Wilo Star-Z Série Notice De Montage Et De Mise En Service page 11

Open the stop valve
1
Connecting
Installation and operating instructions Wilo-Star-Z NOVA
5. Tighten the union nut again.
6. Turn slot (1) with a screwdriver so that it is
parallel to the direction of flow (only in the
case of the Star-Z NOVA A version)
Note: To close, turn the slot so that it is
across the direction of flow.
7. Fit the thermal insulation shell.
Caution: The plastic parts of the motor
may not be heat-insulated in order to protect
the pump from overheating.
8. Connect the pipework.
Caution: For the versions with stop and
non-return valves, these are already pre-
installed and sealed with a tightening torque of
15 Nm (hand-tight). Screwing with excessive
tightening torque destroys the valve screw con-
nection and the O ring.
When installing the valve, use a fixed spanner to
prevent twisting.
Installation
11