Busch-Jaeger 1091 U User manual

2CKA001473B8822 │ 25.10.2016
Operating Instructions
CO2-sensor
1091 U

Table of contents
Operating Instructions 2CKA001473B8822 │2
Table of conten ts
1Notes on the instruction manual ................................................................................................................................. 4
2Safety.......................................................................................................................................................................... 5
2.1 Information and symbols used........................................................................................................................ 5
2.2 Intended use................................................................................................................................................... 6
2.3 Improper use .................................................................................................................................................. 6
2.4 Target group / Qualifications of personnel...................................................................................................... 7
2.4.1 Operation ....................................................................................................................................................... 7
2.4.2 Installation, commissioning and maintenance ............................................................................................... 7
2.5 Safety instructions .......................................................................................................................................... 8
3Information on protection of the environment ............................................................................................................. 9
3.1 Environment ................................................................................................................................................... 9
4Setup and function.................................................................................................................................................... 10
4.1 Functions...................................................................................................................................................... 10
4.2 Sources of interference ................................................................................................................................ 10
4.3 Possible combinations.................................................................................................................................. 11
5Technical data........................................................................................................................................................... 12
5.1 Technical data .............................................................................................................................................. 12
5.2 Factory settings ............................................................................................................................................ 13
6Connection, installation / mounting ........................................................................................................................... 14
6.1 Requirements for the electrician................................................................................................................... 14
6.2 Mounting....................................................................................................................................................... 15
6.3 Electrical connection..................................................................................................................................... 17
7Commissioning ......................................................................................................................................................... 18
8Operation .................................................................................................................................................................. 20
8.1 Operating modes.......................................................................................................................................... 20
8.2 Normal operation.......................................................................................................................................... 21
8.2.1 Display ......................................................................................................................................................... 21
8.2.2 Messages..................................................................................................................................................... 21
8.2.3 Button lock ................................................................................................................................................... 24
8.3 Extended operation ...................................................................................................................................... 26
8.3.1 Change into extended operation.................................................................................................................. 26
8.3.2 Display ......................................................................................................................................................... 26
8.3.3 Button assignment ....................................................................................................................................... 26
8.3.4 Menu "Threshold values / switch-off delay" for the ventilation control......................................................... 27
8.3.5 Menu "Fan control / window control" ........................................................................................................... 29
8.3.6 Menu "Display lighting" ................................................................................................................................ 30
8.3.7 Menu "Temperature correcting value" ......................................................................................................... 31
8.3.8 Menu "CO2correcting value" ....................................................................................................................... 32
8.3.9 Menu "Load current" .................................................................................................................................... 33
8.3.10 Menu "Manual operation"............................................................................................................................. 34
8.3.11 RESET (resetting the device) ...................................................................................................................... 35
8.4 Operation manual mode............................................................................................................................... 36

Table of contents
Operating Instructions 2CKA001473B8822 │3
9Maintenance ............................................................................................................................................................. 37
9.1 Cleaning ....................................................................................................................................................... 37
10 Information about planning and application .............................................................................................................. 38
10.1 Menu tree ..................................................................................................................................................... 38
11 Index ......................................................................................................................................................................... 39

Notes on the instruction manual
Operating Instructions 2CKA001473B8822 │4
1 Notes on the instruction manual
Please read through this manual carefully and observe the information it contains. This will
assist you in preventing injuries and damage to property, and ensure both reliable operation and
a long service life for the device.
Please keep this manual in a safe place.
If you pass the device on, also pass on this manual along with it.
Busch-Jaeger accepts no liability for any failure to observe the instructions in this manual.
If you require additional information or have questions about the device, please contact Busch-
Jaeger or visit our Internet site at:
www.BUSCH-JAEGER.de

Safety
Operating Instructions 2CKA001473B8822 │5
2 Safety
The device has been constructed according to the latest valid regulations governing technology
and is operationally reliable. It has been tested and left the factory in a technically safe and
reliable state.
However, residual hazards remain. Read and adhere to the safety instructions to prevent
hazards of this kind.
Busch-Jaeger accepts no liability for any failure to observe the safety instructions.
2.1 Information and symbols used
The following Instructions point to particular hazards involved in the use of the device or provide
practical instructions:
Danger
Risk of death / serious damage to health
– The respective warning symbol in connection with the signal word "Danger"
indicates an imminently threatening danger which leads to death or serious
(irreversible) injuries.
Warning
Serious damage to health
– The respective warning symbol in connection with the signal word "Warning"
indicates a threatening danger which can lead to death or serious
(irreversible) injuries.
Caution
Damage to health
- The respective warning symbol in connection with the signal word "Caution"
indicates a danger which can lead to minor (reversible) injuries.
Attention
Damage to property
– This symbol in connection with the signal word "Attention" indicates a
situation which could cause damage to the product itself or to objects in its
surroundings.
NOTE
This symbol in connection with the word "Note" indicates useful tips and
recommendations for the efficient handling of the product.
This symbol alerts to electric voltage.

