Heating Controller SDC District Heating Controller DHC 43 SERVICE MANUAL EN2H-0221GE51 R1105
SDC / DHC 43 Service Manual EN2H-0221GE51 R1105
SDC / DHC 43 Service Manual EN2H-0221GE51 R1105
Contents SDC / DHC 43 Contents 1 SOFTWAREVERSION...5 2 SAFETY INSTRUCTIONS...6 2.1 Application...6 2.2 Conditions for start-up...6 2.2.1 Do not separate the controller from the mains...6 2.2.2 Electric installation...6 2.2.3 Safety measures for EMC-compatible installation...7 2.2.4 Cable dimensions...9 2.2.5 Maximum cable length...9 2.2.6 Cable installation...9 2.2.7 Cabinet earth and ground...9 2.3 Domestic hot water higher than 60 C...10 2.4 Connecting accessories...10 2.5 Service and cleaning...10 3 DHC 43 / SDC OVERVIEW...11 4 ABBREVIATIONS...12 5 OPERATION...13 5.1 User Interface...13 5.1.1 Basic display...13 5.1.2 Operating elements...14 5.1.2.1 Rotary Pushbutton (Press/Turn)...14 5.1.2.2 "Daytime Room Temperature" Key...14 5.1.2.3 "Night-time Room Temperature" Key...15 5.1.2.4 "Daytime DHW Temperature" Key...15 5.1.2.5 "Operating Mode" Key (Basic display)...16 5.1.2.6 "Heating Characteristic" Key...22 5.1.2.7 "System Information" Key...23 5.1.2.8 "Manual Mode" / "Emission Measurement" Key...28 5.2 Parameter Input...29 5.3 Automatic exit time...29 5.4 Menu Selection...30 5.4.1 Time-Date Menu...32 5.4.2 Time programs Menu...32 5.4.2.1 Control Circuit Selection...33 5.4.2.2 Program Selection...33 5.4.2.3 Weekday and Cycle Selection...33 5.4.2.4 Programming Switching Times and Cycle Temperatures...33 5.4.3 System Parameter Menu...43 5.4.3.1 Language Selection...43 5.4.3.2 Time Programs...43 5.4.3.3 Control Mode...45 5.4.3.4 Summer Switch-off (heating limit)/ Heating Limit...46 5.4.3.5 Parameter Reset...47 5.4.3.6 Full Reset...47 5.4.4 Domestic Hot Water Menu...48 5.4.4.1 DHW Economy Temperature...48 5.4.4.2 Legionella Protection-Day...48 5.4.5 Unmixed Circuit / Mixing Circuit 1 / Mixing Circuit 2 Menu...48 5.4.5.1 Reduced Mode...48 5.4.5.2 Heating System...49 5.5 Malfunction Messages...50 i EN2H-0221GE51 R1105
SDC / DHC 43 Contents 5.6 Parameter Settings...51 5.6.1 Hydraulic Menu...51 5.6.2 System Parameter Menu...53 5.6.3 Domestic Hot Water Parameter Menu (DHW)...54 5.6.4 Direct Heating Circuit Menu...55 5.6.5 Mixing circuit 1 / Mixing circuit 2 Menus...56 5.6.6 Heat Generator Menu...57 5.6.7 District Heating Menu...59 5.6.8 Return control Menu...59 5.6.9 Solar Menu...59 5.6.10 Solid Fuel Menu...60 5.6.11 Buffer Menu...60 5.6.12 Menu "Cascade"...60 5.6.13 Data Bus Menu...61 5.6.14 Relay Test Menu...61 5.6.15 Malfunction Messages Menu...62 5.6.16 Sensor Calibration Menu...62 6 CONTROL FUNCTIONS...63 6.1 Adjusting the hydraulic parameters...63 6.1.1 Connection and settings table...64 6.2 Switching Time Program Enabling...64 6.3 Suppressing the cycle temperature on Time program level...64 6.4 Enabling of Separate Control Mode...65 6.5 Temperature display in Fahrenheit...65 6.6 Selection of Hydraulic Parameter Presettings...65 6.7 The Variable Inputs and Outputs of the Smile controllers...66 6.8 General s and their Operation...66 6.8.1 Outside Temperature Measurement...66 6.8.1.1 Building Type...66 6.8.2 Heating Circuit Outside Temperature Assignment...66 6.8.3 Climate Zone...67 6.8.4 Summer Switch-off...67 6.8.5 System Frost Protection...68 6.8.6 Anti-blocking Protection...69 7 HYDRAULIC COMPONENTS AND THEIR FUNCTIONS...70 7.1 Heat Generatior: Boiler...70 7.1.1 Heat Generator Start-up Protection...70 7.1.2 Heat Generator Minimum Temperature Limit...70 7.1.3 Heat Generator Maximum Temperature Limit...71 7.1.4 Heating circuits minimum temperature limit...71 7.1.5 Heat Generator Sensor Operating Modes...71 7.1.6 Minimum Burner Run time...72 7.1.7 Multi-stage Heat Generator/ Switching Differential...72 7.1.8 Switching for modulating burners...75 7.1.9 Modulation P-band (Xp)...76 7.1.10 Modulation sample time Ta...76 7.1.11 Modulation integral action time Tn...76 7.1.12 Modulation running time...76 7.1.13 Modulation starting time...76 7.1.14 Modulation starting load...77 7.1.15 When to apply boiler sensor 2...77 7.1.16 External heat generator disable...77 7.1.17 Heat generator forced dissipation...78 7.1.18 Flue gas temperature monitoring...78 7.2 Heat Exchanger Heat Generator, district heating...79 7.2.1 District Heating Valve On / Off Mode (district heating)...79 7.2.2 Continuous Heat Exchanger Valve Control (district heating)...80 EN2H-0221GE51 R1105 ii
Contents SDC / DHC 43 7.2.3 District Heating Return Temperature Limit (district heating)...81 7.2.4 Return Temperature Limitation for DHW Loading (district heating)...82 7.2.5 Hot-water pre-control for District heating systems...82 7.2.6 Mode of operation hot-water pre-control...84 7.2.7 Operating principle HW operating mode External operation...84 7.2.8 Conditional parallel operation for mixing circuits...84 7.2.9 Operating mode circulation pump...85 7.2.10 Deactivation district heating control...85 7.2.11 Return Interval flushing (district heating)...85 7.2.12 Heat meter for additional limitation according to the volume flow or thermal output (district heating)...86 7.2.13 Charging pump (CHP)...86 7.2.14 Primary pump...87 7.2.15 Boiler circuit pump...87 7.2.16 Parallel heat generator enabling (PWF)...88 7.2.17 Return control...88 7.2.17.1 Bypass pump (RBP)...89 7.2.17.2 Return control through controlled flow mixing...89 7.2.17.3 Indirect return control...89 7.3 Heating Circuit...90 7.3.1 General Heating Circuit s...90 7.3.1.1 Heating Characteristic Curve...90 7.3.1.2 Setting of the Heating Characteristic Curve...91 7.3.1.3 Heating Circuit Reduced Mode...92 7.3.1.4 Heating system (exponent)...93 7.3.1.5 Heating Circuit Temperature Limitation...93 7.3.1.6 Heating Circuit Parallel Shift...94 7.3.1.7 Heating Circuit Pump extended running time...94 7.3.1.8 Screed function...94 7.3.2 Heating Circuit Constant Temperature Control...96 7.3.3 Fixed Value Control...96 7.3.4 Assessment of the Room Temperature / Room Influence...97 7.3.4.1 Heating Circuit with Room influence...97 7.3.4.2 Heating Circuit Room Factor...98 7.3.4.3 Room Controller Heating Circuit...98 7.3.4.4 Heating curve adaptation heating circuit...98 7.3.4.5 Heating Circuit Switch-on Optimisation...99 7.3.4.6 Heating Limit...100 7.3.4.7 Heating Circuit Room frost protection Limit...101 7.3.4.8 Room Thermostat (Room Temperature Maximum Limit)...101 7.3.5 Domestic Hot Water Heating...105 7.3.5.1 DHW Tank Loading (DHWP)...105 7.3.5.2 Circulation pump (CIR.)...108 7.3.6 Solar / Solid Fuel / Buffer...109 7.3.6.1 Solar Loading Pump (SOP)...109 7.3.6.2 Buffer Loading Pump (BULP)...112 7.3.6.3 Solid Fuel Loading Pump (SFP)...119 7.3.7 Solar loading switchover...120 7.3.8 Solar forced dissipation...121 7.3.9 Hydraulic buffer relief (HBR)...122 7.3.10 Other System Components...122 7.3.10.1 Global Malfunction Message input...122 7.3.10.2 Global Malfunction Message output...123 7.3.10.3 Timer...123 7.3.10.4 External switching modem...123 7.3.10.5 External information...124 7.3.10.6 Demand Contact...124 7.3.11 Bus Communication...125 7.3.11.1 Controller Bus Address...125 7.3.11.2 Control functions via the bus...126 iii EN2H-0221GE51 R1105
