User Manual

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Building Technologies Division CC1N7494en
20.04.2016
Technical data (cont’d)
Boiler temperature sensor NTC 10 k
Return temperature sensor NTC 10 k
DHW temperature sensor NTC 10 k
Flue gas temperature sensor NTC 10 k
Outside sensor NTC 1 k
Pressure sensor
- Input voltage LMU5… / LMU6...
- Pressure value
DC 0.5…3.5 V
can be freely parameterized up to 9.9 bar
Room thermostat / time switch
- Output voltage LMU5… / LMU6...
- Contact resistance
- Cable length
min. RAC 19 V at 7 mA
typically RAC 26 V at 10 mA
Max. RAC 31.5 V at 12 mA
(50 Hz half-wave rectified)
Max. 300 
 40 m
Room unit
- Connection
- Cable length
- Cable resistance
- Power consumption
QAA73…
QAA53…
2-wire (interchangeable)
Max. 50 m
Max. 2 x 5 
30 mW (typically)
Electrical connections