Safety
Operating Instructions 2CKA001473B8822 │6
2.2 Intended use
This device is a CO2 monitoring device for flush-mounted installation.
During an increase in the CO2 level or concentration of relative humidity, the control of the
device can be used to control the ventilation with a fan or a window.
The device is intended for the following:
■ Operation according to the listed technical data,
■ Installation in dry interior rooms and suitable flush-mounted boxes,
■ Use with the connecting options available on the device.
The intended use also includes adherence to all specifications in this manual.
2.3 Improper use
Each use not listed in Chapter 2.2 “Intended use“ on page 6 is deemed improper use and can
lead to personal injury and damage to property.
Busch-Jaeger is not liable for damages caused by use deemed contrary to the intended use of
the device. The associated risk is borne exclusively by the user/operator.
The device is not intended for the following:
■ Unauthorized structural changes
■ Repairs
■ Outdoor use
■ The use in bathroom areas
■ The control of the device serves for monitoring and regulating the quality of the air. It must
not be used for safety-related tasks.

Safety
Operating Instructions 2CKA001473B8822 │7
2.4 Target group / Qualifications of personnel
2.4.1 Operation
No special qualifications are needed to operate the device.
2.4.2 Installation, commissioning and maintenance
Installation, commissioning and maintenance of the device must only be carried out by trained
and properly qualified electrical installers.
The electrical installer must have read and understood the manual and follow the instructions
provided.
The electrical installer must adhere to the valid national regulations in his/her country governing
the installation, functional test, repair and maintenance of electrical products.
The electrical installer must be familiar with and correctly apply the "five safety rules" (DIN VDE
0105, EN 50110):
1. Disconnect
2. Secure against being re-connected
3. Ensure there is no voltage
4. Connect to earth and short-circuit
5. Cover or barricade adjacent live parts

Safety
Operating Instructions 2CKA001473B8822 │8
2.5 Safety instructions
Danger - Electric voltage!
Electric voltage! Risk of death and fire due to electric voltage of 230 V.
Dangerous currents flow through the body when coming into direct or indirect
contact with live components. This can result in electric shock, burns or even
death.
■ Work on the 230 V supply system may only be performed by authorised and
qualified electricians.
■ Disconnect the mains power supply before installation / disassembly.
■ Never use the device with damaged connecting cables.
■ Do not open covers firmly bolted to the housing of the device.
■ Use the device only in a technically faultless state.
■ Do not make changes to or perform repairs on the device, on its components
or its accessories.
■ Keep the device away from water and wet surroundings.
Caution! - Risk of damaging the device due to external factors!
Moisture and contamination can damage the device.
■ Protect the device against humidity, dirt and damage during transport,
storage and operation.

Information on protection of the environment
Operating Instructions 2CKA001473B8822 │9
3 Information on protection of the environment
3.1 Environment
Consider the protection of the environment!
Used electric and electronic devices must not be disposed of with domestic
waste.
– The device contains valuable raw materials which can be recycled.
Therefore, dispose of the device at the appropriate collecting depot.
All packaging materials and devices bear the markings and test seals for proper disposal.
Always dispose of the packaging material and electric devices and their components via the
authorized collecting depots and disposal companies.
The products meet the legal requirements, in particular the laws governing electronic and
electrical devices and the REACH ordinance.
(EU Directive 2012/19/EU WEEE and 2011/65/EU RoHS)
(EU REACH ordinance and law for the implementation of the ordinance (EC) No.1907/2006).

