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[ II Restrictions ]
GBHWE1018A
2. System with two refrigerant circuits
(1) Sample control wiring
(2) Notes
1) Assign the sequential number to the indoor units.
2) Do not connect the terminal blocks (TB5) on the indoor
unitsthat are connected to different outdoor units with
each other.
3) Replacement of male power supply switch connec-
tor(CN41) must be performed only on one of the outdoor
units.
4) Provide grounding to S terminal on the terminal block for-
transmission line for centralized control (TB7) on only
one ofthe outdoor units.
5) When the power supply unit is connected to the trans-
mission line for centralized control, leave the male con-
nector on the female power supply switch connector
(CN41) as it is. (Factory setting)
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Maximum distance (1.25mm
2
[AWG16] or larger)
L1, L2 200m [656ft]
2) Transmission line for centralized control
Maximum line distance via outdoor unit.
(1.25mm
2
[AWG16] or larger)
L1+L31+L2 500m [1640ft]
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