Rainwater Pump; A Rainwater Pump - Siemens LOGO! Series Manual

5.6 Rainwater pump

Rainwater is being used increasingly in homes in addition to drinking water.
This saves money and is environment-friendly. You can use rainwater, for
example, for:
S
Washing clothes
S
Watering the garden
S
Watering house plants
S
Washing the car
S
Flushing the toilet
The following drawing illustrates how a system for using rainwater works:
Rainwater
K4
supply
Rainwater
collecting tank
The rainwater is caught in a collecting tank, from which it is pumped into a
pipe system. The rainwater can then be taken from this in the same way that
drinking water can. If the tank should ever run dry, it can be supplied with
drinking water.
LOGO! manual
EWA 4NEB 712 6006-02
Drinking water supply
Pump
Š Š Š
M1
Š Š Š
S2
Drinking water supply off
S3
Drinking water supply on
Run-dry protection off
S4
Run-dry protection on
Pressure switch
S1
Î Î Î
Î Î Î Î Î Î
Õ Õ Õ Î Î Î Î Î Î
Õ Õ Õ Õ Õ Õ
Õ Õ Õ Õ Õ Õ
Pressure tank
Õ Õ Õ
Applications
Control in
distribution
box
Rainwater pipe
97