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Siemens Switzerland Ltd  User manual RVS61.843 CE1U2355en_02 
HVAC Products  3 Mounting and installation  23. November 2007 
3.7  Room unit QAA75… 
 
Engineering 
 
min. 
10 cm
2261Z03
 
The room unit should be located in the main living room while giving consideration to 
the following criteria: 
•  The place of installation should be chosen so that the sensor can capture the room 
temperature as accurately as possible without getting adversely affected by direct 
solar radiation or other heat or refrigeration sources (about 1.5 meters above the 
floor) 
•  In the case of wall mounting, there must be sufficient clearance above the unit, 
enabling it to be fitted and removed 
 
When the unit is removed from its base, power is disconnected so that the unit is out of 
operation. 
 
 
 
 
 
 
 
 
 
Terminal Identifier  QAA75.610  QAA75.611 
1  CL+  BSB data   BSB data  
2 CL-  BSB ground  BSB ground 
3  G+  Reserved  Power supply DC 12 V  
 
 
Mounting method 
Connections 
2359Z25
2359Z20
2359Z26
2359Z24
2359Z21