﹡
RJ 45 Socket including the RS232 and analog output,
Power Inlet is used for factory testing only, and
when using 6VDC, the LCO and LVO will not work.
Wall Mount CO2 Monitor
Operating Instructions
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 concentration together with the
relative humidity and temperature. The CO2 monitor can be widely used in the office building, green house,
school, exhibition, shopping mall.
The CO2 monitor
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.
Linear analog output (0~10V Voltage, 4~20mA Current) and Relay output based on CO2 Level.
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
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.
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: Release the screw from the device, take the front cover off.
Step 2: Release the four screws from the backcover, take the CO2 board from the backcover.
Step 3: Using the screw to fix the backcover 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.
Step1 Step2
Step3
Step4 Step5
RJ45 Interface & 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.
COMMON
( ( ( (
LVO-/LCO-/RS232 DGND
))))
, Typical Wiring Diagrams
.
Fig1
：
RJ45 Interface (Side view)
A. Main LCD Display
H. Up Button
B. Power Switch
I. Mode Button
C. Green LED Display
J. Power Inlet
D. Yellow LED Display
K. Gas Entry Hole
E. Red LED Display
L. RJ 45 Socket
(For factory use
only)
F. Enter Button
M. Screw Position
G. Down 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
The Alarm 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, Relay status 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.
8
7
6
5
4
3
2
1
NO
COM
18~26 VAC
RMS
18~36 VDC
24
V
A
C
+/2
4V
D
C
+
24
V
A
C
-/G
N
D
0~
10
V
D
C
O
utp
ut
4~
20
m
A
O
utp
ut
No
t
Us
e
d
R
ela
y C
om
R
ela
y N
O
No
t
Us
e
d
V
A
500Ω
V
J
K
L
B
Off
Off
Off
Off Auto
Auto
Auto
Auto On
On
On
On
A
I
H
G
F
C
D
E
M
