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468 931 003 312-2
Mounting and operating
instructions
easytimer
electronic room temperature controller
with floor temperature limiter and
time program
FRe L2T, 51781845...
cover 2 parts
(50x50)
cover one part
Caution!
The device may only be opened and installed according
to the drawing on the device or these instructions by a
authorized electrician. The existing safety regulations
must be observed.
In order to comply with protection class II, the neces-
sary installation steps must be taken.
This independently mountable electronic device is
designed for controlling the temperature in dry and
enclosed rooms only, under normal conditions. The
device confirms to EN 60730, it works according oper-
ating principle 1C.
1. Applications
The electronic room temperature controller with floor tem-
perature limiter is used for single-room temperature con-
trol:
• for room heating with limitation to a maximum floor tem-
perature
• for hot water floor heating systems in combination with
thermo-electric actuators normally closed.
The remote sensor F 193 720 is required for measuring the
floor temperature.
Features
• Simultaneous room temperature control and floor tem-
perature limitation
• Limitation of floor temperature to a pre-selected maxi-
mum value
• Night-time set-back via internal timer
• Basic Control Mode (controller starts without timer-func-
tion)
• Simple switching from comfort to set-back temperature
via a pushbutton
• 3 Programs available (7 day, 5/2 day, On-Timer)
• Indicator lamps for "controller calls for heat" and for „set-
back" operation
• 2-pole heater switch (controller remains on power supply,
stand by)
• Mounting in 60mm flush-type box
2. Description of functions
2.1 Functions
The room temperature is measured by the internal sensor
and adjusted via the outer dial. The scale of *...6 corre-
sponds to 5...30 °C.
The floor temperature is measured by the remote sensor
and adjusted via the internal poti (see 2.7). As long as the
timer was not set, the controller controls on comfort tem-
perature (Basic Control Mode).
Note: As long as the timer was not set, the controller con-
trols on comfort temperature (Basic Control Mode).
Pushbutton
The pushbutton allows switching between comfort and set-
back temperature. If set-back mode is selected, the green
lamp will be lit.
The selected temperature will be valid until the next switch-
ing point in the program.
The program can be changed via the pushbutton, see 2.3
Heater switch 0/I
It switches the heater On or OFF. The controller remains on
power supply (stand by), the clock continues to run.
Lamps
red:
Controller calls for heat
green:
Set-back mode is activated
Basic Control Mode
After switching on the first time, the basic control mode is
activated.
As long as the timer was not programmed, the controller
works without time-program. If the timer was set once, the
controller works with the time-program until Master-Reset
will be activated see 2.5
In mode ON-Timer the basic control mode will not be used.
Programs
One of the following programs can be selected:
7 Days;
Set-back for 7 hours on each day
5/2 Days:
Set-back for 7 hours from Sunday night until
Thursday night.
On Friday and Saturday night, there will be no
set-back.
On-Timer:
Pressing the pushbutton will set the system to
comfort temperature for 2 hours
No program: Change over of temperatures via pushbutton
The set-back time, or timer time, can be adjusted (see 2.3).
Function of the 7 day and 5/2 day programs
(set-back time)
Once the set-back timer is set, the selected program will be
repeated every 24 hours.
Example:
If the timer is set at 22:00 h, the set-back temperature will
be effective for 7 hours starting at 22:00 h. From 5:00 h, the
comfort temperature will again be effective, until 22:00 h.
ON Timer function
(short time comfort temperature)
Pressing the pushbutton will set the system to comfort tem-
perature for 2 hours. After that, the set-back temperature
will be effective. Setting the time see 2.3
Selecting the programs via jumpers (see 5.)
Program
J1
J2
7 Days (pre set)
closed
closed
5/2 Days
closed
open
On-Timer
open
closed
No program
open
open
2.2 Setting the set-back timer
Note: As long as the clock is not set, the controller controls
on comfort temperature (Basic Control Mode).
Setting the timer:
– Press and hold the pushbutton
– When the red lamp lights up, release pushbutton
From this moment, each day the set-back temperature will be
activated.
When selecting the 5/2 day program, the timer must be set
on Sunday evening.
After a voltage failure (red lamp flashes), the timer must be
set again.
Principle of setting the timer
press key until red lamp is
on, that's it
comfort
temperature
Lamp green
= off
Lamp green
set-back
temperature
5:00 o'clock
e.g. 22:00 o'clock
2.3 Programming the set-back time or on-timer
time
(only necessary if times other than the factory pre-sets are
desired)
The following times can be adjusted
5-2 days, 7 days:
– Number of hours for set back temperature
(factory pre-set= 7 h)
Range 1...23 h
On-timer:
– Number of hours for comfort temperature
(factory pre-set = 2 h)
Range 1...23 h
Perform the steps described below:
a. Start programming
Press and hold pushbutton
When the green lamp lights up, release pushbutton
(The red lamp which comes up before, has to be ignored)
b. Reading the current values
The red lamp flashes. The number of flashes indicates
how many hours are currently set
c. Set hours
for each hour, press the pushbutton once. e. g. for 8 h,
press pushbutton eight times
d. Finish programming
Press and hold pushbutton until both lamps switch off.
If the hours are only to be read, it is not necessary to per-
form step "c" and "d".
* If the pushbutton is not pressed for more than 20 seconds
during programming, the adjustment mode will be aborted
and the current values are kept.
