Mounting Instructions - Carrier WTC-LEX-WD Bedienungsanleitung

2. Mounting instructions

The expansion module can be mounted on a
DIN rail. The module has four mounting
holes 7.2 × 4 mm. The expansion module can
be mounted on a panel or on a wall by using
appropriate screw types (use sheet metal,
thread forming, or self-tapping screws
accordingly).
Turn off the power before any kind of
servicing.
For some models, if the expansion module is
to be installed out of an electrical box, it is a
must to use the optional strain-relief and
terminal block cover.
IMPORTANT: All mountings holes might not be
retrievable on some models. At least two of them
are nevertheless usable in any case.
Wiring recommendations
All wiring must comply with electrical
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wiring diagrams as well as national and
local electrical codes.
The module must be connected to the
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protective earth via its power supply
connector.
Make sure all wiring is rated at least
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250 VAC for -ST and -WD models.
To connect the wiring to an expansion
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module, use the specified terminal
connectors. Use a small flat screwdriver
to tighten the terminal connector screws
once the wires have been inserted (strip
length: 6 mm, tightening torque 0.5 Nm).
Power cables (i.e. for 2- and 3-wire
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voltage and current inputs and outputs, as
well as relay and triac outputs) should be
kept apart from other types of wiring for
safety and to avoid any ambient noise
transmission to other wires.
Keep all wires away from high speed data
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transmission cables (e.g., Ethernet) and
power cables.
Keep input and output wiring in conduits,
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trays or close to the building frame if
possible.
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DIN-rail mounted installation
1. Ensure the DIN rail is properly mounted
on the wall.
2. Clip the expansion module onto the DIN
rail.
Figure 3: Rail-mounted expansion module
Wall-mounted installation
1. Use the back plate's mounting holes to
mark the location of any holes that need
to be drilled.
2. Drill the required holes (at least two
holes).
3. Clean the surface and mount the
expansion module using the appropriate
screw types.
Figure 4: Wall-mounted expansion module