Vitotherm VCD2, Instruction Manual

Page 1: ...Instruction manual Vitotherm B V Tel 31 0 15 369 47 57 Overgauwseweg 8 Fax 31 0 15 369 77 42 2641 NE Pijnacker Email info vitotherm nl Internet www vitotherm nl VCD2 CO Detector ...

Page 2: ...tructions have been compiled to guarantee a maximum life span for the Vitotherm CO detector In accordance with the warranty conditions the warranty will be invalidated if the operating and maintenance instructions are not adhered to All deviating operating situations will be assessed on their permissibility on a per event basis ...

Page 3: ...roduced and or published by means of printing photocopying micro film or in any other way without the prior written permission of Vitotherm BV This also applies to the accompanying drawings and diagrams Vitotherm BV reserves the right to change parts of this manual at any time without prior or direct notice to the customer The content of this instruction manual can also be changed without prior wa...

Page 4: ...nnection referring to NEN 1010 also see technical information for an electrical connection Connecting the device to the mains requires a power cord with a 230V isolation switch The power cord must consist of 3 wires namely phase neutral earth This power cord needs to reach well into the switch box The CO detector operates on 230V and 100V alternating current and neutral When connecting to the main...

Page 5: ... Crouzet Millenium 3 PLC The heart of the CO detector is the Crouzet Millenium which operates via a programme developed by Vitotherm 3 1 Millennium display This is a 4 line display in which the status and possible fault lines of the device are indicated The ESC function next to the display offers the option to view the inputs and outputs In addition there are a number of buttons next to the displa...

Page 6: ...o Citycell CO Sensor This sensor comes with a push button for calibration The initial calibration is carried out in our factory A possible re calibration and the annual inspection can be carried out by our qualified staff on location See also the Calibration Appendix of the VCD2 ...

Page 7: ...y showing the last measured CO level Any CO fault will activate a red light and the device can be reset by pressing the OK button 5 2 In the case of a cable breakage and sensor malfunction The CO detector is safeguarded against a sensor malfunction This works as follows if the input signal of the CO sensor is measured and it becomes too low the CO detector will go into fault mode after 1 minute Su...

Page 8: ...right height Whether the connection diagram relates to the actual situation see Chapter 8 for the connection diagram Whether the VCD2 is connected to the correct voltage supply Whether the steam trap holds one centimetre of water 6 2 Testing after leaving the factory The VCD2 is tested extensively in our factory When commissioning the device all that needs to be checked is whether the electrical a...

Page 9: ...Instruction and operating guideline CO detector Type VCD2 CO Detector 8 8 Diagram on how to connect the CO detector to the chimney ...

Page 10: ...Instruction and operating guideline CO detector Type VCD2 CO Detector 9 9 APPENDIX 9 1 Calibration of the VCD2 EasyCal 4 20 mA Transmitter Toxic CiTiceLs ...

Page 11: ... Guidelines 4 Connection and Wiring 4 Power supply and Total Loop Resistance 5 Calibration Guidelines 6 Calibrating to Cross Sensitive Gases 6 Recommended Gas Flow Rates 6 User Calibration Procedures 7 8 Standard Span Gas 20mA Signal 7 Non Standard Span Gas within 5 of Full Range 7 Non Standard Span Gas not within 5 of Full Range 8 Important Notes 9 Transmitter Error Condition 10 Reset to Factory ...

Page 12: ...he sensor are unaltered by the addition of the circuit board The microprocessor board removes the need for potentiometers used on the standard boards and only requires a single button press when gas is applied for calibration This makes the calibration process quick and simple to perform All transmitters are fitted with a diffusion mounting assembly the Mounting Nose for convenient mounting and fa...

Page 13: ...very transmitter is supplied precalibrated to a customer specified range The table in the next section gives an indication of the ranges available for each particular sensor Any option can be recalibrated to an intermediate range using the calibration procedure detailed later in this document ...

Page 14: ...f this is not possible discharge yourself by touching a metal part of the equipment into which the transmitter is being installed Ensure that any tools are discharged by contacting them against a metal part of the equipment into which the conditioning electronics is being installed Connection and Wiring Transmitters are designed for standard two wire operation where the output is supplied via the ...

Page 15: ...fferent operating nature of biased sensors which include nitric oxide and hydrogen chloride sensors this link is omitted with these transmitters They therefore require a longer start up time when first powered and must remain powered continuously in the actual application IMPORTANT The transmitter is designed for power supplies within the range 10 35 VDC only Connection to mains electricity will r...

