DAB EVOPLUS V3.0 Instructions Pour L'installation Et La Maintenance page 42

10.1.1 Regulation with Proportional Differential Pressure
10.1.2 Regulation with Constant Differential Pressure
10.1.3 Regulation with constant curve
H
maximum limit
Q
ENGLISH
In this regulating mode the differential pressure is reduced or increased as the
demand for water decreases or increases.
The Hs set point may be set from the display or by an external signal 0-10V or
PWM.
Regulation indicated for:
Heating and conditioning plants with high load losses
–
Two-pipe systems with thermostatic valves and head ≥ 4 m
–
– Plants with secondary differential pressure regulator
– Primary circuits with high load losses
Domestic water recirculating systems with thermostatic valves on the
–
rising columns
In this regulating mode the differential pressure is kept constant, irrespective of
the demand for water,
The Hs set point may be set from the display or by an external signal 0-10V or
PWM.
Regulation indicated for:
Heating and conditioning plants with low load losses
–
Two-pipe systems with thermostatic valves and head ≤ 2 m
–
Single-pipe systems with thermostatic valves
–
– Plants with natural circulation
– Primary circuits with low load losses
– Domestic water recirculating systems with thermostatic valves on the
rising columns
In this regulating mode the circulator works on characteristic curves at a
constant speed. The operating curve is selected by setting the rotation speed
through a percentage factor. The value 100% indicates the maximum limit
curve. The actual rotation speed may depend on the power and differential
pressure limits of your circulator model.
The rotation speed may be set from the display or by an external signal 0-10V
or PWM.
Regulation indicated for heating and conditioning plants with constant flow.
37