SDC / DHC 43 Contents 7.3.11.3 Operation of wall devices...129 7.3.12 Cascading of heat generators in the bus system...132 7.3.12.1 General description of cascading of control devices...132 7.3.12.2 s of the cascade parameter...133 7.3.12.3 Mode of operation of cascade control...133 7.3.13 Start-up, Maintenance and Troubleshooting Help...135 7.3.13.1 Automatic set functions...135 7.3.13.2 Emission Measurement (not for DHC43)...135 7.3.13.3 Relay / Test...136 7.3.13.4 Malfunction Messages...137 7.3.13.5 Sensor Calibration...139 7.3.13.6 Controller global reset...139 7.3.13.7 Controller time correction...139 8 TECHNICAL DATA...140 8.1 General...140 8.1.1 Installation recommendations...140 8.2 Sensor Resistance Values...141 8.3 Sensor measuring ranges...141 8.4 Digital inputs...142 EN2H-0221GE51 R1105 iv
Safety Instructions SDC / DHC 43 1 Softwareversion Please use this documentation in conjunction with softwareversion V2.1 of your controller. The version will be displayed for about 8 s when the controller is connected to the mains. If you may be using an older version, please contact your heating specialist. 5 EN2H-0221GE51 R1105
SDC / DHC 43 Safety Instructions 2 Safety Instructions 2.1 Application The Smile controller family DHC/SDC is designed exclusively for the control of warm water heating and district heating systems including domestic hot water control. These systems should not exceed a flow temperature of 120 C. 2.2 Conditions for start-up 2.2.1 Do not separate the controller from the mains CAUTION The heating installation must be completed and filled with water in order to prevent the pumps from running dry and to avoid damage for the boiler. The controll system must be installed according to the mounting instructions. All electrical connections (power supply, burner, valve actuator, pumps and sensors) must be carried out according to the local rules and standards and must comply with the attached wiring diagrams. If a floor heating system is connected, a limiting thermostat must switch off the pump if the flow temperatures are too high. The heating specialist must check the complete installation before switching on the controller. IMPORTANT NOTE! The actual time and date are already adjusted from the factory and backed up by a battery. There is a basic time program already activated and the control functions for standard heating systems with low temperature boilers are pre-adjusted. If this happens the back-up battery will be unnecessarily stressed. Also the frost protection functions of the controller will be out of order. 2.2.2 Electric installation All electrical connections must be carried out by qualified personnel. EN2H-0221GE51 R1105 6
Safety Instructions SDC / DHC 43 2.2.3 Safety measures for EMC-compatible installation Cables under mains power must always be laid separately from sensor and data bus cables, with a minimum distance of 2 cm between the cables. Cable crossings are allowed. 15 cm Mains 230 V~ Data bus cable 12 V~ 2cm For control devices powered through a separate mains connection, separation between power cables and sensor or bus cables must be maintained under all circumstances. If cable ducts are used, these ducts must be fitted with separating webs. When installing control or room devices, a minimum distance of 40 cm must be maintained between the devices and other electrical systems emitting electromagnetic radiation, e.g. contactor switches, motors, transformers, dimmers, microwave and TV products, loudspeakers, computers, mobile phones, etc.. 40 cm Room devices and central devices must be separated by a distance of at least 40 cm. Several central devices connected to the data bus can be installed immediately next to each other. The mains power connection of the heating system (boiler control panel control device) must be laid out as an independent circuit, to which neither fluorescent lamps nor other possible sources of interference may be connected or connectable. 7 EN2H-0221GE51 R1105
SDC / DHC 43 Safety Instructions Circuit breaker 16 A Heating room emergency switch Heating room and power sockets must be connected to separate circuit! Room device(s) Heat generator Shielded cables must be used for the data bus lines. Recommended construction: see Technical Data, page 139. The cable shield must be grounded on only one side at the ground connector, e.g. at the metal enclosure of the heat generator, ground clamp, etc. Multiple grounding of any one cable is not allowed (ground loop noise). Do not ground here! Central device Ground EN2H-0221GE51 R1105 8
Safety Instructions SDC / DHC 43 Double grounding is not allowed in star-shaped data bus systems. The ground connection must be installed on side only, at the neutral point! Shielding 2-core data bus cable Terminal block Junction box The external sensor must not be installed in the vicinity of transmitter or receiver units (e.g. on garage walls close to a receiver of a remote-control garage door opener, ham radio antennas or in direct proximity to major transmission stations, etc.). 2.2.4 Cable dimensions 1.5 mm² for all 230 V cable (power supply, burner, pumps, actuators). 0.5 mm² for sensors, selectors, bus and analogue in- and outputs. 2.2.5 Maximum cable length Sensors selectors and analogue inputs A maximum cable length of 200 meters is recommended. Longer distances are possible but increase the risk of interferences. 2.2.6 Cable installation 2.2.7 Cabinet earth and ground Relay outputs Unlimited cable length. Bus connections A maximum cable length of 100 meters is strongly recommended. Cables for 230 V must be installed separate from low voltage (sensor selector bus) cables. Please install and connect the controllers according to local rules and standards! 9 EN2H-0221GE51 R1105
SDC / DHC 43 Safety Instructions 2.3 Domestic hot water higher than 60 C 2.4 Connecting accessories Please note that in the following cases there is a danger at hot water tabs (kitchen, bath). In order to avoid scalding please mix enough cold water. Anti legionella automatic If the anti legionella automatic is activated, the domestic hot water will automatically be heated up to temperatures around 65 C order to kill legionella bacteria in the hot water system. Manual operation / Emission measurement In the manual mode / emission measurement mode the domestic hot water can be heated up to the maximum possible boiler temperature because the burner and all pumps are switched on and the valves will be completely opened. Also here there is the danger of scalding at all warm water tabs in the building. Please mix enough cold water or switch the domestic hot water loading pump manually off (if there is a switch at the pump). Heating and domestic hot water are not temperature controlled in these modes. These modes are especially used by the emission measurement specialist or by the installer in case the controller is defect. The high water temperatures can however be avoided if the boiler thermostat is adjusted to a max. of 60 C. CAUTION According to VDE 0730 the power supply for the controller must have a separate main switch for life and neutral. Please follow local rules and standards for cabinet earth and ground! 2.5 Service and cleaning As soon as there is power supply at the terminals 21, 22, 2, 6, 12 and 18 also the terminal rows X3 and X4 will carry 230 V connections! External switches must be installed if a manual switch function is desired for pumps. All accessories (sensors, selectors, etc.) must be connected according to the attached wiring. The controller is service free. The unit can be cleaned with a moist cloth from the outside. EN2H-0221GE51 R1105 10
Overview SDC / DHC 43 3 DHC 43 / SDC Overview This document describes the Smile controller family DHC/SDC for panel installation and wall mounting. The product is available in the following variations for use as a built-in controller and as a wall-mounted controller: Type Number of output relays 2 nd burner stage or district heating valve closed 1 st burner stage Direct circuit variable output 3 Mixing circuit 1 Mixing circuit 2 DHW loading pump Variable output 2 Variable output 2 SDC 3-10 3-Rel. x x x DHC 3-40* 3-Rel x SDC 6-20 6-Rel. x x x x SDC 8-21 6-Rel.+ 2 Variable x x x x x x SDC 9-21 7-Rel.+ 2 Variable x x x x x x x SDC 12-31 10-Rel.+ 2 Variable x x x x x x x x DHC 43-1* 7-Rel x x x x x DHC 43-2* 7-Rel.+ 2 Variable x x x x x x X DHC43-3* 10-Rel. + 2 Variable x x x x x x x x * District heating versions. 11 EN2H-0221GE51 R1105
SDC / DHC 43 Operation 4 Abbreviations The following abbreviations are used in this document and in the control unit display: ABS Reduced mode PF Buffer tank sensor (upper) AF Outdoor sensor PF 2 Buffer tank sensor 2 (lower) AF 2 Outdoor sensor 2 RG Room device for room temp. measurem. AGF Flue gas temperature sensor RBP Return bypass pump AT Outside temperature PLP Buffer loading pump BCP Boiler circuit pump RBP Return bypass pump BS Buffer sensor (upper) RED Reduced mode BS2 Buffer sensor (lower) RLP Return flow pump BULP Buffer loading pump SBUS Solar buffer sensor BUS System data bus SD I Switching differential I BZ1 Op. hours counter burner stage 1 SD II Switching differential II BZ2 Op. hours counter burner stage 2 SF Storage tank sensor CHP Charging pump SFD Solar forced dissipation CIR Circulation pump SFB Solid-fuel buffer sensor DHC Direct heating circuit SFP Solid-fuel loading pump (D)HW (Domestic) hot water SFS Solid-fuel boiler sensor DHWP Hot water loading pump SLP Storage tank loading pump DK Direct heating circuit SLV Solar loading switch-over DKP Direct heating circuit pump SLVS Sensor solar loading switch-over ECO Switch-off mode SOP Solar loading pump ELH Electric heating element SPFS Solar panel flow sensor FKF Solid-fuel boiler sensor SPRS Solar panel return sensor FPF Solid-fuel buffer sensor SSP Stratified storage pump FR Fixed-value regulation VA Variable output (general) FSP Solid-fuel loading pump VA/VO1 Variable output 1 HBR Hydraulic buffer relief VA/VO2 Variable output 2 IMP Pulse input VE/VI Variable input (general) KP Boiler circuit pump VE/VI1 Variable input 1 CC Constant control VE/VI2 Variable input 2 KRLF Solar panel return flow sensor VE/VI3 Variable input 3 KSPF Solar tank / buffer sensor VF1 Flow sensor mixer circuit 1 KVLF Solar flow sensor VF2 Flow sensor mixer circuit 2 MIMO Mixer motor PWF Parallel heat generator enabling MK/MC Mixer heating circuit WEZ Heat generator MKP Mixer circuit pump WF/KF Heat generator sensor P1 Switching time program ZKP Circulation pump P2 Switching time program ZUP Charging pump P3 Switching time program EN2H-0221GE51 R1105 12
Operation SDC / DHC 43 5 Operation 5.1 User Interface 5 1 6 2 3 4 7 8 9 11 10 1 "Manual mode" key / "Emission Measurement" key (not applicable for district heating controllers) 2 "Operating mode" key for permanent and temporary operating modes (Basic display) 3 "Heating characteristics" key 4 "Information" key for the display of temperatures and operating statuses 5 Multi-functional Display 6 Cover clip for the service jack 7 "Daytime room temperature setpoint" key 8 "Night-time room temperature setpoint" key 9 "DHW daytime temperature setpoint" key 10 Rotary pushbutton (push and turn) 11 Operating modes symbols 5.1.1 Basic display Date Time Active operating mode Operating modes symbols MO. 18.MAR. 01 11.47 40.0 oc æ ç è é ê ë ì í Heat generator temperature The display illumination is activated with every push of a key, respectively the rotary pushbutton and switches off after a longer periode of inactivity. 13 EN2H-0221GE51 R1105
