User Manual

7-33
Heating, ventilation and air conditioning - room temperature control
Room temperature controllers with integrated sensing
i-system
Siemens Switzerland Ltd
Building Technologies Division
2019www.siemens.com/gamma
7
Range overview AQR2576..
Mechanical design Dimensions (W x H) Stock No. Product No. DT
EU (CEE/VDE) 70.8 x 70.8 mm S55720-S207 AQR2576NF A
IT (3 Modular) 110 x 64 mm S55720-S209 AQR2576NG C
UK (British Standard) 83 x 83 mm S55720-S208 AQR2576NH C
US (UL) 64 x 110 mm S55720-S210 AQR2576NJ A
Base modules with KNX for CO
2
measurement
• Base module with maintenance and recalibration-free CO2 sensor to plug onto a front module
• 1 analog input to connect temperature sensors with NTC 10k sensing element to measure room, oor,
or ceiling temperature
• 2 multifunctional binary inputs to connect window contacts or buttons
• Power supply via KNX bus, bus load < 5 mA
• Ventilation control across 3 settable switching steps for relative humidity & CO2 concentration, and 3
switching signal objects On/Off, or one positioning signal object 0…100% to control a ventilation actor
• Temperature control as continuous control (PID algorithm) for pure heating operation, heating and
cooling operation, and adjustable positioning variable as continuous positioning signal 0…100%, or as
pulse-width modulated (PWM) switching signal On/Off
• Via setpoints for room temperature and relative humidity, and CO2 concentration, adjustable via KNX
bus
• Adjustable commissioning and control parameters
• Integrated bus coupler with programming button and LED
Data sheet N1411
Voltage supply KNX bus
Measuring range CO
2
: 0...5000 ppm
Analog inputs, number 1
Analog inputs Passive temperature sensor NTC 10k
Digital inputs, number 2
Digital inputs Potential-free contacts
AQR2576..
Remote sensor for AQR257..
Product Title Data sheet Stock No. Product No. DT
Front module with passiv temperature measurement, LG-Ni1000 N1408 S55720-S133 AQR2531ANW A
Mounting plate EU (CEE/VDE) N1408 S55720-S161 AQR2500NF A
Cable temperature sensor PVC 2 m, NTC 10k N1831 BPZ:QAP1030.200 QAP1030.200 A
29-Wall-mounted.indd 33 19.08.2018 15:13:27