Installation 7
0020300875_01 Energy
7
Installation and maintenance instructions
27
7.
Only strip inner conductors just enough to establish
stable connections.
8.
To avoid short circuits resulting from loose individual
wires, fit conductor end sleeves on the stripped ends of
the conductors.
9.
Screw the respective plug to the connection cable.
10. Check whether all conductors are inserted mechanic-
ally securely in the plug terminals. Remedy this if ne-
cessary.
11. Plug the plug into the associated PCB slot.
–
In doing so, observe the wiring diagram in the ap-
pendix.
7.9.5
Establishing the power supply
1.
Make sure that the rated voltage of the mains is 230 V.
2.
Provide one common power supply for the boiler and
for the corresponding control:
–
Power supply: Single-phase, 230 V, 50 Hz
–
Fuse protection:
≤
3 A
3.
Do not interrupt the mains supply with a time switch or
programmer.
4.
Connect the product using a fixed connection and an
electrical partition with a contact gap of at least 3 mm
(e.g. fuses or power switches).
5.
Isolation should preferably be by a double pole
switched fused spur box having a minimum contact
separation of 3 mm on each pole. The fused spur box
should be readily accessible and preferably adjacent to
the boiler. It should be identified as to its use.
≤ 30 mm
N
L
X1
230V~
RT
N
L
RT
2
1
6.
Connect the cables.
7.
Screw the supplied plug
(2)
to a three-core power sup-
ply cable that complies with the relevant standards.
8.
Observe the routing of the power supply cable
(1)
in the
electronics box in order to guarantee that there is no
strain.
9.
Insert the plug into the bush in the electronics box.
10. Make sure that access to the power supply is always
available and is not covered or blocked.
7.9.6
Connecting controls to the electronics
1.
Ensure that the product is voltage-free.
X2
X22
X41
– +
24V=
RT
BUS
Burner
off
X106
BUS
24 V
BUS
RT
B.of
f
B
ur
ner
of
f
R
T
24V
=
-
+
B
U
S
1
4
3
2
1
Limit thermostat for
underfloor heating
2
24 V control
3
eBUS control or radio
receiver unit
4
Outdoor temperature
sensor, wired
2.
Connect the cables.
3.
Connect the individual components depending on the
installation type.
Condition
: If installing a multi-circuit control.
▶
Change the pump mode
(d.18)
from Eco (intermittent
pump operation) to Comfort (continuous pump opera-
tion).
Condition
: If you are connecting a control (230 V).
≤ 30 mm
N
L
X1
230V~
RT
▶
Connect the control to the main plug.
BUS
RT
B.of
f
Burner
of
f
RT
24V =
-
+
BUS
▶
Remove the bridge from the 24V=RT plug.
4.
Close the electronics box.