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Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E
HVAC Products Description of the heating engineer settings 15.07.2002
Only digital peripheral devices can be connected to the controller. Analog devices are
not permitted. The digital devices transmit the controller an identification code in
agreement with the type of device. The type of device can be identified with the help of
the list given below.
82 Room unit QAA 50 (digital)
83 Room unit QAA 70 (digital)
90 Room temperature sensor QAA10 (digital)
102 BMU
• When the LCD displays a PPS address with an identification code, the
communication with the respective device is error-free
• When the LCD displays no PPS address and no identification code, there is no
communication or it is faulty
• Incompatible devices are also displayed, but produce error code 145 (operating line
50)
Identification code
Notes
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