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SMT-IAQ3

Indoor Air Quality Monitor

Manual Ver 1.0

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Summary of Contents for SMT-IAQ3

Page 1: ...SMT IAQ3 Indoor Air Quality Monitor Manual Ver 1 0...

Page 2: ...eed read from cover to cover simply use the parts of the manual that are of interest to you and disregard the parts of the manual irrelevant to your needs Great care has been taken in the preparation...

Page 3: ...l display elements or buttons shown may be active in your SMT IAQ3 The display is dynamic and functions not applicable will not be shown The alarm mute button for example will not be shown until the a...

Page 4: ...Force Fresh Air button which will bring in fresh air The Force Fresh Air button will flash when pressed to indicate that it is running The SMT IAQ3 backlight can also change colour from green to amber...

Page 5: ...isplay as damage may occur When replacing the face on the sensor ensure all wiring is free of the terminals on the base and will not foul on the pins when you close the two halves Hook the top of the...

Page 6: ...ring is the same Wire between the required output and the 0V Com terminals The output voltage will increase with increasing temperature humidity or carbon dioxide levels The output voltage and scale f...

Page 7: ...ou can assign just one sensor such as CO2 to the relay or multiple sensors such as Temp and RH to the relay The installer menu options will permit you to set this relay as a normally de energised or a...

Page 8: ...the SMT IAQ 3 it simply will not power on Communications The SMT IAQ3 has an isolated RS 485 communications capability You can select either Modbus RTU or BACnet MSTP communications protocol from with...

Page 9: ...l be held at their respective safety voltage as defined in the installer menu see page 17 And if the alarm relay is set as fail safe it will energise The LCD will also cycle its colour backlight throu...

Page 10: ...e in the rear of the SMT IQA3 case where wiring enters the rear of the case should be taped over and blocked as any drafts travelling down the inside of the wall could seriously affect the accuracy of...

Page 11: ...options menu it is strongly recommended that you call Smart Temp Australia P L or an authorised distributor for clarification and advice To enter the installer menu first tap then press and hold the c...

Page 12: ...y changes made to the PIN as it will affect how you enter the Installer options menu in the future Default value is 21 Range from 00 to 99 2 Display Temp You can display the room Temp in Deg C Deg F o...

Page 13: ...the IAQ3 CO2 sensor accuracy has drifted you are permitted to apply a small fixed offset Default is 0ppm Adjustment is 100ppm 1ppm steps Caution The NDIR sensor fitted to the IAQ3 is extremely stable...

Page 14: ...loss of power Default is 0 normally de energised Option is 0 normally de energised or 1 Normally energised 12 Beeper The SMT IAQ is fitted with a solid state beeper This beeper can be used to acknowle...

Page 15: ...verride onboard sensor with remote sensor 1 Average onboard sensor with remote sensor 2 Force fresh air 3 Remote mute 4 Simulate Smart Temp sensor output 5 report status to Mobus BACnet 6 Outside Air...

Page 16: ...Active Ventilation Output The SMT IAQ3 can introduce fresh outside air into the room when conditions are suitable This option defines the output s that control this function The letter A will be show...

Page 17: ...0 5V steps 22 Temp Max Voltage This sets the maximum temperature 0 10V output voltage when at the maximum temperature value see Graph on page 5 Default is 10v Adjustments are 0 10V in 0 5V steps 23 T...

Page 18: ...oltage This sets the RH 0 10V maximum output voltage when at the maximum RH value see Graph on page 6 Default is 10v Adjustments are 0 10V in 0 5V steps 28 RH Safety Voltage This sets a constant volta...

Page 19: ...s the CO2 0 10V maximum output voltage when at the maximum CO2 value see Graph on page 5 Default is 10v Adjustments are 0 10V in 0 5V steps 33 CO2 Safety Voltage This sets a constant voltage to the CO...

Page 20: ...deg steps 37 Amber RH Backlight Threshold This option sets the threshold of where the backlight turns from green to amber for humidity Default is OFF Adjustment from Off then 0 to 100 in 1 steps 38 R...

Page 21: ...s is running Default is 0 Modbus Adjustments are 0 Modbus 1 BACnet 42 Communications speed This option permits you to define the communications speed for the selected communications protocol Default i...

Page 22: ...ous options in the installer menu For example should you wish to use the volt free relay to control a 24V drive open closed damper based on CO2 levels you must activate and define the CO2 Relay Alarm...

Page 23: ...is 450ppm to 1 000ppm and the RH range is 75 to 100 but the RH output can be limited to 7V max if required Whether you wish to control a Variable Speed Drive or a modulating damper the wiring and set...

Page 24: ...ally adjusted for each of the SMT IAQ3 sensors 30V 1A max Active Ventilation Function By fitting an outside air sensor the SMT IAQ3 can bring in fresh air to improve the room air quality if the outsid...

Page 25: ...active ventilation function is active If selected in the active ventilation options menu The SMT IAQ3 will modulate the temperature 0 10V output so that the output is at the maximum voltage set when t...

Page 26: ...mits you to open and damper and turn a fan on for example if outside air is suitable This function runs in parallel to any alarm function using these same output s The advanced ventilation option is i...

Page 27: ...Page 27...

Page 28: ...economy cycle with CO2 fresh air override This drawing could be expanded to include ModBus communication for both the Viking and the SMT IAQ3 Touch screen room temperature sensors and over temperature...

Page 29: ...Temperature 5 C To 50 C Operating Rh 0 To 95 Non Condensing 0 10V Outputs 5ma Max Temperature sensor 20 50c Temp Sensor Accuracy 0 5 C at 25 C RH sensor 0 to 95 RH RH Sensor Accuracy 5 at 25 C 30 to...

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