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KNX 2225WSU-01
Operating Instructions Manual
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Jung KNX 2225WSU-01 Operating Instructions Manual

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Universal weather station
Universal weather station
Art. No. : 2225WSU-01
Operating instructions

1 Safety instructions

2 Device components

Figure 1: View
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Figure 2: Underside view
(1) Sensor head (2) Grub screw for locking (3) Fastening arm (4) Global radiation sensor (5) Precipitation sensor (6) Light and twilight sensors (7) Mounting for fastening arm with bus connection (8) Air humidity sensor (9) Wind speed and wind direction sensor (10) Temperature sensor (11) Guide blade
(only if mounted on a mast) (14) Holes for fastening and strain relief of the connecting cable with cable ties (15) Cable bushing for connecting cable

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 soft ware 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 and evaluation of weather data: wind speed, wind direction, precipitation,
brightness, global radiation, twilight, temperature, relative air humidity, and air pressure  Operation with NEC Class 2 suitable power supply AC/DC 24 V SELV  Installation on the outside of buildings, preferable in the roof and facade area
i The measured values apply to the mounting location. Variations from other weather ser
vices – e.g., due to local turbulence or areas with buildups of air – are possible.
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4 Information for electrically skilled persons

4.1 Mounting and electrical connection

Select mounting location
Figure 3: Minimum distance to surfaces
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Figure 4: Avoid spray water
Figure 5: Maximum load on the fastening arm
Select a mounting location in which the weather station is not influenced by local obstacles or shading, such as surrounding trees, chimneys, awnings, etc. The sensor must be able to detect wind, rain, and ambient brightness without impedance. Avoid slipstream, shadow casting, and light reflection.
Preferred mounting on a freestanding mast. If the device is mounted on house walls, the mea surement of wind and brightness in particular can be distorted.
Do not mount it below or next to building sections from which water can drip onto the device. Select the mounting location so that the weather station will be accessible.
In the case of flat roofs, locate the weather station as close to the center of the roof as possible. Minimum distance to surfaces below the weather station: 1.97 ft (0.6 m)(figure 3). Otherwise,
the sensors on the underside may be damaged by penetrating spray water (figure 4). Direct sunlight, chimneys, or other waste gas or ventilation systems affect the temperature mea
surement. Do not operate in the vicinity of radio transmitter systems. Doing so will compromise the func
tion. i Do not connect more than 3 weather stations in a KNX line.
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Mounting a weather station without a fastening arm on a freestanding mast
Figure 6: Mounting on a freestanding mast without a fastening arm
Use mast with outer diameter <0.98 in (25 mm) and inner diameter >0.75 in (19 mm).
o Mount the enclosed guide blade (11) in the fields provided next to the connection (7). i If mounted on a mast without the guide blade, correct wind direction measurement will not
be possible due to the resulting turbulences.
o Run the connection cable through the mast. o Attach the 7pin plug to the connection (7). Tighten threaded ring with
max. 0.37 lbf.ft (0.5 Nm). o Mount the weather station on the mast and align it. The grub screw (2) must be pointing
north. o Tighten grub screw (2) with max. 0.44 lbf.ft (0.6 Nm).
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Mounting a weather station with a fastening arm on a mast or wall
Figure 7: Mounting with fastening arm
Mount enclosed fastening arm onto a suitable mast or wall. The enclosed hose clamps are suitable for a maximum mast diameter of up to 2.36 in (60 mm).
i When mounting on the supplied fastening arm, do not mount the enclosed guide blade. o Mast mounting: Attach the fastening arm to the mounting mast using the enclosed hose
clamps. o Wall mounting: Attach the fastening arm to the wall through the boreholes using three suit
able screws. o Route the connecting cable along the underside of the fastening arm and guide the 7pin
plug through the open pipe socket at the end of the fastening arm.
o Fit the cable ties for strain relief (14). o Attach the 7pin plug to the connection (7). Tighten the threaded ring with max.
0.37 lbf.ft (0.5 Nm).
o Mount the weather station on the fastening arm and align it. The grub screw must be point
ing north.
o Tighten the grub screw with max. 0.44 lbf.ft (0.6 Nm). o Route the connecting cable through the cable bushing (15) into an installation pipe.
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Figure 8: Fastening arm – dimensions for boreholes
Mounting and connecting the device
i Use only cables which are approved for KNX. o Connect the bus line and external power supply to the connecting cable.
red KNX+
Black KNX–
orange AC/DC 24 V ~/+
brown AC/DC 24 V ~/+
i The sensor head is translucent. Therefore, do not stick anything or write on the sensor
head.
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Align the device
Figure 9: Orienting the weather station
o Align the sensor head in the appropriate direction or – depending on the detailed onsite
circumstances – according to the alignment of the facade (figure 9).

