Instruction Ecl 9750

Transcript

Instruction ECL 9750 087R9453 087R9453 (This instruction apply to software generation 00.2→ - see P0.1) Contents System examples ................................ 2 Electrical diagrams ............................. 3 Electrical connections ................... 4 - 5 - connections (230 V a.c .) - connection of temperature sensors Master/slave units ............................... 5 Control settings ............................. 6 - 8 User settings ......................................... 6 a) program clock b) display c) temperature setting d) function switch Potentiometer settings ..................... 7 - 8 f) and g) slope of heat curves h) night setback i) hot water service temperature Digital settings ........................... 10 - 20 - Display, switch and (+), (-) and SET keys - Position selection - Value changing - Value presetting - Row 0 - Pumps and valve status - Row 1 - Outdoor temperature - Row 2 - Boiler circuit - Row 3 - Mixing circuit - Row 4 - Hot water service circuit - Row 5 - Room temperature - Row 6 - Return temperature - Row 7 - System time constants - Row 8 - Diverse function selection - Row 9 - Diverse settings Mounting and dismantling ........ 21 - 22 Time control ...................................... 23 Function testing .................................. 9 - Status and temperature reading - Regulation activity - Testing of sensors - Manual valve control BC-HM VI.76.W3.02 © Danfoss 11/96 1 Principle 1 Principle 2 Principle 3 2 VI.76.W3.02 © Danfoss 11/96 BC-HM Wiring for principle 1 Wiring for principle 2 and 3 BC-HM VI.76.W3.02 © Danfoss 11/96 3 Electrical connections Electrical connections to the controller are made using terminal boards with screw terminals. Up to 3 × 1.5 mm2 or corresponding can be connected to each terminal. The terminals are coded so that units on mains voltage cannot be connected on the sensor side. 230 V a.c. connections (terminals 13 - 24) Phase (L) Neutral (N) Circulation pump Reversible gearmotor AMV, AMB Feed pump or distribution valve Burner (stage 2) Burner (stage 1) / Terminal Load 14 13 18 close 16 open 17 20 8 (2) A 250 V a.c 8 (2) A 250 V a.c. 8 (2) A 250 V a.c. 8 (2) A 250 V a.c. Cable cross-section: 0.75 - 1.5 mm2 Max. length: 50 m Connection of temperature sensors, etc. - safety voltage (terminals 1 - 12) The installation of sensors and remote controls is described in the associated product instructions. ECL 9750 must be connected to the following sensors: Outdoor temperature sensor Flow temperature sensor (mixing circuit) Boiler sensor Hot water service sensor Type Klemme ESMT ESMA/C/U ESMA/C/U ESMB/U 11 - 12 10 - 11 8-9 7-9 ECL 9750 is now able to control the hot water service temperature and control the flow temperature in both heating circuits, in relation to the outdoor temperature. 4 VI.76.W3.02 © Danfoss 11/96 BC-HM In addition, the following sensors and remote control units can be connected: Return temperature sensor Remote control unit with built-in room sensor Room temperature sensor Control panel ECA 9020 with clock, optimizer and room sensor. The control panel will also show actual and calculated system temperatures. Type Terminal ESMA/C/U 4-6 ESMF 3-4 ESMR 4-5 ECA 9020 1-2 Cable cross-section: minimum 0.4 mm2 Max. length: 50 m Note Cable resistance might produce an incorrect measurement. A resistance of 4 ohm corresponds to a deviation of 1 degree. Master/slave units ECL 9750 can be connected to other ECL controls (the number of units depends on the type). Further information is contained in the instruction on master/slave units. BC-HM VI.76.W3.02 © Danfoss 11/96 5 Control settings The value is factory-set at 22 °C, but can be changed in P5.2 (see digital settings). The amplification factor can be changed in P9.2. Adaptive reference room control The heat curve is automatically adapted to the heat requirement. The room temperature can be increased or decreased with knob c). The knob must be turned towards +8 if the room temperature is too low. The room temperature setting range is factory-set at 22 ±8°C. The knob midpoint can be set in P5.2 (see digital settings). The amplification factor can be changed in P9.2. User settings a) Program clock (analog or digital) b) Display c) Temperature setting d) Function switch e) User instructions a) Program clock The program clockis must be set in the