Filling And Emptying The System - Beretta EXCLUSIVE GREEN 25 CSI Installation And User Manual

8

FILLING AND EMPTYING THE SYSTEM

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The central heating system can be filled up once the
water mains have been connected up.
This must be done while the installation is cold by:
• giving two or three turns to the cap of the automatic air
vent valve (A, fig. 7a and 7b) to open it;
• making sure the cold water inlet tap is open (B, fig. 7a)
(GREEN C.S.I. only)
• opening the filling tap (C, on the boiler for GREEN C.S.I.,
external for GREEN R.S.I.) until the pressure on the
hydrometer (D) is between 1 and 1,5 bar (blue zone)
(fig. 7a and 7b).
Close the filling tap after filling it up.
The boiler is equipped with an efficient air separator so
that there is no need to do anything manually.
The burner only ignites when air venting has finished.
NOTE: air extraction from the boiler takes place
automatically, through two automatic bleeding valves, A
and E.
The first is situated on the pump, while the second is
inside the air chamber.
NOTE (GREEN C.S.I. only): the boiler is also equipped
with a semi-automatic filling mechanism.
The first system-filling operation must be carried out by
opening tap C with the boiler turned off.
NOTE (GREEN R.S.I. only): manual filling tap is not
supplied with the boiler, foresee one external or verify if
external water tank has one.
Before starting to empty it, remove the electrical feeder
by positioning the general switch for the system on "off".
• Close the interception devices for the thermal system
• Loosen the system outlet valve (F) manually
• The water from the system is discharged through the
outlet collector (G).
DHW system emptying (GREEN C.S.I. only)
The hot water system must be emptied every time there
is risk of freezing by:
• turning off the tap at the mains
• turning on all the hot and cold taps
• emptying out the lowest parts of the system.
Fig. 7a GREEN C.S.I.
A
D
GREEN R.S.I.
Fig. 7b
A
D
F F F F F
Fig. 8
ATTENTION
The collector must be connected, by means of a rubber
pipe (not supplied), to a suitable collection and evacuation
system in the storm water outlet and in compliance with
current regulations. The external diameter of the collector
is 20 mm: we therefore suggest using an Ø18-19 mm pipe,
to be closed with a suitable clamp (not supplied).
The manufacturer is not responsible for any damage
caused by the lack of a collection system
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G B
F
C
G
E
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