Data Sheet for Product

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Siemens Central apartment unit with consumption data acquisition QAX913 CE1N2740en

Building Technologies 2016-01-30

Use

• Heating and cooling control management for an apartment.

• Radiator / floor cooling monitored for dew point.

• Increase of the Economy room setpoint and minimum flow temperature setpoint

dependent on composite outside air temperature.

• Collects heating / refrigeration requests from individual rooms.

• Generates heating or refrigeration request signals and transmits them to heat

and refrigeration generation via wired bus, via heat / refrigeration demand relays

or via DC 0…10 V output to the RRV912 or RRV934.

• Suited for heating and cooling plants with central distribution (e.g. floor heating)

and radiators with decentralized connections.

• Limits the heating setpoint (max.) and cooling setpoint (min.).

• RRV912 / RRV918 heating controllers control the heating circuit controllers and

SSA955 radiator control actuators.

• Flow temperature control of 2 independent room groups with limitation function

(min. / max.) and maintain return temperature high / low.

• Room group pump control via universal relay outputs.

• Hot water pump / diverting valve control via universal relay output; record hot

water temperature via a universal input.

• Ventilation plant management via multi-controller RRV934.

• Night cooling function (heat recovery bypass function).

• Air conditioning control (split units) via the universal outputs (local and RRV91x)

or via S-mode (KNX TP).

• Release of cooling enable for each room dependent on the composite outside

air temperature, present HVAC level, window status and a heating demand.

• Monitors door and window switches and smoke detectors.

• Monitors water, CO

and gas detectors.

• Shut off elements lock water and natural gas lines.

• Operation of lights and blinds via softkey, time switch and events.

• Presence simulation using random switch on and off, combined with continuous

ON of one or more light sources.

• Generate, store and retrieve scenes.

• Display outside temperature curve and outside air pressure over the last 24 hours

using the QAC910 meteo sensor.

• Displays open windows and doors.

• Displays weather trends (sunny, variable, rainy).

• Records consumption data for heat, water, electricity and gas using the consum-

ption data interface WRI982.

• Remote access via Siemens OZW77x central communication units.

• Smart phone app or web portal remote control of the Synco living system.