Commissioning; Bus Initialisation; System Configuration Through Parameter Settings; Reset Options - STIEBEL ELTRON WPM Bedienungsanleitung

INsTALLATIoN

Commissioning

7. Commissioning
Only qualified contractors may carry out any adjustments to the
heat pump manager (see list in the chapter "Settings / Setting pa-
rameters" in the heat pump manager commissioning instructions),
commission the device and instruct the system user in its use.
Commissioning must be carried out in accordance with these in-
stallation instructions and the operating and installation instruc-
tions of all components belonging to the heat pump system.
Note
Our customer support can assist with commissioning,
which is a chargeable service.
7.1

Bus initialisation

Connecting the bus cable not only establishes the electrical con-
nection for system communication. As part of commissioning,
connecting the bus cable will also assign the appliance-specific
address required for switching the heat pump.
7.1.1 General information
Note
The control panel for each heat pump provides space for
the connection of two 3-core BUS cables, i.e. the BUS
cable between the heat pumps is wired in parallel.
Note
In a cascade, heat pumps designed to heat DHW must
always be initialised first. The remaining heat pumps can
then be connected in any order.
Note
All necessary sensors must be connected before the volt-
age is connected to the WPM. Any sensors connected later
will not be recognised by the WPM.
Example: No DHW parameters, programs or tempera-
tures are displayed if the DHW cylinder sensor was not
connected at the time of commissioning. No values can
be programmed for these parameters.
Note
If incorrectly initialised, all IWS (internal heat pump
controllers) must be reset and reinitialised (see chapter
"Reset options / Reinitialising the IWS").
Note
The entire heat pump system will be shut down if the
BUS cable between the WPM and the heat pump is in-
terrupted.
7.1.2 Sequence for BUS connection
For the bus connection it is essential that you carry out the steps
below in the order described:
f Connect the WPM to the mains voltage. f
f Connect the WPE (if installed) to the mains voltage. f
f Connect the internal heat pump controller (IWS) to the mains f
voltage.
20 | WPM
f Leave the mains voltage to the compressor and emergency/ f
booster heater switched off, so that the heat pump does not
start up uncontrolled during initialisation.
In the DIAGNOSIS / SYSTEM menu, all connected BUS subscrib-
ers and their respective software versions are shown under BUS
SUBSCRIBER.
After completing initialisation of the heat pump, use the DIAG-
NOSIS / SYSTEM menu under HEAT PUMP TYPES to check that all
connected heat pumps are being displayed.
7.2 System configuration through parameter
settings
If the system is operating incorrectly, you should first check the
parameter settings (see chapter "Settings / Parameter summary"
in the commissioning instructions for the heat pump manager).
7.3

Reset options

7.3.1 Reinitialising the IWS
This reset should be performed if the system was commissioned
or initialised incorrectly.
To do so, proceed as follows:
f Switch OFF the mains voltage to the WPM. f
f Switch OFF the mains voltage to the WPE (if installed). f
f Switch OFF the mains voltage to the heat pump. f
f Disconnect the BUS connections. f
f Switch ON the mains voltage to the heat pump. f
f Hold the reset key until the two outer LEDs are constantly f
illuminated.
f Release the reset key. The IWS has now been reset and is f
ready for renewed initialisation.
BA
f Switch the mains voltage to the components back ON. f
f Carry out BUS initialisation (see chapter "Commissioning / f
BUS initialisation").
f Reset the system-specific parameters for the WPM and WPE. f
7.3.2 Heat pump reset
This reset should be performed if a heat pump-specific fault or
hardware fault occurs five times in the space of two hours' runt-
ime.
f Activate the HEAT PUMP RESET parameter in the COMMIS- f
SIONING menu.
The fault is cleared. The heat pump is ready to be returned to use.
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