Siemens QAX850 - Mechanical design; Components; Operating elements

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Siemens Master room unit QAX850 CE1N2722en
Building Technologies 28.08.2007
Type summary
Type reference Description Compatible with*
QAX850
Master room unit • Temperature controller RRV851
• Temperature controller RRV852
• Temperature controller RRV856
• Zone room unit QAW850
* Not usable with Desigo RX range of controllers
Product documentation
Document Document number
Data sheet N2722
Mounting instructions M2721
Operating instructions for use with RRV81 B2725en01
Operating instructions for use with RRV82 B2726en01
Operating instructions for use with RRV82 (duo-switch) B2726en03
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:
• Room unit with integrated electronics and operating elements
• Internal temperature sensor
• Base for wall mounting with the connection terminals
• Operator interface buttons (high use)
• Operator interface buttons behind door (low use)
2722P01
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1 LED for heat/cool output status
2 LCD display with EL backlight for control and monitoring of modes,
setpoints, zone conditions etc
3 Operating mode selection – Comfort, energy saving and auto timer
(RRV852 Day/Night zone selection for Duo-zone application)
4 Temporary setpoint and value increase/decrease
5 System off and fan speed control
6 Heat, cool, heat/cool changeover and ventilation only selection
7 Time and weekday setting
8 Auto timer schedule setting
9 Zone output selection (RRV856 and RRV852 for Duo-switch application)
10 Permanent comfort and energy saving setpoints (Day/Night/Both setpoints
for RRV852 Duo-zone application)
11 Button for confirming values and scrolling through parameter sets
Components
Operating elements