Setting The Maxim Ch Flow Temperature (Service Function 2.5); Setting The Switching Difference (Service Function 2.6); Setting The Heating Output (Service Function 5.0); Constant Hot Water Cycle Time (Service Function 6.8) - Worcester GREENSTAR HE combi Series Installation And Servicing Instructions

6.2.4 Setting the maxim CH flow temperature
(Service Function 2.5)
The maximum CH flow temperature can be set to
between 35˚C and 88˚C (factory setting).
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 K. The adjustment range is 1 to 30 K (is
factory set to 0 K). The minimum CH flow temperature
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 full rated heat output is still available
i
for hot water or charging the hot water cyl-
inder even if the heating output has been
limited.
The factory setting is the max. rated heat output.
B Press and hold the
ously until the display shows = =.
The and buttons will light up.
Fig. 38
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. 39
6 720 610 576 GB (03.02)
and buttons simultane-
6 720 610 332-50.1O
until the display
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 45).
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!
B Press and hold the
ously until the display shows [ ].
The heating output is now stored.
Fig. 40
B Return the temperature controls
original positions.
The display will revert to the CH flow temperate.
6.2.7 Constant hot water cycle time
(Service Function 6.8)
In Comfort mode "ECO light off" , the hot water inside
the appliance is held constantly at the set temperature.
For that reason, the appliance switches on if the water
temperature falls below a certain temperature. In order
to prevent it switching on and off too frequently, the
constant hot water cycle time service function allows
you to set the minimum period between switching off
and on again. This function has no effect on normal
demand for hot water and relates only to the constant
hot water function in Comfort mode.
The cycle time can be set to any period between 20 and
60 minutes (is factory set to 20 minutes).
6.3

Setting the gas/air ratio

The appliance is set at the factory and adjustment is not
necessary.
Individual settings
until the display
and buttons will flash.
and buttons simultane-
6 720 610 332-52.1O
and to their
29