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MAIN MENU settings
6 720 617 763 (2008/09)
6.3.1 Domestic hot water programme operat-
ing modes
Domestic hot water programmes operate differ-
ently according to the type of hot water system:
•
With combination boilers (boilers which pro-
duce domestic hot water instantaneously on
demand) the hot water programme switches
between the following operating modes:
–
On
: if the Eco button on the boiler is not lit,
domestic hot water is available very quickly
on demand (Comfort mode). Solid seg-
ments on the display indicate the period
for which the operating mode is active.
–
Off
: the built-in plate heat exchanger in the
boiler is not kept constantly hot (Eco
mode); as a result energy is saved. In Eco
mode, the hot tap has to be run for a short
while before the water becomes hot. Blank
segments on the display indicate the
period for which the operating mode is
active.
•
With boilers connected to a domestic hot
water cylinder, the hot water programme
specifies the desired water temperature
(specified temperature).
–
If the temperature measured in the domes-
tic hot water cylinder is below the speci-
fied temperature, the cylinder is re-heated.
–
Once the specified temperature is reached
(or exceeded), cylinder heating is stopped.
The segments on the display show
the periods for the following do-
mestic hot water temperature re-
quirements:
≥
50 °C – solid segments
≤
20 °C – no segments
other – blank segments
If the domestic hot water pro-
gramme changes from a higher to a
lower specified temperature, the
water in the cylinder will not imme-
diately cool to the lower tempera-
ture, i.e. water at a higher
temperature will continue to be
available for some time. However,
the cylinder will not be reheated
until the temperature falls below
the new, lower specified tempera-
ture.
