25
Technical features and dimensions
ENGLISH
Power supply connection 400V
The installation of the boiler requires the electrical connection to
a 400 V - 50 Hz network and a 230V - 50 Hz connection: these
connections must be made as required by current standards.
Danger!
Only a qualified technician may perform the
electrical installation.
Before performing connections or any type
of operation on electrical parts, always dis-
connect electrical power and make sure that
it cannot be reconnected accidentally.
remember that it is necessary to install an easy-to-access sin-
gle-pole magnetothermic switch on the electrical power supply
line of the boiler according to the fan plate data, in order to make
any maintenance operations quick and safe.
The replacement of the power supply cable must
be carried out by authorized technical personnel.
Failure to comply with the above may compromi-
se the safety of the appliance.
ATTENTION!
Comply with the PHASE and NEuTrAL polarity
since flame detection is Phase Sensitive.
ATTENTIoN:
The 230 V cables must run far apart from
24V cables.
M
o
d
b
u
s
A
M
o
d
b
u
s
B
+
2
4
V
G
N
D
e
B
U
S
B
R
B
L
Y/G
1
2
3
4
5
6
7
A2
A1
A4
A3
Y2
Y1
Y3
G
N
D
1
2
1
2
3
VM
(A)
M
3
K 1
L
(*)
0
off
I
on
4.0
5.0
6.3 A
D
L1
N
PE
L1
PE
N
Y/G
BK
BR
GR
BL
L1
L2
L3
N
ALIM.
400 V
50 Hz
PE
BK
BR
GR
Y/G
PE
L1
L2
L3
BR
Y/G
BL
3.9.2 - BOILER POWER SUPPLY
(*) The Dashed links and
BOX general electrical
by installer.
Summary of Contents for SPK 1000
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