User Manual

14-11
Home automation system
Synco™ living
Central apartment unit QAX9..
Siemens Switzerland Ltd
Building Technologies Division
2019www.siemens.com/gamma
14
Stock No. Product No. DT
S55621-H125 QAX903-9 A
Manuals in several languages are available for download as PDF les from www.siemens.com/syncoliving-td
QAX903-9Central apartment unit for HVAC and energy consumption data collection
The central apartment unit serves as an operator and display unit for an apartment. It manages indivi-
dual room control (heating/cooling) of up to 12 rooms, comfort ventilation, precontrol, control of air
conditioning equipment, and acquires the consumption data of heat, water, electricity and gas.
• Management of heating and cooling control for one apartment
- Suited for heating and cooling plants with central distribution (e.g. underoor heating) and radiators
with decentral connections
- Selection of operating mode, timer and holidays / special day function for the apartment
- Independent time switches and operating modes for 12 rooms
- Flow temperature control of 2 independent room groups including limitation (min. / max.) and main-
tained return temperature (high / low)
- Increase of economy room temperature setpoint and minimum ow temperature setpoint depending
on the composite outside temperature
- Collection of heat / cooling requests from the individual rooms and forwarding the requests to the
heat/cooling sources via wired bus, heat/cooling demand relay or DC 0...10 V output to the RRV912 or
RRV934
• Absence function (heating, cooling, ventilation)
• Management of 3-stage ventilation plant via RRV934 multicontroller, incl. night cooling
• Control of air conditioners (split units) via universal outputs (locally and RRV91x) or via S-Mode
(KNX TP)
• Collection of meter data (heat / cool, electricity, water, gas) to support automated meter reading &
billing
• Display of meteorological data
• Presentation of key data on info pages
• Plain text output in bg, cs, de, dk, el, en, es, , fr, hr, hu, it, nl, no, pl, pt, ro, ru, sk, sl, sr, sv, tr
• Wireless communication with the devices of Synco living product ranges
• Remote access via Siemens web server OZW772.xx
• Intuitive and simple control with Android or IOS App
Data sheet N2741
Operating voltage AC 230 V
Frequency 50 Hz
Power consumption 7 VA
Display Full graphic backlit display
Communication KNX RF-compatible, 868.3 MHz bidirectional (RF)
and KNX TP (wired bus)
Indoor wireless range 30 m
Universal inputs, number 1
Universal inputs Digital 0/1
LG-Ni1000
Universal input, signal Digital 0/1
LG-Ni1000
Relay outputs, number 1
Relay output, switching voltage AC 24...230 V
NO - contact
Relay output, switching current AC 0.02...2 (2) A
Mounting With screws
Degree of protection IP20D
Dimensions (W x H x D) 230 x 130 x 29.7 mm
11-Central apartment unit QAX9__.indd 11 26.07.2018 15:21:42