Manuals / Honeywell / Household Appliance / Heating System

Honeywell EN2H-0221GE51 R0808 service manual MK1

Models: EN2H-0221GE51 R0808

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Hydraulic Components	SDC / DHC

The following components are connected to the first controller with bus address 10:

•Outside sensor

•Stages 1 and 2 of the burner

•Boiler sensor

•Tank sensor

•Tank loading pump

•Mixed heating circuit pump, mixed heating circuit open/closed and flow sensor of heating circuit 1

•Mixed heating circuit pump, mixed heating circuit open/closed and flow sensor of heating circuit 2

The following components are connected to the second control device with bus address 20:

•Mixed heating circuit pump, mixed heating circuit open/closed and flow sensor of heating circuit 3

•Mixed heating circuit pump, mixed heating circuit open/closed and flow sensor of heating circuit 4

Example 2 Heating system with a two-stage heat generator, two mixed heating circuits and two industrial water loadings (used, for example, for a duplex with one heat generator). The following diagramAFshows the hydraulics of thisDatenbussystem.

	ZG	/	SLP	SF		ZG	/	SLP	SF
	VF1			SF		VF2			SF
	MK1				b	MK2				b
	KF
BR1BR2	a

a Boiler

b Hot-water tank

224	EN2H-0221GE51 R0808

Image 224

Honeywell EN2H-0221GE51 R0808 service manual MK1

Contents

Smile SDC heating and district heating controller EN2H-0221GE51 R0808 Contents SDC / DHC Menu-selection levelControl Functions 114 Hydraulic Components 128 155 171 255 Technical data 250254 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 EM-SET Temperature displays Information Display Condition RemarksOFF Information Display Condition Remarks ON/OFFMC2 ThermostatMC1 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 Returning AccessTime Date menu Timeprograms menu Access Returning Selection of day of the week and cycle Selection of the control circuitSelection of the program 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 menuALL Night-time hot-water temperatureFactory setting 40 C ECO switch-off operation Reduced operationECO ECO, REDHeating system UFHRAD ConvFactory setting Setting Parameter settings Hydraulics menu HydraulicPara Designation Setting range / Setting values Meter 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 CON Direct heating circuit menu Unmixed CircRED 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 ModeVariable inputs and outputs of device series SDC/DHC Switching from SDC to DHCSelection of hydraulic parameter presettings Application Parameter Key/MenuSystem Climate zone Outside temperature disableDesign temperature Summer switch-off Outside temperature riseSystem frost protection Cancelling switch-offOperation without room temperature sensing Operation with room temperature sensing Cycle operationFrost protection function in case of heat generator fault Pump forced operation Start-up protection controlled by weather conditions Heat generator Boiler Heat generator start-up protectionUnlimited start-up protection Heat generator minimum temperature limit Minimum limit based on demandConditional minimum limit Unlimited minimum limitExternal burner switch-off Heat generator sensor control modeBurner switch-off in case of a faulty heat generator sensor Minimum burner runtime Burner enabling in case of a faulty heat generator sensorSwitching Multi-stage heat generator/Switching differential 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 start time Modulation of integral action time TnModulation of runtime 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 Para- Designation meter Range Pre Step Unit SettingReturn temperature limit for hot-water loading 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 Wall device functionality limitation Mixed heating circuits cooling switch-overHeating circuit room frost protection limit Function 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 Actuator runtime Application Adjustment TimeSample time Ta 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 HC/HW Buffer control modeHC/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 functionPrerequisite Heat generator solid-fuel cycle disableTank loading switch-over Solar loading switch-over operation Kspf B Hydraulic buffer relief HBRSetting range OFF, -20 +30 Timer Other system components Global fault message inputGlobal fault message output HEATING, HEATING, Standby External switching modemConnection terminal of variable input 1 2, 3 open Demand contact System information Bus communication Bus address of central device Address Device type AssignmentClock synchronisation Tank control mode tank priority operationHeating circuit demand Examples with multiple control devices Room temperature transmissionFault messages/Status indications 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 LOWOperating Key/Menu Parameter Information Fault MessageBasic display/fault stack fault messages Controller time correction Full controller resetSensor calibration Technical data IIISensor resistance values 1 NTC Installation recommendations Mains voltage linesSafety low-voltage lines 2 PT VF1VE1 VE2BZ1 BZ2Log Index SDC / DHC SDC / DHC Automation and Control Solutions