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Commissioning
6.3.7
Setting summer mode
The pump and consequently the heating are switched off in summer
mode. The DHW supply and also the power supply for heating controls
and timer remain active.
NOTICE
Risk of the system freezing.
Frost protection is not available in summer mode.
▶ If there is a risk of frost, exit summer mode ( Chapter 7.1).
To activate summer mode:
▶ Press the ( key.
▶ Keep pressing the arrow key until
▶ Press the OK key to save. Otherwise the setting will be saved
automatically after 3 seconds.
] is permanently displayed.
Further notices can be found in the operating instructions for the heating
control.
6.3.8
Manual mode
Manual mode can be enabled to operate the boiler independent of
controls, should there be a technical issue with time and temperature
controls fitted.
To activate manual mode:
▶ Press and hold the ( key for 5 seconds.
▶ Check the flow temperature shown and adjust if necessary.
– The flow temperature will be shown in between two hyphens,
indicating manual mode.
Fig. 65 Manual mode shown on display
Manual mode should be used for a limited time only until the time and
temperature controls are fixed.
▶ To disable Manual Mode press and hold the ( key for 5 seconds.
6.4
Chimney sweep mode
You have 30 minutes to take your measurements or to check or adjust the
appliance settings. After this time the appliance returns to normal
operation.
When running in the chimney sweep mode, the appliance will operate
both the central heating and the domestic hot water circuits. This is to
allow sufficient time for this part of the commissioning procedure. It will
be necessary to run sufficient hot water through the domestic hot water
circuit to ensure that the appliance will not overheat whilst in chimney
sweep mode.
Whilst the appliance is in chimney sweep mode, the chimney sweep
symbol ( C ) will be displayed on the screen.
44
appears in the display.
0010034240-001
6.4.1
Setting the appliance to maximum
▶ Press C for at least 5 seconds.
– The appliance enters chimney sweep mode and automatically
enters maximum output.
– The display shows the maximum percentage of the power 100%
alternating with the flow temperature.
– The appliance will ramp up to maximum output in approximately
30 to 35 seconds.
6.4.2
Setting the appliance to minimum
Whilst the appliance is already in chimney sweep mode - maximum
output.
▶ Press the button to set the appliance to minimum output.
– The display shows the minimum percentage of the power
alternating with the flow temperature.
– The appliance will take approximately 30 to 35 seconds to ramp
down to minimum output.
– Allow the appliance to stabilise at minimum output.
– To switch to maximum output again press
6.4.3
Exiting chimney sweep mode
To exit the chimney sweep mode:
▶ Press
and the appliance will return to normal operation.
– If left in the chimney sweep mode the control will return to normal
operation after 30 minutes.
6.5
Checking gas inlet pressure
Measuring the inlet pressure
▶ Switch off the appliance and close the gas isolator.
▶ Unscrew the screw on the test nipple for the gas supply pressure and
connect a pressure gauge.
1
Fig. 66 Checking the gas supply pressure
[1]
Gas valve
▶ Open the gas isolator and switch on the appliance.
▶ Ensure that there is heat transfer by opening the radiator valves and
any zone valves fitted. A hot water tap can also be opened for
additional heat transfer.
▶ Set the appliance running at maximum output in chimney sweep
mode ( 6.4.1 "Setting the appliance to maximum").
▶ Check the required gas supply pressure according to following
section Table 25 "Allowed mbar pressure drop".
Greenstar 1000 – 6721835943 (2023/08)
T10
0010048763-001
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