4.2 Commissioning

Commissioning the device
Figure 10: Position of the programming LED and reed contact
o Switch on the bus voltage. o Switch on supply voltage. o Hold the supplied programming magnet by the integrated reed contact (12).
The programming LED (13) indicates the programming state blue.
o Programming the physical address and application program o Note the physical address on adhesive labels on the underside.
The device is ready for operation.
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5 Appendix

Disposal
Please consider your local regulation for disposal and electronic waste recycling.

5.1 Technical data

Supply Rated voltage AC/DC24 V SELV
(± 10%)
Current consumption 100 ... 400 mA
(dependent on the weather)
Protection class III Connecting cable
Cable type LiYCY 4xAWG26 Cable length 16.4 ft (5 m) Total length per line 49.2 ft (15 m) Number of weather stations max. 3 (per line)
KNX KNX medium TP Commissioning mode S-mode Rated voltage KNX DC 21 ... 30V SELV Current consumption KNX max. 5mA
Ambient conditions Housing
Dimensions Ø×H 5.12x2.68 in
(130x68 mm)
Weight ca. 8.11 oz (230 g) Wind direction sensor
Measuring range 1 ... 360° Resolution 1° Accuracy ± 10°
Wind speed sensor Resolution 0.3 ft/s (0.1 m/s) Accuracy (≤ 10 m/s) ± 3.3 ft/s (± 1 m/s) Accuracy (>10 m/s) ± 5%
i Accuracy as RMS average value over 360°. Temperature sensor
Measuring range -22 ... +140°F
(-30 ... +60 °C)
Resolution 0.1 K Accuracy ± 1 K (Wind > 6.56 ft/s
(2 m/s), for 23 ... 77°F
(-5 ... +25 °C))
Precipitation sensor Measuring range yes/no Accuracy Fine drizzle
Brightness sensors Number 4 Measuring range approx. 0 ... 13.9 kfc
(0 ... 150 klx)
Resolution 93 fc (1 klx) Accuracy ± 3% Spectral range 475 ... 650nm
Twilight sensor Measuring range approx. 0 ... 83 fc (0 ... 900 lx) Resolution 0.1 fc (1 lx) Accuracy ± 1 fc (± 10 lx)
Air pressure sensor
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Measuring range 4.35 ... 15.95 psi
(300 ... 1100 hPa)
Resolution 0.00015 psi (0,01 hPa) Accuracy ± 0.007 psi (± 0,5 hPa) at 68 °F (20 °C)
Humidity sensor Measuring range 0 ... 100% rel. humidity Resolution 0.1% rel. humidity Accuracy ± 10 % rel. humidity at 68 °F (20 °C) abs. humidity 0 ... 0.4 oz/ft³
(0 ... 400 g/m³)
Resolution 0.00001 oz/ft³ (0,01 g/m³) Global radiation
Measuring range 0 ... 120 W/ft²
(0 ... 1300 W/ft²)
Resolution 0.1 W/ft² (1 W/m²) Accuracy ± 10% Spectral range 350 ... 1100 nm Purpose of control Sensing Control Construction of control Independently Mounted Control for Surface
Mounting
Pollution Degree PD 2 Impulse Voltage 330V
i All accuracy specifications relate to the respective measuring range end value.

5.2 Warranty

If you have any questions about this product, contact:
Jung USA, Inc.
350 Fifth Avenue, Suite 5220 New York, NY 10118 Phone: +1 800.311.6135 Email: sales@jungcontrols.com www.jungcontrols.com
For the product warranty, please refer to the attached document.
All rights reserved
© ALBRECHT JUNG GMBH & CO. KG
Volmestraße 1 58579 Schalksmühle GERMANY
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