required normal and reduced temperature periods by pushing riders for reduced temperature setting towards the center of the clock. b) Display On turning the switch concealed behind the cover plate, the display will show the operating condition and system temperature (see function testing and installer settings). Weather compensation The flow temperature in both boiler circuit and mixing circuit can be increased and decreased (paralleldisplaced) by turning the knob. Turning towards +8 increases the flow temperature. VI.76.W3.02 Time program overridden and constant control in accordance with normal temperature. Manual operation Burner and all circulation pumps constantly cut in. All control functions off and burner controlled exclusively by boiler thermostat. Valve can be controlled manually. >|< Heating system regulated in accordance with preset values. All installer settings (under cover plate) overridden. Preset values are given in the section “Installer settings” in the column marked >|<. Since the parallel displacement depends on the slope of the heat curve, the change can be different in the two heating circuits. 6 Time program overridden and constant control in accordance with reduced temperature. Automatic changeover between normal and reduced temperature as set on clock. c) Temperature setting The function of this knob depends on the setting in P8.4 (see section on digital settings). Selection can be made between weather compensation and adaptive reference room control in P8.4. With ESMR/F connected, the flow temperature is reduced when the set max. room temperature is exceeded. d) Function switch Burner and circulation pumps stopped and valve in mixing circuit closed, but with system frostprotected. Hot water service heating still possible. The best heating economy can be achieved at the lowest possible flow temperature and by using radiator thermostats. © Danfoss 11/96 BC-HM Potentiometer settings f) Heat curve slope in boiler circuit g) Heat curve slope in mixing circuit h) Night setback level i) Hot water service temperature f) and g) Setting of heat curve slope (boiler and mixing circuits) The slope of the heat curve in boiler circuit and mixing circuit can be set independently of each other and in the range 0.2 - 3.4. The heat curve factory setting is 1.8. Examples of heat curve settings VI.76.W3.02 Radiator (80 °C) Floor heating (55 °C) –25 °C 1.2 0.7 –15 °C 1.6 0.9 –10 °C 1.8 1.0 *Outdoor temperature for sizing. Normally the lowest occurring outdoor temperature of the heating season is used. If a satisfactory room temperature cannot be obtained when the outdoor temperature is less than +5 °C, the slope can be increased by turning knob f) or g). When the outdoor temperature is more than +5 °C, the heat curve can be parallel-displaced using knob c). BC-HM Outdoortemperature* © Danfoss 11/96 7 h) Setting the night setback level The night setback level can be set at a fixed value (0 - 8) or at an outdoortemperature-dependent value (AUTO). The basic setting for the reduced temperature is 5. Each graduation on the scale corresponds to about 1 degree in the room. Night setback The sinking of room temperature in the reduced period is shown in the above figure. Different settings are given (–2, –4, –6, –8 and AUTO). If no room sensor is used, the control calculates the parallel displacement to give the set room temperature setback. i) Setting the hot water service temperature The hot water service temperature can be set with potentiometer i). The basic setting is 50 °C. 8 VI.76.W3.02 © Danfoss 11/96 BC-HM Function testing Testing of sensors The sensors can each be inspected by reading off the measured temperature (P0.0 - P9.0) and in each case evaluating the result. Status and temperature reading Setting switch on positions 0 - 9 enables the display to show the heating system temperature and the status of burners, pump and valve. Setting 0 1 2 3 4 5 6 7 8 9 The normal measuring range is –60 °C to +120 °C. Outside this range the display becomes: Information Burner, pump and valve status Outdoor temperature Flow temperature in boiler circuit (boiler temperature) Flow temp. in mixing circuit Hot water service temperature Room temperature Return temperature None None None –– – – – (3 horizontal bars) for shortcircuited sensor. Manual valve control When testing or adjusting gearmotor limit switches, the