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When the winter/summer switch is set to the sum-
mer position, the regulator provides hot water only.
The temperature control knob becomes inactive; in
effect the heating flow temperature is regulated as a
function of the real outdoor temperature conditions.
This is achieved using the heating curves integrated
into the regulator itself.
The slope of this curve is preset to an average va-
lue, but can be corrected using the heating knob and
button C (both located on the control panel) to cor-
rect it to warmer or cooler (shifted parallel).
Once this parameter has been set, your heating sys-
tem becomes completely independent
1
and will pro-
duce room temperatures that are finely calculated to
give the optimum operating yield.
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The heating curve slope is factory-preset to 1.5 to
cater for heating by radiator.
This value needs to be changed to 0.8 when used
with floor heating:
- press the three buttons A, B and C simultaneous-
ly until a flashing
/
appears on the display, fol-
lowed by a
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.
The slope has now been corrected. It is however
possible to refine the following parameters accor-
ding to the precise needs of the installation (see
§ 2.2.2.3 - Chapter III - OPERATION) by increasing
or reducing the temperature setting by a few de-
grees.
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The factory settings correspond to heating by radia-
tor. The characteristics of the building (e.g. insula-
tion, heating surface) may mean that the setting
need adjusting in order to obtain a higher or lower
level of heating. This involves modifying the heating
curve parameters (see § 2.2.2.3 - Chapter III - OPE-
RATION).
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Adjust the heating knob to the right to obtain a war-
mer temperature setting (room temperature war-
mer) (max. + 3 °C) and to the left for a cooler setting
(max - 3 °C). Press button C until an F appears on
the display (about 3 s). The parameters have now
been adopted by the system.
If the radiator temperature setting needs to be in-
creased by more than 3 degrees, this operation can
be repeated, but first wait for 10 minutes to allow the
regulator time to register the new parameters pro-
perly. The inherent inertia in buildings and their hea-
ting systems means that it may take several hours
to react to a change, so it is better not to change this
parameter too often.
To return to the standard parameters, press the
three buttons A, B and C simultaneously until and
/
appears on the display.
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All the controls, settings, overrides and corrections
for heating flow/hot water temperatures can be car-
ried out using the room sensor.
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This version is designed to provide optimum com-
fort. As well as the functions linked to the outside
sensor described for the model above, the system
also has an room sensor.
1. The heating flow temperature varies automatically according
to the outside temperature
6
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10
20
30
40
50
60
70
80
90
100
20
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1 : QAC 31 Outside temperature sensor
2 : QAA 70 Room temperature sensor
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