Xylem Bell & Gossett Ecocirc+ 20-18 Installation, Operation And Maintenance Manual page 24

5 Operation
Position
Performance curve:
• 1. Low
• 2. Intermediate
• 3. High
Performance curve:
• A. Low
• B. Intermediate
• C. High
Constant pump speed:
• I. Low
• II. Intermediate
• III. High
eAdapt
22
Operating mode
Operation at constant
pressure
Operation at
proportional pressure
Operation at constant
pump speed
eAdapt
Air purge
Night
Ecocirc+ 20-18 Installation, Operation, and Maintenance Manual
LED status Description
- This position is selected for in-
floor heating systems.
The pressure stays constant,
when the water flow is
increased or decreased.
- This position is selected for two-
pipe heating systems.
The pressure changes
according to the actual demand
for heat.
The performance is selected
according to the features of the
system or heat demand.
- This position is selected for one-
pipe heating systems.
The speed stays constant, when
the water flow is increased or
decreased.
The speed is selected according
to the features of the system or
number of valves that can be
opened at the same time.
Green This position is selected to
optimize the energy
consumption by identifying the
ideal duty point.
Blinks green This position is selected to
remove the dissolved gases
from the pump.
The air purge must be done for
3 minutes.
If necessary, allow the air purge
for more than 3 minutes
according to the features of the
system.
- This position is selected to
decrease the energy
consumption of the pump,
when the heating system is
switched off.
The pump returns to the
original duty point when the
system restarts and the water
temperature increases.
For more information, see
the night mode
Set
on page 23.