Connecting the Power Cable

Connecting the Equipotential Ground Cable

Figure 3-42 shows the equipotential ground position.

Figure 3-42 Equipotential ground position

(1) Equipotential ground position for top cabling

(2) Equipotential ground position for bottom cabling

Connecting the Power Cable to an Indoor Unit (Single Power Supply)

1. Route the external power cable through the cabinet cable hole to the L1, L2, L3, and N ports of the AC1 terminal on the indoor unit.

   When there is only one power supply, the power cable must be connected to the primary route AC1.

   Figure 3-43 Routing cables for the single power supp
   

2. Connect the PE cable to the ground screw, as shown in Figure 3-43.
3. Secure the cable on the post of the cabinet with cable ties.

Connecting the Power Cable to an Indoor Unit (Dual Power Supplies)

1. Route the external power cable through the cabinet cable hole to the L1, L2, L3, and N ports of the AC1 and AC2 terminals on the indoor unit respectively.

   When there are two power supplies, the power cables must be connected to the primary route AC1 first and then connected to the secondary route AC2.

   Figure 3-44 Routing cables for the dual power supplies
   

2. Connect the PE cable to the ground screw, as shown in Figure 3-44.
3. Secure the cables on the post of the cabinet with cable ties.

Connecting the Power Cable to an Outdoor Unit

1. Route the outdoor unit power cable through the cabinet cable hole to the L1, L2, L3, and N ports of the AC3 terminal on the indoor unit.
   Figure 3-45 Connecting the power cable to an outdoor unit
   

   The preceding figure takes the power cable installation of an outdoor unit with the single power supply as an example, which is the same as that of an outdoor unit with dual power supplies.

2. Connect the PE cable to the PE terminal at the bottom of the outdoor unit, as shown in Figure 3-45.
3. Secure the cable on the post of the cabinet with cable ties.