44
– connect the OpenTherm (OT) communication cables to the
terminal (4)
– connect the communication cables that may be required to
use a phone dialler for remote management to the terminal
(5)
– connect the ModBus RS485 communication cables to the ter-
minal (6)
– connect the 24 V power cables (2 x 0.75 mm
2
) to the terminal
(7)
5
7
6
4
Fig. 67
– secure the base (2) to the wall using the screws (8) and the
plugs (9) supplied with the main control panel
2
8
9
Fig. 68
– refit the user interface (3) on the base (2), hooking the tab (1)
on correctly.
3
2
Fig. 69
m
CAUTION
Make sure that there is no excess cable between the
base (2) and the user interface (3).
5.14 Electrical connections and External con-
trols
m
CAUTION
Only qualified persons in compliance with the instruc-
tions contained in this manual are permitted to install,
commission and maintain this boiler. The installation
of this boiler must be in accordance with the relevant
requirements of the current Gas Safety (installation
and use) Regulation 1998, the local building regula-
tions, and I.E.E. wiring regulations.
The installer should make the following electrical connections:
– connecting the wired power cable, supplied with the boiler, to
the 230V~50Hz mains
– connecting the outdoor probe, supplied with the appliance, to
the specific connector on the boiler
– connecting the specific connector on the boiler to the termi-
nals on the main control panel.
m
CAUTION
It is compulsory:
– to use an omnipolar cut-off switch, disconnect
switch, in compliance with EN standards (contact
opening of at least 3 mm)
– if the power cable is to be replaced, that ONLY a
special cable is used with a factory produced re-
wired connector, ordered as a spare part and con-
nected by a professionally qualified person
– to connect the earth wire to an effective earthing
system (*)
– that before any work is done on the boiler, the mains
power is disconnected by setting the main system
switch to "OFF".
(*) Sime Ltd declines all responsible for any injury or damage
to persons, animals,or property as a result of failure to pro-
vide adequate earthing of the appliance.
d
DO NOT
Do not use water pipes for earthing the appliance.
The boiler is supplied with a mains cable. Connect the boiler to
a 230V -50Hz single phase power supply through a fused mains
switch, with at least 3 mm spacing between contacts, fused at
3 amps.
If this cable needs to be replaced, an original spare must be
requested from
Sime Ltd
.
DESCRIPTION
CODE
Power cable (dedicated)
6127260
