GMV5 Compact Series VRF Outdoor Unit
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please adjust power cord model according to the nation standard (GB/T 16895.15-2002); circuit breaker
model is based on the condition that environment temperature is 40℃, if the actual condition doesn’t
agree with above condition, please adjust circuit breaker model according to the circuit breaker
specification.
⑤ The rated current value of air switch should be more than the maximum current value of unit but less
than next wire load.
⑥ If air switch was installed at a changing temperature place, such as coordinate installation, poor radiator,
and higher environment temperature, air switch should be considered falling capacity.
⑦ The load of electrical wire has a relation with its installing way, environment temperature, material of
electrical wire, and fire-resistant grade. If all the above conditions changed, the diameter of electrical
wire should be chosen again.
4.6.3 Connection of Power Cord
(1) Power cord cross through rubber ring, and is connected to the positions on wiring board that are marked with
“L1, L2, L3, N” and the ground screw nearby.
(2) Use cable ties to tie the cable securely.
(3) If units are typeⅠelectrical appliances, they must be reliably grounded.
(4) The green-yellow wire within units is ground wire. Do not use it for other purposes. Nor should it be cut off or
secured by tapping screws. Otherwise, it may cause electric shock.
(5) Ground resistance must be in accord with requirements of local standard.
(6) Power supply at user side must have reliable ground terminal. Do not connect ground wire to the following
places:
1) water pipe; 2) gas pipe; 3) drainage pipe; 4) other places that are considered by professionals as
unreliable.
4.7 Communication Wiring
4.7.1 The Way of Communication Wiring
(1) Open the wiring lid of indoor and outdoor units respectively. The communication wires come through the
appointed orifice to the wiring box. Please contact indoor unit with outdoor unit according to the units circuit
diagrams. And the power cord model is determined by the capacity of power supply and the place for
installing the units.
(2) Connect the communication wires according to Fig.18.
(3) When installing the units, please divide communication wires from power cord and make sure the least
distance between communication wires and power cord should be more than 20cm, otherwise the units
communication cannot work normally.
(4) Connection between indoor unit and outdoor unit board: electric wires come through rubber loop, and
communication wires are connected on the port signed with “D1，D2”. Communication wiring among indoor
units uses tandem way, and two sides of communication wire should be around with magnetic loop.
(5) After making sure communication wiring is right, please press all the electric wires with line pressing card
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