Buderus Logamax plus Installation Instructions Manual page 40

8 Operation
– The manual operation mode enables the boiler to be
operated manually for a longer period. Use this mode
when the control system has not been installed yet or is
out of order. See table 10, "Manual operation", page 43.
"Service" button (pos. 4)
The "Service" button is used to display the current space
heating water temperature, the current system pressure etc.
Service Tool connection (pos. 5)
For further information please contact Buderus.
LED "Burner operation" (pos. 6)
The LED "Burner operation" lights when the burner of the
boiler is active and is extinguished when the burner is
switched OFF.
The LED "Burner operation" indicates the burner status.
LED Status
ON Burner operational Boiler water is being heated.
OFF Burner off
LED "Burner operation"
Table 6 Meanings of
LED "Central heat demand" (pos. 7)
The LED "Central heat demand" lights when there is a heat
demand and is extinguished when the heat demand is no
longer present.
Space heating water temperature knob (pos. 8)
The Space heating water temperature knob is used to set
the upper space heating water temperature limit.
The unit is °F.
Display (pos. 9)
The heating system display values, display settings and
display codes can be read out from the display.
If a fault occurs the display will immediately show the
accompanying fault code. The fault code flashes if a locking
fault has occurred.
DHW temperature knob (pos. 10)
The DHW temperature knob is used to select the required
temperature of the hot water in the hot water cylinder.
The unit is °F. See table 16, page 59.
LED "DHW demand" (pos. 11)
The LED "DHW status" lights when there is a DHW request
and is extinguished when the DHW demand is no longer
present.
40 Logamax plus GB162-80 kW/100 kW - Subject to modifications resulting from technical improvements!
Explanation
The space heating water
temperature has reached the
target value and there is no heat
demand.
indications