75441329 - Gas detector HAGER - Free user manual and instructions

Product Type	KNX CO₂, Humidity, Temperature Sensor and Controller
Brand	Hager
Model	75441329
KNX Medium	TP (Twisted Pair)
Rated Voltage	DC 21...32 V SELV (via KNX bus)
Current Consumption	Typical 12.5 mA, max 25 mA
CO₂ Measuring Range	0...2000 ppm
Humidity Measuring Range	10...95 % relative humidity
Temperature Measuring Range	-5...+45 °C
Ambient Temperature	-5...+45 °C
Protection Class	III
Binary Inputs	2 inputs for potential-free contacts (e.g., windows, buttons)
Functions	CO₂ limit monitoring, dew point alarm, room temperature control (Comfort, Standby, Night, Frost/heat protection), humidity threshold, logic gates, dimming/shutter control
Installation	In appliance box according to DIN 49073, recommended height 1.5 m
Warm-up Time	Up to 5 minutes after switch-on
Cover Removal	Use screwdriver in bottom slot
Dismantling	Remove design cover and electronics cover during painting

Frequently Asked Questions - 75441329 HAGER

How do I install the Hager 75441329 gas detector?

Installation must be done by an electrically skilled person. Insert the terminal insert into an appliance box (DIN 49073) at approx. 1.5 m height. Connect the KNX bus line to the connection terminal. For binary inputs, connect window contacts or buttons to terminals 4, 5, and 6. Attach the design frame and electronics cover, then fasten with the locking screw. Finally, attach the cover.

What is the warm-up time for the CO₂ sensor?

The CO₂ sensor requires a warm-up period of up to 5 minutes after switch-on before reaching normal operation.

Can I use this device for safety-related gas measurements?

No. The manual explicitly states: 'Do not use for safety-related gas measurements.' It is intended for indoor air quality monitoring and control, not for safety alarms.

How do I remove the cover?

Insert a screwdriver into the slot on the bottom of the device (Figure 4) and carefully raise the cover. Do not damage the cover or design frame.

What should I do during renovation work?

Protect the device against soiling from paint, wallpaper paste, dust, etc. Remove the device from the system and store it in a suitable place. Do not expose it to organic solvents or their vapours.

How do I connect binary inputs?

Binary inputs are connected to terminals 4 (E1), 5 (E2), and 6 (reference potential) on the connecting strip. Use potential-free contacts (e.g., window contacts, push buttons). Cable type J-Y(St)Y 2x2x0.8 mm; max length 5 m.

How do I assign the physical address?

Remove the cover, press the programming button (5). The programming LED illuminates. Then assign the physical address via KNX software. The LED turns off. Record the address on the terminal insert and electronics cover.

What are the operating modes for temperature control?

The device supports Comfort, Standby, Night operation, and Frost/heat protection modes. Setpoint adjustment is done by selecting the operating mode.

Can the device control fans or window drives?

Yes. It outputs measured values as telegrams to the KNX bus, which can be used to control fans or window drives via KNX actuators.

How should I clean the device?

Do not clean with organic solvents. Do not stick adhesive labels. Store away from environments containing softening agents like bubble wrap or polystyrene. The humidity sensor can be permanently impaired by improper cleaning.

USER MANUAL 75441329 HAGER

Assembly Instructions

1 Safety instructions

Electrical equipment may only be installed and fitted by electrically skilled persons.

Failure to observe the instructions may cause damage to the device and result in fire and other hazards.

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

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 CO _2 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 CO _2 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 CO_2 sensor:

• Max of 4 different adjustable threshold values
• Adaptation to current elevation above sea level (a.s.l.)

i After switch-on, the CO_2 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

The 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.

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.

■ Removing the cover (4).
■ Isolate terminal insert (1) from electronic insert (3).
■ Connect the bus line to the connection terminal (9) in the terminal insert.
- Binary inputs: Connect window contacts, NO contact or NC contact button to terminals 4, 5 and 6 of the connecting strip (8) (Figure 3).
- Insert terminal insert (1) in appliance box. Note label OBEN / TOP. The bus connection must be to the right and below.
■ Fit the Design frame (2) on terminal insert (1).
- Insert 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!

■ Fasten the electronics cover with the locking screw (6).
■ Reattach the cover (4)

Figure 2: Terminal insert with connections

(8) Connecting strip binary inputs
(9) KNX connection

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

Line drawing of a screwdriver holding a square component (no text or symbols)

Figure 4: Remove cover

Design cover and electronics cover should be dismantled during painting and decorating work.

■ Insert screwdriver in slot on the bottom (Figure 4) and raise cover (4) carefully.

i Do not damage cover (4) and design frame (2).
■ Slacken screw (6).
■ Remove electronics cover (3) from insert.
During 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.

4.2 Commissioning

Loading the physical address and application software

■ Removing the cover (4).
■ Press the programming button (5).
The programming LED (5) is illuminated.
■ Assign physical address.
The programming LED ceases to be illuminated
■ Record the physical address on the terminal insert and on the back of the electronics cover.

i Observe the correct assignment of inserts and covers when assembling after painting or wallpapering work.

■ Reattach the cover (4).

■ Load 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 typical 12.5 mA

Current consumption KNX max. 25 mA (4 s/15 s as a cycle)

Connection mode KNX 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

CO _2 sensor

Measuring range 0 ... 2000 ppm

Humidity sensors

Measuring range 10 ... 95 % rel. humidity

Temperature sensors

Measuring range -5 ... +45 °C

5.2 Warranty

We reserve the right to make technical and formal changes to the product in the interest of technical progress.

Our products are under guarantee within the scope of the statutory provisions.

If you have a warranty claim, please contact the point of sale or ship the device postage free with a description of the fault to the appropriate regional representative.