Family Aqua Condens 3.5 BIS
8
3.12 System loading and emptying (fig. 20)
FILLING THE SYSTEMS
In case of a new installation or replacement of the boiler, it is
necessary to clean the heating system.
In order to ensure the proper functioning of the product, after any
cleaning, additive and/or chemical treatments (e.g. antifreeze liquids,
filming agents, etc.) check that the parameters in the table are within
the indicated values.
Parameters
unit of
measurement
Hot water
circuit
Filling
water
pH value
-
7-8
-
Hardness
°F
-
<15
Appearance
-
-
clean
Fe
mg/kg
0,5
-
Cu
mg/kg
0,1
-
Once the hydraulic connections have been carried out, fill the system.
This operation must be carried out with a cold system, following
these instructions:
Domestic hot water system:
- open the cold water inlet tap to fill the storage tank
- to check that the storage tank is full, open a hot water tap and wait
for the water to exit.
Heating system:
- make sure that the system drain valve (
B
) is closed
- open the automatic air vent valve cap (
C
) by two or three turns
- open the filling tap (
H
) until the pressure indicated by the water
gauge (
D
) is between 1 and 1.5 bar (blue field).
- open the manual bleed valve (
E
) and close it once the bleeding
procedure is completed; if necessary, repeat this operation until no
more air exits the valve (
E
)
- once the filling operation of the system is finished, close the filling
tap (
H
).
NOTE:
the venting of the boiler takes place automatically via the two
automatic bleed valves
C
and
F
.
NOTE:
even if the boiler is fitted with an automatic filling device, the
first filling operation must be carried out by turning the filling tap (
H
)
with the boiler off.
EMPTYING
- Before starting emptying, switch off the electrical supply by turning
off the system's main switch.
- Close the cold water inlet tap.
Heating system:
- close the shut-off devices of the heating system
- open the automatic air vent valves (
C - F
)
- manually loosen the system drain valve (
B
), keeping the elbow of
the hose in position to prevent it slipping from its seat
- the water is discharged through the discharge manifold (
A
) - for
details refer to paragraph "Discharge manifold".
- drain the lowest points of the system.
Domestic hot water system:
- unscrew the plug on the hose connection (
G
)
- connect a plastic pipe to the hose connection of the storage tank
discharge valve (
G
)
- release the discharge device of the valve
- open the hot and cold water taps of the device
- drain the lowest points of the system.
The discharge manifold (
A
) must be connected via a rubber pipe
to an appropriate collection and evacuation system in the white
water discharge drain in compliance with current regulations. The
outer diameter of the manifold is 20 mm: it is therefore advisable
to use a rubber pipe Ø18-19 mm closed with a suitable clamp
(not provided). The manufacturer is not liable for any damage
resulting from the failure to channel the condensate.
Eliminating the air from the heating circuit and boiler (fig. 21)
During the initial installation phase, or in the event of a maintenance,
you are advised to perform the following sequence of operations:
- Switch off the power supply to the boiler.
- 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.
- Turn on the system filling tap on the hydraulic unit and wait until
the water starts coming out of the valve. Make sure that it comes
only water.
- Close the manual air vent valve with the CH11 spanner.
- Turn off the system filling tap until the water pressure indicated by
the hydrometer reaches 1-1.5 bar.
- Switch on the power supply to the boiler leaving the boiler in OFF
mode. Check that the gas tap is closed.
- The boiler, now, starts the vent cycle. Perform it by checking that
there is no air inside the boiler and that the pressure does not drop
too much (otherwise repeat the operations described above).
- Turn on the gas tap and ignite the boiler.
4 - COMMISSIONING AND MAINTENANCE
4.1
First commissioning preparation
The first time you turn the boiler on and in case of maintenance work,
before using the appliance you must fill the siphon with water and
make sure that the condensation is evacuated correctly.
Fill the condensation collection siphon pouring 1 litre of water into the
boiler combustion-analysis outlet with the boiler off, and check that:
- the safety cut-off device is floating
- water is flowing correctly from the discharge pipe out of the boiler
- the condensate outlet connection line is watertight
If the condensate outlet circuit (siphon and pipes) is working correctly,
the condensation level will not exceed the maximum.
Filling the siphon before using the appliance, and the use of a safety
cut-off device inside the siphon, prevent exhaust gases from being
released into the environment.
Repeat during standard and non-standard maintenance work.
~
15 mm
MAX
Before the ignition and the functional testing of the
Family Aqua
Condens 3.5 BIS
boiler, it is necessary to:
- check that the system fuel and water supply taps are open
- check that the gas type and the power supply pressure are those
for which the boiler is designed
- check that the deaerator cap is open
- check on the display that the pressure of the water circuit when
cold is between 1 bar and 1.5 bar and that the circuit is vented
- check that the pre-loading of the expansion tank is adequate (see
the Technical data table)
- check that the electrical connections have been carried out
correctly
- check that the combustion product outlet and air suction pipes
were adequately realised
- check that the circulator turns freely; undo the inspection screw
and check with a flat screwdriver that the rotor shaft moves without
hindrances.
Before loosening or removing the closing tap of the circulator,
protect the underlying electrical devices from possible water
leakage.
