Mounting , Electrical Installation And Service - Siemens LMV50 Series Manual

Installation
Electrical connections
and wiring
Connection of
LMV5 CAN bus
Building Technologies
13 Mounting , electrical installation and
service
∂ The burner / boiler manufacturer must ensure degree of protection IP40
through appropriate mounting
∂ Depending on the field of use, external requirements may impose more
stringent degrees of protection, which must then be observed
∂ When fitted, the maximum permissible ambient temperature must not be
exceeded!
∂ The unit is designed for mounting inside the burner casing or in a control
panel
∂ The AZL5 has its own housing and can be mounted in a suitable location
(detached from the LMV5), e.g. away from the burner or in the control panel
door
∂ Condensation water must not drip on the unit, neither in operation nor while
service work is performed!
∂ The power transformer is not integrated in the LMV5 and must be fitted by the
burner / boiler manufacturer in a suitable location
(Only the AGG5.2XX transformers specified by Siemens may be used!)
The entire RAST5 connection area does not feature functional low-voltage.
The RAST3.5 connection area on the unit's small side offers functional low-voltage.
∂ When making the wiring, the functional low-voltage section must be strictly
separated from the other sections to ensure protection against electric shock!
∂ Adequate protection against electrical shock on unused AC 230 V terminals
(RAST5) must be provided by fitting dummy plugs!
∂ To isolate the unit from mains supply, a multipolar switch must be used
∂ For wiring the bus users, only the cables specified by Siemens may be used!
∂ The electrical contacts used by the external signal sources (pressure switch-
min, pressure switch-max, load controller, etc.) must be gold-plated silver
contacts!
∂ The ignition cable must be run to the ignition electrode as directly as possible,
with no loops
It must never be laid parallel with or very close to other electrical cables.
Figure 93: Connection of LMV5 CAN bus
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CC1P7550en
22.05.2018