Worcester R 30 HE plus combi, Инструкции по установке и обслуживанию, Страница: 31 / 96

6 720 611 400 GB (03.11)
Individual settings
31
Setting service functions
Only the service functions that can be set are displayed.
B Press any button to activate the main menu.
B Press or button until the arrow cursor is
pointing to Settings .
B Press the button.
B Press oder button until the arrow cursor
is pointing to Service .
B
Press the button.
The cursor is pointing to
Display service parame-
ters
.
B Press and hold the button (for about 5 sec-
onds) until the display shows
Adjust service
parameters and the first service function to be set,
e.g. 2.0, Operating mode . If a fault has occurred,
the display will show 0.0 and the last fault.
B Press the or button until the desired
service function is displayed.
B Press the button.
The first line of the display shows
Change value
.
B
Use the or buttons to enter the required
setting.
B
Press the button.
The text display shows
ATTENTION Store set-
tings?
.
B
Press or to select yes or no .
B
Press to confirm your selection.
The text display shows Please wait ... ..., and the
service function is then displayed with the new set-
ting.
B
Press the or button until the next func-
tion you wish to change is displayed.
-or-
B Press the button to exit the menu.
7.2.2 Setting the anti-cycle time
(Service Function 2.4)
This service function is only active if Service Function
2.7, automatic anti-cycle time, is deactivated.
The anti-cycle time can be set to between 0 and 15 min-
utes (is factory set to 3 minutes).
If the setting 0 is entered, the anti-cycle time is inactive.
The shortest possible anti-cycle time is 1 minute (rec-
ommended for single-pipe and hot-air heating systems).
7.2.3 Setting the maximum CH flow tempera-
ture (Service Function 2.5)
The maximum CH flow temperature can be set to
between 35 °C and 88°C (factory setting).
7.2.4 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, 100 %.
B
Look up heating output in kW and corresponding
code number on the settings tables for heating out-
put (see page 47).
B Enter the code number on the text display module.
B
Measure the gas flow rate and compare with the fig-
ures specified for the code number shown. If differ-
ent, correct code number.
7.2.5 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).
7.2.6 Variable pump settings
(Service Function 7.0)
The pump speed varies automatically to match the
water flow requirement of the system determined by the
position of thermostatic radiator valves. An automatic
by-pass must not be used.
The Service Function 7.0 is factory set to 4 which will
accommodate the majority of heating systems.
Information on the re-settings of this functions can be
found in the Service Booklet for the Engineer
number 7-181-465-349.
7.3 Setting the gas/air ratio
The appliance is set at the factory and adjustment to the
CO
2
settings (gas/air ratio) is only required where the
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 8.
i
The full rated heat output is still available
for hot water or charging the hot water cyl-
inder even if the heating output has been
limited.