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INSTALLATIoN
Commissioning
4.3.2 Connecting remote control FET to heat pump
manager WPM or heat pump extension WPE
f Connect a free terminal on the WPM or on the WPE to the
FET terminals.
Connection
appliance
X1.2
WPM
X1.18
WPM
X3.2
WPE
X3.18
WPE
Example:
FET
CAN BUS
1
2
3
4
5
Do not connect
6
Do not connect
5. Commissioning
WARNING Electrocution
f Before working on the appliance, isolate it from
the power supply at the control panel.
Following disconnection from the power supply,
parts of the appliance may remain energised for
2 minutes until the inverter capacitors have dis-
charged.
Note
f observe the technical guide and the operating
and installation instructions for the appliances.
5.1
Heat pump cascade with a separate
control MCB
f Install all heat pumps and control units.
f Fill and vent the heat pumps.
f Isolate the control MCBs and load circuit MCBs from the
power supply.
f open the heat pumps so that you can access the integral
heat pump control unit IWS.
WP - Typ
ON
1
2
f In all heat pumps, switch the DIP switches on the IWS to
cascade operation.
10 |
Transmission
[kbit/s]
50
50
50
50
WPM
X1.2
+
a
a
-
GND
a
L
Low
H
High
a
3
4
Note
The following steps only apply to heat pumps posi-
tioned from second through to last in the cascade. The
first heat pump remains off.
f Activate the control MCB of the heat pumps specified
above.
1 Reset button
2 LEDs
f Press the RESET button on each IWS for 10 seconds until
the three LEDs show a steady light.
f Deactivate all control MCBs.
Heat pump 1
f Activate the control MCB for the heat pump and those for
the control units.
f open the menu on the WPM.
Menu
DIAGNoSIS / SYSTEM / BUS SUBSCRIBER
f Ensure that the number of the heat pump (e.g. "WP1") is
displayed with the IWS software version.
f open the menu on the WPM.
Menu
DIAGNoSIS / SYSTEM / HEAT PUMP TYPE
f Ensure that the heat pump is displayed with the heat
pump ID.
Heat pump 2
f Activate the control MCB for the heat pump.
f open the menu on the WPM.
Menu
DIAGNoSIS / SYSTEM / BUS SUBSCRIBER
f Ensure that the number of the heat pump (e.g. "WP2") is
displayed with the IWS software version.
f open the menu on the WPM.
Menu
DIAGNoSIS / SYSTEM / HEAT PUMP TYPE
f Ensure that the heat pump is displayed with the heat
pump ID.
2
1
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