Wiring diagram
– RS485
Connect A1 and B1 with the
equipment’s A and B, the recommended wire to use is
22AWG Shielded Foil Twisted-Pair (SFTP)
Power on verification
‧
After the product has been installed, the power indicator lights up after the power is
connected, and the air quality indicator turns blue, which means the device is
turning on at this time. If green or yellow appears, it means that the device has
completed booting and the current air quality status is displayed. If the power
indicator does not light up, please verify that the power cord is properly connected
and that there is a supply of power.
Do not inject contaminants
Do not directly inject contaminants containing gases or particulate matter.
Exposure to excessive contaminants can permanently damage the sensor.
Do not repair this product yourself
The product does not have components that users can repair themselves. Do not
attempt to open it. Once the warranty sticker breaks, the warranty is void.
【
Note
】
Do not insert objects through the vents, which may be
dangerous and damaging.
Prohibit live line operation
When the installer configures DIP switches and terminal connector, be sure to
power off before execution and then power on after.
‧
In RS485 control mode, if the equipment is successfully connected, the
equipment status indicator is static on/off or it will keep blinking.
‧
The installer can verify ventilation volume by switching to manual mode with fixed
fan speed.
‧
After a period, the health of the filter will return to zero. At this time, it is recommended
to replace the filter. After the replacement, you can press and hold the factory reset
button on the back of the product to reset.
DIP switches
1
2
3
4
5
6 7
8
Enable smart control function
‧
Turn all the DIP switches up, press the multi-func. button then power on, release the
button after the filter health LED blinks, and confirm that the screen has changed
successfully after restarting, and then restore the DIP switches as previously stated.
Wiring diagram - DO(digital output)
Note
To connect multiple equipment, you must set different Modbus slave address.
Please reference the user manual of
that equipment
to config slave address.
Connect multiple equipment
‧
The product can connect to the 4 same equipment via RS485 in series through
daisy chain - linear topology. At this time, each device will follow the same
control mode and fan speed level.
Wiring diagram
Fan speed levels
Control interface
12V GND B A
6
7
Unlimited
1 level
6
7
3 levels
6
7
2 levels
6
7
8
RS485
Delta ERV
“VEB250AT3”
Dip switches
11
10
12 13
B1
A1
Vin
14
Vout
6
5
7
8
9
2
1
3
4
B2
A2
NO2 NO1
NO3
NO4
AI2
AI1
GND
Low fan speed
Medium fan speed
High fan speed
NO4
COM
12VDC
AC250V
+
-
ON/OFF
NO1
COM
【
APP and website links
】
The product is equipped with wireless technology and can use an APP and website
to monitor the air quality status, which can be obtained using the following QR
codes. (For the wireless model only). Please go to the official website to learn about
how to use the product.
iOS APP
Android APP
UNOweb
Doc. & Resources
1 level output (ON/OFF)
3 level output (FAN speed)
12VDC
AC250V
or/and
Note
•
DIP switches pin8 should be turned ON
•
External relay requirement : AC250V resistive, and 12VDC SPDT, 15A
Factory reset
‧
Click this button 3 times within 2 seconds will trigger factory reset. The values
below will be restored to default. “MQTT broker setting”, “Sensor calibration settings
(Temperature/HCHO)”, “Software Setting”, not include “Modbus baud rate setting”
【
Note
】
Not following instructions may result in damage to the product or other items.
Using right connectors and ports
‧
Do not force the connector into the port. Check the port for foreign objects. If the
connectors and ports do not fit easily, it may be because they do not match each other.
Make sure that the connector matches the port, and that the connector is aligned to
the correct location corresponding to the port.
‧
Insert the wrong pin may result in damage to the product, it will not be responsible for
the product warranty.
+
12VDC
AC250V
+
12VDC
AC250V
NO3
NO2
COM
COM
-
-
5
6
4
(depend on equipment)
【
Note
The product supports control of energy recovery ventilation and
inline fan. Regarding the compatibility of equipment brands and models, please
contact your dealer and local sales for technical evaluation before purchasing. No
matter RS485 or digital output, control logic is fixed for smart ventilation control,
PLEASE DON’T TO USE FOR OTHER APPLICATIONS
Pin
Name
Definition
1
GND
Ground
2
AI1
Analog input-1 External
temperature sensor
3
AI2
Analog input 2
4
NO4
Digital output - HF
5
NO3
Digital output - MF
6
NO2
Digital output - LF
7
NO1
Digital output
– ON/OFF
8
B2
Modbus slave B
9
A2
Modbus slave A
10
B1
Modbus master B
11
A1
Modbus master A
12
GND
Ground
13
Vin
9-24V DC input
14
Vout
9-24V DC output
Number
Switch Definition
ON
OFF*
1
Modbus terminal resistor
2
Modbus slave position [3]
3
Modbus slave position [2]
4
Modbus slave position [1]
5
Modbus slave position [0]
6
Maximum fan speed [1]
7
Maximum fan speed [0]
8
Control mode selection
* The above are the default states of the DIP
switches
Terminal block pin function definition
DIP switch function definition
【
Hardware Interface
】
【
Step for Equipment Control
】
Cleaning the exterior of UNOnext
To clean the product, unplug the power cord and all wiring.
Wipe with a soft, cotton-free cloth. Avoid moisture at any openings on the device
body. Please do not spray liquids directly onto it.
【
Specification
】
【
Sensor specification
】
Operating range
0
o
C to 50
o
C, 10-90 %RH, IP20
Storage temp.
-20
o
C to 70
o
C
Power requirements
Input 1 : 9-24VDC +/-10% or
Input 2 : Power adapter 12V/1A
Power consumption
Max 500mA@12VDC
Ventilation control
RS485 or DO(low active)
Dimensions
14.2 cm(L) x 6.8 cm(W) x 4.2 cm(D)
Weight
208 g
Display
1.3'' OLED
Accessories
Wall mount
Language
Chinese, English
Connectivity
RS485, Wi-Fi 2.4G, 802.11 b/g/n, BLE 5.1
Items
Measurement Range
Accuracy
Temperature
0 - 50
o
C
± 1
o
C
Humidity
0 - 100 %RH
± 5%
CO
2
400 - 10000 ppm
±30 ppm ±
3%
PM2.5
0 - 1000 ug/m
3
± (5 µg/m³ + 20%)
於
0-100 µg/m³
± 10% at 100-1000 µg/m3
PM10
0 - 1000 ug/m
3
± (5 µg/m³ + 20%)
於
0-100 µg/m³
± 25% at 100-1000 µg/m3
Luminance
0 - 10000 lux
For background ambient light reference
HCHO
0 - 5000 ppb
± 15%
CO
0 - 500 ppm
± 20 ppm or ± 5%
O
3
0.5 - 10 ppm
0.01 ppm
TVOC
0 - 30000 ppb
± 15% in lab test (Ethanol)
