Wilo Stratos GIGA2.0-D, Инструкция по установке и эксплуатации

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en Setting the control functions
188 WILO SE 2021-12
ing again. When the volume flow increases again, the pump continues running in its set
control mode in normal operation.
NOTICE
A volume flow increase relative to the set minimum volume flow “No-Flow Stop
Limit” is checked within a time interval of 10 s.
The reference volume flow Q
ref
can be set between 10 % and 25 % of the maximum
volume flow Q
Max
depending on the pump size.
Field of application of No-Flow Stop:
a pump in a consumer circuit with control valves in heating or cooling (with radiators,
fan heaters, air-conditioning devices, underfloor heating/cooling, ceiling heating/cool-
ing, concrete core heating/cooling) as an additional function for all control modes ex-
cept Multi-Flow Adaptation and volume flow Q-const.
NOTICE
This function is deactivated in the factory settings and must be activated if required.
NOTICE
The additional control function “No-Flow Stop” is an energy-saving function. Redu-
cing unnecessary running times saves electrical pumping energy.
NOTICE
The additional “No-Flow Stop” control function is available for suitable applications
only (see “Pre-defined applications in the setting assistant” [
} 198] section)! The
additional control function “No-Flow Stop” cannot be combined with the additional
control function “Q-Limit
Min
”!
11.2.2 Q-Limit Max
The additional control function “Q-Limit
Max
” can be combined with other control func-
tions (differential pressure 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. 25 % – 90 %, depending on pump type. When the set value is reached, the
pump is controlled on the characteristic curve along the limit – never beyond.
NOTICE
When using Q-Limit
Max
in non-hydraulically balanced systems, some areas can be in-
adequately supplied and freeze!
ƒ
Carry out hydronic balancing!
11.2.3 Q-Limit Min
The additional control function “Q-Limit
Min
” can be combined with other control func-
tions (differential pressure control (∆p-v, ∆p-c), cumulated volume flow, temperature
control (∆T control, T control)). This makes it possible to ensure a minimum volume
flow of 15 % – 90 % of Q
Max
within the hydraulic characteristic 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
Min
” control function cannot be combined with the additional
“No-Flow Stop” control function!
11.2.4 Nominal duty point Q
The optionally configurable nominal duty point for the differential pressure control
∆p‑v significantly simplifies adjustment by adding the required volume flow at the