42
1.3
DESCRIPTION
1.3.1
PRELIMINARY IGNITION CHECKS
Before the use of the boiler, it is necessary
to follow the following instructions:
– The installation where the boiler is con-
nected to, should be preferably with an
open expansion tank (fig. 9).
– The tube, which connects the boiler to
the expansion tank, should have an ade-
quate diameter according to the norms
in force.
– The heating pump should always be
running during the operation of the boil-
er.
– A possible ambient thermostat should
never interrupt the pump operation.
– If the installation is equipped with a 3 or
4 ways mixing valve, it should always be
placed in the opening position toward
the installation.
– Be assure that the draught regulator
works regularly and that there aren’t
impediments, which block the automatic
operation of the air gate damper.
1.3.2
PCLEANING
The cleaning should be carried out with
a certain frequency providing besides the
cleaning of the smoke passages, also the
cleaning of the ash box, removing the
ashes, which are contained in the collec-
tion basin. Use a proper pull-through for
the cleaning of the smoke passages (fig.
11).
1.3.3
MAINTENANCE
Do not perform any maintenance work,
dismantling or removal of parts without
properly emptying the boiler first.
The boiler must not be emptied when the
water is hot.
CAUTION:
The safety valve on the system must be
inspected by technically qualified person-
nel in accordance with the laws of the
country of distribution and instructions
for use of the safety valve. If the system is
completely emptied and remains unused
for some time, the safety valve must be
inspected before it is used again.
If the safety valve should malfunction and
cannot be re-calibrated, replace it with
a new 1/2” valve calibrated to 3 BAR and
conforming with Directive PED 2014/68/
UE.
Closed expansion tank system with heat exchanger and optional thermostat valve
Fig. 11
LE GEN D
VE Expansion tank
VS System safety valve 3 BAR - 1/2”
VM Mixing valve
VR Check valve
PI System pump
IR Heating system
VT Thermostat valve
SC Safety exchanger
F Filter
CAUTION: The safety exchanger is supplied in an
optional kit code
8105200
.
Temperature of the water supplied to the safety
heat exchanger: 10°C.
Pressure of the water supplied to the safety heat
exchanger: 2 bar.
Fig. 10
Summary of Contents for 8058540
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