Carbon dioxide sensor for duct installation
AIR1-CO
2
K
Installation and Operating Instructions
1
1.0 Important information
In order to ensure correct operation and for your own safety, please read and observe
the following instructions carefully before proceeding. Relevant national standards, safety
regulations and provisions (e.g. DIN EN VDE 0100) as well as the technical connection
conditions of the energy supply company must be observed and applied.
Keep the operating instructions close to the unit for easy reference. After the final assem-
bly, the document must be issued to the operator (tenant/owner).
1.1 Warning and safety instructions
The adjacent symbol is a safety-relevant prominent warning label. All safety re-
gulations and/or symbols must be absolutely adhered to, so that any dangerous
situation is avoided.
1.2 Warranty claims – Exclusion of liability
Our warranty shall not apply if the following instructions are not observed. The same
applies for liability claims against the manufacturer. The use of accessories, which are
not recommended or offered by Helios, is not permitted. Any damage that may occur is
not liable for warranty.
1.3 Regulations – Guidelines
If the product is installed correctly and used to its intended purpose, it conforms to all
applicable regulations and EC guidelines at its date of manufacture.
1.4 Receipt
Please check delivery immediately on receipt for accuracy and damage. If damaged,
please notify the carrier immediately. In case of delayed notification, any possible claim
may be void.
1.5 Storage
When storing for a prolonged time the following steps are to be taken to avoid damaging
influences:
Protection by dry, air- dustproof packing (plastic bags with drying agent and moisture
indicators). The storage place must be water proof, vibration-free and free of excessive
temperature variations (-20 to +60 °C). Damages due to improper transportation, storage
or commissioning are verifiable and not liable for warranty.
1.6 Intended use
The CO
2
sensor is used to measure the CO
2
concentration of the air in the duct. The CO
2
sensor
AIR1-CO
2
K
can be connected to all AIR1 ventilation units (Helios range).
Any use other than the intended use is prohibited!
1.7 Functional description
Measurement principle:
The CO
2
concentration is measured using infrared light.
Automatic calibration:
The carbon dioxide sensor has automatic CO
2
calibration, so manu-
al recalibration is not required during the service life of the transducer.
Supply voltage:
The supply voltage is 24 V AC or 15...35 V DC.
Note
:
24 V DC is available for application with AIR1 units.
Adjustable CO
2
output signal:
The CO
2
output signal is changed from 0...10 V to 4...20 mA
by turning an internal DIP switch in the carbon dioxide sensor. This change does not affect
the CO
2
measurement range.
Note
:
Only 0...10 V can be used for application with AIR1 units.
CHAPTER 1
GENERAL
INFORMATION
m
ATTENTION
m
EN
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