22
Installation info
2.2.13 - ELECTICAL CONNECTIONS
The electrical connections of
EVE 05
is
shown in the clause ‘’WIRING DIAGRAMS’’
(par. 2.3)
The boiler must be connected to
the mains supply at
230 V - 50 Hz
. This connection is
to be perfectly done, as foreseen
by the IEC and local rules and must be
earthed.
This fundamental requirement for safety pur-
poses must be checked; in case of doubt,
ask for a professionally qualified technician
to check the electrical system.
UNICAL
disclaims all liability for damage or
injury caused by failure to earth the system
properly.
Gas, domestic water and central heating
pipes are not suitable for earthing purpo-
ses.
The boiler is supplied with 1.5 m long
3 x 0.75 mm² cord.
A double pole switch with a distance between
the contacts higher than 3 mm, must be ins-
talled upstream the boiler to enable all main-
tenance operations to be carried out safely.
Access to the electrical terminal strip
-
WARNING! Switch off the electrical sup-
ply
-
Remove the securing screws
B
in order
to rotate the control panel
-
Remove the casing.
-
To get access directly to the connections,
unscrew the 4 screws on the panel cover
(CP) and remove the cover.
Replacement of the electrical supply
cord
The replacement of the electrical supply
cord has to be done by competent technical
personnel.
Should the electrical supply cord be repla-
ced, you have to use the original cable code
95600259.
M1
CP
A
fig.18
B
B
-
Open the rear cover (CP) and replace
the cable A (connector A7)
The female faston of the hearting cable
has to be connected on the male faston
GND 1
Connection of the ON/OFF room
thermostat (RT)
-
Approach the connector M1.
-
Remove the existing jumper and connect,
on its place the room thermostat cable.
Collegamento ad un bollitore esterno
It is necessary to make the electrical
connection as indicated.
The diverting valve has to be fitted with the
priority to the DHW circuit and the microwitch,
whose its motor must to be equipped, has to
be closed once the DHW has been satisfied
and the valve is retourned in the normal
position.
The microswitch contacts C. and N.C. have
to be connected to the two pole terminal block
(TA), fitted on the boiler panel board, after
removal of the existing link (bridge - shunt).
The connection of a room thermostat will be
done onto the same terminals, in parallel with
the contacts of the diverting valve.
2.2.14 -
JUMPER LOCATION
They are placed on the modulation card and
their purpose is to settle basic operational
functions.
In order to get access to the jumper:
-
WARNING! switch off electrical supply.
-
Remove the casing.
JP1:
For nat. gas boilers, the jumper is on
NAT.
For LPG boilers, the jumper is on
LPG
.
The boilers operating with natural gas will at-
tempt the ignition for 3 times before to be put
in lock-out.
The boilers operating with LPG will be put in
lock-out after a single ignition attempt.
LPG
JP1
NAT
LPG
NAT
230V / 30-65°C
Boiler
thermostat
3 Way motor 230V with
internal microswitch
Boiler panel board
TA terminal block
