Unical KUTter R 28, Installation And Servicing Manual

Page: 79 / 97

32
See par. 4.5 positioning on the board
(*) Optional
External probe
connection (*)
- Predisposed on the terminal
board, terminals sE
The boiler is equipped with a power ca-
ble, boiler installation requires electric al
connection to the mains
power supply. This connection must be
made up to standard, as required the
regulations in force.
ON/Off room
thermostat connection (*)
- Remove the jumper and con-
nect the room thermostat wires
between terminals TA 2.
- Connect the modulating thermostat
wire between terminals TA1/OT
after having removed the jumper.
ON/Off room
thermostat connection
rT/OT (*)
Remember that a bipolar switch must be
installed on the boiler power line with over
3 mm between contacts, easy to access,
making maintenance quick and safe.
The power cable must be replaced by
UNICAL AG s.p.A. authorised techni-
cal staff, using original spare parts only.
Failure to comply with the above can
jeopardise the safety of the appliance.
Electric power supply connection
NOTE!
For more information
see Technical Info
from site indicated at pag. 2