GE 18 Owner's Manual page 26

Installing the water line.
Read these instructions completely and carefully.
Install the Shutoff Valve
1
Install the shutoff valve on the nearest frequently used drinking water line.
2
Choose a location for the valve that is easily accessible. It is best to connect
into the side of a vertical water pipe. When it is necessary to connect into a
horizontal water pipe, make the connection to the top or side, rather than at
the bottom, to avoid drawing off any sediment from the water pipe.
3 Drill a 1/4" hole in the water pipe, using a sharp bit. Remove any burrs
resulting from drilling the hole in the pipe.
4 Fasten the shutoff valve to the cold water pipe with the pipe clamp.
5 Tighten the clamp screws until the sealing washer begins to swell.
Do not overtighten or you may crush the copper tubing.
26
Pipe Clamp
Saddle-Type Shutoff Valve
Washer
Inlet End
Vertical Cold Water Pipe