R0808 Power supply, Connection conditions, Cable cross-sections

Models: EN2H-0221GE51 R0808

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Safety instructions	SDC / DHC

2.2.1Power supply

Do not disconnect the controller from the mains supply!

The battery for saving all individualised data is otherwise unnecessarily strained. The frost-protection function of the controller is deactivated.

2.2.2Connection conditions

All electrical connection work may only be carried out by qualified personnel!

2.2.3Cable cross-sections

1.5mm2 for all cables carrying 230 V (power supply, burner, pumps, actuator).

0.6mm2 for bus cables (recommended type J-Y(St)Y 2 x 0.6).

0.5 mm2 for sensors, selectors and analog signal cables.

2.2.4Maximum cable lengths

Sensor, selector and analog inputs

We recommend using cables no longer than 200 m. Longer connection lines could be used, but increase the risk of interference.

Relay outputs Unlimited cable length.

Bus connections

Max. length of 100 m from the first bus subscriber to the last one (incl. wall modules).

2.2.5Cable installation

Install cables for sensors apart from the cables carrying 230 V! Branch boxes in the sensor cable must be avoided!

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Honeywell EN2H-0221GE51 R0808 service manual Power supply, Connection conditions, Cable cross-sections, Bus connections

Contents

Smile SDC heating and district heating controller EN2H-0221GE51 R0808 Contents SDC / DHC Menu-selection levelControl Functions 114 Hydraulic Components 128 155 171 Technical data 250 254255 SDC / DHC Software version Intended usePower supply Cable installationConnection conditions Cable cross-sectionsHot-water temperature greater than 60 C Grounding and zeroingSDC / DHC Safety precautions for EMC-compliant installation SDC / DHC SDC / DHC SDC / DHC SDC / DHC Overview Abbreviations Operation Display and operating elementsDisplay basic display Daytime room temperature button SettingFactory setting Setting rangeNight-time room temperature button Factory setting Setting range 2.4Daytime hot-water temperature button Setting Factory setting 50 CSetting range One-time hot-water circuit loading Operating mode button basic displayAbsent PartyAutomatic SummerSetting Return to the basic display Absence mode short-term programParty mode short-term program P1 P2, P3Automatic mode Display 2.5.4 Disabling / enabling default program P2 to P3 Disabling / enabling default programs P2 to P3Enabling Manual summer operation excluding heating operationContinuous heating operation Continuous lowering operationSwitching time programs / Holiday programs button Holiday mode Factory setting Current date System information buttonOperating overview Temperature displays Information Display Condition Remarks OFFEM-SET Information Display Condition Remarks ON/OFFThermostat MC1MC2 Operating states Information Display ConditionInformation Display Condition Clock Information Display Condition Manual mode / Emission measurement button Cancellation PressSDC / DHC Access to the technician / OEM area Procedure2.10 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 Access Time Date menuReturning Timeprograms menu Access Returning Selection of the control circuit Selection of the programSelection of day of the week and cycle Switch-off time Cycle temperature Switching time programming programs P2 and P3 disabled DHWDefault switching time program P1 for heating and hot water Default program P1Switching time programming program P2 and P3 enabled Default program P2 Default program P3Copying switching time programs days Source day Target day Calling up the copy function daysCalling up the copy function heating circuits Block programming SDC / DHC Copying heating circuits DHWReloading default programs SDC / DHC Reloading default programs Switching time programs P2 and P3 enabled System Parameters menu Access Returning Setting values DEFactory setting German System information button, pg Language selectionSet values Factory setting Effects Control mode selectionSwitching time programming Time programSetting range Individualised operating mode for each heating circuit Quick increase in outside temperature Slow increase in outside temperatureFactory setting 20 C Parameter resetComplete reset DHW menuNight-time hot-water temperature Factory setting 40 CALL ECO switch-off operation Reduced operationECO ECO, REDHeating system UFHRAD ConvParameter settings Hydraulics menu Hydraulic Para Designation Setting range / Setting values MeterFactory setting Setting Mixed heating Electrical heating circuit Buffer sensor Setting System parameters menu System ALL OFF, on RTC SDC, DHCSDC/DHC OEMHot-water circuit menu DHW SDC / DHC Auto Direct heating circuit menu Unmixed Circ REDCON 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 Reset OFF 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 Data bus menu BUS Relay test menu Relay TestOFF-ON-OFF STOP-OPEN-CLOS StopError messages menu Alarm Error messages 2 menu Alarm Sensor calibration menu Sensor ADJControl Functions Example SLP VF2SLP, DKP DKP, VA1 VA2Switching time program enabling FKFSslp SlvfSuppressing the cycle temperature on time program level Enabling Separate Control ModeSwitching from SDC to DHC Selection of hydraulic parameter presettingsVariable inputs and outputs of device series SDC/DHC Application Key/Menu SystemParameter Outside temperature disable Design temperatureClimate zone Summer switch-off Outside temperature riseCancelling switch-off Operation without room temperature sensingSystem frost protection Operation with room temperature sensing Cycle operationFrost protection function in case of heat generator fault Pump forced operation Heat generator Boiler Heat generator start-up protection Unlimited start-up protectionStart-up protection controlled by weather conditions Heat generator minimum temperature limit Minimum limit based on demandConditional minimum limit Unlimited minimum