"CO2-2" ( PDF 8,92Mb )
Contents
1. ED VENTS www ventilation system com CO 2 2 Wall mounted CO sensor with 1 analog output amp 1 on off output User s Manual E SPECIFICATIONS Parameters Value Power supply Consumption 24VAC 50 60Hz 10 24VDC max 1 6 W Gas sensing element Non dispersive infrared detector NDIR with self calibration system CO measuring range 0 2 000 ppm parts per million Accuracy at 25 C 2 000 ppm 30 ppm 3 of reading Response time lt 2 minutes 2 hours first time 2 minutes operation Analogue output 0 10VDC default 4 20mA selectable by jumpers 1X2A switch load Warm up time for each turning on Oni output Four set points selectable by jumpers Operation conditions 0 50 C 0 95 RH non condensing Storage regulations 0 50 C Net weight Dimensions 120 g 100 mm x 80 mm x 30 mm Mounting standard 65 mm x 65 mm wire box or hang on a nail Standard Approval CE cy MOUNTING AND WIRE CONNECTION e Notice the supply power voltage of the sensor Fig 1 Dimensions 24VAC VDC Do not install the sensor on voltages higher than marked on the sensor e Follows the steps in fig 2 to remove the cover e Mount the sensor on the place where you want to detect CO level Do not mount it near diffuser or any steam source in direct sunlight e Mount the wall plate first there are two dimensions available see fig 1 Place the sensor against the wall at selected location make sure wires pass through the notch on2. cted J5 disconnected 800 ppm CO gt 800 ppm the relay on CO lt 700 ppm the relay off J4 connected J5 disconnected 1 000 ppm CO gt 1 000 ppm the relay on CO lt 900 ppm the relay off J4 disconnected J5 connected 1 200 ppm default CO gt 1 200 ppm the relay on CO lt 1 100 ppm the relay off J4 connected J5 connected 1 400 ppm CO gt 1 400 ppm the relay on CO lt 1 300ppm the relay off E IMPORTANT INSTRUCTIONS Don t shake or hit the sensor too much during shipment or mounting to protect the internal infrared CO sensor from any damage and excursion of infrared receiver When a First use CO sensor or b Reuse CO sensor after a long time unused or c CO measurement is proved to be incorrect by comparing with the measurement of other CO sensors or put the sensor outdoors and its measurement is away from the range of 350ppm 450ppm which is the normal ambient CO concentration then let the self calibration system work as follows Keep the CO sensor energized continuously for at least 2 days to let CO sensor s self calibration system operate properly After more than 2 days calibration if the measurement indicated by the analog output of the CO sensor still exceeds over the accuracy you need to let it self calibrated for a longer time Here s a typical 14 day calibration solution During a 14 day period place the CO sensor twice outdoors or in unoccupied places where CO level is around 400 ppm Each time le
3. t it be there for more than 4 hours and then check the CO measurement via analogue output If the CO measurement is in its accuracy limit it indicates the measurement is correct Notice a Using of cellular telephones or radio transceivers about 60 cm away from the sensor during calibration process could cause sensor interference calibration errors and affect sensor accuracy Please refrain from using these devices during calibration of the sensor b When checking the analog output please avoid breathing out directly to the CO sensor It s recommended to connect the output terminals with the extending wires with length of more than 1 meter When the CO sensor indications become stable after more than 10 minutes turning on check the analog output through the extending wires to avoid influence of breathing process on CO concentration 2 CO2 2_V90 2EN 06 11 2015 14 23 52
4. the wall plate e Connect wires to terminal strips see fig 4 Make sure wiring connection is correct and secure e Follows the steps in fig 3 to close the cover 45 00 Q Transmitter Fig 3 CO2 2 V90 2 EN indd 1 06 11 2015 14 23 51 CO2 2 V90 2 EN indd 2 Fig 4 Wiring j Connection Terminal Function Electrical Data 240VAC 30VDC 2A G Power 24VAC 24VDC lt 2AOVACISONDC 2 Controlled i GO Power ground 24VAC 24VDC 4 20MA co F PN p General Ol 0 10VDC default 2 1 OVDC 0 20mA jay g e PS F oe Analog output 4_20mA 0 2 000 ppm CO man 4 Fan Seley cut lt 240VAC 30VDC 2A switching 5 Common y Outp current resistance load SELECT OUTPUT e Power off first and remove the face cover you ll see a set of short circuit block jumpers in the middle of the right side of PCB board From left to right it s J1 J5 and S1 S2 Choose the type of analogue output or CO level to control the relay following instructions shown in table shown in table below J2 amp J3 are just for manufacture test Please don t change it Jumper 1 S2 Jumper J1 Analog outputs Lower two pins blocked disconnected 0 10VDC default Upper two pins blocked disconnected 0 20mA Lower two pins blocked connected 2 10VDC Upper two pins blocked connected 4 20mA Jumper J4 J5 CO level The relay turns on turns off J4 disconne
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