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27
3 COMMISSIONING
3.1 First start-up
Before starting up the
CONNECT LE
, check that the plumbing and electrical connec-
tions have been carried out correctly.
During the testing phase it is possible to check the temperatures of the low tempera-
ture zones using the thermometers (T1-T2).
3.2
C2
C1
T2
T1
Setting the circulation units
The
CONNECT LE
is equipped with digitally controlled high efficiency electronic circu
-
lation units. Below is a description of the main characteristics and the procedures to
be carried out in order to set the required operation.
User interface
The user interface consists of a button (A), a two-colour LED red/purple (B) and four
yellow LED (C).
A
B
C
LED 1
LED 2
LED 3
LED 4
LED 5
The user interface allows the functions which are in operation to be displayed (oper-
ating status, alarm status) and allows the circulation unit operating mode to be set.
The performance data, indicated by the LED (B) and (C) is always displayed during
normal operation of the circulation units while the parameters are set by pressing the
button (A).
Indication of the operating status
When the circulation unit is operating, the LED (B) is green The four yellow LEDs (C)
indicate the consumption of electrical energy (P1) as shown in the table below.
LED status
CIRCULATION UNIT
status
Consumption
in % of
P1 MAx (*)
Green LeD on +
1 yellow LeD on
Operation at minimum
0-25
Green LeD on +
2 yellow LeD on
Operation at
minimum-average
25-50
Green LeD on +
3 yellow LeD on
Operation at
average-maximum
50-75
Green LeD on +
4 yellow LeD on
Operation at maximum
100
(*)
For the power (P1) absorbed by the individual circulation unit, please refer to the
information provided in the table
“Technical data” a pagina 19.
Indication of the alarm status
If the circulation unit has detected one or more than one alarm, the two-colour LED (B)
is red. The four yellow LEDs (C) indicate the type of alarm as shown in the table below.
LED status
ALARm
description
CIRCULATION
UNIT status
Possible
SOLUTION
Red LED
on +
LeD 5 yellow on
Motor shaft is blocked Attempt start-up
every 1.5 seconds
Wait or release
motor shaft
Red LED
on +
LeD 4 yellow on
Low input
voltage
Warning only.
The circulation
unit continues to
operate
Check the input
voltage
Red LED
on +
LeD 3 yellow on
Fault in the electrical
power supply or faulty
circulation unit
The circulation unit
is not moving
Check the electri-
cal power supply
or replace the
circulation unit
b
If more than one alarm activates, the circulation unit will only display the alarm
with the highest priority.
Active settings display
With the circulation unit powered, briefly press the button (A) to see the active config
-
uration of the circulation unit. The LEDs indicate the active settings.
No changes can be made to the configuration of the circulation unit in this phase. Two
seconds after having pressed the button (A), the user interface once again shows the
normal display of the operating status.
Button lock function
The button lock function is used to prevent any setting modification being made acci
-
dentally or improper use of the circulation unit.
When the button lock function is active, it is not possible to press and hold the button
(A). This prevents from entering the settings section of the circulation unit operating
modes.
Pressing the button (A) for more than 10 seconds enables/disables the button lock
function. During this passage, all LEDs (C) flash for 1 second.
> 10 s
Changing the operating mode
In normal operating conditions, the circulation unit operates with the factory settings
or the last settings made.
To change the configuration:
- Make sure that the button lock function is disabled.
-
Press the button (A) for more than 2 seconds until the leds begin to flash. Brief
-
ly press the button (A) and within 10 seconds the user interface will change
to display the next series of settings. The settings available will appear in se-
quence.
- If the button (A) is not pressed, the last setting selected will be stored.
