21
3
STANDARD PANEL BOARD
(WIRING DIAGRAM TYPE 21058 FOR TS 3P 65 TO 180 AND 21059 FOR TS 3P 240 TO 600)
3.1 - ELECTRICAL SUPPLY
The boiler's electrical safety is always granted
only when the appliance is correctly and
effectively earthed, as stated in the applicable
standards in force.
It is necessary to be sure about this essential
safety requirement.
In case of doubt, ask for an ispection of the
electrical installation by a competent and
qualified electrician, because the manufacturer
is not responsible for damages due to a non
efficient earthing of the boiler.
Ascertain that the electrical installation is
capable to supply the maximum electrical
output required by the boiler and its auxiliary
equipment.
It is not allowed to use, for the electrical supply
of the boiler, adaptors, multiple sockets and/or
cable extensions.
A double pole switch is required by the
standards.
In any case refer to your local electrical
requirements.
The use of any electrical appliance implies
the observance of some foundamental rules,
as:
-
do not touch the appliance with wet or
moist parts of the body, or barefoot;
-
do not pull the electrical cables;
-
do not expose the appliance to the
atmospheric agents (rain , sun, etc);
-
do not allow the use of the boiler by
untrained persons.
3.2 - FUNCTIONS
DESCRIPTION
Through the main switch 11 the panel board
and the ancillary equipments connected to it
are powered.
The switches 12 and 13 control the
respectively the burner and the heating pump.
Through the thermostat 32 the boiler working
temperature is adjusted.
This thermostat is provided with a DPDT
contact, for the control of a two stage burner.
The differential between the switching points
of the two double pole is 6°C (not adjustable).
The minimum thermostat, accessible through
the opening of the panel board cover, switches
OFF the C.H. pump during the reacing of
the steady state and up to the obtention of
30 °C within the boiler.
On the electrical supply line to the boiler a
switch with fuses is to be foreseen.
fig. 23
11 Illuminated main switch
12 Burner switch
13 C.H. pump switch
31 High limit thermostat
32 Working thermostat
41 General fuse
42 Thermometer