SDC / DHC 43 Operation When the controller is first started or after a power cut a segment test + fault diagnosis is carried out. After this test the software version and the controller type is displayed. In the automatic mode the basic display shows the weekday, the date, the time and the heat generator temperature. Depending on the adjusted operating mode other information will be displayed. Active heating limits will be shown with the "umbrella"icon, frost protection with the "crystal" icon. 5.1.2 Operating elements 5.1.2.1 Rotary Pushbutton (Press/Turn) ð By pressing the rotary pushbutton once, you can: Confirm inputs/values By prolonged pressing (ca. 3 s) the rotary pushbutton, you can: Shift to the menu selection level Get one menu level higher By turning the rotary pushbutton, you can: Change values (clockwise increases values, counter-clockwise decreases values) Browse through menus 5.1.2.2 "Daytime Room Temperature" Key This key sets the room temperature setpoint in the automatic program during the heating cycles as well as during the PARTY and HEATING operating modes. In control mode 1 the set point is identical for all the heating circuits. In control mode 2 the setpoint can be individual for all circuits. To change the control mode, see 5.4.3.3 Control Mode section. NOTE! These setpoints are the starting values for the individual temperature settings during the heating cycles (= cycle temperatures) in the switching time menu. If these values differ from the starting value, they are being corrected with the Requisite amount of the adjustment if a subsequent adjustment of the setpoint is made. If wall modules are connected they always show the Requisite setpoint of their corresponding heating circuit on their display. ROOM-DAY 20.0 oc æ ç è é ê ë ì í Setting: Press the "daytime room temperature" key. Set the flashing room temperature default value by turning the rotary pushbutton î to the desired value. Confirm the set value by pressing either the "daytime room temperature" key key or the rotary pushbutton î. Alternatively the value can be acquired by automatic exit after the set INFO-TIME (see 5.1.2.7 "System Information). EN2H-0221GE51 R1105 14
Operation SDC / DHC 43 Factory setting 20 C Setting range 5... 30 C 5.1.2.3 "Night-time Room Temperature" Key This key sets the reduced room temperature setpoint in the automatic program between the heating cycles as well as during the ABSENT and REDUCED operating modes. In control mode 1 the set point is identical for all the heating circuits. In control mode 2 the setpoint can be individual for all circuits. To change the control mode, see "Control Mode"section. NOTE! If wall modules are connected they always show the Requisite setpoint of their corresponding heating circuit on their display ROOM-NIGHT 16.0 oc æ ç è é ê ë ì í Setting: Press the "night-time room temperature" key. Set the flashing room temperature default value by turning the rotary pushbutton î to the desired value. Confirm the set value by pressing either the "night-time room temperature" key or the rotary pushbutton î. Alternatively the value can be acquired by automatic exit after the set INFO-TIME (see 5.1.2.7 "System Information). Factory setting 16 C Setting range 5... 30 C 5.1.2.4 "Daytime DHW Temperature" Key NOTE! DHW DAY 50.0 oc æ ç è é ê ë ì í This key sets the DHW temperature setpoint during the DHW operating times in the automatic program as well during the PARTY and HEATING operating modes. This setting value applies also for domestic hot water only mode (manual summer mode). This setpoint is the starting value for the individual temperature setting during the DHW cycles (= cycle temperatures) in the switching time menu. If this value differs from the starting value, they are being corrected with the Requisite amount of the adjustment if a subsequent adjustment of the setpoint is made. Setting: Press the "daytime DHW temperature" key. Set the flashing room temperature default value by turning the rotary pushbutton î to the desired value. Confirm the set value by pressing either the"daytime DHW temperature" key or the rotary pushbutton î. Alternatively the value can be acquired by automatic exit after the set INFO-TIME (see 5.1.2.7 "System Information). Factory setting 50 C 15 EN2H-0221GE51 R1105
SDC / DHC 43 Operation Setting range Hot water economy temperature... water heater maximum temperature limit (service setting) Single DHW loading I TIME DHW 0.0 min æ ç è é ê ë ì í Pushing the"daytime DHW temperature" key longer than 3 s will lead to the single DHW loading function. This function will override the actual time program. The operator will see an adjustable time with the following meaning: 0 s: the single loading function will be carried out only once. The setpoint is the DHW day setpoint. As soon as the setpoint is reached this function is disabled again. >0 s: The DHW day setpoint is maintained for the adjusted time interval. The time interval can be adjusted between 0 and 240 min with the rotary pushbutton. 5.1.2.5 "Operating Mode" Key (Basic display) The desired operating mode can be selected with this key. The operating mode appears in plain text, while at the same time a cursor at the bottom of the display indicates the relevant operating mode symbol. The selected operating mode applies for all heating circuits in control mode 1. In control mode 2, every heating circuit can be assigned with its own operating mode. To change the control mode see 5.4.3 System Parameter Menu. Overview of the Operating Modes Arrow on the Symbol Program Display in basic mode Setting æ Holiday Return Date Absence P1 (2, 3), Return ç time è Party P1(2,3), Party End Time é Automatic P1 (2, 3) EN2H-0221GE51 R1105 16
Operation SDC / DHC 43 ê Summer P1 (2, 3) ë Constant Mode Heating ì Constant Mode Reduced í Constant Standby Mode Setting: Press the "operating mode" key. Set the flashing operating mode by turning to the desired operating mode. Confirm the value by pressing the "operating mode" key or the rotary pushbutton î. In case of short-term operating modes (Holiday, Absence, Party) set the desired target value by turning the rotary pushbutton î and confirm the set value as described above. Alternatively the value can be acquired by automatic exit after the set INFO-TIME (see(see 5.1.2.7 "System Information). Return to the basic display by keeping the "operating mode" key pressed for about 3 s. Return to the basic display By keeping the key pressed for about 3 seconds. 5.1.2.5.1 Holiday Mode (Short-term Program) HOLIDAY TIL By means of this program the heating and domestic hot water (DHW) can be switched off with frost protection for the whole duration of the holiday. 18.20 24.09 æ ç è é ê ë ì í Application Long absence during the heating season 17 EN2H-0221GE51 R1105
