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Preparation of wires and conduit box
Before installing the thermostat, prepare the wires according to the diagram on
the right:
If an external temperature sensor is used, the sensor connection should be
max. 80 m or calibration is required.
The 86x86 square conduit box used must be min. 40 mm deep for proper in-
stallation of RDF300.02/SRL thermostats.
Note: Dimensions provided are based on the Siemens ARG71 (S55770-T137)
conduit box data sheet for reference only.
Installing the thermostat
To install the thermostat, proceed as follows:
1. Flush-mount the 86x square conduit box with both mounting holes oriented horizontally.
2. Make sure the wire length from the 86x square conduit box suffices and the wires are properly connect-
ed to all thermostat terminals.
3. Connect all wires to the terminals as shown.
4. Adjust all wires to prevent potential short-circuits between adjacent connections.
5. Push carefully the mounting plate towards the square conduit box.
6. Level the mounting holes of mounting plate with the conduit box, and make sure the conduit box is com-
pletely covered. Place the screws at the two mounting holes and tighten.
7. Place the bottom part of the front panel, and align with the two catches at the bottom of the mounting
plate.
8. Slowly swing the front panel towards the mounting plate. To avoid damaging the pins, take extra care to
ensure that the 16-way connector is connected properly between front panel and mounting plate. Then,
press each side of the front panel to finish installation.
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2016-08-22
RDF300.02/SRL
Siemens Building Technologies
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