Installation Instructions
 Installation and Service Manual Upsilon-Series 
38
9.1 Operationalstatus
- Standby    Standby. Boiler is ready for operation.
- Vent.Phase  Ventilation stage
- Ignitionphase  Ignition stage
- BurnerlitCH  Burner active for heating
- BurnerlitDHW  Burner active for hot water
- CHT>Tset  Burner off on account of too high ow temperature CH
- OverrunCH  Overrun time pump over CH
- OverrunDHW  Overrun time pump over DHW
- Service    Boiler needs maintenance. Contact installer
- Frost    Burner active for frost protection
9.2 Operation
The keyboard  consists of a logical key allocation for menu control, conrmation, and 
correction and emission measurement. 
            Value increase / change
Emission measurement            Return/correction
      Backward          Forward
Reset*                Conrm selection
          Value decrease / change
* Reset only functions in case of an Error or Message. If reset is rapidly pressed over a 
short period of time, the device will block completely. Only loss of power (power switch) 
will restart the device completely.  Recommendation: First identify the fault by nding the 
fault code in the fault-code list in the problem-shooting chapter and solve the problem. 
The main switch is located on the right hand side of the keyboard. This switch controls 
the 230V power supply (L and N).
Standby
R
OK
-
+
R
OK
-
+
0-10Volt
Open-
Therm
On/Off
T3
DHW
230V~
AC
230V
out
230V~
AC
230V
out
L
N
L
N
L
N
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6
Error
signal
Heat
demand
signal
LPG
On/Off
1 2 3 4 5 6 7 8 9 10 11 12 13 14
T10
General
purpose
LWCO
NN
L
230V Pump / 3-WV.
L
230V Pump P3230V out230V~ AC
T4
Out
8X.44.08.00 / 05.11
L
N
230V DHW pump
Bus
8X.44.09.00 / 05.11










