Siemens LMU54 Series Basic Documentation page 124

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