2.4 Selecting the set-back temperature
Press and hold pushbutton until both lamps light up.
(the single red and geen lamp befoe has to be ignored)
Release button:
green lamp
= set-back by 3 °C
red lamp
= set-back by 5 °C (default = 5 °C)
Click button for changing temp. (toggles red and green).
Press and hold button until LED goes off.
See note * at the end of 2.3
2.5 Master Reset (Restoring factory settings)
Press and hold pushbutton until both lamps start blinking.
(the single red and geen lamp befoe has to be ignored)
Then press pushbutton again until both lamps go off.
See note * at the end of 2.3.
Now the basic control mode is active. If the timer was pro-
grammed, it has to be re-programmed.
In case of modification of jumper, the controller will be
reseted.
2.6 Voltage failure
In the event of a voltage failure lasting more than 4 hours
(after powered for min. 1h), only the set-back timer has to
be set. All other data (adjusted program) will be kept.
A flashing red lamp indicates if the set-back timer must be
set.
2.7 Floor temperature limitation
The internal potentiometer (left to the push button) is used
to set the maximum floor temperature. The arrow in the
potentiometer points to the desired temperature.
The floor temperature will not be
allowed to exceed this set value.
The selected floor temperature is
indicated by the lamps when the
controller is switched on.
The green lamp indicates the
higher digits, the red one the
lower digits of the temperature.
e. g. 35 ° = green lamp flashes 3
times, then red lamp flashes 5 times.
2.8 Call for heat by the controller
The amount of needed heat is calculated by the two control
values (of the room and the floor). The room temperature
will be controlled as long as the floor temperature is below
the selected max. value. If this value is exceeded, the heat-
ing will be switched off until the floor has cooled down.
2.9 Fault of the foor sensor
If a sensor fault (short-circuit or break) occurs, the controller
will switch to fault mode. The heating will work with max. 30%
of the energy (running for 30% of the time) This provides
frost- and overheat protection.
In the event of a sensor fault, both lamps will flash.
2.10 Function of the lamps
Function
Green lamp
Heating is on
Set-back mode
on
Floor sensor fault
flashes
= on
Max. floor heating
flashes
(for higher digit)
Set-back timer to be set
Time
Programming, press key until:
Starting the set-back timer
Set-back time,
on-timer time
on ~ after 9 sec
Set-back temperature
on ~ after 12 sec
Master Reset
flashes ~ after 15 sec
3. Mounting / Commissioning
The controller should be mounted at a location in the room
which:
• can be easily accessed
• is free of curtains, cupboards, shelves etc.
• allows free air circulation
• is not exposed to direct sunlight
• is not draughty (when doors or windows are opened)
• is not directly influenced by the source of heat
• is not located on an outer wall
• is approx. 1.5 m above the floor.
Electrical connection
Caution! De-energize the electric circuit first
Perform the steps described below:
• Pull off the temperature adjustment button
• Release the fixing screw
• Remove the upper part of the casing
• Connection acc. to circuit diagram (see bottom)
After power on, the adjusted maximum floor temperature
will be displayed see 2.7.
After power on, the basic Control Mode is active see 2.1
Floor sensor F 193 720
The remote sensor must be mounted in such a way that the
temperature to be limited can be correctly recorded.
The remote sensor should be installed in a protective tube.
This will facilitate simple future replacement.
Do not install the sensor close to mains cables. In other
cases a shilded cable has to be used.
The sensor can be extended to max. 50 m by means of a
cable suitable for mains voltage.
Caution! Sensor leads carry mains voltage (230 V).
4. Technical data
Order designation
EDP No.:
Temperature setting range:
Room temperature
Floor temperature
Indicator lamp red
green
Heater switch
Supply voltage
Power reserve
Output
Switching current:
Control algorithm
Switching temperature
differential
Temperature sensor:
for room temperature
for floor temperature
Temperature set-back
for room temperature
Range limitation
Protection class of housing
Degree of pollution
Software class
Class of housing
Calculation impulse voltage
Temperature for the
Ball compression test
Voltage and Current for the
for purposes of
interference measurements
Ambient temperature
Storage temperature
Weight
Sensor characteristics
10 °C
66.8 kΩ
20 °C
41.3 kΩ
25 °C
33 kΩ
5.Circuit diagram
Red lamp
on
flashes
flashes
(for lower digit)
flashes
Position of Jumper
on ~ after 3 sec
on
flashes
Dimensions
FRe L2T, L2T/50
517 8184 5...
*...6 (5...30ºC)
20...50ºC
call for heat
Set-back temperature
2-pole (controller remains on
power, = stand by)
230 V AC (195...253 V) 50 Hz
4 h
Relay make contact
100 mA...16 A cosϕ = 1;
100 mA... 4 A cosϕ = 0.6
Proportional controller (similar
to continuous through PWM)
~1°C
internal
Type F193 720 (length 4 m,
can be extended up to 50 m)
3°C or 5°C selectable
insight the adjustment button
IP 30
2
A
II (see Caution on page 1)
2,5 kV
75°C
230 V, 0.1 A
0 ... 40ºC
–25...70ºC
90g
30 °C
26.3 kΩ
40 °C
17.0 kΩ
50 °C
11.3 kΩ
for conduit boxes
according to DIN 49073
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