Page 16: ...s for particular sensors can be found on the product datasheets It is important to remember however that cross sensitivity data is only very approximate and cross sensitivities will vary between sensors and sensor batches Therefore it is not advisable to calibrate sensors or transmitters to non target gas as this will result in a degree of measurement error Recommended Gas Flow Rates A minimum flo...

Page 17: ...A to 20 8 mA Example Required 4 20 mA range is 0 500 ppm Available span gas is 480 ppm Dynamic Range is 16 mA Therefore 1 mA 31 25 ppm Expected signal at 480 ppm 15 36 mA 4 mA 19 36 mA 2 Connect loop power to the transmitter 3 Apply clean air or an inert gas to the transmitter for 2 minutes 4 Hold down the program button until the LED flashes at approximately 1 Hz The 4 mA level is now set 5 Apply...

Page 18: ...ther For Reducing Sensors CL2 NO2 Connect the negative to CNT and the positive to SEN Connect CNT and REF together 6 Set the current source to zero 7 Hold down the program button until the LED flashes at approx 1 Hz 4 mA level now set in RAM 8 Set the current source to the value calculated for the full scale of target gas from step 3 9 Press and release the program button 20 mA level now set in RA...

Page 19: ... stored for up to six months They should be kept sealed in the containers in which they were supplied in clean dry air at 0 20 C Sensors should not be stored in areas containing solvent vapours All electrochemical sensors are unsuitable for use in applications where organic solvent vapours are present as exposure may inhibit performance Sensors must not be subjected to any pressure when handling o...

Page 20: ...it burner ok I2 start CO2 demand 04 pump activated I3 pump pressure present 05 chimney valve open make contact in centre I4 selection text CO2 vent activated instead of RGK activated 06 chimney valve closed when desired with CO2 vent activated I5 ES6 chimney valve not closed 07 alarm potential free make contact in centre I6 not in use 08 no alarm potential free IB 0 10V input CO sensor IC not in u...

Page 21: ...PLC plug B72 Delay chimney valve 3000 5 min B02 Delay CO2 activated 1200 2 min B21 Sensor flushing time 1200 1 min B12 Delay pump alarm 300 0 5 min B35 Delay alarm CO too high 600 1 min B89 Input delay ES6 10 1 sec B57 Delay sensor defective min 4 mA 600 1 min Set CO level B32 alarm level 30 ppm By selecting Read in the controller the programme is loaded using the M3 software For this the access c...

Page 22: ...Instruction and operating guideline CO detector Type VCD2 CO Detector 12 ...

Page 23: ...ases for the chimney valve or the CO2 fan This is a potential free contact which can be used as follows 1 230V or 24 VDC will be connected to the common power supply for the purpose of a servo motor for the chimney valve The terminal strips include a separate phase neutral or 24 VDC for this purpose 2 The potential free contact is included in the safety circuit of the CO2 set to shut down in the e...

Page 24: ...larm 2 start device I1 CO2 demand X CO2 DEMAND RELEASE U1 3 way valve I2 release X U2 red light I3 pump pressure X CHIMNEY VALVE CLOSED U3 Burn saf circ Ok X I4 text valve fan X 0000 PPM FLUSH U4 pump activated X I5 ES6 X U5 chimney v open IB sensor X U6 chimney v closed X ID reset U7 alarm X U8 no alarm 3 device has started chimney valve I1 CO2 demand X CO2 DEMAND RELEASE U1 3 way valve X I2 rele...

Page 25: ...m 5 CO2 demand lost I1 CO2 demand NO CO2 DEMAND U1 3 way valve I2 release U2 red light I3 pump pressure X CHIMNEY VALVE CLOSED U3 Burn saf circ Ok X I4 text valve fan X 0000 PPM FLUSH U4 pump activated X I5 ES6 U5 chimney v open IB sensor X U6 chimney v closed X ID reset U7 alarm X U8 no alarm 6 5 minutes after no demand for CO2 I1 CO2 demand CHIMNEY VALVE U1 3 way valve I2 release NOT CLOSED FAUL...

Page 26: ...as started I1 CO2 demand X CO LEVEL TOO HIGH U1 3 way valve I2 release X U2 red light X I3 pump pressure X CHIMNEY VALVE CLOSED U3 Burn saf circ Ok X I4 text valve fan X 0043 PPM FLUSH U4 pump activated X I5 ES6 U5 chimney v open IB sensor X U6 chimney v closed X ID reset U7 alarm U8 no alarm X 9 sensor not connected defective I1 CO2 demand NO CO2 DEMAND U1 3 way valve I2 release SENSOR MALFUNCTIO...