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QAX850 Master room unit for RRV… controllers Multifunctional, digital room unit for installer and end-user interface with RRV… controllers. 2 wire bus connection Room unit in combination with an RRV… controller for HVAC plants in: • Residential apartments • Residential single house •...
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Operating instructions for use with RRV86 B2727en01 Declaration of conformity T2722 Mechanical design The QAX850 is the installer/OEM/end-user master MMI for RRV controllers. The unit consists of the following components: Components • Room unit with integrated electronics and operating elements • Internal temperature sensor •...
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Fan speed indication (low, medium and high) Auto fan mode Commissioning notes When powering up, the QAX850 will display all LCD icons for approximately 3 seconds Response on start-up and then the software version number for another 3 seconds. It will then revert to normal display.
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QAX850 internal sensor can be replaced by connecting an external NTC resistor Internal sensor sensor (QAA32 or QAH11) to the RRV controller B1 input. In this case the QAX850 automatically recognizes and displays the external sensor value. Mounting and installation notes...
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The QAX850 must be mounted on a flat surface and in compliance with local regulations. Local installation regulations must be observed. The room unit is not protected against connection to AC 230 V!
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• When using the products, all requirements specified under ”Technical data” must be observed. • Local regulations for electrical installations must be complied with. Connection diagram QAX850 master room unit RRV… controller Siemens Master room unit QAX850 CE1N2722en Building Technologies 28.08.2007...