Wilo Atmos GIGA-N, Installation And Operating Instructions Manual, Page: 57 / 1064

Installation and electrical connection en
Installation and operating instructions Wilo-Atmos GIGA-N 57
Prepare drilled holes for the anchor bolts. Position pipe sleeves vertically in the base at
the corresponding points. Diameter of the pipe sleeves: Around 2½ x the diameter of
the screws. This allows the screws to be moved in order to achieve their final positions.
Wilo recommends initially pouring the base up to about 25 mm below the planned
height. The surface of the concrete base must be well contoured before curing. Remove
the pipe sleeves after the concrete cures.
When the baseplate is poured out, insert steel rods vertically into the base at regular in-
tervals. The required number of steel rods is dependent on the size of the baseplate.
The rods must project into the baseplate by up to 2/3.
6.5.2 Preparing the baseplate for an-
choring
Fig. 6: Shims on the base surface
Fig. 7: Levelling screws on the base surface
▪ Thoroughly clean the base surface.
▪ Place shims (approx. 20 – 25 mm thick) on every screw hole on the base surface.
Alternatively, levelling screws can also be used.
▪ For a length spacing of the fixation bores ≥ 800 mm, shims should be additionally
placed in the middle of the baseplate.
▪ Apply the baseplate and level in both directions with additional shims.
▪ Align the unit when installing on the base using a spirit level (at the shaft/pressure
port).
The baseplate must be horizontal; tolerance: 0.5 mm per metre.
▪ Fit anchor bolts in the provided drilled holes.
NOTICE
The anchor bolts must fit in the fastening bores of the baseplate.
They must meet the relevant standards and be sufficiently long, so that a firm fit in
the base is guaranteed.
Fig. 8: Levelling and aligning the baseplate
Fig. 9: Anchor bolt
▪ Pour in anchor bolts with concrete. After the concrete has set, tighten the anchor bolts
evenly and firmly.
▪ Align the unit so that the pipes can be connected to the pump stress-free.
6.5.3 Pouring out the baseplate
The baseplate can be poured out after fixing. The process of pouring out reduces vibra-
tions to a minimum.
▪ Wet the base surface before pouring out the concrete.
▪ Use a suitable, non-shrink mortar for pouring out.
▪ Pour the mortar through the openings in the baseplate. Be sure to avoid hollow spaces.
▪ Plank the base and baseplate.
▪ After curing, check the anchor bolts for a tight fit.
▪ Coat the unprotected surfaces of the base to protect from moisture.