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Table of Contents
Summary of Contents for Compit R551
- Page 1 2 R551 models from u20 to u29 WEATHER-DEPENDENT BOILER CONTROL SYSTEM WITH THERMAL MIXING VALVE CONTROL AND DOMESTIC HOT WATER LOADING www.compit.eu COMPIT ul. Wielkoborska 77a, 42-200 Czêstochowa, tel./fax 034 362 88 95 Str. 1...
- Page 2 Disposal of waste electrical and electronic equipment (applies to private households only) The symbol of the crossed-out wheeled bin placed on COMPIT products or in the accompanying operating instructions means that disposal of waste electrical and electronic equipment (WEEE) along with other waste is not allowed. Equipment marked with this symbol that can be recycled, reused or where subassemblies can be recovered should be returned to a specialised collection facility, where it is collected free of charge.
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Page 3: Operation
OPERATION R551 control system is designed to control the operation of central heating coal boiler ac- cording to the weather characteristics. Smooth control of the blower reduces the amount of air supplied during the combustion process. Weather-dependent control of the mixer allows for reducing the circulation temperature when compared to the boiler temperature, which protects the boiler and ensures optimum CH temperature. -
Page 4: Maintenance
used to enable the feeder and the “-” key is used to start the blower. After the “?” key is pressed, the display shows the speed of the blower which can be adjusted by using the up/ down arrow keys. After starting-up the boiler, press “PRACA/STOP” [OPERATION/STOP] key to enter the OPERATION mode. - Page 5 switch from the MAINTENANCE mode when the boiler temperature falls below the set temperature of the boiler – minus hysteresis. t2 - feeder operating time in the MAINTENANCE mode t3 - feeding break time in the MAINTENANCE mode t4 - blower operating time SHUT DOWN The boiler is SHUT DOWN when the user presses the “PRACA/STOP”...
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Page 6: Boiler Pump Operation
The set value calculated from the curve is also influenced by the thermostat and the timer. However, the calculated boiler temperature may not be lower than the value determined in “Minimum boiler temperature” or exceed the “Maximum boiler temperature”. Similarly, set mixer temperature may not exceed the “Maximum mixer temperature”. - Page 7 HW loading takes place, the boiler and mixer pumps are shut down. OPERATION WITH MIXER R551 controls one mixing valve circulation according to constant temperature or weather characteristics (appropriate mode is selected in “MIXER OPERATION”). If weather-de- pendent operation mode has been selected, the set value is calculated in the same way as for the boiler (see p.
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Page 8: Emergency Situations
EMERGENCY SITUATIONS The controller signals 3 emergency situations. The first one – when boiler temperature exceeds 95°C. The EMERGENCY relay is on. This emergency can be cancelled by press- ing the START/STOP key after the temperature falls below 95°C. This emergency results in switching to the OFF mode. - Page 9 CONTROLLER HANDLING Four keys are used to operate the controller: Press this key to switch between boiler operating modes. Press the “?” key to start editing the parameters. Press the “+” and “-” keys to view the parameter list and after enabling the editing mode by pressing “?”...
- Page 10 OPERATION mode – this mode is entered from the START-UP mode if boiler temperature is lower than the set temperature. Having reached the set temperature the controller auto- matically switches to the MAINTENANCE mode. MAINTENANCE mode – this mode allows for maintaining the combustion only. When the boiler temperature falls below the set temperature, the controller automatically switches to the OPERATION mode.
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Page 11: List Of Parameters
LIST OF PARAMETERS: NOTE: Inappropriate parameter settings may result in faulty boiler operation and in extreme situations, in boiler failure. When the power supply is on, the display will show information on the measured boiler temperature, set temperature and the current operating mode. Using the arrow keys you can view the measured temperature readings in the following order: Controller operation mode, boiler measured temperature and Mode: OPERATION... - Page 12 Coal feeding break time in the OPERATION mode (Setting t1:FeederBr. Time range: 2 to 500s, step 2s). OPERATION Feeder operating time in the MAINTENANCE mode (Setting t2:FeederOp. Time range: 2 to 500s, step 2s). MAINTENANCE Coal feeding break time in the MAINTENANCE mode (Set- t3:FeederBr.
