Immergas SUPER TRIO - (Optional); Cooling; Central Heating Circuit; Circuit System Filling

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INSTALLERUSER
MAINTENANCE TECHNICIAN
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e expansion vessel must be charged
to:
1.5 bar + 0.1 bar for every metre of the
water column.
“metre of the water column” means
the vertical distance that is present
between the expansion vessel and the
solar collector.
Example:
e circulation unit is found on the
ground oor and the solar collector
is found on the roof at a hypothetical
height of 6 m, the distance to be cal-
culated is:
6 m x 0.1 bar = 0.6 bar
therefore the expansion vessel must be
charged to:
1.5 + 0.6 = 2.1 bar
Solar hydraulic unit safety valve.
ere is a safety valve present on the
hydraulic unit that protects the system
from an excessive increase in pressure.
is valve intervenes by discharging
the liquid contained in the circuit when
the pressure reaches 6 bar.
If the safety valve intervenes and there-
fore part of the liquid contained in the
circuit is lost, it must be re-integrated.
1.32 COOLING / CENTRAL
HEATING CIRCUIT / C.H.
CIRCUIT SYSTEM FILLING.
Once hydraulically installed, proceed
with system lling via the lling cock
/ tap. Filling is performed at low speed
to ensure release of air bubbles in the
water via the Internal Unit and central
heating system vents.
e pumps can be noisy on start-up
due to the presence of air. is noise
should stop after a few minutes of
functioning and however aer having
correctly bled the air contained in the
hydraulic circuit.
Make sure that the vent hoods are loos-
ened. Open the radiator vent valves.
Close radiator vent valves when only
water escapes from them.
Close the lling cock / tap when the
pack or Internal Unit manometer /
pressure gauge indicates approx. 1.2
bar.
N.B.: during these operations, enable
the automatic vent functions on the
Internal Unit (active on rst ignition).
Start the pumps of the hydronic unit
by activating the kit via the relative
remote panel.
1.33 FILLING THE SOLAR
CIRCUIT SYSTEM
OPTIONAL.
e system can only be lled when:
- the system is completely assembled;
- any processing residues that cause
obstructions and through time dete-
riorate the features of the glycol have
been eliminated;
- any presence of water in the system
has been eliminated, which could
otherwise cause damage to the system
in winter;
- the absence of leaks has been veried
by checks using air;
- the storage tank unit has been lled;
- the expansion vessel has been charged
according to system requirements.
e system must be lled using only
the glycol supplied by Immergas via an
automatic pump. e system must be
lled with vent valve closed.
Proceed as follows to ll the system
(Fig. 49):
1 connect the automatic pump ow
pipe to the lling cock / tap tting
(9) positioned below the pump and
open the valve itself.
2 connect the automatic pump return
pipe to the draining cock / tap tting
(8) and open the draining valve.
49
Key:
1 - Solar circulator pump
2 - Non return valve, thermometer and cock
3 - Safety valve drain tting
4 - Flow meter
5 - 6 bar safety valve
6 - 3/4” connection for expansion vessel
7 - Pressure gauge
8 - Draining cock / tap
9 - Filling cock / tap
10 - Insulating casing
11 - Flow rate regulator
12 - Inlet
13 - Outlet
14 - Reference for ow rate reading