Electrical control wiring
Concealed type indoor unit
Remove the electrical control box lid of the concealed type indoor unit, pull wires inside through
1.
incoming hole at the side of the control box, and connect live wire L to terminal 1, neutral line N
to terminal 2, earthing wire to copper earthing screw. Be sure to wire properly according to the
unit wiring diagram, and ensure fi rm connection.
Pull communication lines from other indoor unit or outdoor unit inside through the incoming hole
2.
at the side, and connect to CN4/CN5 terminals of the controller based on following relation:
RS485 wire sequence
A
B
Shielding layer
CN4/CN5 terminal
A
B
G
When matching the wired controller, pull communication line from the wired controller inside
3.
through the incoming hole at the side of the control box, and connect to CN3 terminal of the
controller.
After fi nishing the above wiring, close the junction box lid.
4.
Precautions:
All wiring should comply with the local laws and regulations;
1.
It is suggested that power line ≥ 1.5 mm
2.
2
. If electric heater is provided for the unit, the
specifi cation for power line should be improved accordingly;
It is suggested that conductors provided by Trane factory is used for the communication lines of
3.
the indoor and outdoor units. The shield twisted pair is 0.5 ~ 1.25 mm
2
, twist pitch is less than 10
cm;
Control signal has A and B polarities. Connection of different polarities is prohibited (A and B may
4.
not be connected);
While the power line is laid in parallel with the communication line, a certain distance must be
5.
retained.
Wired controller
Supporting rack of the wired controller base plate is shown in following fi gure. When being
1.
installed, the base plate must be fl ush with the wall surface.
AMS-SVX04A-EN
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