Technical data

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CTC EcoZenith i250
Installation
13. Electrical installation
Installation and connection in the CTC EcoZenith i250 must be undertaken
by an authorised electrician. All wiring must be installed according to
applicable regulations. The boiler is internally connected by the factory and
set for a 5.5 + 6.0 kW power output. Depending on the country in which
CTC EcoZenith i250 is to be installed, it is available with a 400 V or 230 V
electrical connection.
Electrical connections are made behind the product's front panel. Undo
the screws on the top (2 screws), bend out and put the front to one side
(disconnect any network cables on the front printed circuit card for easier
access). The terminal blocks are located behind the electrical
connection box cover. Connection cables are inserted in the cable ducts
on the unit’s top cover, which exit at the same height as the bottom of the
electrical connections box. Sensor cables are inserted separately as far as
possible through the cable ducts to the right of the product’s top cover.
Safety switch
The installation should be preceded by a dual pole isolating safety switch
which ensures disconnection from all electric power sources.
Circulation pump connection for radiator system
The radiator pump is connected electrically to the terminal board. Electrical
data: 230V 1N~. Internal fuse 10 A.
Max. thermostat
If the heat pump has been stored in an extremely cold place, the max.
thermostat may have been triggered. You reset it by pressing in the button
on the electrical switchboard behind the front panel.
Always check on installation that the max. thermostat has not tripped.
13.1 Electrical installation 400 V 3N~
The CTC EcoZenith i250 must be connected to 400 V 3N~ 50 Hz and
protective earth.
Terminal block no.: L1, L2, L3, N, PE.
The minimum group fuse size is specified in “Technical data”.
13.2 Electrical installation 230V 1N~
The CTC EcoZenith i250 must be connected to 230V 1N~ 50 Hz and
protective earth. Terminal block no.: L1, N, PE
The minimum group fuse size is specified in “Technical data”.
Symbol for max.
thermostat: