Definition Of The Symbols On The Lc Display - Wilo Stratos 1.25x3-20 Notice De Montage Et De Mise En Service

• In the event of a break in communication: The slave pump runs at the last set
value of the master prior to the interruption.
• Pump swap: If only one pump is operational (duty/standby, peak- or low-load
operation), the pumps are swapped after every 24 hrs' of actual operating time.
Both pumps are running at the time of the pump alteration in order to ensure
that operation is not interrupted.
NOTE: Both pumps will always be running if both the manual control mode and
the synchronous mode are active at the same time.
No pump alteration takes place. No pump alteration takes place during the
active night reduction after 24 h of effective running time.
• FC: The collective fault contact (FC) of the master can be connected to a central
control point. In this case, contact is only established with the master. The
reading is valid for both pumps.
As an option, the error message contacts of master and slave can be
programmed as single fault signal with the IR module. For the single fault
signals, contact must be established with each pump.

6.2.6 Definition of the symbols on the LC display

Symbol
auto
auto
(no symbol)
Installation and operating instructions Wilo-Stratos /-D/-Z
Definition
Control mode; automatic switch-over to night setback mode is enabled.
Night-time mode is activated at minimum heat output requirement
(default).
Pump runs in night-time mode (night setback operation) at min. speed.
Automatic switch-over to night setback mode blocked, i.e. pump runs in
standard mode only.
Night setback mode activated via PLR/LON/CAN interface Ext.Min,
regardless of the system temperature.
Pump runs in warm-up mode at maximum speed. The setting can be
activated only via PLR/LON/CAN.
Pump switched on (default).
Pump switched off.
Differential pressure set value set to H = 18.0 ft. (example)
Control mode 'p-v, regulated to variable differential pressure set value
(fig. 6) (default).
Control mode 'p-c, regulated to constant differential pressure set value
(fig. 7).
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