11
INSTALLATION AND OPERATION MANUAL
• An electric installation with earthing, in accordance with the electric safety regulations in force, is to be installed when
connecting the electric part of the boiler.
Protect the isolation of the mains cable against damage.
fig. 6 circuit diagram of the boiler
S1 - power supply switch; S2 – ventilator switch; SK – emergency ventilator shutdown 95°C thermostat; F - fuse; M - ventilator;
- circulation pump of the heating system; KR – electronic controller; U
1,2
- water temperature sensors; U
3
- smoke temperature sensor.
In order to guarantee natural water circulation of water in the boiler, the pipework between the boiler
and the mixing valve in the line boiler–mixing valve–boiler is to be of the same diameter and correspond to
the diameter of the connection pipes of the boiler.
• circuit DiaGram of the Boiler
1
2
3
4
5
6
7
8
9
10
11
12
N
L
L1
L13
L14
N
L3
N
L4
M
P
N
L
P
N
220 V
P
N
L
X1
L1
N
L2
L3
L4
P
X2
KR
L13
L2
N
L13
L14
N
L
S1
S2
SK
L
L
L1
U
U
F
X3
U
1
2
3