SDC / DHC 43 Operation Control during the holiday mode If outdoor temperatures are below the frost limit, the heating circuits without wall modules are controlled at a roomsetpoint of 3 C with wall modules are controlled to their individual frost protection limit (see mixing circuit parameter 8: room frost protection limit) Setting Terminate holiday mode Factory setting Setting range Display See 5.1.2.5 "Operating Mode" Key (Basic display) An active holiday mode can be terminated for an early return. Simply press the "operating mode" key and adjust to automatic. Current date Current date... Current date + 250 days An active holiday program appears on the basic display with the indication of the return date. 5.1.2.5.2 Absence Mode (Short-term Program) ABSENT TIL 20.10 01.10 æ ç è é ê ë ì í Application Setting Terminate absence mode Factory setting Setting range By means of this program the heating can be temporarily switched off in case of a brief period of absence. During the period of absence all the heating circuits are controlled according to the specified reduced room temperature. At the expiry of the set time the heating circuits return automatically to the operating mode that was active before the absence program. Short-term programs like Party or Holiday will be skipped during this mode. Short-term absence within the heating season See 5.1.2.5 "Operating Mode" Key (Basic display) An active absence mode can be terminated for an early return. Simply press the "operating mode" key and adjust to automatic. P1 from the time of activation (the next switch on time leads back to automatic mode) P1 (absent up to the next switch-on time) 0.5 hours from the activation... 24 hours from the activation P1 (P2, P3): Program-controlled restart of the automatic mode. After activating the REDence program the heating is stopped until the next switch-on time of the current automatic program P1 (as well as P2 or P3 if enabled). 0,5... 24h: The set time periode is added on the basis of the current time and represents the return time. When calling the REDence program again, the last set value is saved and used as the new default value. Display An active absence program appears on the basic display with the indication of the return time. EN2H-0221GE51 R1105 18
Operation SDC / DHC 43 5.1.2.5.3 Party Mode (Short-term program) PARTY TIL 20.10 02.30 æ ç è é ê ë ì í Application Setting Terminate party mode Factory setting Setting range This program provides for a one-time intermediate heating of all the heating circuits up to a specified time and skips completely or in part a forthcoming or an already active reduced cycle. At the expiry of the set time the heating circuits return automatically to the operating mode that was active before the party program. Short-term programs like ABSENCE or HOLIDAY will be skipped during this mode. One-time unscheduled extension of the heating or intermediate heating during reduced mode See 5.1.2.5 "Operating Mode" Key (Basic display) An active party mode can be terminated for an early return. Simply press the "operating mode" key and adjust to automatic. P1 after activation (the next switch on time leads back to automatic mode) P1 (Party mode up to the next switch-on time), or 0.5 hours from the activation... 24 hours from the activation P1 (P2, P3): Program-controlled restart of the automatic operation. After activating the party program the heating mode is continued until the next switch-off time of the current automatic program P1 (as well as P2 or P3 if enabled). 0,5... 24h: The set time periode is added on the basis of the current time and represents the return time. When calling the party program again, the last set value is saved and used as the new default value. Display An active party program appears on the basic display with the indication of the duration of the party. 5.1.2.5.4 Automatic Mode FR. 21.SEP.01 13.15 58.0 oc æ ç è é ê ë ì í In automatic mode automatic time programs with various heating times are available. The standard time programs set at the factory can be overwritten if necessary with one s own switching times (see 5.4.2 Time programs Menu). If necessary, up to three different switching programs can be utilized (see 5.4.3.2 Time Programs) All three automatic programs have for each weekday up to three heating cycles per circuit with its own switch-on time, switch-off time and cycle temperature. In case of heating circuits the last one refers to the room temperature, while in case of domestic hot water circuits it refers to the water heater temperature. If standard programs are used, these are preset at the factory with one or two heating cycles. (An overview of the standard programs is provided in the description of the switching time programming.) NOTE! The automatic programs P2 or P3 can be selected only if they were enabled in the System Paramete Menu (Parameter 2 Time Program = P1-P3). If they are not enabled, only Program P1 is active. 19 EN2H-0221GE51 R1105
SDC / DHC 43 Operation Application Setting Terminate automatic mode Municipial buildings (schools, administration etc.), heating and domestic hot water on weekends frostprotected switched off, program changes in case of shift operation. See 5.1.2.5 "Operating Mode" Key (Basic display)" An active automatic mode can be terminated for an early return. Simply press the "operating mode" key and adjust to automatic. Disable/Enable P2-P3 FR. 21.SEP.01 Â 13.15 58.0 oc æ ç è é ê ë ì í FR. 21.SEP.01 Display 13.15 58.0 oc æ ç è é ê ë ì í Disable Programs P2 - P3 System Parameter - Menu Time Program = P1 The selected automatic program is activated by pressing the rotary pushbutton. All the heating circuits as well as the hot water circuit work exclusively according to the standard or personalized programmed switching times in automatic program P1. The P1 programs does not appear on the display. Enable Programs P2 - P3 System Parameter Menu - Time Program = P1-P3 If the automatic program was confirmed by pressing the rotary pushbutton, program P1 starts to flash. By means of the rotary pushbutton programs P2 P3 can be selected. An active automatic program appears on the basic display with the current time and date. If automatic programs P2 and P3 are enabled, the relevant symbol é1, é2, or é3 is inserted depending on the selected program. 