Wilo Stratos MAXO Notice De Montage Et De Mise En Service page 65

9.2.3 Q-Limit Max
The additional control function "Q-Limit
sure control (∆p-v, ∆p-c), cumulated volume flow, temperature control (∆T control, T control)). It makes it
possible to limit the maximum volume flow to approx. 10% – 90%, depending on pump type. When the set
value is reached, the pump is controlled on the characteristic curve along the limit – never beyond.
CAUTION
Property damage caused by frost!
When using Q-Limit
quately supplied and freeze!
• Carry out hydronic balancing!
9.2.4 Q-Limit Min
The additional control function "Q-Limit
sure control (∆p-v, ∆p-c), cumulated volume flow, temperature control (∆T control, T control)). It makes it
possible to ensure the minimum volume flow to a set value 10% – 90% of Q
teristic curve. When the set value is reached, the pump is controlled on the characteristic curve along the
limit until the maximum delivery head is reached.
NOTICE
The additional "Q-Limit
Flow Stop" control function!
9.2.5 Nominal duty point Q
The nominal duty point is set using the context key.
The optionally configurable nominal duty point for the differential pressure control ∆p‑v significantly simpli-
fies adjustment by adding the required volume flow at the design point.
The additional input of the required volume flow at the design point ensures that the ∆p-v characteristic
curve runs through the design point.
The slope of the ∆p-v characteristic curve is optimized.
9.2.6 Gradient ∆p-v characteristic curve
The gradient of the ∆p-v characteristic curve is set using the context key.
The additional function "Gradient ∆p-v characteristic curve" can be used for the differential pressure control
Δp‑v. A factor can be set on the pump to optimize the Δp-v control characteristic. The factor 50% (½ H
pre-set at the factory.
NOTICE
In some installations with special pipe network characteristics, there may be inadequate or
excessive supply. The factor reduces (< 50%) or increases (> 50%) the Δp-v delivery head at
Q=0 m³/h.
• Factor < 50%: ∆p‑v characteristic curve becomes steeper.
Installation and operating instructions • Wilo-Stratos MAXO/-D/-Z • Ed.02/2023-10
" can be combined with other control functions (differential pres-
Max
in non-hydraulically balanced systems, some areas can be inade-
Max
" can be combined with other control functions (differential pres-
Min
" control function cannot be combined with the additional "No-
Min
within the hydraulic charac-
Max
en-US
) is
set
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