User's Manual

Figure 5:1 Daisy Chain Configuration
Daisy chaining the grounds of your units will cause problems such as ground loops,
high resistance paths between units, and reduced ability for dealing with lightning.
Instead, you should use a star conf iguration, as shown in Figure 5:2 Star
Conf iguration. In this configuration, each outdoor unit’s grounding lug is connected to a
common grounding point that is then connected to the earth ground.
Figure 5:2 Star Configuration
5.4.3 Lightning Protectors
The use of lightning protectors and surge suppressors is extremely important and,
although your LibraPlus equipment will operate without them, it is highly recommended
that you make use of them. Lightning protectors and surge suppressors are used to aid
in the protection of your outdoor units against lightning damage and static discharge.
During installation, it is important to note that all lightning protection devices have a
surge (or cable-facing) side and an equipment facing side, as shown in Figure 5: 3
Surge Suppressor Sides. The equipment side generally faces the outdoor unit or the
indoor power adapter. The surge side faces the other surge suppressor.
LibraPlus 5860 User Guide Pre-installation: Grounding Page 23 of 95