Honeywell TheraPro HR90 Instruction Manual page 13

Parameters 5 to 7 – Window function
In order to save energy, the radiator controller closes the
radiator valve when you open a window resulting in a
large drop of the temperature.
When you close the window so that the temperature
rises the radiator controller opens the radiator valve
again.
If you should ever forget to close the window, the
radiator controller opens automatically after the set time
in order to ensure frost protection.
Parameter 8 – Valve stroke
The radiator controller operates with the optimum valve
stroke set in the factory.
If the entire valve stroke is to be used or if the valve does
not open completely, activate the full-stroke mode.
Parameter 9 – Temperature representation in the
display
• In the factory setting the set or programmed
temperature (Comfort temperature 1, 2 or the Setback
temperature) is displayed.
• With the setting "measured temperature" the
measured room temperature is displayed. A
changeover to the set temperature is carried out
by turning the adjustment dial or pressing a button.
If required, the temperature can now be reset. The
display returns to the measured temperature after
approx. 3 seconds.
Due to the heat influence of the radiator the
"measured temperature" displayed at the radiator
controller can differ from the temperature measured
at another point in the room.
Parameter 12 – Optimization function
Without optimization (factory setting) the radiator
controller begins to heat up the room or lower the
temperature at the programmed time.
For example, in order to have a warm bathroom at 7:00,
the setpoint has to be brought forward. Otherwise the
room only starts heating at 7:00. However, the advanced
setpoint may lie too early so that heating is started far
earlier than necessary.
With optimization the radiator controller calculates
when to open the valve in order to achieve the desired
temperature at the set time.
• Optimum start
The room is heated up at the optimum moment in
order to reach the programmed temperature.
• Optimum start/stop:
The room is heated up at the optimum moment and
cooled down at an earlier moment.
°C
Optimum
Start
Without
Optimization
Setpoint
Parameter 13 – Temperature offset
Since the radiator controller measures the room
temperature in the area of the radiator, it is possible
that this temperature deviates from the temperature
measured at a different point in the room.
If, for example, 20 °C is measured in the room and
21.5 °C at the radiator, this effect can be compensated
by an offset of –1.5 °C.
Parameter 15 – Display of the valve position
When this parameter is activated (setting "1"), the
calculated valve position (0 to 100% opened) is
displayed momentarily.
The main display is shown again after approx. 3 minutes
or when the AUTO button is pressed.
Parameter 16 – Valve exercise day
If the radiator valve has not been opened once
completely within the period of 2 weeks, a self-test
(forced operation) is carried out. The radiator controller
opens the radiator valve briefly on the subsequent
Monday (factory setting) in order to prevent seizing.
The weekday for valve protection can be selected freely
Parameter 17 – Window open function
• If a window contact is connected, the parameter is set
automatically to "2" (cabled). The window function is
controlled by the window contact.
• If no window contact ist present, the parameter must
be set to "0" or "1".
13
Without
Optimum
Optimization
Stop
Setpoint