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Automatic Functions; Window Function; Valve Protection; Frost Protection - Honeywell HR 40 Installation And Operating Instructions Manual

Radiator controller
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Automatic functions

Window function

If you open a window so that the temperature at the HR 40 drops sharply for
more than 3 minutes, the HR 40 closes the radiator valve in order to save
energy. The display then shows the message
.
When the temperature rises again – but no later than after 30 minutes – the
HR 40 will resume normal operation.
Note: The window function can be ended at any time by pressing the
PROG
button or by turning the adjustment dial.

Valve protection

In order to protect the valve it is opened every Monday at midday.
cycl is displayed.

Frost protection

If the temperature drops below 4 °C, the HR 40 opens the radiator valve until
the temperature rises above 6 °C again. In this way, the HR 40 prevents the
radiator from freezing. The
symbol flashes as soon as frost protection is
activated.
Note: Frost protection only works with the operating unit attached.

Summer/winter time

The HR 40 will switch to summer or winter time automatically.

Battery change display

When the BaTT display flashes, the HR 40 remains functional. However,
you should change the battery as soon as possible.
If BaTT is displayed permanently, the HR 40 is inactive and the radiator
valve is opened (frost protection).
9

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