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Examples for settings
Amplitude
Period
duration
0.2 K
5 minutes
1.0 K
10 minutes
1.0 K
10 minutes
2.5 K
20 minutes
2.5 K
20 minutes
5.0 K
30 minutes
Hysteresis controller (2-point control)
L Hysteresis adjustable from 0.2 K to 1.0 K.
Use + or – to select function 1.
†
Confirm with >. This takes you to the entry of the
†
hysteresis.
Use + or – to enter the hysteresis.
†
Response
In over or undersized heating systems, a hysteresis controller
is characterised by a minimum switching frequency and low
temperature deviations.
Function
The clock thermostat switches the heating off when the set
temperature plus amplitude value is exceeded.
The clock thermostat switches the heating on again when
the temperature falls below the set temperature minus the
amplitude value.
6. Set the optimisation function
The optimisation function allows you to achieve a certain
room temperature at a desired switching point. It is indicated
how many minutes earlier the heating starts. This time applies
per K of temperature difference between actual temperature
and desired set temperature.
Example
At 06.00 a.m. in the morning, a change in the bathroom is
programmed from reduction (17 °C) to comfort temperature
(23 °C).
Without optimisation function, the room thermostat enables
the heating request for the bathroom at 06.00 a.m. Depend-
ing on the size of the room and the installed heating system,
the bathroom reaches the desired 23 °C at 6.30 a.m., for
example.
Heating
Room properties
∙ Fan heater
∙ small room
systems
∙ very good insula-
∙ oversized heating
ted rooms
systems in rela-
∙ for all rooms,
tion to room size
which, due to
∙ any fast heating
their design
system that can
respond quickly
quickly deliver
and extremely to
a lot of energy
switching the
into a room
heating on/off
∙ fast mixing valves
∙ fast mixing valves
∙ medium sized
∙ Central heating
rooms
systems with
∙ large, poorly
for example
insulated rooms
radiators
∙ slow mixing
valves
∙ slow mixing
∙ large rooms that
valves
need much time
∙ Underfloor central
to warm up and
heatings
cool down just as
∙ Quartz radiators
slowly
∙ Wall and ceiling
heating systems
∙ slow or inert
heating systems
With a set optimisation of 5 min/K, the thermostat sends the
heating request earlier, as follows:
Set temperature at 06.00 a.m. 23 °C
Actual temperature 17 °C
i.e. Delta T = 6 K
6 K * 5 min/K = 30 min
The controller sends the heating start 30 min. earlier and
reaches the setpoint temperature at 06.00 a.m.
L The optimisation value depends on the spatial and heating
conditions.
Under Settings
→
†
tion function.
Use + or – to set the time from 1 min to 60 min or OFF and
†
confirm with >.
7. External input
The external input
can be configured for various external
sensors.
!
The external input is active, therefore do not use exter-
nal voltage. The connected contact must be floating.
At 8120200, the input is not safely separated from the
mains, therefore only connect insulated components.
L RAMSES 813 top3 HF does not have an external input.
Under Settings
→
†
input.
Use + or – to set one of the 6 options and confirm with >.
†
The following options are available with the individual sen-
sors/contacts:
0 → inactive
1 → floor
2 → external temperature sensor
3 → presence detector
4 → window contact
5 → telephone contact
Floor
Temperature
limit
External
no options
temperature
sensor
Presence
Temperature
detector
selection
Window
no options
contact
Telephone
Temperature
contact
selection
use + or – to select the optimisa-
use + or – to select the external
Floor temperature restriction, floor
temperature selection adjustable
between 20 °C and 50 °C; floor sensor
(9070321)
L No safety temperature limiter, but
device type 1 B in accordance with
EN 60730-1.
The internal temperature sensor will
be switched off; external temperature
sensor (IP 65) (9070459).
This temperature is used for control
if the HVAC output of the presence
detector is switched. If no presence is
detected, the set program is used for
control.
As long as the window contact is open,
the thermostat controls to frost protec-
tion temperature.
Select temperature for the controller if
the telephone contact is switched.
6
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