Connecting The Outlet Pipe; Installing The Float Switch - Grundfos SCALA1 System Instructions Manual

[m]
9
8
7
6
5
4
3
2
1
0
4 8 12 16 20 24 28 32 36 40
Maximum inlet pipe length (horizontal axis)
according to the suction lift (vertical axis)

3.5 Connecting the outlet pipe

Install an on/off tap upstream of the
float switch to cut off the mains water
supply in case of breakage or
malfunction so that maintenance can be
carried out safely.
1. Connect the outlet pipe to the 1-inch connector
with the supplied hose as shown below.
2. Fix the pipe to the wall with a suitable bracket.
10

3.6 Installing the float switch

5
[m]
Installing the float switch
Pos. Description
1 Inlet pipe
2 Rainwater tank
3 Strainer
4 Float switch
5 Counterweight
6 Water level
The float switch must be installed in the rainwater
tank. Proceed as follows:
1. Place the float switch as shown in the illustration
above.
2. Adjust the counterweight so that there is a
distance of at least 20 cm between the float switch
and the counterweight.
3. After adjusting the float switch, make sure that the
cable is protected along its entire length:
a. Place the cable in a casing tube.
b. Reconnect the float switch cable at the control
box.
1 2
6 4
The float switch must change the
contact at least 15 cm before the
inlet strainer fills with air.
3