Suction Pipe Connection; Pressure Hose Connection - Graf AQUA-CENTER SILENTIO 15/4 Notice D'installation Et D'entretien

4.4

Suction pipe connection

A 1" suction pipe is installed in an empty conduit that rises steadily without sagging or bend-ing downward
to the connection at the mains water supply point. If this proves to be not pos-sible then an air bleeding
valve must be installed at the highest point.
The connection to the SILENTIO back-up supply unit is by way of the 3 way switch-over valve which has at
its' top a brass 90° elbow connection and the enclosed 1" reinforced hose. The installation of a shut-off
valve in the suction pipe will make future maintenance work less complicated.
4.5

Pressure hose connection

The connection of the pressure hose to the brass 90° elbow on the pressure and flow rate sensor using the
2 enclosed 1" diameter reinforced hoses, these are then fed out through the top of the unit. The further
installation to the various individual outlets etc is to be completed with commercial installation pipes (only
plastic, use no copper etc). A shut-off valve installed in the pressure lines make any future maintenance
work less complicated.
info@graf-online.de
www.graf-online.de
4. Installation and assembly
page 19 of 44