Centrometal CentroPelet ZV16 Instrucciones Técnicas página 46

boiler, etc..) consult qualified personnel who can
then answer the compliance of the system, as
envisaged by the law in force.
Flushing the system
In accordance with the UNI-CTI 8065 is
strongly recommended to wash the entire
system before connecting it in order to get
rid of residues and deposits. After flushing
the system to protect it against corrosion and
deposits, it is recommended the use of inhibitors.
Upstream from the stove, always install shutters
so as to disconnect it from the plumbing system
should it be necessary to move it, or when it
requires routine and/or special maintenance.
Connect the stove using hoses so that the stove
is not too strictly connected to the system, and
to allow slighht movement.
Filling of the system
STOPPER BLOCKED
LOOSE STOPPER
ONE TURN
Filling must be done slowly in order to allow the
46
air bubbles to come out through the appropriate
vents placed on the heating system.
In Thermal systems with closed circulation the
loading pressure with cold boiler and the prelo-
ading pressure of the expansion vessel must be
equivalent.
• In Thermal systems with open circulation, it
is possible the direct contact between the circu-
lating liquid and the air. During the heating sea-
son, the user must regularly check the level of
water circulating in the expansion tank.
The content of water in the recirculation system
must be kept constant.
Practical experience shows that a regular check
of the water level should be made every 14 days
in order to maintain a fairly constant water con-
tent.
In case it is necessary additional water it is ne-
cessary to be made the filling process when the
heater is cooled to room temperature.
These are precautions to prevent the arising of
thermal stress of the steel body of the heating
stove.
• In plants equipped with open vessel the water
pressure in the heating stove, (when the system
is cold) , must not be less than 0.3 bar;
• the water used for filling the heating system
must be decontaminated and without air.
cause the occurrence of noise during
operation. The manufacturer declines
VENTING
all responsibilities if damage caused to
SAFETY
people, animals or property caused if
VALVE
above instructions are not followed.
When all the hydraulic connections are done,
proceed to test the pressure of the seals, through
the filling of the heating stove.
The loading valve is necessary and must be
provided in the hydraulic system.
This operation must be done with caution, re-
specting the following steps:
• open the air vent valves, the heater and the
Do not mix the heating water with
antifreeze or corrosion substances
in the wrong concentrations.
It can damage the seals and