Wilo Rexa MINI3 Serie Notice De Montage Et De Mise En Service page 43

Installation and electrical connection
6.2.1 Stationary wet well installation
Fig. 2: Installation dimensions and switching points
Switching points
▪ 1 = Switch-on level (g)
▪ 2 = Switch-off level (f)
▪ 3 = Minimum water level for S1 operation, S3 operation below this level (e)
Installation dimensions
Dimensions in mm
Dimensions in inches
For stationary wet well installation, the pump is installed directly onto the pressure
pipe. Observe and adhere to the following points:
▪ The connected pressure pipe must be self-supporting. The pressure pipe must not be
supported by the pump.
▪ The pump may oscillate slightly during operation. These oscillations must be dissip-
ated via the pressure pipe.
▪ Ensure that the connection to the pressure pipe is stress-free – do not screw it in too
tightly.
▪ Seal pipe connections with Teflon tape.
▪ Install all specified valves in accordance with local requirements (gate valve, non-re-
turn valve).
▪ Install the pressure pipe so that it is protected from frost.
Installation and operating instructions Wilo-Rexa MINI3
1
2
min. a x b
a b c
450 450 500
18 18 20
3
d
d e
216 335
8.5 13
en
f g
113 416
5 16
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