AEG FRTD 903 TC Instructions Manual page 12

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FIG. 1 - CONTENT

• Thermostat

• Sensor

The thermostat is an electronic PWM/PI thermostat for temperature

control by means of an NTC sensor located either externally or

internally within the thermostat.

The thermostat is for flush mounting in a wall socket. A baseplate

for wall mounting is also available.

Product programme

FRTD 903 TC

FIG. 2 - WARNING – Important Safety Instructions

Disconnect the power supply before carrying out any installation or

maintenance work on this thermostat and associated components.

The thermostat and associated components should only be installed

by a competent person (i.e. a qualified electrician). Electrical instal-

lation must be in accordance with appropriate statutory regulations.

FIG. 3 - THERMOSTAT PLACEMENT

Mounting of sensor

The floor sensor contains a safety extra-low voltage (SELV) circuit,

allowing it to be placed as close to the floor surface as possible

without having to take account of the risk of shock should the sen-

sor cable become damaged. The two wires connecting the sensor

to the mounting box must be additionally insulated, e.g. shrink flex.

To prevent loose wires in the fixed installation from coming into

contact with the terminal block for the floor sensor, they must be

restrained using cable ties.

It is strongly recommended that the cable and sensor are placed in

a non-conductive installation pipe embedded in the floor. The end

of the pipe must be sealed and the pipe placed as high as possible

in the concrete layer. Alternatively, the sensor can be embedded di-

FRTD 903 TC

Instruction

English

Clock-thermostat with two sensors:

floor sensor and built-in room sensor.