limitHeat generator sensor control mode Burner switch-off in case of a faulty heat generator sensorExternal burner switch-off Burner enabling in case of a faulty heat generator sensor Switching Multi-stage heat generator/Switching differentialMinimum burner runtime Mode of operation with switching differential Combined operation for 2-stage heat generators Unlimited enable during start-up relief Time-out during start-up reliefResetting Operation for modulating burners Modulation of P part Xp Modulation of sample time TaModulation of integral action time Tn Modulation of runtimeModulation of start time Modulation of start power OpenTherm OpenTherm logo Electrical connectionTwo measuring points in the combustion chamber External heat generator cut-offSet values OFF Dissipation into hot-water tankExhaust gas temperature monitoring Display of flue gas temperature onlyDischarge to heating circuits Heat generator lock if limit value is exceeded for set timeRecommended setting Burner counter modePara Designation Range Presetti Step Unit Meter Increase Heat generation, heat exchanger, district heating1 On/Off operation of the district heating valve Continuous heat exchanger valve controlPara Designation Range Presetti Step Unit Meter District heating return temperature limit SDC / DHC Range Pre Step Unit Setting Return temperature limit for hot-water loadingPara- Designation meter Hot-water pre-regulator with district heating systems Mode of operation Hot-water pre-control Quick hot-water control New parametersSDC / DHC SDC / DHC Circulation pump control mode Conditional parallel operation for mixed heating circuitsSwitch-off of district heating control Return interval flushingCharging pump CHP Primary pump Boiler circuit pumpReturn increase Return maintenance through controlled feed water addition Bypass pump RBPIndirect return increase Heating curve setting heating curve Recommended settings Heating circuit temperature limit SDC / DHC SDC / DHC Function heating acc. to DIN 4725 Part 4 setting Heating function for floor covering settingHeating circuit constant temperature control Fixed-value controlNo room sensor with the following conditions Heating circuit room factor Switch-on/switch-off optimisation Heating circuit room controllerParameter settings for the switch-on optimisation in the HC Activation of switch Parameter 41 switch-on optimisation, 03 adaptation restartParameter 44 min. jump back temperature On optimisationSwitch-on optimisation with room sensor adaptation Switch-on optimisation without room sensorParameter 46 pre-heating time at 0C Parameter 47 lowering rampRoom setpoint ramp Heating limit functionExample Mixed heating circuits cooling switch-over Heating circuit room frost protection limit FunctionWall device functionality limitation Switch-over from heating mode to cooling mode Heating circuit correctionHumidistatic switch-off Cooling with 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 Application Adjustment Time Sample time TaActuator runtime Example Actuator end position function See also 5.1.2.4 Daytime hot-water temperature button, pg Hot-water production Hot-water tank loading SLPExample Before Example AfterSDC / DHC SDC / DHC SDC / DHC SDC / DHC Quick hot-water connection in cascaded systems Heating Tank priority no heating demandCirculation pump CIR Electrical heating element ELH Solar switch-on differential Solar/Solid fuel/Buffer Solar functionSolar priority mode disabling of heat generator Solar priority mode hot water setpoint controlSolar priority mode buffer setpoint control Solar parallel operationOperation in buffer priority mode Buffer tank function SDC / DHC SLP PLP SLP SF SLP Buffer control mode HC/HWBuffer HC/HW Buffer control mode Loading control Discharge controlExample Set value OFF Tank loading pump with provision tanks onlySDC / DHC Buffer sensor 2 BS2 Buffer sensor 2 BS2 Buffer loading pump extended running timeSolid-fuel boiler minimum temperature limit Solid fuel functionHeat generator solid-fuel cycle disable Tank loading switch-overPrerequisite Solar loading switch-over operation Kspf B Hydraulic buffer relief HBRSetting range OFF, -20 +30 Other system components Global fault message input Global fault message outputTimer External switching modem Connection terminal of variable input 1 2, 3 openHEATING, HEATING, Standby Demand contact System information Bus communication Bus address of central device Address Device type AssignmentTank control mode tank priority operation Heating circuit demandClock synchronisation Room temperature transmission Fault messages/Status indicationsExamples with multiple control devices MK1 Important note for parameter setting 226 EN2H-0221GE51 R0808 Address CD address Assignment Operation with wall device SDW Address CU address AssignmentAutomatic Mode Heating Lowering Automatic Control mode/Function Moon LED Clock LED Sun LED Brief FlashingOFF Flashing Flashing OFFOperation with NTC 20K room temperature sensor Extended access authorisation Function of the cascade parameters Switch-off characteristics Control characteristics Delay, enabling, full load in cascade operationGrouping for base and peak loads ANF118-V2.2 specifications Special function characteristicsAutomatic call-up Input Only executed if Emission measurement not for DHCRelay/function test Modulating mode Single-stage heat generatorStage heat generator 2x single-stage heat generatorsValue Range Meaning DisplayBus test SDC / DHC Fault messages RSC/RS EepromThese fault messages come from automatic stokers and are Additional fault processing Fault type Field CodeHigh LOWFault Message Basic display/fault stack fault messagesOperating Key/Menu Parameter Information Full controller reset Sensor calibrationController time correction Technical data IIIInstallation recommendations Mains voltage lines Safety low-voltage linesSensor resistance values 1 NTC 2 PT VF1VE1 VE2BZ1 BZ2Log Index SDC / DHC SDC / DHC Automation and Control Solutions