Manual

Dokument

IMA 203

Rev

Page

1 (4)

Installation manual

CF3-W-US, CF3-W-US-Disp

transmitter

CF3-W-US CF3-W-US-Disp

General

The IAQ-sensor product CF3-W-US (sensor for wall mounting) is designed to

measure carbon dioxide (CO

) in rooms. Option - Disp displays the measured CO

value in ppm (parts-per-million) on the LCD.

The units are designed for connecting to Direct Digital Control (DDC). The two

parallel signal outputs OUT1 (0-10 V) and OUT2 (2-10 V or 4-20 mA) give linear

signals corresponding to the measuring range.

The OUT2 output also indicates the status by setting the output voltage to 1 V or

current to 2 mA when the sensor self-diagnostics detects any error.

To open the wall mounted housing

Figure 1 Closed housing seen from the top and the side. The housing is opened by inserting a screw

driver and pushing to the front side of the housing. The locking hooks will then be released.

Front

Wall

Insert screw driver

Push upwards to open

Front

Wall

PAGE 1
Installation manual CF3-W-US, CF3-W-US-Disp CO2 transmitter CF3-W-US CF3-W-US-Disp General The IAQ-sensor product CF3-W-US (sensor for wall mounting) is designed to measure carbon dioxide (CO2) in rooms. Option - Disp displays the measured CO2 value in ppm (parts-per-million) on the LCD. The units are designed for connecting to Direct Digital Control (DDC). The two parallel signal outputs OUT1 (0-10 V) and OUT2 (2-10 V or 4-20 mA) give linear signals corresponding to the measuring range.
PAGE 2
Figure 3 Closed housing seen from the side The housing is opened by inserting a screw driver and pushing left (to the front side). The locking hooks will then be released. Figure 2 Closed housing seen from the side Never push to the right. The locking hooks may break and the housing is damaged.
PAGE 3
Electrical connections ~ + The power supply has to be connected to and . is considered as system ground. The same ground reference has to be used for the CF3-W-US unit and for the DDC/signal receiver.
PAGE 4
Configuration jumper for OUT2 output The output OUT2 can be used as a voltage or current output. The output is configured by the jumper on top of the PCB. The configuration of the output can be changed by moving the jumper to the desired position. The output has to be reconfigured before the unit is powered up.