Technical data

31Installation and maintenance instructions ecoCRAFT - 0020055744_03
7 Adapting the unit to the heating
system
The adaptation of the boiler to the heating installation is
carried out in the Diagnostic Mode. The operating con-
cept for the selection of the various parameters and
their setting is shown in Section 6.2. Some settings are
only intended for the heating engineer and can only be
called up after service code "17" has been entered at di-
agnostic point 97.
An overview of the diagnostic points that can be set can
be found in Table 7.1.
Diagnostic
point
Description Setting range Default setting
d. 0 Heating minimum load Settable values in kW Maximum output
in heating mode
d. 1 Water pump overrun time for heating mode 2 - 60 min 5 mins
d. 2 Maximum burner block time at 20 °C 2 - 60 min 20 min
d.17 Changeover from flow temperature regulation 0 = flow temperature regulation
1 = return temperature
regulation (e.g. for underfloor
heating)
0
d.18 Pump run-on mode 1 = comfort
3 = eco
1 = comfort
d.20 Maximum setting value of cylinder target temp. potentiometer 50 °C - 70 °C 65 °C
d.27 Switching of accessory relay 1 on the VR40 accessory 1 = circulation pump
2 = ext. pump
3 = cylinder charging pump
4 = flue non-return valve/
extractor hood
5 = external gas valve
6 = External error message
1 = circulation
pump
d.28 Switching of accessory relay 2 on the VR40 accessory 1 = circulation pump
2 = ext.pump
3 = cylinder charging pump
4 = flue non-return valve/
extractor hood
5 = external gas valve
6 = External error message
2 = ext.pump
d.54 Switch-on hysteresis relative to the current target value 0...-10 K -2 K
d.55 Switch-off hysteresis 0 ... 10 K 6 K
d.71 Maximum target value that can be set for the heating flow
temperature
40 °C - 85 °C 75 °C
d.72 Pump overrun after charging of a consumption water storage
tank controlled by the electronics (also warm start and charging
via C1/C2)
0 - 600 s 300 s
d.75 Maximum charging time for a storage without own controller 20 - 90 min 45 mins
d.77 Cylinder minimum load (cylinder charging output limiting) in kW Settable values in kW max. output
d.78 Cylinder charging temperature limiting (flow target temperature
in cylinder charging mode) in °C
75 °C - 85 °C 80 °C
d.84 Number of hours until the next maintenance activity (entry of
operating hours until the maintenance alert appears in the
display)
0 ... 3000 operating hours
"-" for off
"-" for off
d.87 Gas type setting 0 = natural gas 20 mbar 0
d.98 Option to enter telephone number that is displayed with a
maintenance alert
d.99 Selection of display language English
Table 7.1 Settable diagnostic points
Adapting the unit to the heating system 7