CLASSIFICATION
The product is a class II device (reinforced
insulation) and the product must be connected
to the following conductors:
1)
Phase
(L)
2)
Neutral
(N)
MOUNTING OF SENSOR (FTE 900 SN)
Floor sensor: Placed in installation pipe which is
embedded in floor (fig. 4). The pipe is thickened
in the end and placed as high as possible in the
concrete layer.
Sensor cable may be extended up to 50 m with
separate cable for power current. Two
conductors in a multiconducting cable, which
e.g. is used for supply of heating cable, may not
be used. Voltage signals, which may disturb the
function of the controller, may occur. If the cable
is used with screen, the screen may not be
connected to the ground, but must be
connected to terminal 7. The best installation is
attained with a separate cable for the sensor,
which is then mounted in a separate conduit.
PLACEMENT OF CONTROLLER WITH BUILT-
IN SENSOR (RTE 900 SN)
The controller is to be mounted on the wall with
free air circulation around it (fig. 5). Furthermore
it has to be placed where it is not influenced by
any other heating sources (e.g. the sun), draft
from doors or windows, or by the temperature
of an exterior wall.
FTE 900 SN / RTE 900 SN units contain a fault
interrupter circuit which interrupts the heating in
case of disconnected or short-circuited sensors.
MOUNTING OF CONTROLLER (fig. 1-3)
1.
Remove the control knob (A).
2.
Screw (B) should be unscrewed and the
cover lifted off.
3.
Electrical connections can be made as
shown in the wiring diagram(fig. 2-3).
4.
The controller can now be filled into the
wall box.
- frame and cover is mounted
- controller knob is replaced
SETBACK TEMPERATURE
Setback of temperature setting is activated by a
230 V (L) signal from an external time switch to
terminal 5. Setback temperature is fixed 5˚C.
TEMPERATURE SETTING
FTE 900 SN / RTE 900 SN has a scale range of
+5/+35˚C. To assist the adjustment, the
controller has a LED (D) which will glow RED
when the heating is ON. The controller should
be set to maximum temperature setting until the
desired temperature of the room or floor is
achieved. The control knob should then be
turned back until the LED goes out. Fine
adjustments can be made over the next 1/2
days to suit individual requirements.
CONTROLLER ADJUSTMENT (RTE 900 SN)
When the room temperature has been
stabilized, the controller set position may be
adjusted to match actual room temperature.
Measure the temperature of the room with an
accurate thermometer. Remove control knob
and reposition it so that the indicated
temperature line shows the same as the
measured temperature. This adjustment can be
done in steps of 3°C.
MAX./MIN. TEMPERATURE
A locking mechanism is positioned behind the
control knob to limit the amount of adjustment
possible. By loosening the little screw, the scale
range can be locked, e.g. between 20˚C and
25˚C. The red ring indicates the maximum
temperature and the blue ring indicates the
minimum temperature.