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RJ 45 Socket including the RS232
Wall Mount CO2 Monitor Operating Instructions
Model: ZGw08PR
Product Overview
Thank you for selecting ZGw08PR 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 Indoor Air Quality. The
compact device is designed for use in HAVC in the building. The demand controlled ventilation 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 concentration together
with the ventilation rate. And then adjust the ventilation to the comfort condition automatically by the
setting data. So the over-ventilation of the building can be reduced, and the energy can be saved.
The ZGw08PR can be widely used in the office building, green house, school, exhibition, shopping
mall.
The ZGw08PR is easy to use and has many features:
NDIR ( Non-Dispersive-Infrared) technology used to measure CO2 concentration
Three different LED display show the current Indoor Air Quality situation.
Relay output
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
Front view Back view
Side view
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 entire User Manual before using the
product. These Warnings provide 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.
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 dangerous 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 use only the included power adaptor. Improper power adaptor or power sources can
cause serious damage to the product, or result in injury or death to the user.
8. 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 device.
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 the local dealer 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 circulation---The vents allow the air circulation liquid for measurement of the CO2
concentration and the ventilation should not be blocked.
Installation Step
Step 1: Release the screw from the device, take the front cover off.
Step 2: Release the four screws from the back cover, take the CO2 board from the back cover.
Step 3: Using the screw to fix the back cover to the current outlet, let the wires come out of the hole.
Please pay attention to the terminal block connection data information.
Step 4: Re-assembling the CO2 board by screw to the back cover.
Step 5: After finishing the terminal block wire connection. Press the front cover to the LCD display,
and tighten the Front Cover screw with screwdriver.
Step 6: Connect the AC adapter with the power inlet.
Step 1 Step 2 Step3
Step 4 Step 5 & 6
Wiring Connection
Caution: The RJ45 socket is only for factory calibration use, not for LAN, it was covered by plastic
cover, the incorrect RJ 45 connection will have the risk of circuit damage or irreparable damage
to devices.
Customizing Settings
When the power has been connected, The ZGw08PR CO2 monitor will begin to work. In order to
meet you 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.
Ventilation Rate
：
1. Press up/down to choose the ventilation rate modes.
2. When pressing up button, the LCD display sequence is Vent Rate l/p/s -> Vent Rate cfm/p. When
pressing down button, The LCD display sequence is reverse.
A. Main LCD Display
H. Enter Button
B. Green LED Display
( <800ppm)
I. Screw Position
C. Yellow LED
Display
(800-1200ppm)
J. Terminal Block for
Relay Output
D. Red LED Display
(>1200ppm)
K. Power Inlet for AC
adapter(6VDC)
E. Mode Button
L. RJ 45 Socket
(For factory use
only)
F. Up Button
M. Gas Entry Hole
G. Down Button
Symbol Meaning
Description
CO2 Concentration PPM
Parts Per Million
The current CO2 concentration in your
household.
Ventilation Rate cfm/p
Cubic Feet
Minute/Person
The Present Cubic Feet/Minute Ventilation for
one person.
Ventilation Rate L/P/S
Liter/Person/Second
The Current Liter/ Second Ventilation Rate for
one person.
Alarm
The Alarm Setting Icon,the factory setting with
alarm is buzzer off
Calibration
To calibration the CO2 sensor when the accuracy
deviates from the actual CO2 concentration.
Alarm Level 1
The 1
st
Alarm Level.
Relay status will invert after CO2 level exceeds
AL1
The Buzzer and Yellow LED will work after CO2
level exceeds AL1
Alarm Level 2
The 2
nd
Alarm Level
The Buzzer and Red LED will work after CO2
level exceeds AL2
Recover Factory Setting
To Recover Factory Setting to cancel the
customize Setting
RS232
TX
RX
2. Relay Common
1. Relay Norm Open
M
L
K
J
