48
INSTALLATION
2.13.1
INAIL security connection
Before being connected to the general circuit-breaker IG (see
wiring diagram), the power supply cables must be connected
to the contacts of the safety pressure switch as provided by the
INAIL collection R.
N
L
N
L
IG
PRS
IG
Main switch
PRS
Safety pressure switch
9
If several appliances are installed in a battery, if the total
absorption of the connected equipments exceeds 4000 VA,
a certified contactor with adequate capacity must be inter-
posed as shown in the diagram below.
N
L
N
N
L
L
IG
TLR
PRS
IG
Main switch
PRS
Safety pressure switch
TLR
Contactor
2.13.2
Connection available on terminal board
On the high voltage terminal board managing MO2 there are 3
terminals (A) that can be used to connect specific accessories.
101 102 103 104 105 106 107 108 109 110 111 112
MO2
J3-1
J3-7
J3-2
J3-3
J3-8
J3-5
J3-10
J2-1
b
b
b
g
h
h
h
bl
J2-1
g
DHW P. 3WAY
101 102 103 104 105 106 107 108 109 110 111 112
101 102 103 104 105 106 107 108 109 110 111 112
L
N
L
N
L
N
L
N
L
CH PUMP
ALARM
AVAIL.
A
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