Setting The Operating Parameters For The Auxiliary System - Bosch Junkers NTC 10K Manual

Programming
▶ Press "OK".
▶ Use "ON" or "OFF" to set whether the floor standing boiler
should be used or not.
The display shows "dton".
4.1.2 Setting the operating parameters for the auxiliary
system
"dton" - Setting for temperature differential at which the
heat pump is switched on
Fig. 19
This parameter defines the temperature differential (between
the temperature measured in the cylinder and the temperature
at the internal indirect coil inlet) at which the heat pump starts
(T= T - T ).
cylinder pipe
The setting range is from 2 to 10 °C (the default setting is 6 °C):
▶ Press "OK".
▶ Set the value using the "+" and "-" buttons.
▶ Press "OK".
The value at which the heat pump starts is defined.
The display shows "dtoF".
"dtoF" - Setting for temperature differential at which the
heat pump stops
Fig. 20
24
This parameter defines the temperature differential (between
the temperature measured at the internal indirect coil and the
lowest measured temperature in the upper/middle range of the
cylinder) at which the heat pump is switched off
(T= T
pipe
This value is set as follows (the default setting is 10 °C):
• 4 to 15 °C for a solar heat system
• 4 to 20 °C for a floor standing boiler
▶ Press "OK".
▶ Set the value using the "+" and "-" buttons.
▶ Press "OK".
The value at which the heat pump stops is defined.
The display shows "tMIn".
"tMIn" - Setting for the lower limit of the water
temperature in the cylinder at which the heat pump starts
6720805338-07.1V
Fig. 21
This parameter defines the temperature at which the heat
pump starts.
Values between 20 and "T
setting is 35 °C).
▶ Press "OK".
▶ Set the value using the "+" and "-" buttons.
▶ Press "OK".
The value at which the heat pump starts is set.
6720805338-08.1V
- T ).
cylinder
The differential between "dton" and "dtoF" must
be at least 2 °C.
"dtoF" - "dton"  2 °C.
- 3 °C" can be selected (the default
set
If the appliance identifies that an auxiliary
system is active (solar heat system, floor
standing boiler or photovoltaic system) or there
is an external demand, "Syst" flashes on the
display.
6720805338-09.1V
6 720 808 239 (2013/09)