CDD4 Duct Carbon Dioxide Transmitter
Installation Manual
May 27, 2013
4
Setup Menu
The menu has several items shown below. Some items change depending on the hardware configuration and the CO2 sensor.
To enter the menu, press and release the <MENU> key while in normal operation. This will enter the SETUP menu step 1,
pressing <MENU> a second time advances to step 2. Each press of <MENU> advances the menu. No values are saved or
changed by using <MENU>. The <ROLL> key is used to make changes to program variables by scrolling through the
available options. When a value is changed, use the <SAVE> key to save it to memory and advance to the next menu item.
<MENU>
Press and release the <MENU> key to enter the SETUP menu.
If the 2000 ppm CO2 sensor is installed (CDD4A model)
1.
Out High
The default range is 0-2000 ppm. The span can be changed from 1000 to 7500 ppm in increments of
2000 ppm
500. Use the <ROLL> key to change the value and <SAVE> to save. The factory default is 2000 ppm.
If the 20,000 ppm CO2 sensor is installed (CDD4B model)
1.
Out High
The default range is 0-20,000 ppm. The span can be changed from 2000 to 20,000 ppm in increments of
20000ppm
500. Use the <ROLL> key to change the value and <SAVE> to save. The factory default is 20,000 ppm.
<MENU>
2.
Altitude
The default is 0 feet. Change by using the <ROLL> key from 0 to 5000 feet in 500 ft increments. Change
0 Ft
for CO2 local altitude correction and press <SAVE> to save a change.
<MENU>
This item is omitted if the 20,000 ppm dual-channel sensor is installed
3.
Auto Cal
Automatic Cal Mode default is ON to correct CO2 sensor drift to better than
10 ppm per year. Change
ON
with the <ROLL> key and save using <SAVE>. ON is recommended for applications where the CO2
level will be close to normal (400 ppm) at least once per day. If a building is occupied 24 hours and the
CO2 level is fairly constant then this should be set to OFF.
Items 4, 5 and 6 are only available if the Relay Option is installed, otherwise the menu skips directly to step 7.
4.
Relay SP
The relay trip setpoint default is 1000 ppm. It can be changed from 500 to 5000 in 100 ppm increments
1000 ppm
for the 2000 ppm CO sensor or 500 to 15,000 for the 20,000 ppm sensor. Save changes by using the
<SAVE> key.
<MENU>
5.
Relay Hy
The relay hysteresis default is 50 ppm. This can be changed from 25 to 200 in 25 ppm increments for
50 ppm
the 2000 ppm sensor or 25 to 500 ppm for the 20,000 ppm sensor. Use <SAVE> to save any change.
<MENU>
6.
Relay
Use the <ROLL> key to toggle the relay ON or OFF for testing purposes. Press either <SAVE> or
Test OFF
<MENU> to turn the relay off and advance to the next item.
<MENU>
7.
Out Type
For voltage, the factory default output type is 0-5 Vdc. Use the <ROLL> key to change the value to 0-10
0-5 Vdc
Vdc if necessary. Press the <SAVE> key to save. If the switch is set to mA, then 4-20 mA is displayed.
<MENU>
8.
Output
Use the <ROLL> key to toggle the output OFF (normal operation), MIN (minimum output) or MAX
Test OFF
(maximum output) for testing purposes. Press either <SAVE> or <MENU> to set it back to OFF and
advance to the next item.
<MENU>
DISC
ONTINUED
