Install Instructions

ManualsBrandsVeris ManualsCO2 SensorsProtocol Air Quality Sensor for CO2, Humidity, & Temperature, Transmitter, BACnet MSTP/Modbus

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NOTICE

• This product is not intended for life or safety applications.

• Do not install this product in hazardous or classied locations.

•

Read and understand the instructions before installing this product.

• Turn o 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 specied 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.

Installation Guide

Air Quality

Product Identication

Product Overview

The CW2 Protocol Series of air quality sensors for living space is a exible multi-sensor platform for use with BAS

controllers designed to accept BACnet or Modbus outputs. CW2 Protocol Series sensors are available with three

user interface options: touchscreen, LCD with three buttons and blank. CO

and temperature sensors are included

with all CW2 Protocol Series air quality sensors. Models with VOC sensors and relative humidity sensors are also

available.

* Replaceable 1% with NIST certicate, 2% with NIST certicate and 2% elements available.

CW2 Protocol Series

Wall Mount Air Quality Sensors

Specications

OPERATING ENVIRONMENT

Input Power Class 2; 20 to 30 Vdc, 24 Vac, 50 to 60 Hz

Protocol Output BACnet or Modbus via RS-485, selectable

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)

CO2 TRANSMITTER

Sensor Type Non-dispersive infrared (NDIR), diusion sampling

Output Range 0 to 2000 ppm

Accuracy ±30 ppm ±3% of measured value

Repeatability ±20 ppm ±1% of measured value

Response Time <60 seconds for 90% step change

VOC TRANSMITTER OPTION

Sensor Type Solid state

Output Range 0 to 100% AQI for VOC

Accuracy ±15% of measured value

Output Scale 0 to 1,000 ppb of total VOC (TVOC)

CW2TPxxx CW2LPxxx CW2XPxxx

CW2

User Interface Output RH Accuracy* VOC Sensor

T = Color touchscreen

L = 3-button LCD display

X = None

P = BACnet/Modbus 2 = 2%

X = None

V = NDIR CO/VOC

= None

Summary of content (12 pages)

PAGE 1
Installation Guide Air Quality CW2 Protocol Series CW2TPxxx CW2LPxxx CW2XPxxx The CW2 Protocol Series of air quality sensors for living space is a flexible multi-sensor platform for use with BAS controllers designed to accept BACnet or Modbus outputs. CW2 Protocol Series sensors are available with three user interface options: touchscreen, LCD with three buttons and blank. CO2 and temperature sensors are included with all CW2 Protocol Series air quality sensors.
PAGE 2
CW2 Protocol Series Installation Guide Specifications (cont.) Level AQI Table* >61% Ventilation Recommendation TVOC (ppb) Greatly increased >610 20 to 61% Significantly increased 200 to 610 10 to 20% Slightly increased 100 to 200 5 to 10% Average 50 to 100 0 to 5% Target value 0 to 50 RH TRANSMITTER OPTION HS Sensor Thin-film capacitive, replaceable Accuracy ±2% from 10 to 80% RH @ 25°C (77 °F) Hysteresis 1.
PAGE 3
CW2 Protocol Series Installation Guide Dimensions 115 (4.5) 85 (3.3) 24 (0.9) Functions The CW2 Protocol Series sensor measures CO2, VOC (if equipped), RH (if equipped) and temperature in a room and provides protocol outputs to a controller. Installation 1. Remove the cover from the base at the bottom of the device. 2. 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.
PAGE 4
CW2 Protocol Series Installation Guide Installation (cont.) 4. Mount the backplate onto the wall using the screws provided. Six screw holes available. Use a minimum of two for secure mounting. 5. Connect the wires to the screw terminals. Do not over-tighten the screws. CONTROL SYSTEM RS-485 (+) RS-485 (-) COMMON POWER SUPPLY 20-30 Vdc, 24 Vac - COMMON + POWER (+24) 5 4 3 2 1 Configure the device. Address Configuration: Each device on a single network must have a unique address.
PAGE 5
CW2 Protocol Series Installation Guide Installation (cont.) Address the device as any whole number between and including 1 to 127. Note that zero is not a valid address for Modbus; zero is a valid address for BACnet. Positions 1 through 7 of the “ADDRESS” DIP switch designate the address. Position 8 toggles between the Modbus and BACnet communication protocols, as shown in the diagram below. This is the left bank of DIP switches on the sensor.
PAGE 6
CW2 Protocol Series Installation Guide Installation (cont.) Example: No Parity, 19200 Baud 1 2 3 4 5 6 7 8 off off on off 19200 Baud off off off Unused off None Modbus Point Map Function Codes: Function Code 03 04 06 16 01 05 15 * Not supported. Function Read holding (RW) registers Read input (RO) registers Write single register* Write multiple registers Read coils Write single coil Write multiple coils All of these values correspond to BACnet objects with the same name.
PAGE 7
CW2 Protocol Series Installation Guide Installation (cont.) BACnet Descriptions Note: In the tables below, all properties are read-only unless otherwise noted. “Preserved” means the value is maintained through power outages.
PAGE 8
CW2 Protocol Series Installation Guide Installation (cont.) Object Name Object Identifier Object Property Display CO2* BV8 ACTIVE displays CO2 level on Screen INACTIVE removes CO2 level from Screen Display VOC* BV9 ACTIVE displays VOC level on Screen INACTIVE removes VOC level from Screen Screen Color Set* MSV 1 Selection for Screen Color Theme Fan Speed* MSV 2 Fan Speed Selection * Preserved during power outages.
PAGE 9
CW2 Protocol Series Installation Guide Touchscreen Operation Main Screen The touchscreen user interface displays applicable sensor output values (temperature, RH, CO2 and VOC), setpoint value, menu button and CO2 stoplight status (if enabled). Setpoint value (temperature setpoint shown) Menu button VOC AQI value Fahrenheit/Celsius Temperature value CO2 value RH value Menu Screen The menu screen opens when pressing the Menu button on the main screen.
PAGE 10
CW2 Protocol Series Installation Guide Touchscreen Operation (cont.) Settings Menu Button Functions (cont.) Submenu Only This icon provides the ability to change the color scheme of the display. Temp Setpoint Adjustment Submenu Only Click this icon to access the setpoint change menu. Humidity Setpoint Adjustment Submenu Only Click this icon to access the setpoint change menu. Fan Speed Click this icon to access the fan speed menu.
PAGE 11
CW2 Protocol Series Installation Guide LCD Display Operation Button Functions Change Values Menu Advance Change Values Display Icons The main screen displays sensor values for CO2, VOC (if equipped), RH (if equipped), temperature and Celsius/Fahrenheit.
PAGE 12
CW2 Protocol Series Installation Guide Setpoint Function (cont.) Fan Speed Setpoint Adjustment Low Press the Menu Advance button Adjusts setpoint up Medium Adjusts setpoint down After adjustment, wait 6 seconds or press the Menu Advance button. Setpoint is accepted and the main screen appears. High Note: Fan speed scale flashes when in Set mode. Off setting is default.