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6.2.5
Setting the switching difference
(Service Function 2.6)
If the appliance is connected to an out-
i
side-temperature controlled programmer,
the programmer sets the switching differ-
ence.
It does not need to be set on the appli-
ance.
The switching difference is the permissible divergence
from the specified CH flow temperature. It can be set in
increments of 1°C. The adjustment range is 1 to 30°C
(is factory set to 0°C). The minimum CH flow temper-
ature is 30°C.
6.2.6
Setting the heating output
(Service Function 5.0)
The heating output can be set to any level between min.
rated heat output and max rated heat output to limit it to
the specific heat requirements.
The factory setting is the max. rated heat output.
B Set the room thermostat and thermostatic radiator
valves to max. temperature.
B Press and hold the
ously until the display shows = =.
The
and
buttons will light up.
Fig. 40
B Turn the temperature control
shows 5.0.
After a short delay, the display then shows the set
heating output in percent.
6 720 610 332-51.1O
Fig. 41
B Refer to the settings tables for heating and cylinder
charging output to obtain the relevant code for the
desired heating output in kW (see page 43).
B Turn the temperature control
shows the desired code number.
The display and the
B Measure the gas flow rate and compare with the fig-
ures specified for the code number displayed. If fig-
ures do not match, adjust the code number!
6 720 611 443 GB (05.04)
and
buttons simultane-
6 720 610 332-50.1O
until the display
until the display
and
buttons will flash.
B Press and hold the
ously until the display shows [ ].
The heating output is now stored.
Fig. 42
B Return the temperature controls
original positions.
The display will revert to the CH flow temperate.
6.3
Setting the gas/air ratio
The appliance is set at the factory and adjustment to the
CO
settings (gas/air ratio) is only required where the
2
appliance has been stripped down and assembled or if
the fan, burner or gas valve are replaced or the appli-
ance has been converted to a different gas type, see
section 7.
Individual settings
and
buttons simultane-
6 720 610 332-52.1O
and
to their
29
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