Panasonic U-16GE2E5 Test Run Manual page 14

Number units to connect
Number of units to connect
• Maximum possible number of outdoor units .................................... 30
• Maximum possible number of indoor units ...................................... 64
• Maximum possible number of centralized control devices .............. 10
(* Total number of each device within 1 link wire is up to 100.)
Wires
• Thickness : 0.5 mm
• Total length : Total maximum length of up to 1 km
• Precautions
1) To avoid incorrect operation, do not run the signal cable together with the power line cable.
2) Keep the separation distance of 50 mm or more from the power line cable for Sanyo air conditioning
equipment.
3) Keep the separation distance at 300 mm or more from other power line cables.
4) If the wires are to be run together within the distances described above, insert one of them in a conduit made
of iron.
5) When using a shielded wire, ground either one of the cables.
6) Do not use the same wire for the signal wires and power supply wires. (Figure 3)
7) Do not use a multi-core wire for a set of signal wires. (Figure 4)
8) Wiring
a) A bus system shall basically be used for multiple systems. (Figure 5)
There should be no more than 16 branch locations. (Figure 5)
Make sure wiring between branch locations and branch points is 2 m or more. (Figure 5)
If there will be 17 or more branches, split the system into two and then connect the wire. (Figure 6)
Not include in branch within 1 m. (Figure 7)
Use up to three wires for a branch. Four or more wires are prohibited. (Figure 8)
A branch after the branching of a wire is prohibited. (Figure 9)
Loop wiring is prohibited. (Figure 10)
b) A daisy chain system shall basically be used for a single system. (Figure 11)
• Terminal resistor
When linking multiple outdoor units, keep the terminal resistor of two units (SHORT), and set OPEN for the
other units. If a communication error occurs, keep the terminal resistor of the three units (SHORT).
2 2
to 2 mm
II - 6
*