5.1.2.5.5 Manual Summer Mode (Only DHW) SUMMER 58.0 oc NOTE! æ ç è é ê ë ì í Setting Terminate manual summer mode In this program only the domestic hot water circuit remains active and the temperature is controlled according to the DHW setpoint and the DHW time program. The heating system is frost protected. The manual summer mode can only be selcted in control mode 1 because it influences the complete controller function (heating + DHW) See 5.1.2.5 "Operating Mode" Key (Basic display) An active manual summer mode can be terminated for an early return. Simply press the "operating mode" key and adjust to automatic. Disable/Enable P2-P3 SUMMER 58.0 oc æ ç è é ê ë ì í Disable Programs P2 - P3 System Parameter - Menu Time Program = P1 The selected automatic program is activated by pressing the rotary pushbutton. All the heating circuits as well as the hot water circuit work exclusively according to the standard or personalized programmed switching times in automatic program P1. The P1 programs does not appear on the display. EN2H-0221GE51 R1105 20
Operation SDC / DHC 43 SUMMER Â 13.15 58.0 oc æ ç è é ê ë ì í Display Enable Programs P2 - P3 System Parameter Menu - Time Program = P1-P3 If the automatic program was confirmed by pressing the rotary pushbutton, program P1 starts to flash. By means of the rotary pushbutton programs P2 P3 can be selected. A manual summer mode appears on the basic display with the indication SUMMER. If automatic programs P2 and P3 were enabled, the relevant symbol é1, é 2, or é 3 is inserted depending on the selected program. This is then the valid DHW time program. 5.1.2.5.6 Constant Heating Mode HEATING This program provides for uninterrupted heating according to the specified daytime room temperature. The DHW heating works continuously according to the specified DHW setpoint. 12.00 22.0 oc æ ç è é ê ë ì í Setting Terminate constant heating mode See 5.1.2.5 "Operating Mode" Key (Basic display) An active constant heating mode can be terminated for an early return. Simply press the "operating mode" key and adjust to automatic. NOTE! Display The operating mode HEATING remains active until a different operating mode is selected An active constant heating mode appears on the basic display with the indication HEATING. 5.1.2.5.7 Constant Reduced Mode RED. HEATING 19.40 40.0 oc æ ç è é ê ë ì í NOTE! Setting Terminate constant reduced mode This program provides for a constant reduced heating mode according to the specified reduced room temperature corresponding to the ECO (frost protected switch-off mode) or ABS (reduced mode) reduced operating mode set at a heating circuit level in compliance with the low limit of the relevant heating circuit. See the parameter menu Unmixed Circuit, Mixing circuit 1 or Mixing circuit 2/Parameter 1 = Reduced Mode. The DHW heating works constantly according to the specified DHW economy temperature (see the menu DHW /Parameter 1- DHW Economy Temperature). The operating mode REDUCED remains active until a different operating mode is selected See 5.1.2.5 "Operating Mode" Key (Basic display) An active constant reduced mode can be terminated for an early return. Simply press the "operating mode" key and adjust to automatic. 21 EN2H-0221GE51 R1105
SDC / DHC 43 Operation Display An active constant reduced mode appears on the basic display with the indication REDUCED. 5.1.2.5.8 Standby Mode STANDBY In this mode the entire system is switched off and provided with frost protection (all frost protection functions are active). The DHW heating is blocked and has frost protection. At tank temperatures of below 5 C the water is reheated to 8 C. 17.20 55.0 oc Application æ ç è é ê ë ì í Setting Terminate standby mode NOTE! Display Complete switch-off of the heating and hot water including a complete building frost protection See 5.1.2.5 "Operating Mode" Key (Basic display) An active standby mode can be terminated for an early return. Simply press the "operating mode" key and adjust to automatic. The heat generator and hot water heating remain active upon external request or upon the request of other heating circuits connected via bus. The heating circuit pumps are switched on briefly every day (pump anti-blocking protection). An active standby mode appears on the basic display with the indication STANDBY. 5.1.2.6 "Heating Characteristic" Key This key makes it possible to set the heating characteristics for the system s heating circuits. To view the diagram, please refer to 7.3.1.2 Setting of the Heating Characteristic Curve. The slope of the heating characteristic describes the relation between the change in the flow temperature with the change in the outside temperature. In case of large heating surfaces like floor heating systems the heating characteristic is less steep compared to smaller heating surfaces (e.g. radiators). The set value refers to the lowest outside temperature at the basis of the heat demand calculation. CAUTION HEATCURVE MC1 1.00 æ ç è é ê ë ì í This parameter is to be set by the heating technician and should not be altered anymore. Setting: Press "heating characteristic" key. Turn the rotary pushbutton î in order to select the desired heat circuit. Confirm the set value by pushing the rotary pushbutton î. Turn the rotary pushbutton î in order to set the characteristc type. Confirm the set value by pushing the rotary pushbutton î. Adjust the flashing value and confirm. To return to the basic display, press the "heating characteristic" key. Alternatively the value can be acquired by automatic exit after the set INFO-TIME (see 5.1.2.7 "System Information). Setting Range 0.20... 3.5 Factory Setting Direct heating circuit (DK): = 1.50 Mixer heating circuit 1 (MK1): = 1.00 Mixer heating circuit 2 (MK2): = 1.00 EN2H-0221GE51 R1105 22
Operation SDC / DHC 43 5.1.2.7 "System Information" Key With the "information" key a query of all the system information can be made by using the rotary pushbutton. The first data item to appear always is the outside temperature. By turning the rotary pushbutton î clockwise the system temperatures and the counter and consumption statuses appear; by turning the rotary pushbutton î counter-clockwise the operating statuses of the connected system components appear. NOTE! Example The information displayed depends on the plant components installed and the control loops. See the operating scheme and tables below 23 EN2H-0221GE51 R1105
