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GAMMA instabus

Technical Product Information

February 2019

Weather Station (GPS) AP 257/22

5WG1 257-3AB22

Siemens Switzerland Ltd

DS01

Update: http://www.siemens.de/gamma-td

Building Technologies Division
International Headquarters

 Siemens AG 2019

Theilerstrasse 1a

Subject to change

CH-6300 Zug

4

Figure 4

Mounting
The supplied combined wall / mast holder is fastened to
the rear side of the housing with adhesive tape on
delivery.

Mounting on a wall:
Fasten the holder vertically with the even side to the
wall, with the crescent-shaped bar to the top (see fig. 5).

Figure 5

Mounting on a mast / pole:
Fasten the holder vertically with the curved side to the
mast / pole and the bar to the bottom (see fig. 6).

Figure 6

View of the rear wall and drilling scheme:
Dimensioning of the rear of the enclosure with holder:
see fig. 7,
drilling scheme: see fig. 8.

Figure 7

Figure 8

Preparing the weather station:
The lid of the weather station with the rain sensor is
slotted in on the right and the left at the lower edge.
Remove the lid from the weather station (see fig. 9).

Figure 9

Be careful not to tear open the cable connection be-
tween the circuit board in the bottom part and the rain
sensor in the lid (cable with plug).

Guide the bus connection through the rubber seals at the
bottom part of the weather station and connect the
cable pairs for the voltage supply and the bus to the

Summary of Contents for AP 257/22

Page 1: ... is not lowered completely but only so far that the sun can still shine into the room for a certain distance e g 50 cm which can be set by a parameter This way the occupant of the room can look outside in the lower part of the window and plants on the windowsill can receive sunshine With externally mounted Venetian blinds the sun track ing control of slats can avoid heat influx into the room due t...

Page 2: ...ing approx 1 2 W Voltage supply Bus voltage via the bus line KNX bus current 9 mA Auxiliary power sensor electronics AC 20 V AC 12 28V 50 60 Hz or DC 24 V DC 12 40V max 185 mA at DC 12V residu al ripple 10 max permissible cable length 100 m Power consumption max 2 3 VA Operator elements 1 commissioning button for switching over between normal mode addressing mode Display elements 1 red LED for dis...

Page 3: ...h water could con tinue to drop on to the precipitation sensor even after rain or snow has stopped The weather station should not be shaded by the building or e g trees There must be at least 60 cm free space around the weather station to allow correct wind measurements and to prevent the station from being snowed in It is recommended to install the weather station on a mast It should be en sured ...

Page 4: ...a mast pole Fasten the holder vertically with the curved side to the mast pole and the bar to the bottom see fig 6 Figure 6 View of the rear wall and drilling scheme Dimensioning of the rear of the enclosure with holder see fig 7 drilling scheme see fig 8 Figure 7 Figure 8 Preparing the weather station The lid of the weather station with the rain sensor is slotted in on the right and the left at t...

Page 5: ...ke care that the connections are correctly made A wrong connection can destroy the electronics of the weather station During assembly care should be taken that the tempera ture sensor small circuit board on the lower part of the enclosure is not damaged The cable connection be tween the circuit board and the rain sensor may not be torn off or bent while making the connection The wind measurement v...

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