Gira 2104 User manual

CO2-Sensor with humidity and room temperature controller
Order No. : 2104 ..
Operating instructions
1 Safety instructions
Electrical devices may only be mounted and connected by electrically skilled
persons.
Serious injuries, fire or property damage possible. Please read and follow manual fully.
Do not use for safety-related gas measurements.
During renovation work, protect the device against soiling through paint, wallpaper
paste, dust, etc. Device can be damaged.
Only operate the device with cover. Device fault possible due to electrostatic discharge.
Do not clean or store the device with organic solvents or expose it to their vapours. Do
not stick any adhesive labels. Do not store device in packaging or environments that
contain softening agents, e.g. bubble wrap or polystyrene. Before starting renovation
work, remove the device from the system and store it in a suitable place. The function of
the humidity sensor may be permanently impaired.
Danger of electric shock on the KNX installation. Do not connect any external voltage to
the inputs. Doing so may damage the device(s), and the SELV potential on the KNX bus
line will no longer be available.
These instructions are an integral part of the product, and must remain with the end
customer.
2 Device components
Figure 1: Device overview
(1) Terminal insert
(2) Design frame
(3) Electronics cover
(4) Cover
(5) Programming button and LEDs
(6) Locking screw (plastic)
(7) Sensor window CO2 sensor
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3 Function
System information
This device is a product of the KNX system and complies with the KNX directives. Detailed
technical knowledge obtained in KNX training courses is a prerequisite to proper understanding.
The function of this device depends upon the software. Detailed information on loadable
software and attainable functionality as well as the software itself can be obtained from the
manufacturer´s product database. Planning, installation and commissioning of the device are
carried out with the aid of KNX-certified software. The latest versions of product database and
the technical descriptions are available on our website.
Intended use
- Measurement of CO2 concentration, relative air humidity and air temperature
- Output of the measured values as telegram to the bus, e.g. for controlling fans or window
drives via KNX telegrams
- Single-room temperature control in KNX installations
- Installation in appliance box according to DIN 49073
Product characteristics
- Limit value monitoring for CO2 concentration and air humidity
- Dew point alarm for, for example, cooling blankets and conservatories, to avoid possible
mould formation
- Two binary inputs for connection of potential-free contacts e.g. buttons, switches, window
contacts
- Logic gates for simple gating functions
Function CO2 sensor:
- Max of 4 different adjustable threshold values
- Adaptation to current elevation above sea level (a.s.l.)
iAfter switch-on, the CO2 sensor requires a warm-up period of up to 5 minutes, until normal
operation is reached.
Function Room temperature controller:
- Measurement of room temperature and comparison with setpoint temperature
- Setpoint setting by selection of the operating mode
- Operating modes Comfort, Standby, Night operation, Frost/heat protection
- Heating and cooling mode with basic and auxiliary level
Function of humidity sensor:
- Max of 2 adjustable threshold values
iThe device contains a sensitive, integrated humidity/temperature sensor. Longer storage at
a higher or lower temperature or humidity leads to inaccuracies of the humidity reading.
This difference is rectified again after a few days in operation.
Function Binary inputs:
- Functions: dimming, shutter control, light scene extension unit, brightness or temperature
value transmitter.
- Inputs lockable in operation
4 Information for electrically skilled persons
4.1 Fitting and electrical connection
DANGER!
Electrical shock on contact with live parts in the installation environment.
Electrical shocks can be fatal.
Before working on the device, disconnect the power supply and cover up live
parts in the working environment.
Mounting and connecting the device
Do not use the device in multiple combinations with electrical devices. Their heat generation
influences the temperature and humidity reading of the controller.
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CO2-Sensor with humidity and room temperature controller

Do not mount the device near sources of interference such as electric cookers, refrigerators,
draughts or direct sunlight. This influences the temperature and humidity reading of the
controller.
Observe routing conditions for SELV.
Do not route input cables parallel to mains cables. Otherwise there might be EMC interference.
Recommendation: Use deep accessory sockets.
The optimum installation height is approx. 1.5 m.
oRemoving the cover (4).
oIsolate terminal insert (1) from electronic insert (3).
oConnect the bus line to the connection terminal (9) in the terminal insert.
oBinary inputs: Connect window contacts, NO contact or NC contact button to terminals 4, 5
and 6 of the connecting strip (8) (Figure 3).
oInsert terminal insert (1) in appliance box. Note label OBEN / TOP. The bus connection
must be to the right and below.
oFit the Design frame (2) on terminal insert (1).
oInsert the electronics cover (3) into the terminal insert in the correct orientation.
DANGER!
When mounting with 230 V devices under a common cover, e.g. socket outlets,
there is a danger of electrical shocks in the event of a fault!
Electrical shocks can be fatal.
Only use the preassembled plastic screw as locking screw!
oFasten the electronics cover with the locking screw (6).
oReattach the cover (4)
Figure 2: Terminal insert with connections
(8) Connecting strip binary inputs
(9) KNX connection
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CO2-Sensor with humidity and room temperature controller

Figure 3: Connection of binary inputs
1..3 Not assigned
4 Connection binary input E1
5 Connection binary input E2
6 Reference potential E1, E2
Dismantling the device
Figure 4: Remove cover
Design cover and electronics cover should be dismantled during painting and decorating work.
oInsert screwdriver in slot on the bottom (Figure 4) and raise cover (4) carefully.
iDo not damage cover (4) and design frame (2).
oSlacken screw (6).
oRemove electronics cover (3) from insert.
iDuring later assembly, the cover must be placed on the correct insert again. Already pay
attention to correct labelling of insert and cover during disassembly, label accordingly now
if necessary.
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CO2-Sensor with humidity and room temperature controller

4.2 Commissioning
Loading the physical address and application software
oRemoving the cover (4).
oPress the programming button (5).
The programming LED (5) is illuminated.
oAssign physical address.
The programming LED ceases to be illuminated
oRecord the physical address on the terminal insert and on the back of the electronics
cover.
iObserve the correct assignment of inserts and covers when assembling after painting or
wallpapering work.
oReattach the cover (4).
oLoad application software, parameters, etc.
5 Appendix
5.1 Technical data
KNX
KNX medium TP
Commissioning mode S-mode
Rated voltage KNX DC 21 ... 32VSELV
Current consumption KNX typ. 12.5mA
Current consumption KNX max. 25mA (4 s/15 s as a cycle)
Connection mode KNX device connection terminal
Ambient conditions
Protection class III
Ambient temperature -5 ... +45°C
Binary inputs
Cable length max. 5m
Cable type J-Y(St)Y 2 x 2 x 0.8 mm
CO2 sensor
Measuring range 0 ... 2000ppm
Humidity sensors
Measuring range 10 ... 95% rel. humidity
Temperature sensors
Measuring range -5 ... +45°C
5.2 Warranty
The warranty follows about the specialty store in between the legal framework as provided for
by law
Please submit or send faulty devices postage paid together with an error description to your
responsible salesperson (specialist trade/installation company/electrical specialist trade). They
will forward the devices to the Gira Service Center.
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CO2-Sensor with humidity and room temperature controller

Gira
Giersiepen GmbH & Co. KG
Elektro-Installations-
Systeme
Industriegebiet Mermbach
Dahlienstraße
42477 Radevormwald
Postfach 12 20
42461 Radevormwald
Deutschland
Tel [phone] - 602-0
Fax [phone] - 602-191
www.gira.de
[email protected]
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CO2-Sensor with humidity and room temperature controller