SDC / DHC 43 Operation Operating modes to be called up sequentially by counterclockwise rotation of rotary-push button Touch key System temperatures; counter data to be called up sequentially by clockwise rotation of rotary-push button Outside temperature mean / actual Program/Operating mode Direct circuit/pump status Program/Operating mode Mixer circuit 1/Pump status Actuator Mixer circuit 1/Status Program/Operating mode Mixer circuit 2/Pump status Actuator Mixer circuit 2/Status Program/Operating mode WW-circuit/Pump status Heat generator Status Pump direct circuit /Status Variable output 1 / Operating mode Variable output 2 / Operating mode Outside temperature Min Max (0:00 24:0 h) Heat generator temperature nominal / actual Water heater temperature nominal / actual Flow temperature nominal / actual Flow temp. Mixer circuit 1 nominal / actual Flow temp. Mixer circuit 2 nominal / actual Variable input 1 nominal / actual Variable input 2 nominal / actual Variable input 3 nominal / actual Operating hours Heat generator switch-ons Manual exit: Return to basic display at any time by touching information key. EN2H-0221GE51 R1105 24
Operation SDC / DHC 43 5.1.2.7.1 Temperature indications Information Display Display condition Remarks Outside temp (1) Outside temp (1) Outside temp 2 Outside temp 2 Heat generator temp. (1) Heat generator temp. (2) Mixing circuit return temperature Sec. flow temp. HG-FL, distr. heating valve Mean value/ Actual value Min./max.-value (0.00 bis 24.00 Mean value/ Actual value Min./max.-value (0.00 bis 24.00 setpoint/ actual value setpoint/ actual value setpoint/ actual value setpoint/ actual value AF conneted and No fault indication Variable input configured as AF2 AF2 conneted and No fault indication If a heat generator is used Variable input configured as BS2 Return sensor connected and one of the return control functions active AF 2 connected to variable input VI-1, VI-2 or VI-3 1 appears only if BS 2 is used BS 2 connected to variable input VI-1, VI-2 or VI-3 RL-1/2 connected to corresponding variable input 1 or 2, used VI no longer selectable With district heating controllers Return temp. HG-RT distr. Heating valve External disable of heatgenerator Flue gas temperature DHW temperature (1) DHW temperature (2) DHW temperature controller Heat demand via switching contact (VI-1) Heat demand via switching contact (VI-2) Heat demand via switching contact (VI-3) Flow temperature Mixing circuit 1 Return temperature Mixing circuit 1 Flow temperature Mixing circuit 2 Return temperature Mixing circuit 2 Room temperature unmixed heating circuit Room temperature Mixing circuit 1 Room temperature Mixing circuit 2 Thermostatic function unmixed heating circuit Thermostatic function Mixing circuit 1 Thermostatic function Mixing circuit 2 Temperature of Solid fuel boiler Buffer tank temperature Solid-fuel boiler setpoint/ actual value status ON/OFF Limit value/ Actual value setpoint/ actual value setpoint/ actual value Loading status ON/OFF demand ON/OFF demand ON/OFF demand ON/OFF setpoint/ actual value actual value setpoint/ actual value actual value t setpoint/ actual value setpoint/ actual value setpoint/ actual value External HG-disable (VE1-3) default Variable input configured as AGF If DHW function is enabeled Variable input configured as DHWS-2 With district heating controllers External contact connected to VI-1, VI-2 or VI-3 Connection only to variable input VI-1 1 appears only if DHWS-2 is used Connected to variable input VI-1, VI-2 or VI-3 Thermostatic operation Thermostat instead of sensor (only DHWS- 1) VI configured as demand contact VI configured as outdoor sensor 2 VI configured as outdoor sensor 2 If there is a mixing circuit 1 Return temperature for high limit control If there is a mixing circuit 2 Return temperature for low limit control If there is an unmixed heating circuit If mixing circuit 1 is used If mixing circuit 2 is used External contact to variable input VI-1, VI-2 or VI-3 External contact to variable input VI-1, VI-2 or VI-3 External contact to variable input VI-1, VI-2 or VI-3 Setpoint without room influence/ actual room setpoint Setpoint without room influence/ actual room setpoint - Mixing circuit 1 Setpoint without room influence/ actual room setpoint Mixing circuit 2 THERMOSTAT HC If there is a thermostatic function OFF=temperature limit exceeded THERMOSTAT MC-1 THERMOSTAT MC-2 actual value actual value If there is a thermostatic function If there is a thermostatic function VO1/2 configured as solid fiel pump OFF=temperature limit exceeded OFF=temperature limit exceeded Connection to the corresponding variable input 1 or 2, used VI no longer selectable Solid-fuel loading pump at variable output, equivalent to KSPF or SFB depending on config. 25 EN2H-0221GE51 R1105
SDC / DHC 43 Operation Information Display Display condition Remarks Buffer tank temp. top Buffer tank temp.bottom Solar panel-flow temperature Solar buffer tanktemperature Solar panel-return temperature Solar storage switchover temperature setpoint/ actual value setpoint/ actual value actual value actual value actual value actual value VO1/2 configured as buffer loading pump VO1/2 configured as buffer loading pump VO1/2 configured as solar buffer loading pump VO1/2 configured as solar buffer loading pump VO1/2 configured as solar buffer loading pump Connection to the corresponding variable input 1 or 2, used VI no longer selectable Connection to the variable input VI-1, VI-2 or VI-3 Special sensor Connection to the variable input VI-1, VI-2 or VI-3 Solar loading valve activated 5.1.2.7.2 Operating statuses The request for operating statuses appears in the info menu after the sensor and setpoint information. The following informations will be shown in the display depending on the controller type: Information Display Display condition Remarks AUTO-P1 ECO If there is an unmixed heating HC ON circuit Operating status heating circuit Operating modes: holiday, absence, party, auto, summer heating, red heating, standby Time program: P1(P2,P3) mode: day, RED, ECO Operating status mixing circuit 1 AUTO-P1 MC-1 ECO ON If there is a mixed heating circuit 1 Operating modes: holiday, absence, party, auto, summer heating, red heating, standby Time program: P1(P2,P3) mode: day, RED, ECO Operating status actuator MC-1 Operating status Mischerheizkreis 