Setup and function
Operating Instructions 2CKA001473B8822 │10
4 Setup and function
4.1 Functions
The device is a functional measuring device and is installed flush-mounted in the wall. Next to
monitoring of the air quality it also offers the option of controlling a room ventilation via a fan or
a a window.
The device measures the following values:
■ CO
2 content of the air
■ Relative humidity of the room
■ Temperature
■ Air pressure (absolute)
4.2 Sources of interference
The measured results of the device can be influenced negatively by external sources. The
following contains possible sources of interference:
■ Draught and movement of air.
– E.g. from windows, doors, convection, heating or persons.
■ Heating up or cooling down.
– E.g. solar irradiation or mounting on an outside wall.
■ Heat sources
– In the direct vicinity of installed electric loads, e.g. dimmers
■ Shocks or impacts the device was or is being subjected to.
■ Contamination from paint, wallpaper adhesive, dust, etc.
– E.g. during renovation work
■ Organic solutions or their vapours.
– E.g. cleaning agents.
■ Softening agents from stick-on labels and packaging.
– E.g. air-cushion foil or polystyrene
Constant deviations of the measured values can be corrected in the control, see chapter 8.3.8
“Menu "CO2 correcting value"“ on page 32 and see chapter 8.3.7 “Menu "Temperature
correcting value"“ on page 31. Constant deviations of the measured values are caused by
permanently existing sources of interference.

Setup and function
Operating Instructions 2CKA001473B8822 │11
4.3 Possible combinations
1091 U
6435-xxx X
Table 1: Possible combinations

Technical data
Operating Instructions 2CKA001473B8822 │12
5 Technical data
5.1 Technical data
Designation Value
Nominal voltage: 230 V AC, ±10%, 50 Hz
Temperature range: 0°C - +35°C
Storage temperature: -10°C - +60°C
Protection type: IP 20
Display size: 3.8 cm (1.5")
Dimensions of power adapter: 44 x 44 x 32 mm
(for BS flush-mounted box without claws)
Outputs: 2 floating relays with a common connection for the
switching voltage
Switching capacity:
(each for both relays)
6 A / 230 V AC cos ⱷ 1
Setting values
■ Carbon dioxide (10 ppm dissolution):
■ Relative humidity (1% dissolution)
800 ppm … 1500 ppm
40 % … 95 %
Display values
■ Carbon dioxide:
■ Relative humidity:
■ Temperature:
■ Air pressure:
500 ppm … 2000 ppm
20 % … 99 %
0 °C … 35 °C
300 hPa … 1100 hPa
Mode of operation
(DIN EN 60730-1)
1C
Degree of contamination
(DIN EN 60730-1)
2
Rated surge voltage
(DIN EN 60730-1)
4000 V
Table 2: Technical data

Technical data
Operating Instructions 2CKA001473B8822 │13
5.2 Factory settings
Factory settings Value
CO2 threshold value 800 ppm
rF (RH = relative humidity) threshold value 60 %
Switch-off delay 3 minutes
Control Fan
Display illumination Automatic mode
Temperature offset (temperature correcting value) 0°C
CO2 offset (CO2 correcting value) 0 ppm
Load current 1 ampere
Manual operation ON
Table 3: Factory settings

Connection, installation / mounting
Operating Instructions 2CKA001473B8822 │14
6 Connection, installation / mounting
Danger - Electric voltage!
Risk of death due to electrical voltage of 230 V during short-circuit in the low-
voltage conduit.
– Low-voltage and 230 V conduits must not be installed together in a flush-
mounted box!
6.1 Requirements for the electrician
Danger - Electric voltage!
Install the device only if you have the necessary electrical engineering
knowledge and experience.
■ Incorrect installation endangers your life and that of the user of the electrical
system.
■ Incorrect installation can cause serious damage to property, e.g. due to fire.
The minimum necessary expert knowledge and requirements for the installation
are as follows:
■ Apply the "five safety rules" (DIN VDE 0105, EN 50110):
1. Disconnect
2. Secure against being re-connected
3. Ensure there is no voltage
4. Connect to earth and short-circuit
5. Cover or barricade adjacent live parts.
■ Use suitable personal protective clothing.
■ Use only suitable tools and measuring devices.
■ Check the type of supply network (TN system, IT system, TT system) to
secure the following power supply conditions (classic connection to ground,
protective earthing, necessary additional measures, etc.).

