12
Only personnel from
r
’s Technical Assistance Service
or professionally qualified heating engineers are allowed
to access components inside the control panel.
Proceed as follows if you need to access components
inside the control panel:
- Turn the system OFF at the mains power switch.
- Tilt the panel (1) forwards. Remove the 2 fixing screws
(2) and remove the top cover (3).
3
2
1
b
The following instructions are mandatory.
1 - Use a multi-pole magnetic thermal trip switch
and disconnector conforming to IEC-EN stan-
dards (with a contact gap of at least 3 mm).
2 -
Respect the L (Phase) - N (Neutral) polarity.
Keep the ground wire about 2 cm longer than the
power wires.
3 - Use cables with a cross section of 1.5 mm2 or
more, complete with end terminals.
4 -
Always refer to the electrical wiring diagrams
in this manual when performing any electrical
work.
5 -
Make sure the appliance is connected to an
effective ground.
- Proceed as instructed in the “ACCESSING INTERNAL
COMPONENTS” section above to access the terminals
inside the control panel.
- Route the control panel power cables and all the cables
to be connected to the ‘load side’ of the main board
through the cable grommets (A) in the bottom of the
control panel.
- Route the cables to be connected to the ‘sensor side’
of the main board through the cable grommets (B) and
(C) in the bottom of the control panel.
- Route all these cables through the cable grommets in
the casing of the boiler, or use the cable holes for PG
type cable clamps or spiral cable duct fittings.
- Connect up the 230V mains power, using the fixed
‘Mamut’ terminals, referring to the wiring diagram on
the next page and to the WIRING DIAGRAMS chapter.
- Connect up the individual 230V and +12Vdc devices,
referring to the mounting diagram on the next page and
to the WIRING DIAGRAMS chapter.
- Secure the cables to the casing of the boiler so that
they cannot be accidentally pulled out.
a
It is strictly forbidden to use fuel and/or water pipes
to ground the appliance.
a
Do not route the power cable or room thermostat
cables near hot surfaces (like heating circuit flow
pipes). Use a suitable class of cable if there is any
possibility of contact with parts at temperatures
above 50°C.
The manufacturer declines all responsibility for dama-
ge caused by failing to ground the appliance adequa-
tely or by failure to respect the wiring diagrams pro-
vided in this manual.
All electrical connections must be made by a legally qualified heating engineer according to the following instructions.
(In Italy heating engineers are regulated by law no. 37 of the 22/01/2008).
ACCESSING INTERNAL COMPONENTS
ELECTRICAL CONNECTIONS