valve can be controlled manually by setting the . function switch in position Control activity During normal operation, when the or function switch is in position , the bars will light up when the valve actuator receives pulses. No bars Flow temperature within neutral zone, and motor receives no pulses. Valve inactive. ▲ Motor receives pulses which open the valve. ▼ Motor receives pulses which close the valve. BC-HM VI.76.W3.02 (2 horizontal bars) for disconnected sensor The valve can be opened by turning knob c) fully clockwise and closed by turning the knob fully counterclockwise. If the direction of rotation of the motor does not correspond to the display indication, the leads to the gearmotor must be swapped over. © Danfoss 11/96 9 Digital settings Display, switch and (+), (–) and SET keys The switch, display, (+), (–) and SET keys can be used to check and change some of the control settings. Each check and setting range has a certain “position”. The table below shows how to make the change between different positions. Row 0-9 0 1 2 3 4 5 6 7 8 9 ← (–) 0 P0.0* P1.0* P2.0* P3.0* P4.0* P5.0* P6.0* - 1 P0.1* P1.1* P2.1* P3.1* P6.1* - Column 0-5 2 P1.2 P2.2 P3.2 P4.2 P5.2 P8.2# P9.2# (+) → 3 P1.3 P3.3 P8.3# P9.3# 4 P1.4 P2.4 P4.4 P6.4 P7.4 P8.4# P9.4# 5 P2.5 P6.5 P7.5 P8.5# P9.5# Values in the positions marked * cannot be changed. Positions marked # contain up to three different functions. See section on value changing. Position selection - Switch is used when selecting rows 0 - 9. - (+) and (–) keys are for selecting columns 0 - 5. However, access to the positions in columns 4 - 5 can only be gained by selecting P0.3 and pressing SET for 5 seconds. Then, P0.4 will be shown in the display and all positions become accessible. - When a particular position is selected, the display shows alternately the position number, e.g. P1.2, and a particular value, say 18 °C. Note: Column 0 displays values only. Note Positions marked # contain up to three different functions. The values are changed by choosing one digit at a time. Press SET and the digit furthest to the right will begin to flash. The figure can then be changed using keys (+) and (–). Value changing 1) Select the required position. 2) Press “SET” once - the display flashes. 3) Change the value using keys (+) and (–). 4) Press “SET” to store the value. Value presetting Factory setting 10 VI.76.W3.02 When SET is pressed again, the middle digit can be changed. One more press on SET and the digit farthest to the left can be changed. All changes can be stored by pressing SET. The display will then show a value and position number alternately. >|< Basic setting - when the control function switch is set >|< is overridden to the preset values, as shown in the tables under >|<. © Danfoss 11/96 BC-HM Row 0 - Status Position P0.0 Description Pumps and valve status The operating condition of burners, regulating valve and pumps can be read in the display as vertical bars when the function is ON. Stage 1 Stage 2 Hot water service Valve closes Valve opens Pumps P0.1 Software generation Software generation is shown in the display P0.3 Access to columns 4 - 5 Press SET for 5 seconds and P0.4 will flash. Columns 4 and 5 are now accessible. Row 1 - Outdoor temperature Position Description P1.0 Actual outdoor temperature P1.1 Accumulated outdoor temperature Used in connection with summer cut-out P1.2 The accumulation factor is set in P9.5 Setting of Position P1.2 Summer cut-out Range >|< 10 - 30 °C 18 °C - –9 to +9 0 0 –9 to +30 °C 30 °C 30 °C Setting of the outdoor temperature at which heating is to be stopped. Account must be taken of the heat accumulation capacity of the building. The accumulation factor must be set in P9.5 P1.3 Starting point of heat curve in mixing circuit The heat curve starting point can be increased or decreased ±9 in relation to 20, at 20 °C outdoor temperature. P1.4 Blocking stage 2 when outdoor temperature is high Setting of the outdoor temperature limit above which stage 2 must not be allowed to cut in. BC-HM VI.76.W3.02 © Danfoss 11/96 11 Row 2 -Boiler circuit Position Description P2.0 Actual boiler temperature (flow temperature) P2.1 Calculated boiler temperature Boiler or flow temperature calculated from heat curve. Position Setting of Range >|< P2.2 Maximum flow temperature in boiler circuit Setting of the highest permissible boiler or flow temperature 30 - 90 °C 80 °C 80 °C P2.4 Minimum flow temperature in boiler circuit Setting of the lowest permissible boiler or flow temperature. Always follow the instructions of the boiler manufactorer. 