ZyAura ZGw19C User manual

Wall Mount CO2Monitor Operating Instructions
Model: ZGw19C
Product Overview
Thank you for selecting this CO2 wall mount monitor. This product was developed to detect the presence
of CO2 in the ambient air and help people to take care of the IAQ (Indoor Air Quality). The compact device
is designed for use in HAVC in the building, also the greenhouse with the CO2 concentration control.
By using the CO2 monitor as the indicator, it can easily get the current CO2 concentrationtogether with the
relativehumidity and temperature. The CO2 monitor can be widely used in the office building, green house,
school, exhibition, shopping mall.
The CO2 monitoris easy to use and has many features:
Dual Beam NDIR (Non-Dispersive-Infrared) technology used to measure CO2 concentration.
Three different LED display show the current Indoor Air Quality situation.
Optional analogue and digital output : linear analog output(0~10V Voltage, 4~20mA Current) and
RS232
Reliable Sensor provides long-term calibration stability.
The visual and audible alarm function can be adjustable by user.
Mounting bracket with terminal block provides quick easy installation.
Operation Instruction
Power Switch Function:
When switch is “ON”, relay output is always closed; when switch is “AUTO”, relay output is
controlled by user; when switch is “OFF”, it means the device is power off.
LCD Display Symbol
Safety Instruction
Warning: Your safety is very important to us .To ensure you use your product correctly and safety,
we would like to your attention to read those warning and the User Manual before using the product.
These Warning provides important safety information and should be observed at all times.
1. Please take the devices lightly, do not subject the product to impact or shock. Otherwise, this
may cause the accuracy drift
2. Do not immerse the product in water.
3. Please pay attention to the terminal block connection instruction, the wrong mode of operation or
opposite installation will destroy the circuit of the devices.
4. Do not touch the exposed electronic circuitry of the device under any circumstances. Keep the
circuit is close during installation. As there is the danger of electric shock.
5. Please keep the devices away from children touch to avoid the danger or the accident.
6. Do not keep the product under the hot and moisture environment. Keep the product away form
the heat source or near water.
7. Please ensure the screws are fixed on the wall tightly. Do not let the screws approach or close to
the surface of PCB board during installation. It has the risk of circuit damage or irreparable
damage to devices.
Caring for product
To make sure you receive the maximum benefit from using this product, please observe the follow
guideline.
1. Cleaning—disconnect the power before clean. Use a damp cloth; do not use the liquid cleaning
agent, such as benzene, thinner or aerosols.
2. Repair----Do not attempt to repair the product or modify the circuitry by yourself. Please contact
with our local dealer time or a qualified repairman if the product needs servicing.
3. Calibration--- Please observe the calibration operation to make sure the accuracy for the devices
when it’s necessary.
4. Air diffusion—The ventilation slots on the housing are designed for CO2 diffusion, so these
ventilation slots should not be blocked.
Installation Step
Step 1-3:Remove the back cover by releasing the top screw.
Step4: Secure the back cover(mounting plate) to the junction box on the wall. And make sure the
wire connections.
Step 5: Finish the installation by mounting the controller on the back cover.
Wiring Connection
. Typical Wiring Diagrams
EarPhone pin define:
ZGw19 C provide earphone jack with RS232 function, How to connect please reference below
picture.
A. Power Switch H. Down Button
B. Main LCD Display I. Enter Button
C. Green LED Display J. Phone Jack
D. Red LED Display K. Gas Entry Hole
E. Yellow LED Display L. Screw Position
F. Mode Button
G. Up Button
Symbol Meaning Description
CO2 Concentration PPM
Parts Per Million
The current CO2 concentration in household,
greenhouse, school, hospital, exhibition,
shopping mall and other office or commercial
buildings.
Alarm TheAlarm Setting Icon, the factory setting with
alarm is buzzer off
Calibration To calibrate the CO2 sensor when the accuracy
deviates from the actual CO2 concentration
Alarm Level 1 Under HVAC mode, Relaystatus will invert, the
Buzzer and Yellow LED will work;
Under Greenhouse mode, Yellow LED will work.
Alarm Level 2 Under Greenhouse mode, Relay status will invert, the Buzzer and Green LED will work.
Under HVAC mode, Red LED will work.
Recover Factory Setting To Recover Factory Setting to cancel the
customized setting
Lock Icon “ON” means No key response
BLANK To disable some part content of display on the
LCD.
Step 1 Step 2 Step 3
Step 4 Step 5
Front Back
Side

Customized Settings
When the power has been connected, the CO2 monitor will begin to work. In order to meet your
personal requirement, it is advisable to set up the customizing parameter.
WarmUp: It lasts approximately 1min before WARM UP disappears; all MODE functions will not
response during warm up.
