Radiant RBS 20 E Installation And Maintenance Manual - page 11
Installation Manual
COMBI – Cod. 99941NA – November 2002
8
VT
1
2
BLACK
BLACK
BROWN
LIGHT BLUE
YELLOW/GREEN
BLACK
BROWN
YELLOW/GREEN
LIGHT BLUE
TA
TA
5
TA
L
N
OR
N
L
OR
1
2
3
4
5
4 3
2 1
M
M
TA
PT
TA
OR
L
N
N
L
OR
TA
PT
PT
re
d
ye
llow
blu
e
bro
w
n
re
d
ye
llow
blu
e
bro
w
n
SHUKO
PLUG
MAINS
FOR U.K.
APPLICABLE
NOT
ELECTRICAL CONNECTIONS
The boiler works with 230 V 50 Hz AC current
and has maximum input of 150 W. Connection
to the electrical mains must be performed with
a device having an omnipolar opening of at
least 3 mm. Make sure the live and neutral
connections conform to the diagram. A secure
earth connection is compulsory.
IMPORTANT
If you need to replace the power supply cable,
use cable having the same characteristics:
(HO5 W-F) 3x1.5 with maximum external
diameter 9 mm.). Connect to the terminal block
located in the instrument panel as follows:
A.
Turn off the electrical power supply at the
mains.
B.
Remove the boiler front casing.
C.
Undo the two side screws on the panel
using the VT screwdriver and turn it to the
position shown in fig.1 (pos. 1).
D.
After pulling the panel downwards, undo
the four rear screws on the housing and
open the electrical control box by lifting the
cover as shown in fig.1.
E.
With the electrical control box now open
make the following connections:
• Connect the yellow/green wire to the
terminal marked with the earth symbol “
“ (see fig.1).
• Connect the blue wire to the terminal
marked with the letter “N”.
• Connect the brown wire to the terminal
marked with the letter “L”.
CONNECTION OF ROOM THERMOSTAT
NOTE: use low voltage II room thermostats
only.
The thermostat wire must not be placed in the
channel containing high tension wires, but
must have its own line
The room thermostat lead must not exceed
50m n length; minimum section 0.5 mm.
Connection: after carrying out the operations
described on page 15, proceed as follows:
A. Insert the room thermostat lead into the
entry point on the electrical control box
along with all the other leads on the
boiler.
B. Move the bridge PT (see fig.4) from
terminal TA to the free one next to it.
C. Insert the thermostat wires (fig.5) one in terminal TA and the other in the one next to it occupied by bridge PT which you have just
moved.
Fig. 1
Fig. 5
Fig. 4
Fig. 2
Fig. 7
Fig. 6
Fig. 3