Connection, installation / mounting
Operating Instructions 2CKA001473B8822 │15
6.2 Mounting
Caution! The device can sustain damage when coming into contact with
hard objects!
The plastic parts of the device are sensitive.
– Pull the attachment off only with your hands.
– Do not lever parts off with screwdrivers or similar hard objects.
The flush-mounted insert must only be installed in flush-mounted wall boxes according to DIN
49073-1, Part 1, or suitable surface-mounted housings.
– If the device is already mounted or
assembled, pull off the attachment
from the flush-mounted insert with
the aid of the cover frame.
Fig. 1: Wall mounting: pulling off the attachment
To install the device, perform the following steps:
– If the state of the device is at the
point of delivery, pull off the
attachment from the flush-mounted
insert with your hands.
– Pull the attachment off only with your
hands!
– Do not lever parts off with
screwdrivers or similar hard objects.
This damages the device.
– When pulling off, first the resistance
of the spring clamps must be
overcome.
Fig. 2: State of the device at the point of delivery:
pulling off the attachment

Connection, installation / mounting
Operating Instructions 2CKA001473B8822 │16
1. Connect the cables to the flush-
mounted insert.
– For the connection assignment,
see chapter 6.3 “Electrical
connection“ on page 17.
Fig. 3: Connecting the cables
2. Mount the flush-mounted insert.
Fig. 4: Mounting the flush-mounted insert
3. Plug the attachment together with the
cover frame onto the flush-mounted
insert.
– Ensure that the plug-in
connection on the rear side does
not get jammed.
– If mounting is difficult, check
whether a burr has formed at the
lock-in opening of the flush-
mounted insert and remove it.
The device is now mounted.
Fig. 5: Mounting the display

Connection, installation / mounting
Operating Instructions 2CKA001473B8822 │17
6.3 Electrical connection
Window control:
[1] Open
[2] Close
Fan control:
[1] Level 1
[2] Level 2
Fig. 6: Control for 230 V
Window control:
[1] Open
[2] Close
Fan control:
[1] Level 1
[2] Level 2
Fig. 7: Control for 24 V
NOTE
■ The relays are locked against each other on the software side. The reverse
time amounts to at least 500 ms.
■ If values that lie below the threshold value are measured after a mains
failure, the control switches the window to closed. This ensures that the
window is closed.

Commissioning
Operating Instructions 2CKA001473B8822 │18
7 Commissioning
The setup is carried out automatically during initial commissioning or when resetting the settings
(RESET).
All settings, except for the language, can be made in the settings menu at a later point in time. If
certain functions are not relevant for you, confirm the preset values with the "OK" button to
switch to the next menu item.
After initial commissioning has been carried out, the device automatically performs a calibration.
Carry out the device settings in the following order.
Language
The language is set once during initial
commissioning or after a reset. A change
is no longer possible during standard
operation. During a later reset all entered
data are deleted and must then be
entered anew.
During initial commissioning or after a
reset the device automatically switches
to menu "Language".
1. Use the "UP / DOWN" buttons to
select a language.
2. Confirm the selection with the "OK"
button.
– The device automatically
switches to the next menu.
Fig. 8: Setup menu "Language"

Commissioning
Operating Instructions 2CKA001473B8822 │19
Control, see chapter 8.3.5 “Menu "Fan
control / window control"“ on page 29
■ Select between fan control and
window control.
Fig. 9: Setup menu "Control"
CO2 threshold value, see chapter 8.3.4
“Menu "Threshold values / switch-off
delay" for the ventilation control “ on
page 27
Fig. 10: Setup menu "CO2threshold value"
Threshold value of relative humidity, see
chapter 8.3.4 “Menu "Threshold values /
switch-off delay" for the ventilation
control “ on page 27
Fig. 11: Setup menu "Threshold value of relative
humidity"
Switch-off delay, see chapter 8.3.4
“Menu "Threshold values / switch-off
delay" for the ventilation control “ on
page 27
Fig. 12: Setup menu "Switch-off delay"

Operation
Operating Instructions 2CKA001473B8822 │20
8 Operation
8.1 Operating modes
The device has three operating modes.
Standard operation, see chapter 8.2
“Normal operation“ on page 21
■ All functions run automatically.
Manual operation is not required.
Fig. 13: Standard operation
Settings, see chapter 8.3 “Extended
operation“ on page 26
■ E.g. setting the threshold value.
Fig. 14: Settings / setup
Manual mode, see chapter 8.4 “Operation
manual mode“ on page 36
■ E.g. switching the ventilation
manually.
Fig. : Manual mode