6 Electrical installation
22
Installation and maintenance instructions geoTHERM 0020250180_00
6.5
Connecting controls and accessories to the
electronics
Danger!
Risk of death from live connections!
There is a risk of death from electric shock
when working in the heat generator's elec-
tronics box.
▶
Before working on the heat generator's
electronics box, pull out the mains plug
from the earthed plug socket.
▶
Secure the power supply against being
switched back on.
▶
Open the electronics box only when the
heat generator is disconnected from the
power supply.
Caution.
Risk of damage caused by incorrect in-
stallation.
Mains voltage at the incorrect plug terminals
on the ProE system may destroy the elec-
tronics.
▶
Do not connect a mains voltage to the
eBUS terminals (+/-).
1.
Open the electronics box. (
→
Page 18)
2.
Guide the connection cables of the components to be
connected (e.g. external components, outdoor temper-
ature sensor) through the grommet on the underside of
the product.
3.
Use strain reliefs.
4.
Shorten the connection cables as necessary.
5.
Only strip a maximum of 3 cm from the outer sheathing
of the flexible lines.
6.
Ensure the inner conductor insulation is not damaged
when stripping the outer sheathing.
7.
Only strip inner conductors just enough to establish
good, sound connections.
8.
Fit the stripped ends of the conductors with crimp pin
terminals to ensure a secure connection that is free
from loose strands and to thus prevent short circuits.
9.
Use a screwdriver to connect the ProE plug to the con-
trol's connection cables.
Note
Ensure that the conductors are securely
fastened to the plug terminals of the ProE
plug.
10. Connect the controls and accessories in accordance
with the wiring diagrams in the appendix.
11. If you install the control in the product (depending on
the basic system diagram, see appendix), remove the
panel from the product and insert the control into the
slot.
12. Plug the ProE plug into the relevant PCB slot of the
heat pump's main PCB.
13. Lay the lines correctly.
14. Use the strain reliefs to secure the cable in the elec-
tronics box.
15. Close the electronics box. (
→
Page 22)
6.6
Closing the electronics box
1
2
3
1.
Close the back wall
(2)
by pressing downwards on the
electronics box
(1)
.
2.
Ensure that all four clips
(3)
audibly click into the brack-
ets.
3.
Fold the electronics box upwards.
4.
Attach the casing. (
→
Page 22)
5.
Attach the front casing. (
→
Page 23)
6.7
Checking the electrical installation
▶
After the installation is complete, check the electrical
installation by checking that the established connections
are secured correctly and are sufficiently insulated.
6.8
Completing installation
6.8.1
Checking the system pressure and leak-
tightness
1.
After completing the installation, carry out a check of
the system.
2.
Start up the heat pump in accordance with the relevant
operating instructions.
Checking the water pressure and checking for wa-
ter leaks
3.
Check the heating installation for leaks.
6.8.2
Attaching the casing to the heat pump
1.
Hang the casing on the upper hooks for the heat pump.
2.
Use two screws to secure the casing to the front side of
the heat pump.
