Bosch HPC 400 Operating Instructions Manual page 41

Hybrid systems
Heating system comprising heat sources which complement
one another with integrated optimisation control. Available as
separate units (e.g. heat pump with condensing appliance as
auxiliary heater). The system produces hot heating water to
heat a building and may also provide DHW heating.
Child lock
Settings in the standard display and in the menu can only be
changed if the child lock (key lock) is switched off
( page 11).
COOLING
A heat pump can both emit and absorb heat. It is therefore
possible to cool the water in the heating system. If the room
temperature rises above a certain value, it is maintained at the
set value in cooling mode.
Idle
When the system is idle, neither heating nor cooling takes
place. This status can occur between the heating and cooling
modes. The heat pump remains switched on, however.
Mixer
Assembly that automatically ensures that hot water can be
drawn from the taps at a temperature no higher than the
temperature set on the mixer.
Optimised operation
In optimised operation, automatic mode (the heating system
time program) is not active and the home is heated constantly
to the temperature set for optimised operation.
Reference room
The reference room is the room in the home where a room unit
has been installed. The room temperature in this room acts as
the control variable for the assigned heating circuit.
Switching time
A certain time at which the heating system starts to heat or hot
water is produced, for example. A switching time is a
component of a time program.
Smart grid
In a smart grid, power generators and loads are linked and can
communicate with each other in an electricity grid. This
additional networking allows output peaks and idle times to be
avoided more effectively by switching the loads on and off as
necessary to optimise grid utilisation.
Temperature of an operating mode
A temperature that is assigned to an operating mode. The
temperature is adjustable. See the explanations on operating
mode.
HPC 400
Thermal disinfection
This function heats up the hot water to a temperature in excess
of 65 °C. This temperature is sufficient to kill off pathogens
(e.g. legionella). Observe the anti-scalding safety instructions.
Holiday program
The holiday program enables the settings that would ordinarily
be applied to be interrupted for a number of days. After the end
of the holiday program, the programming unit resumes
operation with the settings that would ordinarily be applied.
Flow temperature
Temperature at which the heated water flows in the central
heating system from the heat source to the heating surfaces in
the rooms.
Water heater
A water heater stores large volumes of heated tap DHW.
Thereby, sufficient DHW is available at the draw-off points (e.g.
taps). This is a prerequisite for longer hot shower.
Time program for the heating system
This time program ensures automatic changeover between
operating modes at defined switching times.
Time program for hot water heating
This time program means that the system automatically
switches between the modes DHW, DHW reduced and Off at
fixed break points. It can be connected to the time program for
house heating ( chapter 5.3.2, page 20).
Time program for circulation
This time program ensures automatic operation of the DHW
circulation pump at defined switching times. Linking this time
program to the time program for hot water is recommended.
Hot water circulation pump
A hot water circulation pump allows the hot water to circulate
between the hot water heater and the taps. In this way you have
quick assess to hot water at the taps. The circulation pump can
be controlled with a time program.
Technical terms | 41
6 720 817 986 (2015/07)