Manu_ENG_UFO_ rev. 0_04_2012
pag. 12
Connection to ELECTRIC feeding
(for appliance UFO EB /08 with electronic start-up)
IMPORTANT: the electrical connection of the equipment shall be made in accordance
with the directions given in this technical book exclusively by professionally qualified
personnel. The installation must be carried out in accordance with regulations in the
country of installation.
The appliance must be fed with 230 Volt / Single Phase / 50 Hz feeding. The control flame
mounted on gas valve has a plug/socket connection with security hook (picture 3). Mount a
bipolar switch upstream of the heater for switch-on and switch-off, so you can isolate it from
electric supply. Use this manual for the size of the power supply line, or refer to the data given
in the plate label of the heater. In any case, use a cable with minimum section 4x1.5mm
2
(TWO-STAGE version).
The wiring diagram is shown on page 15 of this manual.
For the electrical connection unlock the plug and unscrew its case; connect a cable according
to the indications given on the terminal plug, namely:
L1 phase
wire
N neutral
wire
earth wire
L2
modulator command for two-stage gas valve (if provided)
L3
signal for burner block (if provided)
IMPORTANT: it is essential for the smooth functioning of the appliances, to respect the
Phase / Neutral polarity, with that indicated on the power connector.
IMPORTANT: it is also essential for the smooth functioning of the appliances, and for the
safety of the user, efficient plant grounding, executed according to existing regulations.
Under no circumstances you can use the gas connection pipeline as grounding of equipment.