Operating Modes; Stratos, Stratos-D, Stratos-Z - Wilo Stratos Serie Instrucciones De Instalación Y Funcionamiento

The main benefits of electronic control are:
• it saves energy while reducing operating costs,
• it reduces noise caused by the excess flow,
• it does not require pressure bypass valves.
This wet rotor pump is designed to have all rotating parts surrounded by the
liquid being pumped. The pump is maintenance free and requires no further
maintenance after the air bleeding procedure during the initial start-up (no
after start-up maintenance).
High-efficiency pumps of the Wilo-Stratos-Z series are adapted specifically to
the operating conditions in secondary hot water circulation systems due to the
materials selected and their design. All materials which come into contact with
the fluid are approved in accordance with NSF 61 Annex G.

6.2.1 Operating modes

The Stratos series can be operated in the operating modes "Heating" or
"Cooling/ air-conditioning". The two operating modes are distinguished from
one another in their tolerance for faults in the handling of fault signals that
occur.
"Heating" operating mode:
Faults are handled in a tolerant fashion (as is normally the case), i.e. depending
on the type of fault, the pump does not signal a fault until the same fault has
occurred repeatedly within a particular time period. Error matrix: "HV"
"Cooling/air-conditioning" operating mode:
For all applications for which each fault (in the pump or the system) must be
recognised quickly (i.e. air-conditioning applications).
Each fault, with the exception of the fault E10 (blocking), will be signalled at
once (< 2 sec.). In the event of a blocking (E10), various restart attempts will be
carried out, which means that in such cases no fault message will occur until
after a maximum of 40 sec. Error matrix: "AC"
Both operating modes distinguish between faults and warnings. In the event of
a malfunction, the motor is switched off, the error code on the monitor is
displayed and the malfunction is signalled with the red LED.
Malfunctions always lead to activation of the FC (fault contact).
In the case of twin-head pump management (twin-head pump or 2x singlehead
pumps), the standby pump starts within the time period specified below
following the appearance of the fault.

Stratos, Stratos-D, Stratos-Z

1.25x3-20, 1.25x3-25
1.25x3-30, 1.25x3-35, 1.5x3-25
1.5x3-40, 2x3-30, 2x3-35, 2x3-40
3x3-30
3x3-40
Installation and operating instructions Wilo-Stratos/-D/-Z
English
Starting time
approx. 9 sec
approx. 4 sec
approx. 4 sec
approx. 3 sec
approx. 7 sec
9