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Siemens QAX850 Manual
Siemens QAX850 Manual

Siemens QAX850 Manual

Master room unit for rrv controllers

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Use
Use
Application
Functions
Primary functions
Operator functions
CE1N2722en
28.08.2007
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
• Autonomous light commercial applications
For use with RRV... controllers in air based plants including heating, cooling and
ventilation (HVAC) equipment. Suitable for Standard, Duo-zone, Duo-switch and Multi-
zone applications.
• Remote control and monitoring of an RRV... controller
• Parameter adjustments by installer
• Room temperature measurement
• Time clock operation
• Comfort temperature setpoint adjustment
• Energy saving temperature setpoints adjustment
• Auto timer selection
• Fan speed selection
• Zone selection and settings (only for RRV controllers with zone outputs)
• Display of operating mode, temperature, time, fan speed and zone values.
2
QAX850
Building Technologies
HVAC Products
722

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Summary of Contents for Siemens QAX850

  • Page 1 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 •...
  • Page 2 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 •...
  • Page 3 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.
  • Page 4 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...
  • Page 5 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!
  • Page 6 • 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...
  • Page 7 Dimensions Room unit 23,8 Base 89,45 Dimensions in mm ©2005 Siemens Switzerland Ltd HVAC Products Siemens Master room unit QAX850 CE1N2722en Building Technologies 28.08.2007...