Smile SDC heating and district heating controller
 EN2H-0221GE51 R0808
 Contents
 SDC / DHC
Menu-selection level
 Control Functions 114
 Hydraulic Components 128
 155
 171
 Technical data 250
254
255
 SDC / DHC
 Software version
Intended use
 Connection conditions
Power supply
Cable installation
Cable cross-sections
 Hot-water temperature greater than 60 C
Grounding and zeroing
 SDC / DHC
 Safety precautions for EMC-compliant installation
 SDC / DHC
 SDC / DHC
 SDC / DHC
 SDC / DHC
 Overview
 Abbreviations
 Operation
Display and operating elements
 Display basic display
 Factory setting
Daytime room temperature button
Setting
Setting range
 Daytime hot-water temperature button Setting
Night-time room temperature button
Factory setting Setting range 2.4
Factory setting 50 C
 Setting range One-time hot-water circuit loading
Operating mode button basic display
 Automatic
Absent
Party
Summer
 Setting Return to the basic display
Absence mode short-term program
 Party mode short-term program
P1 P2, P3
 Automatic mode
 Enabling
Display 2.5.4 Disabling / enabling default program P2 to P3
Disabling / enabling default programs P2 to P3
Manual summer operation excluding heating operation
 Continuous heating operation
Continuous lowering operation
 Switching time programs / Holiday programs button
 Holiday mode
 Factory setting Current date
System information button
 Operating overview
 Temperature displays Information Display Condition Remarks
OFF
EM-SET
 Information Display Condition Remarks
ON/OFF
 Thermostat
MC1
MC2
 Operating states
Information Display Condition
 Information Display Condition
 Clock
 Information Display Condition
 Manual mode / Emission measurement button
Cancellation Press
 SDC / DHC
 Access to the technician / OEM area
Procedure
 2.10 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 menu
Returning
 Timeprograms menu Access Returning
 Selection of the control circuit
Selection of the program
Selection of day of the week and cycle
 Switch-off time
 Cycle temperature
 Switching time programming programs P2 and P3 disabled
DHW
 Default switching time program P1 for heating and hot water
Default program P1
 Switching time programming program P2 and P3 enabled
 Default program P2
Default program P3
 Copying switching time programs days Source day Target day
Calling up the copy function days
 Calling up the copy function heating circuits
 Block programming
 SDC / DHC
 Copying heating circuits
DHW
 Reloading default programs
 SDC / DHC
 Reloading default programs
 Switching time programs P2 and P3 enabled
 Factory setting German
System Parameters menu Access Returning
Setting values DE
System information button, pg Language selection
 Switching time programming
Set values Factory setting Effects
Control mode selection
Time program
 Setting range
 Individualised operating mode for each heating circuit
 Factory setting 20 C
Quick increase in outside temperature
Slow increase in outside temperature
Parameter reset
 Complete reset
DHW menu
 Night-time hot-water temperature
Factory setting 40 C
ALL
 ECO
ECO switch-off operation
Reduced operation
ECO, RED
 RAD
Heating system
UFH
Conv
 Parameter settings Hydraulics menu Hydraulic
Para Designation Setting range / Setting values Meter
Factory setting Setting
 Mixed heating
 Electrical heating circuit
 Buffer sensor
 Setting System parameters menu System
 ALL
 OFF, on
 SDC/DHC
RTC
SDC, DHC
OEM
 Hot-water circuit menu DHW
 SDC / DHC
 Auto
 Direct heating circuit menu Unmixed Circ
RED
CON
 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 Reset
 District 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
 OFF-ON-OFF
Data bus menu BUS
Relay test menu Relay Test
STOP-OPEN-CLOS Stop
 Error messages menu Alarm
 Error messages 2 menu Alarm
Sensor calibration menu Sensor ADJ
 Control Functions
 Example
 SLP, DKP
SLP
VF2
DKP, VA1 VA2
 Sslp
Switching time program enabling
FKF
Slvf
 Suppressing the cycle temperature on time program level
Enabling Separate Control Mode
 Switching from SDC to DHC
Selection of hydraulic parameter presettings
Variable inputs and outputs of device series SDC/DHC
 Application
 Key/Menu
System
Parameter
 Outside temperature disable
Design temperature
Climate zone
 Summer switch-off
Outside temperature rise
 Cancelling switch-off
Operation without room temperature sensing
System frost protection
 Operation with room temperature sensing
Cycle operation
 Frost protection function in case of heat generator fault
 Pump forced operation
 Heat generator Boiler Heat generator start-up protection
Unlimited start-up protection
Start-up protection controlled by weather conditions
 Conditional minimum limit
Heat generator minimum temperature limit
Minimum limit based on demand
Unlimited minimum limit
 Heat generator sensor control mode
Burner switch-off in case of a faulty heat generator sensor
External burner switch-off
 Burner enabling in case of a faulty heat generator sensor
Switching Multi-stage heat generator/Switching differential
Minimum 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 relief
 Resetting
 Operation for modulating burners
 Modulation of P part Xp
Modulation of sample time Ta
