Siemens LMU54 Series Basic Documentation page 123

Siemens Building Technologies
HVAC Products
• External ignition module (X3-03)
- Voltage
- Current
- Max. cable length
With regard to switch-on and switch-off characteristics, every type of external
ignition module used must be approved by Siemens !
• Integrated ignition module (X3-04)
- Min. sparking power / pulse
- Max. sparking power / pulse
- Min. pulse sequence
- Max. pulse sequence
- Electric shock hazard
- Open-circuit voltage
- Max. no-load operation
Basic Documentation LMU54... / LMU64...
10 Technical data
AC 230 V +10 % -15 %
5 mA ... 0.5 A, cos ϕ > 0.8
must still ignite at AC 175 V
3 mJ at 2 kΩ
4 mJ at 2 kΩ
in the range of 175 V ... 253 V
10 Hz at 175 V
25 Hz at 253 V
cannot be touched
20 kV
123/171
CC1P7494en
07.11.2002
3 m
30 s