User Menu OptionsPage 32Repeat this step for any other zones you wish to omit (or change to beincluded).3. Press to store changes.Using shunt groups(Not available for i-on Compact.)About shunt groupsA shunt group is a collection of zones that can be “shunted”. “Shunting” isanother way of preventing a zone from causing an alarm. The differencebetween shunting and omitting a zone is the length of time that the controlunit ignores the zone. When you omit a zone (see the previous section),the control unit ignores it for one setting/unsetting cycle. When you shunt azone, the control unit ignores it until you unshunt it.The installer sets up the shunt groups, each of which can consist of one ormore zones. You should agree with the installer what zones need to go intoeach shunt group, and record that information. A zone can be in more thanone shunt group.Once the shunt groups are defined, there are three ways of shunting them:a) Master and admin users can use the Shunt Groups option to shunt allzones in selected shunt group. A master user can select any shuntgroup. In a partitioned system, an admin user can select any shuntgroup in the same partition as the admin user.b) A master user can use the Users – Add User option to add a ShuntCode user type and assign a shunt group to that user. When the codeis used at a keypad, all zones in the shunt group are shunted. Whenthe code is used again, the zones are unshunted.c) The installer can fit a key switch to a special zone, and link the zone toone or more shunt groups. Turning the key shunts all zones in theshunt groups. Turning the key again unshunts them.When a user tries to set the system or a partition where zones are shunted,the keypad displays “Shunt Active tick to continue”. If the user presses ,the system continues to set.