User Manual RelAir R2M · 07/2018 · VERSION 1.1
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RELAIR R2M
2 Installation and commissioning
2.1 Mounting and cabling RelAir Pro
The bottom part of case is first attached to the wall with the terminals arranged downward.
Please use 2 screws mounted through the outside drillings at the case.
The cable for the M-Bus interface are led through the self-sealing cable glands in the housing.
You should break the cable glands with a small screw driver if you use flexible cables. To
ensure a high protective class of up to IP65 the hole must be much smaller than the outer
diameter of the cable. If you lift the terminal connectors and feed the cables far enough through
the glands, you can connect the wires comfortably outside of the housing. Afterwards please
withdraw the cables again and put the terminals on the appropriate pin rows on the circuit
board. Please make sure that the cables are not routed at the top left near of the antenna as
this could have a negative effect on the radio signals. The strain relief is given by looping the
enclosed cable straps around the cable. If you have completed all assembly and configuration
work, you should protect the device against manipulation with one labels on each screw on the
cover of the case.
The accompanying drawing shows the dimensions for wall mounting: