Beretta NOVELLA 55-64-71 RAP, Installation Manual

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14
3.4
Water connections
NOVELLA
boilers are designed and made
for use in central heating systems, but can
also be used to generate domestic hot water
if connected to a suitable storage cylinder.
The specifications of the water fittings are as
follows:
MI
CH outlet 1”1/4 F
RI
CH return 1”1/4 F
b
The “RO120 storage cylinder water con-
nections kit” (cod. 596369) adapts the
boiler’s water connections to a different
diameter:
MI
CH outlet 3/4” F
RI
CH return 3/4” M
b
The choice of system components and
the method of their installation are left
up to the heating engineer installing the
system. Installers must use their exper-
tise to ensure proper installation and
functioning in conformity to all applica-
ble legislation.
b
Circuits filled with anti-freeze must be fit-
ted with water disconnectors.
3.5
Electrical connections
Use a multi-pole disconnector with a contact gap of at least 3 mm to connect the appliance to the mains electricity
supply. The appliance functions on an alternating current supply of 230 V, 50 Hz. Consumption is 150 W. The appli-
ance conforms to applicable standards.
b
The following instructions are mandatory:
- install a multi-pole magnetic thermal trip switch and disconnector conforming to IEC-EN standards (with a
contact gap of at least 3 mm);
- respect the polarity of the L1 (Phase) - N (Neutral) connections;
- use cables with insulation and cross section conforming to applicable standards (minimum cross section 1.5
mm
2
);
- always refer to the electrical wiring diagrams in this manual when performing any electrical work.
- ensure that an efficient ground connection is provided.
a
It is strictly forbidden to use fuel and/or water pipes to ground the appliance. The manufacturer declines all
responsibility for damage caused by failing to ground the appliance adequately.
Fig. 3.1