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Use
Use
Application
CE1Q2282en
04.09.2001
QAA53.110
Room Units for
Boiler Temperature
Control
OpenTherm interface
Digital, multifunctional room units for enhancing the functionality of boiler
controllers.
With integrated temperature sensor, heating program and a number of control
Used in combination with a boiler controller or heating controller. Room temperature
control in:
• Single or 2-family houses
• Smaller multifamily houses
• Holiday houses and villas
For use in all standard heating systems, such as radiator or convector heating systems.
Especially suited for heating plants with pump heating circuits. If the boiler control
systems feature integrated mixing valve control, it is also possible to control mixing
heating circuits.
QAA73.110
QAA53.110
QAA73.110
Siemens Building Technologies
OEM
HVAC Products
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Summary of Contents for Siemens QAA53.110
- Page 1 For use in all standard heating systems, such as radiator or convector heating systems. Application Especially suited for heating plants with pump heating circuits. If the boiler control systems feature integrated mixing valve control, it is also possible to control mixing heating circuits. Siemens Building Technologies CE1Q2282en HVAC Products 04.09.2001...
- Page 2 • The heating programs and the d.h.w. program can be reset to their default settings • Programming lock (e.g. for child-proofing) • Special mode for setting the parameters of Siemens boiler control systems Siemens Building Technologies Room Units QAA53, QAA73...
- Page 3 Usually, maximum limitation of the flow temperature is the flow temperature predefined by the BMU and sent to the room unit via (only QAA53.110) OpenTherm. If the BMU does not transmit any limitation , it can be lowered on the room unit from 80 °C (standard setting) to 60 °C by cutting the oppropriate wire link.
- Page 4 EN 60730-1, EN 60730-2-9 Measuring range 0...45 °C Room sensor Backup of time switch min. 12 h Other features Software class A to EN 60 730 Weight approx. 0.17 kg Siemens Building Technologies Room Units QAA53, QAA73 CE1Q2282en HVAC Products 04.09.2001...
- Page 5 • The controller may not be exposed to dripping water • Permissible ambient temperature: 0..0.50 °C • The local regulations for electrical installations must be complied with. Installation Siemens Building Technologies Room Units QAA53, QAA73 CE1Q2282en HVAC Products 04.09.2001...
- Page 6 OpenTherm terminal A (interchangeable) OpenTherm terminal B (interchangeable) 23 mA max QAA73 and QAA53 with Dimensions Room unit 1...2.5 Panel cutout +0.8 Siemens Building Technologies Ltd. ã Subject to alteration Siemens Building Technologies Room Units QAA53, QAA73 CE1Q2282en HVAC Products 04.09.2001...
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