VERIS CWE2C Economy Wall Mounted Air Quality Sensors Installation Guide

: June 14, 2024
: VERIS

Table of Contents

CWE2C Economy Wall Mounted Air Quality Sensors
Product Overview
Product Identification
Specifications
Dimensions
CO2 Sensor Calibration
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CWE2C Economy Wall Mounted Air Quality Sensors

CWE2 CWE2 Series
Economy Wall Mounted Air Quality Sensors

NOTICE

This product is not intended for life or safety applications.
Do not install this product in hazardous or classifed locations.
Read and understand the instructions before installing this product.
Turn of all power supplying equipment before working on it.
The installer is responsible for conformance to all applicable codes.
If this product is used in a manner not specifed by the manufacturer, the protection provided by the product may be impaired. No responsibility is assumed by the manufacturer for any consequences arising out of the use of this material.

Product Overview

The CWE2 Series of air quality sensors for living space are for use with BAS controllers designed to accept 4 to 20mA, 0 to 5 Vdc or 0 to 10 Vdc outputs. These sensors measure CO2 levels using a dual-beam, non-dispersive infrared (NDIR) technology.
The CWE2 Series Economy sensor has an accuracy of ±30 ppm ±3% of measured value, features 2-wire 4 to 20mA and 3-wire voltage outputs, and is available with optional temperature output.

Product Identification

User Interface
CWE2 = None
Blank
C= 1000 PT RTD
D= 10K T2 thermistor
H= 10K T3 thermistor
K= 10K curve G/11K shunt
M= 20K NTC thermistor
N = 1.8K TAC thermistor

Specifications

OPERATING ENVIRONMENT

Input Power| Class 2; 20 to 30 Vdc, 24 Vac, 50 to 60 Hz
Max. Current| 20 mA
Analog Output| Selectable 4 to 20 mA, 0 to 5 V, 0 to 10 V
Analog Voltage Output Mode| 51(0 minimum load resistance
Analog Current (mA) Output Mode| 5000 maximum load resistance
Operating Temp. Range| 0 to 50 °C (32 to 122 °F)
Operating Humidity Range| 0 to 95% RH non-condensing
Housing Material| High-impact ABS plastic
Terminal Block Torque| 0.5 to 0.6 N-m (0.37 to 0.44 in-lbf)
IP Rating| IP 30
Mounting Location| For indoor use only. Not suitable for wet locations.
Surface Mount| The device can be surface mounted on Single Gang 1-Box, British Standard and CE60 wall boxes

COs TRANSMITTER

Max. Load Resistance*| 100 0 at 20 Vdc
250 0 at 24 Vdc
500 0 at 30 Vdc
---|---
WIRING TERMINALS
Terminal Blocks| Screw terminals, 18-24 AWG
Screw Terminal Torque| 0.2 N-m (2.0 in-lbF) max.
WARRANTY
Limited Warranty| 3 years
COMPLIANCE INFORMATION
Agency Approvals| UL 916, European conformance CE:
EN61000-6-2 EN61000-6-3 EN61000 Series – industrial immunity
EN 61326-1 FCC Part 15 Class B, REACH, RoHS, RCM (Australia), ICES-003 (Canada)

Applicable for CWE2 4-20 mA current mode only. If load parameters are not met, product will reset.

Dimensions

VERIS CWE2C Economy Wall Mounted Air Quality Sensors
-Dimensions

Functions The CWE2 Series sensor measures CO2 and temperature (if equipped) in a room and provides analog outputs to a controller.
Installation

Remove the cover from the base at the bottom of the device.
Position the sensor base vertically on the wall 1.35 m (4.5 ft.) above the floor with the “UP” arrow facing upward. Locate away from windows, vents and other sources of draft. If possible, do not mount on an external wall, as this may cause inaccurate temperature readings.
Pull 18 or 22 AWG cable(s) through the hole in the backplate.
Mount the backplate onto the wall using the screws provided.Connect the wires to the screw terminals. Do not over-tighten the screws. CWE2 voltage output wiring diagram:

CWE2 current output wiring diagram:Set the DIP switches.

Switch	Function	Description
1	Output mode	ON – 4-20mA output mode enabled

Only used with voltage output mode enabled. Not applicable to setpoint output. Setpoint is 0-10V fixed.
1. With sensor base fully installed, align top of cover to mounting tabs on top of sensor base. Swing cover downward until it latches at the bottom.
2. Install locking screw to secure cover in closed position.

CO2 Sensor Calibration

There are two methods for CO2 calibration available: 400 ppm baseline calibration and automatic baseline calibration (ABC).
400 ppm Baseline Calibration
400 ppm baseline calibration allows the sensor to be set at 400 ppm. Push and hold the calibration button for 3 to 5 seconds. The LED will flash green. Once the button is released, calibration is complete and the LED switches off.
VERIS CWE2C Economy Wall Mounted Air Quality Sensors
-Baseline Automatic Baseline Calibration (ABC)
The ABC mode addresses the 400 ppm calibration. It allows turning on or off a background correction/recovery mode that will minimize any calibration error that has been caused by shock during handling and transportation or is caused by a long term shift in measurement. The ABC algorithm constantly keeps track of the sensor’s lowest reading over a preconfigured time interval and slowly corrects for any long-term drift detected as compared to the expected fresh air value of 400 ppm. After initial startup, it is expected that the sensor reaches specified accuracy after 7 to 21 days.
China RoHS Compliance Information
Environment-Friendly Use Period (EFUP) Table
This table is made according to SJ/T 11364.
O: indicates that the concentration of hazardous substance in all of the homogeneous materials for this part is below the limit as stipulated in GB/T 26572.
X: indicates that concentration of hazardous substance in at least one of the homogeneous materials used for this part is above the limit as stipulated in GB/T 26572 Z000057-0B

Z207933-0D

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