10 - 90 °C 40 °C 40 °C P2.5 Boiler temperature differential Setting of boiler temperature differential. Always follow the instructions of the boiler manufactorer. 1 - 25 K 8K – Row 3 - Mixing circuit Position Description P3.0 Actual flow temperature in mixing circuit P3.1 Calculated flow temperature in mixing circut Flow temperature calculated from heat curve Position Setting of Range >|< P3.2 Maximum flow temperature in mixing circuit Setting of highest permissible flow temperature 30 - 90 °C 80 °C 80 °C P3.3 Minimum flow temperature in mixing circuit Setting of lowest permissible flow temperature 10 - 90 °C 10 °C 10 °C 10 - 90 °C 10 °C 10 °C 1 - 25 K 6K 6K Række 4 - Hot water service circuit Position P4.0 Position 12 Description Actual hot water service temperature Setting of Range P4.2 Reduced hot water service temperature Setting of required hot water service temperature during night setback of the hot water circuit. P4.4 Hot water service temperature differential Setting of difference between cut-in and cut-out temperature for hot water service heating VI.76.W3.02 © Danfoss 11/96 >|< BC-HM Row 5 - Room temperature Position P5.0 Position P5.2 Description Actual room temperature Setting of Range Maximum limitation - room temperature A) Setting of the temperature at which the room compensation of flow temperature begins, when ESMR/F is used and weather compensation with limit function is selected in P8.4 10 - 30 °C >|< 22 °C – B) Setting of parallel displacement knob midposition when adaptive reference room control is selected in P8.4 Note: Using ESMF the limit can be displaced in relation to the value in P5.2 by ±10 degrees Row 6 - Return temperature Position Description P6.0 Actual return temperature P6.1 Damped return temperature Used in connection with return temperature limitation to obtain stable regulation. The damping factor must be set in P9.5. Position P6.4 Setting of Range Max./Min. return temperature limitation Setting of the temperature at which return temperature limitation is to start >|< 20 → 90 °C –40 –40 –9 → +9 3 3 Positive value (+) is max. limit Negative value (–) is min. limit P6.5 Influence of return temperature limitation on flow temperature. When the return temperature lies under or over the set limit (P6.4), the boiler temperature is increased or decreased. The value determines the magnitude of change (amplification) and the sign determines the direction. Positive value (+) increases boiler temperature Negative value (–) decreases boiler temperature BC-HM VI.76.W3.02 © Danfoss 11/96 13 Row 7 - System time constants Position P7.4 Setting of Range System response time Minimum cut-in/out delay between stage 1 and 2, when the difference between wanted and actual flow temperature is less than 20 K >|< 15 sec-59 min 5 min - 15 sec-59 min 2 min - The system response time is the time which elapses from when the burner starts to when the flow temperature begins to rise Seconds are shown in the display as ss Minutes are shown in the display as mm P7.5 Minimum stage delay Minimum cut-in/out delay between stage 1 and 2, when the difference between wanted and actual flow temperature is more than 20 K The minimum stage delay is the least time which must elapse when the fast cut-in or cut-out of stages is required. Seconds are shown in the display as ss Minutes are shown in the display as mm 14 VI.76.W3.02 © Danfoss 11/96 BC-HM Row 8 - Diverse function selection Position Description Range Hot water service charge pump/distribution valve The function is possible only at pump control in the boiler circuit - selected in P8.5 0 Systems with hot water service charge pump. The boiler circuit pump is stopped by hot water service demand. 1 Systems with distribution valve. The boiler circuit pump runs when hot water service is demanded. 0 or 1 Hot water service priority The function affects the mixing valve only Priority OFF 0 Simultaneous heating and hot water service. The mixing valve operates during hot water service demand. Note: The boiler temperature is increased during hot water service demand and can cause high radiator temperature. 