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Siemens
Central apartment unit QAX910
CE1N2707en
Building Technologies
06.01.2009
Use
•
Management of heating control for one apartment
•
Increase of Economy room setpoint and of the minimum flow temperature set-
point as a function of the composite outside temperature
•
Collection of heat requests from the individual rooms
•
Generation of heat request signal and transmission to heat generation via wired
bus, heat demand relay, or DC 0…10 V output to the RRV912 or RRV934 heat-
ing circuit controller
•
Suited for heating plant with central heat distribution (e.g. floor heating) and ra-
diators with decentralized connections
•
Control of heating circuits with RRV912 / RRV918 heating circuit controllers and
SSA955 radiator control actuators
•
Flow temperature control of 2 independent room groups with limitation function
(minimum / maximum)
•
Maintained return temperature (high / low)
•
Control of room group pumps via universal relay outputs
•
Control of DHW pump / diverting valve via universal relay output. Acquisition of
DHW temperature via universal input
•
Management of ventilation plant via RRV934 multi-controller
•
Night cooling function (bypass function of HR)
•
Control of air conditioners (split units) via the universal outputs (locally and
RRV91x) or S-Mode (KNX TP1)
•
Release of cooling enable contacts per room depending on the composite out-
side temperature, the current HVAC level, the state of the windows, and a heat
request
•
Monitoring of door contacts, window contacts and smoke detectors
•
Operation of lights and blinds via softkeys, time switch and events
•
Simulation of presence through random switching of lights combined with per-
manent ON of one or several light sources
•
Generation, storage and retrieval of scenes
•
Display of progression of outside temperature and atmospheric pressure over
the last 24 hours with the help of the QAC910 meteo sensor
•
Display of open doors and windows
•
Display of weather trend (sunny, cloudy, rainy)
•
Remote access via Siemens OZW77x central communication units
Equipment combinations
The central apartment unit can be used in connection with the following RF prod-
ucts of the Siemens Synco living system and those of other suppliers of wireless
KNX products:
Description Product
No.
Documentation
Room unit
QAW910
N2703en
Room temperature sensor
QAA910
N2701en
Meteo sensor
QAC910
N2702en
Heating circuit controller
RRV912
N2705en
Heating circuit controller
RRV918
N2706en
Multi-controller RRV934
N2709en
Radiator control actuator
SSA955
N2700en
RF repeater
ERF910
N2704en
RF adapter plug, switching
KRF960-x
N2718de
