Trane 4TXM2318BF300AA Service Manual page 64

• Seal the thread hole with heat insulating materials to avoid condensation.
• Signal line and power line are separately independent, which can't share one line. Signal line and power line
spacing greater than 100mm.
• 5 butt lines (1.5mm) are equipped in the machine before delivery, which are used in connection between the valve
box and the electrical system of the machine. The detailed connection is displayed in the circuit diagram.
• The power cord must go through the wire hole from the outside into the machine, the wire holes need to be sealed
with rubber ring to prevent the wear of the power line insulation sheath; the use of the process should pay attention
to theprotection of the power cord. Prevent sharp objects from damaging the insulation of the power cord. Damage
to the power cord may cause fever, fire and other accidents.
Connecting
1. Connecting circular terminals:
The connecting method of circular terminal is shown in the Fig. Take off the screw,
connect it to the terminal tier after heading it through the ring at the end of the
lead and then tighten it.
2.Connecting straight terminals:
The connection methods for the circular terminals are shown as follows: loosen the screw before putting the line
terminal into the terminal tier, tighten the screw and confirm it has been clamped by pulling the line gently.
3.Pressing connecting line
After connecting line is completed, press the connecting line with clips which
should press on the protective sleeve of the connecting line.
4.Electronic control box connection operation method
First, remove the screw of the fixed electric control box, pull out the electric control box, and then remove the
electric control box cover fixing screw, take off the electric control box cover (both hands press and hold the button
at the same time). Signal line through the machine through the hole, and then through the electronic control box
hole into the box body, pay attention to the separation of strength. Connect the electric control box cover and push
the electric control box back to the machine. Use screws to fix.
control box cover
Indoor unit
terminal block
Outdoor unit
terminal block
Outdoor unit
terminal block
Power supply
1PH,220-240V~,50/60Hz
Cover
screw
The electric
Cover
fastening
screw
The electric
control box cover
fastening
Indoor unit
terminal block
Power supply
1PH,220-240V~,50/60Hz
Power cord (as shown in
the line through the clamp
and press)
Weak current
Strong electricity
Weak current
Strong electricity
Indoor unit
Indoor unit
terminal block
terminal block
Outdoor unit R S T N
terminal block
Y/G
Outdoor unit R S T N
Power supply
380-400V, 3N~,50/60Hz
terminal block
Power supply
380-400V, 3N~,50/60Hz
62
wrench
wrench
Connecting
circular
Connecting
terminals:
circular
terminals:
terminal tier
terminal tier
pressing clip
pressing clip
correct
correct
wrong
pressing
pressing pressing
Power cord (as shown in
the line through the clamp
and press)
1 2 3
1 2 3
Y/G
1 2 3
Y/G
1 2 3
Y/G
wrong
pressing
Y/G
Y/G