0 or 1 P8.2 010 1 Priority ON The mixing valve is closed during hot water service demand. Pump stop during night setback The function is possible only with pump at control in the boiler circuit - selected in P8.5 Pump stop OFF 0 The boiler circuit pump runs when: - P2.1 > 20 °C - P1.0 < 2 °C - Burner is ON 1 0 or 1 Pump stop ON The boiler circuit pump stops during night setback, but starts when there is a heat demand in the radiator circuit. Note: There will be a risk of frost damage in the radiator circuit BC-HM VI.76.W3.02 © Danfoss 11/96 15 Row 8 (cont.) - Diverse function selection Position Description Range 321 P8.3 Clock channel - boiler circuit x The figure gives the clock channel which must control the boiler circuit 0-4 Clock channel - mixing circuit The figure gives the clock channel which must x control the mixing circuit 0-4 Clock channel - hot water service channel The figure gives the clock channel which must x control the hot water service circuit 0-4 x can give one of the following functions 0 = no time control of the circuit 1 = time control in relation to channel 1 (analog or digital channel 1 or ECA 9020 channel 1) 2 = time control in relation to channel 2 (digital channel 2 or ECA 9020 channel 2) 3 = time control in relation to channel 3 (ECA 9020 channel 3 only) 4 = time control in relation to channel 4 (ECA 9020 channel 4 only) If the function switch is set on >|< the three clock channels are overriden to 0 0 0 16 VI.76.W3.02 © Danfoss 11/96 BC-HM Row 8 (cont.) - Diverse function selection Position Description Range 000 P8.4 Function and influence of room sensor (boiler circuit) 0 Max. room temperature limit If ESMR/F is connected, the room temperature maximum limitation is the temperature set in P5.2. The influence of ESMR/F must be set in P9.2. 1 Adaptive reference room control The function is based on room sensor ESMR/F in the reference room. The heat curve is automatically adapted to the heat demand. The room temperature can be set with the ± knob c). The influence of ESMR/F must be set in P9.2 and the mid-position must be set in P5.2. Function and influence of room sensor (mixing circuit) Max. room temperature limit 0 If ESMR/F is connected, the room temperature maximum limitation is the temperature set in P5.2. The influence of ESMR/F must be set in P9.2. 1 BC-HM 0 or 1 Adaptive reference room control The function is based on room sensor ESMR/F in the reference room. The heat curve is automatically adapted to the heat demand. The room temperature can be set with the ± knob d). The influence of ESMR/F must be set in P9.2 and the mid-position must be set in P5.2. Total stop of burner during night setback Total stop OFF 0 Minimum boiler temperature is maintained in normal periods and in reduced periods 1 0 or 1 0 or 1 Total stop ON Minimum boiler temperature is maintained only in normal periods. Frost protection is active only for the boiler, when "Pump stop during night setback" is selected in P8.2. Risk of frost damage in the radiator circuit VI.76.W3.02 © Danfoss 11/96 17 Row 8 (cont.) - Diverse functions selections Position Description Range Control of pump in boiler or mixing circuit The controller can only control one pump. Select the circuit with controlled pump. 0 Boiler circuit 0 or 1 P8.5 011 1 Mixing circuit pump Pump and valve exercise Pump and valve exercise OFF 0 1 Pump and valve exercise ON Pump and mixing valve are exercised in turn if there has been no heat demand for 72 hours. The pump and possibly the burner are stopped during valve exercise and the valve is closed during pump exercise Delayed pump start after night set back The function is only active when the boiler circuit pump is controlled by the controller - selected in P8.5. Pump started at the same time as the burner 0 1 18 0 or 1 0 or 1 Pump started only when minimum boiler temperature is reached (used to reduce condensation on boiler restart) VI.76.W3.02 © Danfoss 11/96 BC-HM Row 9 - Diverse settings Position Setting of Range 444 P9.2 Amplification factor with room compensation in boiler circuit 4 Setting of the influence of room temperature on the boiler circuit flow temperature. Note: The heat curve slope has an influence on the magnitude of the change. 0-9 Amplification factor with room compensation in mixing circuit Setting of the influence of room temperature on the 4 mixing circuit flow temperature. Note: The heat curve slope has an influence on the magnitude of the change. 