Closed expansion tank system with heat exchanger and optional thermostat valve
ENERGY PLUS
PRELIMINARY
IGNITION
CHECKS
Before the use of the boiler, it is neces-
sary to follow the following instruc-
tions:
– The installation where the boiler is
connected to, should be preferably
with an open expansion tank (fig. 10).
– The tube, which connects the boiler
to the expansion tank, should have an
adequate diameter according to the
norms in force.
– The heating pump should always be
running during the operation of the
boiler.
– 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 posi-
tion toward the installation.
– Be assure that the draught regulator
works regularly and that there aren't
impediments, which block the auto-
matic operation of the air gate damp-
er.
INSTALLATION
VEC
USE AND MAINTENANCE
CLEANING
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, remov-
ing the ashes, which are contained in
the collection basin. Use a proper pull-
through for the cleaning of the smoke
passages (fig. 11).
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
personnel 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 Direc-
tive PED 97/23/CEE.
LE GEN D
V EC
Expansion tank
V S
System safety valve 3 BAR - 1/2"
V M
Mixing valve
V R
Check valve
PI
System pump
IR
Heating system
V T
Thermostat valve
S C
Safety exchanger
F
Filter
- 13
-
Fig. 10/a
Fig. 11