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Fig. 7: ventilation connection DN 70
Fig. 8: Connection of diaphragm hand pump
Installation and operating instructions Wilo-DrainLift XL
According to EN 12056-4, a gate valve (accessory) is required in the inlet pipe in front of the
tank if the unit is installed inside the building in (Fig.9).
7.3.3 Bleeding (DN 70)
EN12050-1 stipulates that the unit must be connected to a ventilation line which vents via
the roof and is absolutely necessary for the perfect working order of the unit. The connec-
tion is made on the connecting piece DN 70 to the tank roof using the enclosed Konfix
connector. For this purpose, the base of the connecting piece DN 70 is sawn off about
15 mm beyond the top edge of the connecting piece and above the lip (see Fig. 7). Remove
any burrs and excess material. Push the Konfix connector up to the inner collar and fasten
with the enclosed hose clip. Afterwards, open by pulling off the tag and pushing in the
venting pipe with some lubricant. Secure the venting pipe against slipping out using
clamps, and always install with a downward incline toward the unit.
7.3.4 Emergency drain connection (diaphragm hand pump)
It is always recommended to install a diaphragm hand pump (accessory) for draining the
tank in an emergency. The suction line for the diaphragm hand pump (outer diameter
50 mm) is connected using one of the two connecting pieces (Ø 50 mm) on the front side
of the tank (Fig. 8).
a.
15
b.
1. Saw off the base of the connecting piece DN 70 – cut-
ting edge 15 mm beyond the top edge of the connecting
piece and above the lip
2. Remove burrs and any excess material
3. Push on the Konfix connector and secure it
4. Open the Konfix connector – pull off the tag
5. Push in the venting pipe – use lubricant if necessary
Remove the base of the connecting piece
To do this, either
a. use a saw
Cut edge about 15 mm from the base of the connecting pipe
and before the lip
Remove burrs and any excess material.
or
b. use a suitable keyhole saw
Remove burrs and any excess material.
English
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