4
5. RDU (Remote Display Unit)
The RDU displays the data from the SEU and provides visual and audible indication that the SEU
is in alarm status. The RDU is NOT an external/second sensor. The RDU is connected to the
SEU with a CAT5 cable. A 25-foot CAT5 cable is provided. Users can source additional cable
lengths as needed. The RDU should be placed where it can be conveniently observed (eye level)
before entering the room/space.
The “DIAG” function can test the communication between the SEU and RDU (see 9.1). Resetting
the RAD-0102-6 CO2 Monitor is only available from SEU.
6. Strobes
The RAD-0102-6 can be equipped with strobes for additional visual alarms. Using CAT5 cables,
connect the strobes to the correct RJ45 ports on the SEU and RDU. If CO2 levels exceed AL2,
the strobe will flash. If the CO2 level exceeds AL3, the strobe tempo increases.
Please visit www.CO2Meter.com for strobe package. Part Number: CM-1026.
7. Power
The RAD-1020-6 comes pre-wired with a 12V power supply that plugs in to a wall outlet. The
12V power supply can be removed and 24V DC can be wired directly to the device through the
terminal block. Please use a 24V DC power converter to properly convert your AC power
source.
8. Installation Instructions
Please carefully remove all items from the package and follow the Step-by-Step Installation
Instructions:
1. Choose a suitable location to install the SEU. Fix the panel holder on the wall with the four
screws. Install the SEU 18 inches from floor and close to the CO2 source.
2. Put the SEU on the panel holder, making sure that they are connected tightly.
3. Fix another panel holder in a suitable location outside the monitored space at eye level. Place
the RDU onto panel holder, and stick the warning signs next to RDU.
4. Route the 25-foot CAT5 cable between the SEU and RDU. CAT5 cable can be run through the
wall/conduit or fixed to the wall using cable clips. Plug the CAT5 cable into the designated ports.
Communication between the SEU and RDU is complete.
5. The RAD-0102-6 has 3 relay outputs connected to the programmed alarm settings. All relays
are normally open/closed dry contacts. Any of the relays can be used to control an external
device (fan, HVAC system, etc.) or can be wired to the fire alarm panel directly. The relays will
trigger when the CO2 concentration exceeds the programmed alarm level.
6. When the power has been connected, The SEU and the RDU will begin to work.
7. Please use the “DIAG“ function to verify the communication between SEU and RDU, the five
LED’s will blink and buzzer will sound on SEU & RDU, after that the communication is ready.
The units will display the same information.
