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16 | Commissioning
7.1
Displays
1
2
3
Fig. 19 Displays
[1]
Burner operation
[2]
Fault display/standby mode display
[3]
Heating mode active
[4]
DHW heating active
[5]
Summer mode active
[6]
Service Mode
[7]
Temperature display (in °C)
7.2
Before commissioning
NOTICE: Commissioning without water will destroy the
appliance.
▶ Only operate the appliance once it has been filled with
water.
▶ Adjust pre-charge pressure of expansion vessel to static head of the
heating system ( page 10).
▶ Open the automatic air vent valve (leave open) ( Fig. 18, [7],
page 15).
▶ Open all system radiator valves.
▶ Open the heating flow valve and heating return valve ( Fig. 18, [6]
and [2], page 15).
▶ Fill the heating system to 1 - 2 bar and close the fill valve.
▶ Bleed radiators.
▶ Top up heating system to pressure of 1 - 2 bar.
▶ Check that the gas type specified on the type plate matches that of the
gas supply (see Fig. 24).
▶ Open the gas valve ( Fig. 18, [4]).
▶ Plug in the power plug: the appliance enters standby mode.
7.3
Switching the appliance on/off
Initial switching on/setting the fan stage
At the factory, fan stage 0 is selected, i.e. fan and burner will not start.
▶ Start the appliance at the standby key (Fig. 20).
The following fault display is shown:
Fig. 20
Set fan stage:
▶ Determine a suitable fan stage.
▶ Hold down "Back", + and – at the same time until L.1 is shown on the
display.
▶ Press + until L.2 is shown on the display.
▶ Press OK to make settings in menu 2.
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4
5
6
7
6 720 806 640-05.2O
6 720 806 640-18.3O
▶ Press + or – to call up service function 2.b.d ( page 21).
▶ Press OK to switch to the service function.
The value flashes on the display.
▶ Press + or – to set the required value.
▶ Hold down OK until the selected service function appears on the
display.
The display switches to the selected service function automatically.
▶ Press standby.
The boiler returns to standard mode.
Switching on
▶ Start the appliance at the standby key.
The display shows the heating water flow temperature.
Switching off/standby mode
▶ Shut down the appliance at the standby key.
Only the warning symbol continues to be displayed.
▶ If the appliance is to be switched off for a longer period of time:
observe correct frost protection procedures ( chapter 7.8).
Fig. 21
The appliance has an anti-seizing function which
prevents the heating circuit pump and the 3-way valve
seizing up following long periods of inactivity.
The anti-seizing function remains active during standby
mode.
7.4
Setting the maximum flow temperature
The maximum flow temperature can be set between 40 °C and
approx. 82 °C. The current flow temperature is shown on the display.
▶ Keep pressing – until the
▶ Press OK.
The set maximum flow temperature is displayed.
▶ Press + or – to set the required maximum flow temperature.
▶ Press OK to save the setting.
The display shows the current flow temperature.
You can find typical maximum flow temperatures in Tab. 10.
When selecting . ., heating mode is disabled (
appears on the display, summer mode).
When the burner is active in heating mode, the
burner symbol appear on the display.
Flow temperature
. . (
symbol appears)
Approx. 75 °C
approx. 82 °C
Table 10 Maximum flow temperature
ok
6 720 806 464-06.2O
symbol appears on the display.
symbol and the
Sample application
Summer mode
Radiator heating system
Convector heating system
Gaz 6000 W
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