0-9 Boiler operating factor Setting of the temperature deviation between boiler and 4 mixing circuits necessary to make the boilerfollow function 0-9 degrees - 22 P9.3 BC-HM Boost factor (fast heating) in boiler circuit 2 Set the percentage by which the flow temperature must be increased during the first hour after night setback. 0 - 9 corresponds to 0 - 90% increase. 0-9 Boost factor (fast heating) in mixing circuit Set the percentage by which the flow 2 temperature must be increased during the first hour after night setback. 0 - 9 corresponds to 0 - 90% increase. 0-9 VI.76.W3.02 © Danfoss 11/96 19 Row 9 (cont.) - Diverse settings Position Setting of Range P9.4 130 Minimum burner ON-time 0 Setting of required minimum burner ON-time. The time must be set in minutes. 0 - 9 min Neutral zone in mixing circuit Setting of neutral zone for flow temperature 3 in mixing circuit. The valve motor receives no regulation pulses in the neutral zone. 0 - 9 degrees Sequence control Setting of burner or boiler sequence Automatic sequence change-over. Sequence 0 changes over so that operating time becomes the same in both boilers. 1 0 or 1 No sequence change-over - burner stage 1 is always cut in before stage 2. 055 P9.5 Accumulation factor for outdoor temperature 5 Setting of accumulation factor in connection with heat accumulation capacity of the building. Used only in connection with summer cut-out P1.2. 0-9 0 = buildings with low heat accumulation capacity 9 = buildings with high heat accumulation capacity Damping factor for return temperature Setting of return temperature signal damping 5 in connection with return limitation. 0-9 0 = min. damping 9 = max. damping Addressing of slave control Setting of slave control adress in connection with 0 master/slave combinations in systems with several controllers. 0 0-9 = outdoor temperature signal transferred from master to slave(s) 1 - 9 = outdoor temperature signal, references and clock signal (ECA 9020) transferred via bus. Note: Display switched off in master control. 20 VI.76.W3.02 © Danfoss 11/96 BC-HM Mounting On wall Use a standard or a special base plate with wall case for mounting ECL 9750 on wall. The plate is fixed on a flat surface with two 4 mm screws (standard) or three 4 mm screws (special). Be aware of the "UP"-arrow. Then wire the ECL 9750 as described in the paragraph "Wiring". The controller is mounted in the base plate (when using the special base plate, note that the controller is first of all to be fit into the wall case) and screw up the center screw behind the cover plate. In the front plate ECL 9750 can be built into a boiler front plate. The opening is to measure 92 x 138 mm and the plate is to be max. 3 mm thick. Fix four retainer springs on the controller, push it gently into the opening and the springs will secure the controller in the opening. The retainer springs are delivered as accessories together with 2 terminal strips. Wire the ECL 9750 to the two terminal strips and then mount them in the controller. The terminal strips are encoded to prevent exchange by mistake. On a DIN-rail ECL 9750 can be mounted on a 35 mm DIN-rail. Fix a spring - delivered as accessory - on the base plate bottom and then mount the base plate on the DIN-rail. BC-HM VI.76.W3.02 © Danfoss 11/96 21 Dismounting If the controller is mounted in a front plate, dismount it by pressing the retainer springs together and dismount the built-in controller. Tip out the controller when the retainer springs are not accessible. Several controllers in parallel In boiler front plate On wall or on DIN-rail 22 VI.76.W3.02 © Danfoss 11/96 BC-HM Clock When the clock is not mounted remove the glass cover, the inside cover and the clock cover and then mount the clock. Open the glass cover all the way to the left - the taps will then slide out. The inside cover is tipped out and the clock cover is unscrewed. Then the clock is placed in the center of the opening with the plugs downwards. Fasten the clock with the screws. Clock dismounting Remove the screws and dismount the clock by gently tipping it out. External time control An external control panel ECA 9020 can time control ECL 9750. ECA 9020 is connected to the bus terminals on the rear of the ECL controller (see wiring). BC-HM VI.76.W3.02 © Danfoss 11/96 23 24 VI.76.W3.02 © Danfoss 11/96 BC-HM