Instruction Manual

A radio mast symbol with no radio waves indicates that the
HRT4-ZW has not been signed on to enable it to communicate
with the ASR-ZW receiver. In this case you may wish to
contact the Installer as the indication is that the product has
not been commissioned when the installation took place. Alternatively see the
Z-Wave pairing instructions on page 10.
A flashing radio wave indicates a loss of communication. This
may be temporary and can often be restored by turning the
thermostat dial and increasing or decreasing the temperature
to make the thermostat switch. If this has no effect please see
Z-Wave pairing instructions on page 10.
Pressing the temperature setting dial will
allow the user to check the current actual
measured room temperature which will be
displayed for approx 7 seconds before
returning to the set temperature.
The aerial symbol complete with radio wave
symbols in the display of the HRT4–ZW
thermostat indicates that it is communicating
satisfactorily with the ASR-ZW receiver.
Further information on how the thermostat operates is contained in the
'Explanation for householders' that precedes this section.
To adjust the required temperature setting turn the dial anti
clockwise to decrease it and clockwise to increase it. When
the thermostat is in the 'call for heat' condition a flame symbol
will appear in the display.
The display will show the required temperature setting and
can be adjusted in increments of 1°C.
User Instructions
The HRT4-ZW thermostat uses the latest control
technology to provide extremely accurate
temperature control which will help to keep your
energy usage as low as possible without affecting
your comfort levels. In fact comfort levels may well
be improved as the control accuracy should
ensure that the room does not 'overheat' before
switching off.
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