User Manual

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Building Technologies CC1N7491.1en
03.04.2018
Connectors list LMU34 (cont´d)
No.
Connector
type
Pin code
print on
PCB
Description LMU34.2 LMU34.3
X403
Lumberg 3850
4 poles
PELV: PARA-IFC (OCI425) OCI425 / ACS425 OCI425 / ACS425
1 Internal
2 Internal
3 Internal
4 Internal
X500 Tabs 6.3 mm
HT: Functional earth (burner ground) (not for
protection purposes)
Cable length ′ 1 m Cable length ′ 1 m
X501 VT tabs
4.8 mm
HT: Flame (ionization probe) < AC 100 V
cable length ′ 1 m
< AC 100 V
cable length ′ 1 m
X900 Tabs 6.3 mm PELV: Functional earth (burner ground) (not
for protection purposes)
Cable length ′ 1 m Cable length ′ 1 m
HT: High Tension – Mains voltage connection
PELV: Protective Extra Low Voltage – Low voltage connection
The unit is supplied with the temperature setpoint potentiometer in the OFF position.
¹) Only use components approved by Siemens AG!
²) A special conversion list (hard copy) must be used to retrieve correct measurement
values and to set correct threshold values to related functions
³) The fan must meet the requirements of specification
LMU5x_TrafoFan_en_V1.2.doc, chapter 3 “Specification for fans with mains voltage
operated DC motor”