Wilo Stratos MAXO Notice De Montage Et De Mise En Service page 61

Differential pressure Δp-c
The control keeps the differential pressure generated by the pump constant over the permissible flow rate
range at the set differential pressure setpoint H
An optimized constant differential pressure control is available for the corresponding predefined applica-
tions.
Assuming a required delivery head to be set according to the design point, the pump variably adjusts the
pump output to the required volume flow. The volume flow varies due to the open and closed valves on the
consumer circuits. The pump output is adjusted to the requirements of the consumer load and the energy re-
quirement is reduced.
Δp‑c is used in circuits with variable pressure and volume flows, e.g. underfloor heating or ceiling cooling. A
hydronic balancing is required in all circuits mentioned.
Index circuit Δp-c
An optimized constant differential pressure control is available for "index circuit Δp‑c". This differential
pressure control ensures supply in a widely branched, possibly poorly balanced system.
The pump takes into account the point in the system which is the most unfavorable to supply.
For this purpose, the pump requires a differential pressure sensor which is installed at this point ("index cir-
cuit") in the system.
The delivery head must be adjusted to the required differential pressure. The pump output is adjusted to this
point as required.
Differential pressure ∆p-v
The control triggers a linear change in the differential pressure setpoint the pump must ensure between re-
duced differential pressure H and H
The controlled differential pressure H increases or decreases with the flow rate.
The slope of ∆p-v characteristic curve can be adjusted to the respective application by setting the percent-
age of H (slope ∆p‑v characteristic curve).
set
NOTICE
Options "Nominal duty point Q" and "Slope of ∆p-v characteristic curve" are available in the
context menu [•••] of the setpoint editor "∆p-v differential pressure setpoint".
Options "Nominal duty point Q" and "Slope of ∆p-v characteristic curve" are available in the context menu
[•••] of the setpoint editor "∆p-v differential pressure setpoint".
Δp‑c is used in circuits with variable pressure and volume flows, e.g. radiators with thermostatic valves or
air-conditioning devices.
A hydronic balancing is required in all circuits mentioned.
Dynamic Adapt plus (factory setting – not for drinking water pumps)
The control mode Dynamic Adapt plus autonomously adjusts the pump output to the requirements of the
system. Setpoint adjustment is not necessary.
It is optimal for circuits whose design points are unknown.
The pump continuously adjusts its delivery rate to the requirements of the consumer and status of the open
and closed valves and thus significantly reduces the set pump energy.
Dynamic Adapt plus is used in consumer circuits with variable pressure and volume flows, e.g. radiators with
thermostatic valves or underfloor heating with room-controlled actuating drives.
Hydronic balancing is required in all circuits mentioned.
Installation and operating instructions • Wilo-Stratos MAXO/-D/-Z • Ed.02/2023-10
up to the maximum characteristic curve.
set
.
set
en-US
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