2 MIX.VALVE-1 STO P AUTO-P1 MC-2 ECO ON If there is a mixed heating circuit 1 If there is a mixed heating circuit 2 Mixing valve 1 openes/closes or stops Operating modes: holiday, absence, party, auto, summer heating, red heating, standby Time program: P1(P2,P3) mode: day, RED, ECO Operating status actuator MC -2 MIX.VALVE-2 OPEN/STOP/ CLOS If there is a mixed heating circuit 2 Mixing valve 2 openes/closes or stops Operating status actuator district heating OPEN/STOP/CLO S District heating valve openes, closes or stops With district heating Operating status (St. 1) heat generator HEAT GENER. ON/OFF If there is a heat generator Info about the staged heat generator Operating status (St. 2) heat generator HEAT GENER. ST-2 ON/OFF If there is a 2 stage heat generator Info about the switching status of ST2 of the heat generator Operating status modulating heat generator. MODULATION 57 % 60% If there is a modulating heat generator Info about the modulating stage of the heat generator actual value and setpoint in % Operating status DHW circuit AUTO-P1 DHW ECO ON If there is a DHW function DHW Operating modes: holiday, absence, party, auto, summer heating, red heating, standby Time program: P1(P2,P3) mode: day, RED, ECO EN2H-0221GE51 R1105 26
Operation SDC / DHC 43 Information Display Display condition Remarks and status of the Unmixed heating circuit pump and status of the Variable output 1 and status of the Variable output 2 Volume flow district heating valve Heat power District heating valve Starts heat generator (1) Operating hours heat generator (1) Starts heat generator St.2 Operating hours heat generator St.2 OUTPUT HC-P EO ON/OFF Defined output OUTPUT VO-1 SOP ON/OFF Defined output Solar (SOP), Circulation (CIR.), electric heating element (ELH), charging pump (CHP), boiler pump (BCP-1,BCP-2), error output (EO), return bypass pump (RBP), buffer loading pump(bulp), solid fuel pump (SFP), heating circuit pump(hcp), constant control (CC), timer (CLOCK) Solar (SOP), Circulation (CIR.), electric heating element (ELH), charging pump (CHP), boiler pump (BCP-1,BCP-2), error output (EO), return bypass pump (RBP), buffer loading pump(bulp), solid fuel pump (SFP), heating circuit pump(hcp), constant control (CC), timer (CLOCK)) Solar (SOP), Circulation (CIR.), electric heating OUTPUT VO-2 CIR. ON/OFF Defined output If there is a heat meter If there is a heat meter element (ELH), charging pump (CHP), boiler pump (BCP-1,BCP-2), error output (EO), return bypass pump (RBP), buffer loading pump(bulp), solid fuel pump (SFP), heating circuit pump(hcp), constant control (CC), timer (CLOCK) With district heating With district heating STARTS 1275 If there is a heat generator Info about heat generator starts (burner starts). OPER. HOURS 280 If there is a heat generator Info about heat generator operating hours STARTS 530 ST-2 OPER. HOURS 200 ST-2 If there is a 2 stage heat generator If there is a 2 stage heat generator Info about heat generator restarts (burner starts of 2 nd stage). Info about heat generator operating hours stage 2 Test temperature for measuring purpose INFO TEMP 50 C KVT-sensor connected and VI configured Independant test temperature, connected to the variable input VI-1, VI-2 or VI-3 Operating status ext. Switching modem MODEM RED VI configured as ext. Switching modem Operating modes depending on modem switsch: AUTO (automatic) STBY (standby), HEAT (heating), RED (reduced). Switching status display Variable input 1 VARIABLE-1 OFF VI-1 configured as contact input Valid for: demand contact, ext. error input, burner disable, flue gas thermostat, switching modem, info input Switching status display Variable input 2 VARIABLE-2 OFF VI-2 configured as contact input Valid for: demand contact, ext. error input, burner disable, flue gas thermostat, switching modem, info input Switching status display Variable input 3 VARIABLE-3 OFF VI3 configured as contact input Valid for: demand contact, ext. error input, burner disable, flue gas thermostat, switching modem, info input Solar heat power HEAT-POWER.kW SOL VO1/2 configured as solar panel pump Only with solar systems Solar heat gain HEAT-ENERGY.. kwh SOL VO1/2 configured as solar panel pump Only with solar systems 27 EN2H-0221GE51 R1105
SDC / DHC 43 Operation Information Display Display condition Remarks Nr. of solar panel pump starts NR. OFSTARTS. SOL VO1/2 configured as solar panel pump Only with solar systems Operating hours Solar panel pump OPER. HOURS... SOL VO1/2 configured as solar panel pump Buffer tank sensor BU 1 connected to a variable input 1 or 2, occupied input no longer selectable Set Time for Automatic Exit INFO-TIME If the "information key" is pressed for approx. 3 s upon accessing the information level, the INFO-TIME parameter appears. This parameter determines the time for the automatic return to the basic display. 2.0 min æ ç è é ê ë ì í Setting range OFF, 1... 60 min OFF No exit, the last information displayed remains constantly until the next setting on the display. 1... 60 min Automatic exit from the information level after the specified time, settable in 0.5 minute steps. Factory setting OFF 5.1.2.8 "Manual Mode" / "Emission Measurement" Key 5.1.2.8.1 "Manual Mode" MANUALMODE 38.0 oc 58.0 oc æ ç è é ê ë ì í NOTE! Application Termination If the "manual mode" / "emission measurement" key is pressed for more than 5 s while the basic display is visualized, the controller is switched to manual mode. In this operating mode the heat generator temperature is set manually with the rotary pushbutton î according to the desired setpoint. All the pumps are active, while the available mixing valves are de-energized and can be actuated by hand. The heat generator setpoint can be set from 38 to 80 C and it flashes on the left hand of the display, while the actual heat generator temperature is visualized statically on the right hand of the display. The switching differential corresponds to the set differential for automatic control and is symmetrical to the setpoint. The heat generator high limit prevails over the heat generator switching differential and deactivates the heat generator in case it is exceeded. Controller malfunctions (emergency mode) Breakdowns The return to the last selected operating mode is carried out with the "manual mode" / "emission measurement" key or the "Operating mode" key. EN2H-0221GE51 R1105 28