Instruction Manual

C7110A1010 ROOM AIR QUALITY SENSOR
3 EN0B-0644GE51 R1109A
68
60
86
100
104
97
99 30
TAB TO
RELEASE
PCB
Y24V~24V
OUTPUT
V
OLTA GE
OFFSET
Fig. 3. Dimensions and mounting holes (mm)
IMPORTANT
Screw-type terminal blocks are designed to accept
no more than one 16 AWG (1.5 mm
2
) conductor.
3. After re-inserting the printed circuit board and the
perforated plate, connect the wires to the terminal
block as follows:
a) Strip 3/16 in. (5 mm) of insulation from the
conductor.
b) Insert the wire in the required terminal location
(see Fig. 5) and tighten the screw to complete
the termination.
4. Adjust the trimming potentiometer (see section
“Adjusting the Offset Signal”).
5. Remount the cover as shown in Fig. 4 and make sure
that the tab on the underside engages.
6. The sensor is now operational. When the air quality
deteriorates, the voltage of the output signal will rise.
1
2
Fig. 4. Cover assembly
Adjusting the Offset Signal
After mounting the device, the output signal should be
adjusted in accordance with expected ambient conditions and
individual preferences.
The output signal is adjusted using the trimming potentio-
meter located on the sensor board (see Fig. 5).
Y24V~24V
OUTPUT
VOLTAGE
OFFSET
TRIMMING
POTENTIOMETER
OFFSET
STATUS LED
SENSOR
(Do not touch!)
Y 24V 24V~
Fig. 5. Wiring Connection and Trimming Potentiometer
The offset of the output signal is increased or lowered by
means of this potentiometer. The yellow status LED (see Fig.
5) indicates the corresponding signal strength:
 Turning the trimming potentiometer clockwise (CW)
decreases the output signal (minimum brightness is
reached at an output signal of 1.5 V)
 Turning the trimming potentiometer counterclockwise
(CCW) increases the output signal (maximum brightness
is reached at an output signal of 9 V).