Filling And Emptying The System - Beretta METEO GREEN HE R.S.I. Installer And User Manual

HIGH VOLTAGE CONNECTIONS (230V)
LOW VOLTAGE CONNECTIONS

15 - FILLING AND EMPTYING THE SYSTEM

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:
- turn the caps of the lower (A) and upper (E) automatic bleed valves two
or three times; leave A and E valve caps open for continual air venting
(Fig. 1.8);
- making sure the cold water inlet tap is open
- opening the external filling tap until the pressure on the hydrometer (C)
is between 1 and 1,5 bar (blue zone) (Fig. 1.8).
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: 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 (B) manually
- The water from the system is discharged through the outlet collector
(A - Fig. 1.5).
SUGGESTIONS TO CORRECTLY ELIMINATE AIR FROM THE
HEATING SYSTEM AND BOILER (Fig. 1.9)
We recommend carrying out the sequence of operations given below during
first installation or with extraordinary maintenance work:
1. Using a CH11 spanner open the manual air vent valve located above
the air box; the tube supplied with the boiler must be connected to the
valve to let out the water into an outside container.
2. Open the manual system filling stopcock on the water group, wait until
the water starts coming out of the valve;
3. Switch on the boiler leaving the gas cock closed;
4. Use the room thermostat or the remote control panel to activate request
for heat so that the three-way will turn to heating;
5. Activate request for hot water as follows:
instant boilers: turn on a tap for 30" every minute so that the three-
way cycles from heating to domestic hot water and vice versa about
ten times (here the boiler will go into alarm as it lacks gas and has to
be reset every time this happens).
Heating only boilers connected to an external water tank: use the
water tank thermostat;
- 1.7 -
6. Continue the sequence until water only comes out of the manual air
vent valve and the flow of air has finished; close the manual air vent
valve at this point;
7. Make sure the system is at the correct pressure (1 bar is ideal);
8. Close the manual system filling stopcock on the water group;
9. Open the gas cock and ignite the boiler.
METEO GREEN HE R.S.I.
- 1.8 -
C
- 1.9 -
13