Trianco TRISTAR OPTIMA JUNIOR K CB, Installation Instructions Manual, Page: 17 / 44

17
Always isolate the power supply to the
appliance before carrying out any work
on the electrical systems and
components.
Wiring to the boiler must conform with all
requirements of the current issue of the IEE Wiring
Regulations for fixed wiring to a stationary appliance,
and any local regulations which may apply. Failure to
do so may cause a hazard and will invalidate the
appliance warranty.
This appliance must be earthed.
Connection to the appliance should be via a fused
double-pole isolation switch, with a contact
separation of at least 3mm in all poles, and serving
only the boiler and system controls.
The cables to low power supply peripherals such as
remote controls, room thermostats, probes, etc. must
be double-isolated or follow a different path from
those to the main net.
After installation, or in the event of a fault, the
electrical system should be thoroughly checked for
fuse failure, short circuits, incorrect polarity,
resistance to earth, and earth continuity.
In the event of replacement, use a cable with the
same specification as that fitted.
- Supply – 230V, 50Hz, 150 Watts.
-
External fuse – 3 amp.
- Water protection IPX4D.
To gain access to the electrical components, remove
the two screws from the underside of the control
panel (
fig 17 ) and bring forward, pulling from the top.
Remove screws (marked ‘ A ’ on fig 18 ) from the rear
of the control panel and lift the fixed panel as shown
on
fig 19 .
On the System (SB) Model only, this item is supplied
separately in a bag within the boiler carton and is
used to connect external controllers to the boiler. See
wiring diagram (
section 5.6 , fig 24 ) for correct
placement. Using a crimping tool, attach the external
control wiring to the terminals provided and insert into
the plug provided (
fig 20 ).
Connect
as shown
5 ELECTRICAL
5.1 ACCESS TO ELECTRICAL PANEL
5.2 CONTROLS CONNECTION PLUG
FIG. 17
FIG. 18
FIG. 19
FIG. 20