22
Installation and maintenance instructions EASICOM 3 0020239562_04
2.
Use strain reliefs.
3.
If required, shorten the connection cables.
30 mm
≤
4.
Strip the flexible line as shown in the figure. In doing so,
ensure that the insulation on the individual conductors
is not damaged.
5.
Only strip inner conductors just enough to establish
good, sound connections.
6.
To avoid short circuits resulting from loose individual
wires, fit conductor end sleeves on the stripped ends of
the conductors.
7.
Screw the respective plug to the connection cable.
8.
Check whether all conductors are inserted mechanic-
ally securely in the plug terminals. Remedy this if ne-
cessary.
9.
Plug the plug into the associated PCB slot; see the wir-
ing diagram in the appendix.
7.9.4
Establishing the power supply
1
1.
Observe all valid regulations.
2.
Make sure that the rated voltage of the mains is 230 V.
3.
Do not interrupt the mains supply with a time switch or
programmer.
4.
Set up a fixed connection and install a 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 3mm 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.
6.
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
7.
Open the electronics box. (
8.
Observe the routing of the power supply cable
(1)
in the
electronics box in order to guarantee that there is no
strain.
≤ 30 mm
N
L
X1
230V~
RT
9.
Carry out the wiring. (
10. Screw the supplied plug to a three-core power supply
cable that complies with the relevant standards.
11. Connect the plug for the power supply cable.
12. Make sure that access to the power supply is always
available and is not covered or blocked.
13. Close the electronics box. (
7.9.5
Connecting controls to the electronics
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
Safety thermostat for
floor-standing heater
2
24 V control
3
eBUS control or radio
receiver unit
4
Outdoor temperature
sensor, wired
1.
Open the electronics box. (
2.
Carry out the wiring. (
Summary of Contents for EASICOM 3 24c
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