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XP2 Low voltage terminal board
BC1 Backup heat generator (Backup) (Connection by installer)
PT4 Domestic hot water tank temperature probe
PT1 Plant temperature probe
AL Anti-legionella (Connection by installer)
TA Consent from room thermostat or generic potential-free
contact (Connection by the installer)
FTV Photovoltaic management
J3-6 J3-5 J3-4 J3-3 J3-2 J3-1
J3 J2
J5
J5-7
J5-6 J5-5 J5-4 J5-3 J5-2 J5-1
J1
J1-1 J1-2 J1-3 J1-4
J2-4
J2-6
J2-7
J2-5
J2-8
J2-10
J2-9
J2-2J2-1 J2-3
J4
J4-4
J4-8
J4-5
J4-7J4-2
J4-3
J4-1
J4-6
VH4-1
BC2 BC2 BC1 BC1
BC1
BC2
AUXI
VH4-2 VH4-3 VH4-4
PTPT PT PT PT PT PT PT PT PT
J2-1 J2-2 J2-3 J2-4 J2-5 J2-6 J2-7 J2-8 J2-9 J2-10
PT2PT3PT4PT8 PT1
J3-1 J4-2 J4-3 J4-4 J4-5 J4-6 J4-7 J4-8
J3-1J3-2J3-3
J5-3
J3-6
J5-2
J3-5
J5-1
J3-4
J5-4
J5-5
J5-3
J5-6
J5-7
J5-3
PIPIPIPI
PI
PIPIPIHL
G
B1
A1
GB2
A2
G
B3
A3
G
CAN P16 P15 P14 P13
485-3 485-2 485-1
AL
FTV
TA
s
s
s
BC1
Description of contacts
Support generator terminals (XP2)
BC1: BC1 normally-open potential-free contact for
backup thermal generator. Maximum contact rat-
ing 2A.
Check the tightness of all power conductor terminals at
Digital input terminals (XP2)
P15:
appliance.
P14: -
gionella function.
By activating the Antilegionella function, the regulator can
conduct the thermal disinfection procedures autonomous-
ly on hot water systems equipped with recirculation, con-
sider-ably reducing the risk of the presence and prolifera-
tion of the bacteria causing Legionella.
for activation of the anti-legionella function (to pur-
chase separately, together with a timer, and to be con-
nected by the installer)
The variables in the systems in which our products may
be installed do not allow the total exclusion of the risk.
Activation of the disinfection function can be performed by
connecting a timer to the inlet that has a default value set
for 2 a.m. the night between Sunday and Monday; as sta-
tistically this is a time with a low probability of employment
on behalf of the users.
The length of the action depends by the features of the
installation.
maximum temperature reached within the circuit and, with
the increase of temperature, the dura-tion time decreases.
The anti-legionella function is only possible with the
electric heater kit.
P13: TA consent from room thermostat or generic po-
tential-free contact
• Closed contact: the unit is switched on for heating or
cooling the plant water.
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