Mute Mode：
PRESS
MODE
PRESS
ENTER
PRESS
UP/DOWN
PRESS
ENTER
1. Press the MODE, the speaker icon flashes simultaneously.
2.Press ENTER, use up/down to select the on/off.
3. Press ENTER again to save the setting.
Setting the ALARM 1 level:
PRESS
MODE
PRESS
ENTER
1.Press MODE, until the ALARM 1 iconflashes.
2.Press ENTER. Using the Up/Down to set the parameter.The default alarm 1 is
800 ppm (HVAC), 1000ppm (GreenHouse).
3.Press ENTER again to save the data.
Setting the ALARM 2 level:
PRESS
MODE
PRESS
ENTER
1.Press MODE, until the ALARM 2 iconflashes.
2.Press ENTER. Using the Up/Down to set the parameter.The default alarm 2 is
1200ppm (HVAC), 600ppm (GreenHouse).
3.Press ENTER again to save the data.
Note: The factory setting with alarm is buzzer off; user can set the alarm on/off according to alarm
function instruction.
Setting the Calibration mode:
1.Press the MODE. Until the CALI icon flashes.
2.Press the ENTER, CALI show on the display.
3.Adjust the display to the required CO2 value (user can pump the CO2 gas or use outside
natural gas while calibrating) by up/down button.
4.Press the MODE more than 10 sec, CALI flashes. Calibration will be done automatically after
about 3 minutes and LCD will display “Pass” or “Fail”. If it shows “Fail”, please try again.
Setting the AltiMode：
1. Press MODE, until the ALTI icon flashes.
2. Press ENTER,ALTI show on the display meter.
3.Adjust altitude by up/down button to the actual location level.
4.Press ENTER again to save the data.
Using Blank Mode:
PRESS
MODE
PRESS
ENTER
PRESS
UP/DOWN
ENTER
PRESS
ENTER
PRESS
OR PRESS
UP/DOWN
1. Press MODE, until the Blank icon flashes.
2. Press ENTER, Blank show on the display of blank mode.
3.Adjust blank mode by up/down button.There are 3 kinds of mode to change: all show, CO2
show, none show.
4. Choose one of these three modes and press ENTER again to save the blank status.
Using the RcFS Mode:
PRESS
MODE
PRESS
ENTER
U
1.Press MODE, until the RcFS flashes simultaneously.
2.Press ENTER,Using the Up/Down to select the No/Yes
3.After the selecting,Press the ENTER to save the changes.
Remark: If the user setting the data or calibrate the sensor wrongly. You can use the RcFS
(Recover the factory Setting) to come back the factory setting data.
Advanced Mode
Press the Enter and Up together for about 10 seconds to enterAdv Mode, there will be “lock” and
“mode” on the LCD. Remind these setting will change the features of LED /Relay andAnalogue
output.
Using Lock Icon:
1. Press the Enter and Up together for about 10 seconds to enterAdv Mode, there will be
“Lock” on the LCD. Press Up or Down, the LCD will show “on” or “off”.
2. If select “off” and press the Enter button, these 4 keys are enable.
3. If select “on” and press the Enter button, these 4 keys are disable (will not response to the
user’s action).
HVAC/GreenHouse（GH）Mode:
1. Press the Enter and Up together for about 10 seconds to enter AdvMode, Press Up or
Down until appear the “mode”, then press the Enter button, the LCD will show “HVAC”or “GH”.
2. If select “HVAC” and press the Enter button,AL1 will always be less than AL2.
3. If select “GH” and press the Enter button, AL2 will always be less thanAL1.
PRESS
UP/DOWN
PRESS
ENTER
PRESS
MODE
PRESS
ENTER
PRESS
UP/DOWN
M
PRESS
MODE 10s After
10 min
PRESS
ENTER
PRESS
UP/DOWN
PRESS
ENTER
PRESS
UP/DOWN
PRESS
ENTER
PRESS
UP/DOWN
PRESS
ENTER
PRESS
UP/DOWN
PRESS
ENTER
PRESS
ENTER
+UP 10s
PRESS
ENTER
PRESS
ENTER
+UP 10s
PRESS
UP/DOWN
PRESS
ENTER
PRESS
MODE
PRESS
ENTER
PRESS
UP/DOWN
PRESS
ENTER

Ref.No.：072016
The CO2 concentration and voltage diagram: (The line①represents CO2 concentration, the
line②represents voltage/ current)
1.When select “HVAC”,AL1 <AL2 (HVAC), if CO2 concentration is rising, the voltage/current will
increase.
2. When select “GH”, AL1＞AL2 (GH), if CO2 concentration is rising, the voltage/current will
decrease.
Remark:
Under GreenHouse Mode, the AL1 must >AL2.
