Setting The Operating Parameters For The Auxiliary System - Junkers 7 736 503 876 Mode D'emploi

▶ Press "OK".
▶ Use the "+" or "-" keys and select "OFF", "Sol" or "Boil",
according to which type and whether an auxiliary system is
being used or not:
– solar "Sol"
– boiler "Boil"
▶ Press "OK".
Auxiliary system selected.
4.1.2 Setting the operating parameters for the auxiliary
system
"delt" - Setting for temperature differential at which the
heat pump (sol system) or the electric heater (boil system)
is switched on
Fig. 18
This parameter defines the temperature differential between
the temperature measured in the cylinder and the temperature
at the coil inlet at which the heat pump or the electric heater
starts (T=T - T ).
cylinder pipe
The value can be set between 2 and 10 °C
(the default setting is 6 °C).
▶ Access the "Coil" menu.
▶ Press "ok".
▶ Use the "+" or "-" keys and select "delt".
▶ Press "OK".
▶ Set the value using the "+" and "-" buttons.
▶ Press "OK".
The desired value is now set.
6 720 821 590 (2019/10)
"tMin" - Setting the lower limit of the water temperature in
the cylinder at which the heat pump starts
Fig. 19
This parameter defines the temperature of the water in the
cylinder below which the heat pump is activated, when the
solar auxiliary system is selected.
The value can be between 20 and "T
(the default setting is 35 °C).
▶ Access the "Coil" menu.
▶ Press "ok".
▶ Use the "+" or "-" keys and select "tmin".
▶ Press "OK".
▶ Set the value using the "+" and "-" buttons.
▶ Press "OK".
The desired value is now set.
When the device detects that an auxiliary
system is operating (solar system, boiler or
photovoltaic system) "Syst" flashes on the
display.
Fig. 20 Auxiliary system activated
Programming
6720805338-09.1V
- 3 °C"
set
6720805338-12.1V
11