Function Test; Operating Temperatures; Settings; Overview Of Control Elements And Symbols - Bosch Compress Hybrid 7000i AW Installer's Manual

Settings

7.3

Function test

7.3.1

Operating temperatures

The operating temperature check must be performed in heating mode
(not in DHW or cooling mode).
For optimum system operation, the flow rate in the heat pump and
heating system must be monitored. This check should be performed
after 10 minutes heat pump operating time and during high compressor
heating output.
The temperature differential for the heat pump must be set for the
different heating systems.
▶ With underfloor heating system: set a temperature difference of 5 K.
▶ With radiators: set a temperature difference of 8 K.
These settings are optimal for the heat pump.
Check the temperature differential at high compressor heating output:
▶ Open the diagnosis menu.
▶ Select Monitored values.
▶ Select Heat pump.
▶ Select Temperatures.
▶ Read the primary flow temperature (heat transfer medium off, sensor
TC3) and return temperature (heat transfer medium on, sensor TC0)
in heating mode. The flow temperature must be higher than the
return temperature.
▶ Calculate the difference TC3–TC0.
▶ Check whether the difference corresponds to the delta value
set for heating mode.
If the temperature differential is too large:
▶ Vent the heating system.
▶ Clean filters / strainers.
▶ Check pipe dimensions.
The compressor is preheated before starting. This can take up to
2 hours, depending on the outdoor temperature. The prerequisite for
starting is that the value recorded by the temperature sensor of the
compressor (TR1) is 10 K higher than the temperature sensor at the
supply air terminal device (TL2). The temperatures are displayed in the
diagnosis menu of the control unit.
▶ Test active components of the system.
▶ Check whether the start condition for the heat pump has been satisfied.
▶ Check if there is a heating or hot water demand.
-or-
▶ Draw off DHW or increase the heating curve to generate demand
( instructions for control unit).
▶ Check whether the heat pump starts.
▶ Make sure that no alarms are currently active.
-or-
▶ Troubleshooting.
▶ Check the operating temperatures ( instructions for the control unit).
24
8 Settings
The user guide for the control unit contains a comprehensive description
of all functions and settings
8.1

Overview of control elements and symbols

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fav
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Fig. 35 Control elements
[1] fav key: calls up the favourites menu
[2] extra DHW key: starts once-only DHW charging
[3] DHW key: set the operating mode for DHW heating
[4] menu key: main menu (press briefly)
[5] info key: info menu or further information about the
current selection
[6] d key: returns to previous menu or discards a value
(press briefly); returns to the standard display (hold down)
[7] Selector: select (turn) and confirm (press)
If the display lighting is off, only the lighting goes on when the selector is
pressed for the first time. When the selector is turned and another
control element is pressed at the same time, the lighting is switched on
in addition to the effect described. The descriptions of the steps to be
carried out by the operator in these instructions always assume that the
lighting is activated. If no control element is actuated, the lighting turns
off automatically (after approx. 30 s with the standard display, after
approx. 30 min in the menu, after 24 h in the event of a fault).
2
1
5
7
Fig. 36 Symbols in the standard display (example display)
The standard display refers only to the displayed heating circuit.
Changing the required room temperature in the standard display only
affects the heating circuit displayed.
Compress Hybrid 7000i AW – 6721833053 (2020/09)
menu
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info
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6 720 811 136-901.1O