Trane 09CH-FIXED-A1, Service Manual

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2.6 ODU Installation
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The outdoor unit should be installed on a solid
wall and fastened securely.
●
The following procedure must be observed
before connecting the pipes and connecting
cables : decide which is the best position on
the wall and leave enough space to be able to
carry out maintenance easily.
●
Fasten the support to the wall using screw
anchors which are particularly suited to the type
of wall;
●
Use a larger quantity of screw anchors than
normally required for the weight they have to
bear to avoid vibration during operation and
remain fastened in the same position for years
without the screws becoming loose.
●
The unit must be installed following the national
regulations.
Outdoor unit condensed water drainage
(only for heat pump models)
The condensed water and the ice formed in the
outdoor unit during heating operation can be drained
away through the drain pipe.
1) Fasten the drain port in the 25mm hole placed in
the part of the unit as shown in the picture.
2) Connect the drain port and the drain pipe.
Pay attention that water is drained in a suitable
place.
Electronic connections
1. Take the cover away.
2. Connect the cable wires to the terminal board
using the same numbering as in the indoor unit.
3. For the electrical connections, see the wiring
diagram on the back of the cover
4. Fasten the cables with a cable-clamp.
5. An efficient earth connection must be ensured.
6. Replace the covers.
Wiring diagram on the back of the cover
Screw
Remove the upper cover
Outdoor unit
Connecting the pipe
Screw the flare nuts to the outdoor unit coupling
with the same tightening procedures described for
the indoor unit.
Note: If the tightening torque is not sufficient, there
will probably be some leakage. With excessive
tightening torque there will also be some leakage,
as the flange could be damaged.
2.7 Vacuum and gas leakage test
1. Use vacuum Pump
1) Air and humidity left inside the refrigerant circuit
can cause compressor malfunction. After having
connected the indoor and outdoor units, bleed the
air and humidity from the refrigerant circuit by using
a vacuum pump.
2) Open the piezometer and operation for 10-
15minutes to check if the pressure of piezometer
remains in -0.1Mpa.
3) Close the vacuum pump and maintain this
status for 1-2min to check if the pressure of
piezometer remains in -0.1Mpa. If the pressure
decrease, there may be leakage.
4) Remove the piezometer, open the valve core
of liquid valve and gas valve completely.
5) Tighten the screw caps of valve and
connection pipes
flare nuts
liquid tap
gas tap
indoor unit
protection caps
Liquid valve
gas valve
service port nut
tap
Air Conditioner Service Manual
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