0020244997_07 Installation and maintenance instructions
29
1.
Route the connection cables of the components to
be connected through the grommet provided on the
underside of the product on the left.
2.
Use strain reliefs.
3.
If required, shorten the connection cables.
30 mm
≤
4.
Strip the flexible ducts as shown in the figure. In doing
so, ensure that the insulation on the individual conduct-
ors 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 relevant 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
wiring diagram in the appendix.
7.12.3 Establishing the power supply
Caution.
Risk of material damage due to high con-
nected voltage.
At mains voltages greater than 253 V, elec-
tronic components may be damaged.
▶
Make sure that the rated voltage of the
mains is 230 V.
1.
Observe all valid regulations.
2.
Make sure that the nominal mains voltage is 230 V.
3.
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
4.
Do not interrupt the mains supply with a time switch or
programmer.
5.
Open the electronics box. (
6.
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).
7.
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.
8.
Route a three-core power supply cable that complies
with the relevant standards through the grommet and
into the product.
–
Power supply cable: Flexible duct
9.
Carry out the wiring. (
10.
Remove the supplied plug from the retainer in the elec-
tronics box and screw the plug onto the power supply
cable.
11.
Close the electronics box.
12.
Make sure that access to the power supply is always
available and is not covered or blocked.
7.12.4 Installing the product in a wet room
Danger!
Risk of death from electric shock!
If you install the product in a room with high
levels of moisture, e.g. a bathroom, observe
the nationally recognised technical standards
for electrical installations.
▶
Connect the product using a fixed con-
nection and an electrical partition with a
contact gap of at least 3 mm (e.g. fuses or
power switches).
▶
Use a flexible line for the power supply
cable, which is routed through the grom-
met into the product.
1.
Open the electronics box. (
2.
Detach the plug from the PCB slot for the power supply
(X1).
3.
Use a suitable, three-core power supply cable that
complies with the relevant standards.
4.
Carry out the wiring. (
5.
Close the electronics box.
6.
Observe the flue-gas connection that is required on a
room-sealed air/flue system. (
7.12.5 Connecting controls to the electronics
1.
Install the control if necessary.
2.
Open the electronics box. (
3.
Carry out the wiring. (
4.
Observe the wiring diagram in the appendix.
Condition
: Connecting a weather-compensated control or a room temperat-
ure control via eBUS
▶
Connect the control to the eBUS connection.
▶
Bridge the 24 V =
RT
connection (X100 or X106), if there
is not already a bridge.
Condition
: Connecting a low-voltage control (24 V)
▶
Remove the bridge and connect the control to the
24 V =
RT
connection (X100 or X106).
Condition
: Connecting 230 volt controller
▶
Connect the switched live supply of your 230 V RT to the
RT marked X1 position (besides LNPE). Do NOT connect
the 230 V to any other terminal e.g. not to X100.
Condition
: Connecting a limit thermostat for underfloor heating
▶
Remove the bridge and connect the limit thermostat to
the
Burner off
connection.
5.
Close the electronics box.
6.
For multi-circuit controls, change
D.018
from
Eco
(in-
termittently operating pump) to
Comfort
(continuously
operating pump). (
7.12.6 Connecting additional components
You can actuate an additional component with the aid of the
auxiliary relay that is installed, and you can actuate two other
components with the multi-functional module.
