Applications
287
IDEC SmartRelay Manual
8.7 Service water pump
The use of rainwater as an addition to the drinking water sup-
ply is gaining importance. This saves cost and helps to pro-
tect the environment. For example, rainwater can be used
for:
• Washing clothes
• Irrigation system for gardens
• Watering indoor plants
•Car wash
• Toilet flushing installations
The sketch below illustrates how such a rainwater utilization
system is operated:
S1
S2
S3
S4
M1
K4
Rainwater
supply line
Drinking water supply line
Pressure switch
Control in the
distribution box
Pressure tank
Pump
Rainwater reservoir
Drinking water supply Off
Drinking water supply On
Dry-run protection Off
Dry-run protection On
Service water
connection
The rainwater is collected in a reservoir. From the reservoir,
a pumping station supplies a respective line system. From
there it can be tapped in the same way as normal drinking
water. If the reservoir should run dry it can be topped up with
drinking water.
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com
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