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Installation and operating instructions Wilo-DrainLift XL
29
The discharge piping is to be installed so that it is frost-proof.
Mount the gate valve (DN 80) to the pressure connection of the unit (available as an acces-
sory, nuts, washers, flat gasket included). Support the weight of the valves.
CAUTION! Risk of property damage!
Using valves which are not Wilo accessories may cause malfunctions or damage to the
product.
Afterwards, connect the pressure pipeline directly to the gate valve (flange piece, flexible
hose section, flat gasket and connection elements included).
7.3.2 Inlet connection
Install the inlet pipes so that they can run empty of their own accord.
Only introduce the main inlet pipe DN 150 or DN 100 into the tank in the horizontal surface
(Fig. 5).
• Select the position and pipe installation so that surge-like water entry and strong air entry
are avoided as much as possible.
• It is possible to connect the inlet pipe into the vertical surface (above the horizontal con-
nection surface).
Leave out the area of the level sensor (Fig. 5, no. 1) in this case!
CAUTION! Risk of malfunctions!
Surge-like water entry can impair the function of the unit.
Connect the inlet pipe so that the entering water flow does not hit the float of the level
control directly.
Fig. 4: Flexible discharge pipe connection
To avoid the transfer of forces and vibrations between the
unit and the discharge piping, the connection should be
flexible. Therefore keep a distance between the flange piece
and pressure pipe (Fig. 4).
1
Pressure pipe
2
Hose sleeve
3
Flange piece
4
Keep a distance of approx. 40-60 mm
min. 40
1
3
2
4
Fig. 5: Permissible surfaces for the main inlet port (DN 150 / DN 100)
CAUTION! Risk of property damage!
Connecting the inlet pipe outside of the
marked surfaces can lead to leakage, malfunc-
tions and damage to the product.
DN150
(DN 100)
1
Summary of Contents for DrainLift XL
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