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.