Siemens LMU64 Series - Page 124

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Siemens Building Technologies Basic Documentation LMU54... / LMU64... CC1P7494en
HVAC Products 10 Technical data 07.11.2002
• Transformer connection, secondary side (X15) refer to specification of transformer
• Fan control (X14)
- Max. current draw when using stepper
motor control for combustion optimization
and DHW diverting valve DC 1.2 A
- Max. current draw without using stepper
motor control for combustion optimization
and DHW diverting valve DC 1.5 A
- Cable length ≤ 3 m
• Boiler temperature sensor (X11) NTC 10 kΩ
- Max. continuous temperature 100 °C
- Max. temperature short-time 125 °C
- Sensor tolerance ≤ ±2 K
- Cable length ≤ 3 m
- Aging ≤ ±3 %
- τ ≤ 20 s
- Other requirements to DIN EN 60 730-2-9
- Temperature-resistance characteristic:
Temperature [°C] RNTC [kΩ] Temperature [°C] RNTC [kΩ]
-20.00 96.360
50.00 3.605
-10.00 55.047
60.00 2.490
0.00 32.555
70.00 1.753
10.00 19.873
80.00 1.256
20.00 12.488
90.00 0.915
25.00 10.000
100.00 0.677
30.00 8.059
110.00 0.508
40.00 5.330
120.00 0.387
The QAx36xx must be used in compliance with their specifications.
• Return sensor (X11) NTC 10 kΩ as under boiler sensor
• DHW sensor (X11)
1)
NTC 10 kΩ refer to Data Sheet QALx6xx
- Cable length ≤ 3 m
• Flue gas sensor (X11) NTC 10 kΩ refer to Data Sheet QAx3x...
- Cable length ≤ 3 m
• Outside sensor (X10-06) NTC 1 kΩ refer to Data Sheet QAC34...
- Cable length ≤ 40 m
• Pressure sensor (X11)
- Min. output voltage LMU DC 9 V at 5 mA
- Typical output voltage LMU DC 14 V at 5 mA
- Max. output voltage LMU DC 19 V at 5 mA
DC 20 V at 0 mA
- Input voltage LMU DC 0.5 V ... 4.5 V
with a dummy load of 12 kΩ
- Cable length ≤ 3 m
• Pressure sensor (X11)
- Huba Control, type 502 0 ... 4 bar
- Imit on request
Note