23
Installation Instructions
ENGLISH
External prob e
connection ( * )
- P redisposed on the terminal
b oard, terminals SE
Danger!
Onl a qualied technician ma per-
form the electrical installation.
Before performing connections or
The b oiler is equipped with a power ca-
b le, b oiler installation requires electric al
connection to the mains
power supply . This connection must b e
made up to standard, as required the
regulations in force.
ON/OFF room
thermostat connection ( * )
- Remove the j umper and con-
nect the room thermostat wires
b etween terminals TA 2.
- Connect the modulating thermostat
wire b etween terminals TA1/OT
after hav ing remov ed the j umper.
thermostat connection
RT/OT ( * )
Rememb er that a b ipolar switch must b e
installed on the b oiler power line with ov er
3 mm b etween contacts, easy to access,
maki ng maintenance quick and safe.
The power cab le must b e replaced b y
UNICAL AG S.p.A. authorised techni-
cal staff, using original spare parts only .
Failure to comply with the ab ov e can
j eopardise the safety of the appliance.
Electric pow er supply connection
3.9 - ELECTRICAL CONNECTIONS
any type of operation on electrical parts, alw ays
disconnect electrical power and mae sure that
it cannot b e reconnected accidentally.
See par. 4.5 positioning on the b oard
( * ) Optional
NOTE!
Further details in the section
‘‘Technical Information’’ on the b oiler
page of the w w w .unicalag.it w eb site
ENGLISH
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ENGLISH
External prob e
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External prob e
connection ( * )
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connection ( * )
any type of operation on electrical parts, alw ays
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any type of operation on electrical parts, alw ays
disconnect electrical power and mae sure that
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disconnect electrical power and mae sure that
it cannot b e reconnected accidentally.
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it cannot b e reconnected accidentally.
onnect the modulating thermostat
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onnect the modulating thermostat
wire b etween terminals
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wire b etween terminals
TA1/OT
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TA1/OT
after hav ing remov ed the j umper.
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after hav ing remov ed the j umper.
Electric pow er supply connection
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Electric pow er supply connection
See par. 4.5 positioning on the b oard
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See par. 4.5 positioning on the b oard
( * ) Optional
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( * ) Optional
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