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Installation manual
CF3-W-US, CF3-W-US-Disp
CO
transmitter
2
General
The IAQ-sensor product CF3-W-US (sensor for wall mounting) is designed to
measure carbon dioxide (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
Front
Wall
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.
CF3-W-US
CF3-W-US-Disp
) in rooms. Option - Disp displays the measured CO
2
Insert screw driver
Push upwards to open
Front
Wall
Dokument
Rev
IMA 203
1
2
Page
1 (4)
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Table of Contents
Related Manuals for Thorne & Derrick rotronic CF3-W-US
Summary of Contents for Thorne & Derrick rotronic CF3-W-US
- Page 1 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).
- Page 2 Figure 3 Closed housing seen from the side Figure 2 Closed housing seen from the side The housing is opened by inserting a screw Never push to the right. The locking hooks driver and pushing left (to the front side). may break and the housing is damaged.
- Page 3 Electrical connections The power supply has to be connected to 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. PLEASE NOTE! The same ground reference has to be used for the unit and for the control system! CF3-W-US...
- 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.
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