 Modulation of integral action time Tn
Modulation of runtime
Modulation of start time
 Modulation of start power
 OpenTherm
OpenTherm logo Electrical connection
 Set values OFF
Two measuring points in the combustion chamber
External heat generator cut-off
Dissipation into hot-water tank
 Discharge to heating circuits
Exhaust gas temperature monitoring
Display of flue gas temperature only
Heat generator lock if limit value is exceeded for set time
 Recommended setting
Burner counter mode
 Para Designation Range Presetti Step Unit Meter Increase
Heat generation, heat exchanger, district heating
 1 On/Off operation of the district heating valve
Continuous heat exchanger valve control
 Para Designation Range Presetti Step Unit Meter
 District heating return temperature limit
 SDC / DHC
 Range Pre Step Unit Setting
Return temperature limit for hot-water loading
Para- Designation meter
 Hot-water pre-regulator with district heating systems
 Mode of operation Hot-water pre-control
 Quick hot-water control
New parameters
 SDC / DHC
 SDC / DHC
 Circulation pump control mode
Conditional parallel operation for mixed heating circuits
 Switch-off of district heating control
Return interval flushing
 Charging pump CHP
 Primary pump
Boiler circuit pump
 Return increase
 Return maintenance through controlled feed water addition
Bypass pump RBP
 Indirect 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 setting
 Heating circuit constant temperature control
Fixed-value control
 No room sensor with the following conditions
 Heating circuit room factor
 Switch-on/switch-off optimisation
Heating circuit room controller
 Parameter settings for the switch-on optimisation in the HC
 Parameter 44 min. jump back temperature
Activation of switch
Parameter 41 switch-on optimisation, 03 adaptation restart
On optimisation
 Parameter 46 pre-heating time at 0C
Switch-on optimisation with room sensor adaptation
Switch-on optimisation without room sensor
Parameter 47 lowering ramp
 Room setpoint ramp
Heating limit function
 Example
 Mixed heating circuits cooling switch-over
Heating circuit room frost protection limit Function
Wall device functionality limitation
 Switch-over from heating mode to cooling mode
Heating circuit correction
 Humidistatic switch-off
Cooling with humidistatic switch-off
 Heating 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 Ta
Actuator runtime
 Example
 Actuator end position function
 Example Before
See also 5.1.2.4 Daytime hot-water temperature button, pg
Hot-water production Hot-water tank loading SLP
Example After
 SDC / DHC
 SDC / DHC
 SDC / DHC
 SDC / DHC
 Quick hot-water connection in cascaded systems
 Heating
Tank priority no heating demand
 Circulation pump CIR
 Electrical heating element ELH
 Solar switch-on differential
Solar/Solid fuel/Buffer Solar function
 Solar priority mode buffer setpoint control
Solar priority mode disabling of heat generator
Solar priority mode hot water setpoint control
Solar parallel operation
 Operation in buffer priority mode
 Buffer tank function
 SDC / DHC
 SLP
 PLP
 SLP SF
 SLP
 Buffer control mode
HC/HW
Buffer HC/HW
 Buffer control mode
 Loading control
Discharge control
 Example
 Set value OFF
Tank loading pump with provision tanks only
 SDC / DHC
 Buffer sensor 2 BS2 Buffer sensor 2 BS2
Buffer loading pump extended running time
 Solid-fuel boiler minimum temperature limit
Solid fuel function
 Heat generator solid-fuel cycle disable
Tank loading switch-over
Prerequisite
 Solar loading switch-over operation
 Kspf B
Hydraulic buffer relief HBR
 Setting range OFF, -20 +30
 Other system components Global fault message input
Global fault message output
Timer
 External switching modem
Connection terminal of variable input 1 2, 3 open
HEATING, HEATING, Standby
 Demand contact
 System information
 Bus communication Bus address of central device
Address Device type Assignment
 Tank control mode tank priority operation
Heating circuit demand
Clock synchronisation
 Room temperature transmission
Fault messages/Status indications
Examples 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 Assignment
 Automatic Mode Heating Lowering Automatic
 OFF Flashing
Control mode/Function Moon LED Clock LED Sun LED
Brief Flashing
Flashing OFF
 Operation 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 operation
 Grouping for base and peak loads ANF118-V2.2 specifications
Special function characteristics
 Automatic call-up
 Input Only executed if
Emission measurement not for DHC
 Relay/function test
 Stage heat generator
Modulating mode
Single-stage heat generator
2x single-stage heat generators
 Value Range
Meaning Display
 Bus test
 SDC / DHC
 Fault messages
 RSC/RS
Eeprom
 These fault messages come from automatic stokers and are
 High
Additional fault processing
Fault type Field Code
LOW
 Fault Message
Basic display/fault stack fault messages
Operating Key/Menu Parameter Information
 Full controller reset
Sensor calibration
Controller time correction
 Technical data
III
 Installation recommendations Mains voltage lines
Safety low-voltage lines
Sensor resistance values 1 NTC
 VE1
2 PT
VF1
VE2
 BZ1
BZ2
 Log
 Index
 SDC / DHC
 SDC / DHC
 Automation and Control Solutions