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ENGLISH
22
0
0
1
2
3
4
5
6
7
8
0,5
1
1.5
2
2.5
3
3.5
4
0
0
10
20
30
40
50
60
0.5
1
1.5
2
2.5
3
3.5
4
CC4
CC3
CC2
CC1
CC1
CC2
CC3
CC4
PP3
PP3
CP3
PP2
PP2
PP1
PP1
CP2
CP1
CP3
CP2
CP1
Flow rate (m3/h)
Circulation unit head (m)
Flow rate (m3/h)
Power absorbed by circulation unit (W)
1 .8 Circulation units
CONNECT LE
is equipped with high efficiency electronically controlled circulation units. The performance data of these units to be used to
size the system is shown in the graph.
Available head of the circulation unit
Residual head available to the system
for CONNECT 1D LE
Residual head available to the system
for CONNECT 3D LE / CONNECT 2D LE
Power absorbed by the circulation unit
b
When starting up for the first time and at least once a year, it is
advisable to check that the shaft of the circulation units rotate.
This is necessary because, especially after lengthy periods of
inactivity, deposits and/or residue may stop it rotating freely.
a
Do not run the circulation unit without water.
b
If there are flow regulator devices in the low temperature circuits
(thermostatic, electrical or motorized zone valves, etc.) it is rec-
ommended that the circulation unit is set to "Proportional Head"
and includes a differential by-pass on the manifold.
PP1
LOW proportional head curve
PP2
AVERAGE proportional head curve
PP3
HIGH proportional head curve
CP1
LOW constant head curve
CP2
AVERAGE constant head curve
CP3
HIGH constant head curve
CC1
Curve 1 = 4 metres
CC2
Curve 2 = 5 metres
CC3
Curve 3 = 6 metres
CC4
Curve 4 MAX = 7 metres
0
0
1
2
3
4
5
6
7
8
0,5
1
1,5
Flow rate (m
3
/h)
Circulation unit head
(m)
2
2,5
3
3,5
4
Flow rate (m
3
/h)
CC4
CC3
CC2
CC1
PP3
CP3
PP2
PP1
CP2
CP1
Circulation unit head
(m)
0
0,5
1
1,5
2
2,5
3
CC1
CC2
CC3
CC4
PP3
PP2
PP1
CP3
CP2
CP1
0
1
2
3
4
5
6
7
8
0
0
1
2
3
4
5
6
7
8
0,5
1
1,5
Flow rate (m
3
/h)
Circulation unit head
(m)
2
2,5
3
3,5
4
Flow rate (m
3
/h)
CC4
CC3
CC2
CC1
PP3
CP3
PP2
PP1
CP2
CP1
Circulation unit head
(m)
0
0,5
1
1,5
2
2,5
3
CC1
CC2
CC3
CC4
PP3
PP2
PP1
CP3
CP2
CP1
0
1
2
3
4
5
6
7
8
Before any of the connections are made, all the piping must be thor-
oughly flushed to remove any residue which could compromise the
proper functioning of the
CONNECT LE
.
The plumbing connections to the boiler and the system must be car-
ried out rationally, as indicated in the figure.
Direct connections can be made using the female couplings on
the
CONNECT LE
delivery and return pipes or cocks (not supplied)
can be fitted on the system side. These cocks are very useful when
maintenance is carried out, as they allow just the
CONNECT LE
to be
drained without having to drain the entire system.
b
Check that the expansion vessel on the boiler has sufficient ca-
pacity for the size of the system.
b
Ensure that the pipe connection holes from the
CONNECT LE
to
the boiler are sealed.
