Lowara ecocirc XL Manuel D'utilisation page 26

en - Original instructions
RS-485 communication port via Modbus or BAC-
24
net protocol.
The following instruction is used when making the
change on the user interface. See
• Press the operating mode button.
• The operating modes are cyclically changed by
the pressed button.
mode
mode
mode
6.1.3 Change the set point
See Figure 13 as reference.
1. Press one of the setting buttons (5).
The display starts to blinking the actual set
point.
2. Change the value using the buttons (5).
3. Wait 3 seconds to store and activate the new
set point.
The display will stop blinking to confirm the
change.
NOTICE:
If a non return valve is mounted on the system, it
must be ensured that the set minimum discharge
pressure of the pump is always higher than closing
pressure of the valve.
6.1.4 Change the displayed unit of
measurement
1. Press the button (3) to change the unit of meas-
urement. See Figure 13
Power
Parameter
button
Speed
24
not available on 25–40, 25–60, 32–40, 32–60 models.
25
on three digit display of models 25–40, 25–60, 32–40, 32–60
26
Figure 13 .
mode
mode
mode
.
Parameter
button
Flow
Parameter
button
Head
Parameter
button
2. When flow and head are displayed, by pressing
the button (3) for more than one second, the
unit of measurement can be changed as follow:
• Flow: m3/h ↔ gpm (US)
• Head: m ↔ ft
6.2 Start or stop the pump
CAUTION:
• The pump must not run dry as this
can result in the destruction of the
bearings in a very short time. Fill and
vent the system correctly with liquid
before first start-up. The pump rotor
chamber will be vented after the pow-
er on of the pump with an automatic
air venting procedure.
• The system cannot be vented
through the pump.
• Start the pump in one of the following ways:
• Switch on the power supply of the pump.
• Close the start/stop contact.
• Send the start command through the commu-
nication bus.
The pumps starts pumping in constant pressure
mode with the following default set point:
• 2m for XX-40 models (Max head 4m)
• 3m for XX-60 models (Max head 6m)
• 4m for XX-80 models (Max head 8m)
• 5m for XX-100 models (Max head 10m)
• 6m for XX-120 models (Max head 12m)
For more information about how to change set-
ting, see section 6.1.
• Stop the pump in one of the following ways:
• Switch off the power supply of the pump.
• Open the start/stop contact.
• Send the stop command through the commu-
nication bus.
6.2.1 Automatic air venting procedure
At each power-on of the pump unit, an automatic air
venting procedure is executed. During this phase,
the user interface displays "deg" (dg)
count-down until the completion of the procedure.
The air venting procedure can be:
• Recalled or skipped manually by pressing simul-
taneously the two buttons (5). See
• Permanently enabled or disabled by pressing si-
multaneously, for at least 10 seconds, the two
buttons (5). See Figure 13
• For ecocirc XLplus only, recalled/skipped or per-
manently enabled/disabled via communication
bus. See the communication manual on
www.lowara.com
6.2.2 Activate the twin pump function
The circulators are configured as single units by fac-
tory default. To activate the twin functions, please
follow the procedure below only on one of the two
units, the other unit will be auto-configured. The
working modes are described in sections 5.2.12 and
6.2.3 of this manual.
25
and a
Figure 13 .
.