STIEBEL ELTRON RTF 24.06.2003 - 19.12.2004 - Manual (Page 4)

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The RTF controls the heat output of your
under-floor heating system.
1.1 Operation
After switching on the under-floor heating
with the on/off switch (1) on the RTF and
setting the temperature with the temperature
selection knob (2), the floor will heat up and
stay at the set temperature.
During the heating times the red LED light
(3) will illuminate.
All electrical connections and installation
work must be carried out by a competent
person in accordance with these instructions
and I.E.E. Regulations.
If installed in a bathroom or shower room
the controller must be located outside of
protection zones 1 and 2.
If the sensor probe is damaged, short-
circuited or not connected, the heating
system will be switched off.
1. Operation instructions
for the user and the professional
If a separate time-switch is installed in
conjunction with the RTF, the green set-back
light (4), will illuminate during the off periods
and set the temperature to approx. 5 K
below the selected temperature.
1.2 Temperature range
limiting
The range of temperatures that can be
chosen can be restricted by using the limiters
located beneath the temperature selection
knob. To do this, take the following actions:
– Carefully remove the temperature selection
knob (2) with the help of a screwdriver.
– Remove the locking pin (5) by pulling it out.
– Slide the red (maximum) and / or blue
(minimum) plastic disks (6) to the
appropriate position e.g. Red – 3 and Blue
– 2.
– Replace the locking pin
– Replace the temperature selection knob,
ensuring that the black line is within the
chosen limits before finally pressing into
position.
2.1 Installing the
temperature sensor
The end of the floor temperature sensor
probe must be sited in the floor, within the
area of the heating mat. It is recommended
that the sensor and cable are sited within a
piece of trunking or conduit ( See the Ope-
rating and Installation Instructions for the
Heating Mats). The sensor cable can be
extended to up to 50 metres if required.
In the case of a fault live electricity
can be present in the controller or
sensor lead.
2.2 Installing the Controller
The controller is designed to be fitted into a
flush back box with an opening of at least
Ø 55 mm.
The controller may be installed separately or
in a group of flat-switches by using the
2. Installation instructions
for the professional