- Page 13 CH boiler set temperature at outdoor temperature -10°C – At T ext = -10°C parameter visible only in weather-dependent operation mode Tch set = 50°C (Setting range: 0 to 90°C, step 1°C). CH boiler set temperature at outdoor temperature -20°C – At T ext = -20°C parameter visible only in weather-dependent operation mode Tch set = 50°C...
- Page 14 Mixer set temperature at constant temperature value - pa- Mixer set temp. rameter visible only in CONSTANS mode (Setting range: 0 30°C to 90°C, step 1°C). Mixer set temperature at outdoor temperature +10°C – pa- At T ext = +10°C rameter visible only in weather-dependent operation mode Tmix.
- Page 15 GROUP 4 – DHW tank settings accessible with user code DHW tank operation: DHW operation without timer – DHW set temperature is determined by “T with timer dhw set” parameter. with timer – set temperature is adjusted by timer settings reduction –...
- Page 16 GROUP 5 - SYSTEM accessible with user code 99 Minutes Minute setting. Hours: Current hour setting. Day: Current day setting. Tuesday Outdoor temperature, the exceeding of which by 2°C results in switching off weather-dependent circulations (CH or mixer). Shut Down outdoor Heating is resumed when T ext drops below the value (Set- temp.
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Page 17: Factory Defaults
Minimum boiler temperature to be obtained from the curve Boiler minimum or set manually (Setting range: 0 to 90°C, step 1°C). temp. 42°C Boiler switching amplitude between OPERATION and MAIN- Boiler amplitude TENANCE modes (Setting range: 1 to 30°C, step 1°C). 4°C When boiler temperature drops below this value boiler shut Boiler shut down... -
Page 18: Wiring Diagrams
34, 33 - T4 sensor – DHW tank temperature 32, 31 - T5 sensor – feeder temperature 30, 29 - W1 – mixer thermostat 28, 27 - W2 – CH thermostat (boiler) 23, 24, 25, 26 - Interface for conneccting COMPIT room module Str. 18... - Page 19 MOUNTING The control system consists of 2 modules: control panel and operating module E551. The operating module is placed in a housing to be mounted on a 35 mm DIN rail and it has the width of 9 S301 modules. The contour is presented in the drawing below: 45 mm 90 mm Display panel is fitted on the boiler with four metal screws.
- Page 20 CONNECTING SENSORS AND ON/OFF INPUTS: R551 control system works with five sensors. Outdoor temperature and mixer sensors are Pt1000 series sensors. They can be connected to the controller with a 30m long cable with diameter from 0.5 mm2 to 1.5 mm2. Remember that connection resistance of 3.9 ohm gives a 1°C reading error.
- Page 21 stat. The controller does not work with any systems sending voltage, current or digital sig- nals to their outputs. Examples of resistance values for T2001 sensor at different temperatures: Max. R [ ] Ω error Temp. [°C] [°C] MIN. TYP. MAX.
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Page 22: Technical Data
REGULATION on/off adjustment for the pumps and feeder, smooth regulation for the blower, valve control by Pl step algorithm. INTERFACE Communication interface for connecting COMPIT room module. The set includes: R551 control panel – 1pcs. E551 operating module – 1pcs. -
Page 23: Declaration Of Conformity
COMPIT Piotr Roszak ul. Wielkoborska 77a 42-200 Czêstochowa hereby declares that the product R500 Microprocessor Controller models : R510, R510B, R530, R550, R551, E510, E550, E551 meets the following requirements: Safety: PN – EN 60730 – 1; EN 60730-2-9:2002 + A1:2003 + A11:2003,IDT...
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