For example:AL1= 900ppm,AL1= 800ppm now, user decreaseAL1= 700ppm,AL2 will become 700-Step,
(AL2= 600ppm,if step=100ppm; AL1= 680ppm,if step= 20ppm).
Specification
Method –Dual Beam NDIR (Non-Dispersive-Infrared)
Sample Method -Diffusion or flow through (50 ~200 ml/min)
■CO2Specifications:
Measurement Range 0-3,000 ppm display
Display Resolution 1ppmat 0~1,000ppm;10ppm at 1,001~3,000ppm
Accuracy ±75ppm or ±5% of reading, whichever is greater
Repeatability ±20 ppm @400ppm
Temperature Dependence Typ.±0.2% of reading per °C or ±2 ppm per °C, whichever is
greater, referenced to 25°C
Pressure Dependence 0.13% of reading per mm Hg
Response Time About 2min for 90% of step change
Warm-Up Time About 60 seconds at 22°C
Sound Alarm About 65db@10cm
Zone LED Display
Green:<800ppmYellow:800~1200ppm Red: >=1200ppm
(HVAC mode)
Green:>1000ppmYellow:600~1000ppm Red: <=600ppm
(GreenHouse mode)
Power Supply DC (24V)
Linear Voltage Output
(optional) 0~10VDC (100 Ohms output impedance)
Linear Current Output(optional)
4~20mA(Max Load is 500 Ohm)
( Max Load is 400 Ohm while power supply＜20 VDC )
RS232 (optional) Bund rate: 19200，Data length: 8bit Stop bit:1bit Parity bit:
none
Relay Output 30VDC or 250VAC, max 2A., SPST .Normally Open
Operating Temperature 0°C ~50°C (32°F~122°F)
Operating Humidity Range 0 ~ 95% RH non-condensing
Storage Temperature -20°C to +60°C (-4°F to 140°F)
■Temperature specification:
Temperature Range Display 0°C to 50°C
Display Resolution 0.1°C
Display Options °C
A
ccuracy
Relay (no action and be under the
alarm level)
±1°Cwhen the fan blows to the device directly, the accuracy
of temperature is +/- 1.5 °C
A
ccuracy
Relay (action and exceeds the
alarm level)
±2.5°Cwhen the fan blows to the device directly, the
accuracy of temperature is +/- 1.5 °C
Response Time 20-30 minutes (case must equalize with environment)
■RH Specification:
Measurement Range 20%-90% RH
Display Resolution 1%RH
Accuracy ±5%RH@23°C
Response Time About 5 min for 63% of step change
■Operating Conditions:
Operating Temperature 0°C to 50°C
Humidity Range 0 ~ 95% RH non-condensing
Dimension
Calibration
Notice: Before calibrating,you need standard gas or semi-standard gas; there are 3 methods to get
standard gas.
■Method A: use CO2 in office/building
-Use two Meters (One is the device for calibration. The other one is a calibrated (new) one.
-Use ambient room gas for calibration in office, waiting at least 10min,until the CO2 reading
doesn’t change
(Notice: user must not breathe toward the CO2 monitor, CO2 from the user will affect the reading
of CO2 monitor)
-Use the reading of the new device as the standard
-Calibrate the device by the Cali Mode instruction.
■Method B: use CO2 outsides
-Use ambient room gas for calibration outsides,waiting at least 10min,until the CO2 reading
doesn’t change
(Notice: user must not breathe toward the CO2 monitor; CO2 from the user will affect the reading
of ZGw19C)
-Use 380~420ppm as the standard reading.
-Calibrate the device by the Cali Mode instruction.
■Method C: use standard CO2 in the bottle
-Pump the standard CO2 gas (0~1000ppm, flux = 0.1~0.2 liter/min) into the CO2 monitor from
the Gas Entry Holewaiting about 2~3min.
- Calibrate the device by the Cali Mode instruction.
Fault Codes &Troubleshooting Guide
This section includes a list of FrequentlyAsked Questions for problems you may encounter with the
ZGw19C CO2 Monitor.
No
LCD Fault
Icon Description of the fault Suggested Actions
1 Er3
The ambient temperature has
exceeded the temperature range
0°C to 50°C ( 32°F to 122°F)
This error will disappear when the
temperature returns to the range
between 0°C and 50°C ( 32°F to
122°F)
2 Er4
some wrong measurement or the
sensor has exceeded its expected
life
Please power on the device again. If
the “Er4” always appears, please
contact with the local dealer.
3 Er5
Er6 EEPROM System Problem Please power on the device again . If
the “Er5, Er6” always appear, please
contact with the local dealer.
4 Er7 Internal Data Transmission Error Please power on the device again.
Radiant Innovation Inc. Http://www.ZyAura.com
1F, No.3, Industrial East 9th Road, Science-Based
Industrial Park, HsinChu, Taiwan 300.
mm(inches)