Trane MCX 512 GB, MCX 518 GB, MCX 524 GB, MCX 530 GB, MCX 536 GB Installation Manual
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February 2009 MS-SVN015-EN
Installation Manual
NEW STYLUS
TM
Split System, 1-5 Tons
Convertible Type
MCX Series 50/60 Hz
50 Hz Models
Cooling Only
MCX 512 GB
MCX 518 GB
MCX 524 GB
MCX 530 GB
MCX 536 GB
MCX 042 GB
MCX 048 GB
MCX 060 GB
60 Hz Models
Cooling Only
MCX 512 G1
MCX 518 G1
MCX 524 G1
MCX 530 G1
MCX 536 G1
MCX 042 G1
MCX 048 G1
MCX 060 G1
60 Hz Models
Cooling/Heating
MCX 512 G1E
MCX 518 G1F
MCX 524 G1B
MCX 530 G1H
MCX 536 G1J
MCX 042 G1J
MCX 048 G1K
MCX 060 G1L
50 Hz Models
Cooling/Heating
MCX 512 GBE
MCX 518 GBF
MCX 524 GBB
MCX 530 GBH
MCX 536 GBJ
MCX 042 GBJ
MCX 048 GBK
MCX 060 GBL
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General Information
General Information
This Installation Manual is given as
a guide to good practice in the
installation by the installer of MCX
mini-split system. Installation
procedures should be performed in
the sequence that they appear in this
manual.
For installing the unit to operate
properly and reliably, it must be
installed in accordance with these
instructions. Also, the services of a
qualified service technician should
be employed, through the
maintenance contract with a
reputable service company.
Read these Installation Instructions
completely before installing the air
conditioning system.
About this Manual
Cautions appear at appropriate
places in this Instruction Manual.
Your personal safety and the proper
operation of this machine require
that you follow them carefully.
The Trane Company assumes no
liability for installations or servicing
performed by unqualified personnel.
All phases of the installation of this
air conditioning system must
conform to all national, provincial,
state and local codes.
About the Unit
These MCX units are assembled,
pressure tested, dehydrated,
charged and run tested before
shipment. The information contained
in this manual applies to MCX units
are designed to operate in cooling
mode only and in cooling or heating
modes.
Trane MCX series of mini-split
systems offer three styles of
installation: floor, low wall and under
ceiling with both LCD wireless
remote control or wired control.
Trane MCX series provide flexibility
and savings.
Note: For model MCX 042, MCX 048
and MCX 060, there are only two
styles of installation: under ceiling
and low wall.
Reception
On arrival, inspect the unit before
signing the delivery note. Specify any
damage of the unit on the delivery
note, and send a registered letter of
protest to the last carrier of the
goods within 72 hours of delivery.
Notify the dealer at the same time.
The unit should be totally inspected
within 7 days of delivery. If any
concealed damage is discovered,
send a registered letter of protest to
the carrier within 7 days of delivery
and notify the dealer.
Warning
Warnings are provided at
appropriate places in this manual to
indicate to installers, operators and
service personnel of potentially
hazardous situations which, if not
avoided, COULD result in death or
serious injury.
Caution
Cautions are provided at appropriate
places in this manual to indicate to
installers, operators, and service
personnel of potentially hazardous
situations which, if not avoided, MAY
result in minor or moderate injury or
malfunction of the unit.
Warranty
Warranty is based on the general
terms and conditions by country. The
warranty is void if the equipment is
modified or repaired without the
written approval of The Trane
Company, if the operating limits are
exceeded or if the control system or
the electrical wiring is modified.
Damage due to inappropriate
installation, lack of knowledge or
failure to comply with the
manufacturer’s instructions, is not
covered by the warranty obligation.
If the installation does not conform
to the rules described in Installation
Manual, it may entail cancellation of
warranty and liabilities by The Trane
Company.
Important
This document is customer property
and is to remain with unit. Please
place in service information pack
upon completion of work. These
instructions do not cover all
variations in systems, nor do they
provide for every possible
contingency to be met in connection
with installation. Should further
information be desired or should
particular problems arise which are
not covered sufficiently in this
manual, the matter should be
referred to your authorized Trane
dealer.
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Contents
General Information 2
Typical Installation 4
Location and Preparation of Units 5
Unit Installation 6
Connection of Refrigerant Tubing 7
Condensate Drain Piping 9
Electrical Installation 10
Remote Control Installation 11
Typical Wiring Diagram 12
Dimensional Data 21
Notes 23
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Typical Installation
Note: For models MCX 042, MCX 048, MCX 060
there are only two styles of installation: under ceiling and low wall
Ceiling
mounted
Outdoor unit
Indoor unit
Floor mounted
Return air grille contains air filter
Refrigerant tubing/wiring
Drain
Return air grille
contains air filter
Supply air grille
Adjustable louvers direct air
Supply air grille
Adjustable louvers direct air
Low wall mounted
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Location and Preparation of Units
1. Select an appropriate position
that allows every corners of the
room to be uniformly air
conditioned and where it is easy
to route the refrigerant tubing.
2. Ensure that the floor or ceiling
construction is sufficient to fully
support the weight of the indoor
unit.
3. Consideration must be given to
assure an unobstructed flow of
supply and return air.
4. Refrigerant tubes between
indoor and outdoor units should
be as short as possible.
5. Length of the condensate drain
hose should be kept as short as
possible (Figure 1).
6. Recommended service
clearance as shown in figure
2, 3 and 4.
7. Do not install unit in direct
sunlight or near other heat
sources as this may affect
performance. Do not allow
outside air to directly enter unit
or condensate may form at the
unit’s discharge.
Note: For MCX042-MCX060 the
unit should be installed over the floor
at least 20 cm.
Figure 4
Figure 3
Figure 2
Maintenance area
(Celling mounted)
Min.
30 cm.
Min.
20 cm.
Min.
20 cm.
Min.
30 cm.
Min.
20 cm.
Maintenance area
(Floor mounted)
Figure 1
Min. 120 cm.
Min.
30 cm.
Min.
20 cm.
Min.
20 cm.
Maintenance area
(Low wall mounted)
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0.83"(21)
0.83"(21)
8.5"(215)
B
A
Unit Installation
Indoor Unit
1. Select a location to route tubing,
wiring and drain pipe between
the indoor and outdoor units.
2. Make a hole in the wall using a
key hole saw or hole-cutting drill
attachment.
The hole should be made at a
slight downward slant to the
outdoor side (Figure 5).
Before cutting, check that no pipes
or studs are directly behind the
place to be cut. Avoid areas where
electrical wiring or conduits are
located.
3. Place the unit on a solid and level
foundation.
4. Tubing, wiring through and drain
pipe of low wall and floor
mounted units can be routed,
rear or right side of unit when
facing front.
Ceiling mounted can be routed
straight downward.
5.
Pull air filters upward (Figure 6).
Figure 5
6. Unscrew at the return grille
(Figure 7).
7. Unscrew at the grille bottom
hinges, pull out the screw, and
unscrew at the side panel front
(Figure 8). Then, push down on
the side
panel front and pull up
(Figure 9).
Note: = A 0.49" x 1.575" - 4 SLOT
(Mounting hole) (12.5 mm 40.0 mm)
Unit Size B
MCX 512-518
36.2" (920)
MCX 512GB5
MCX 524
46.1" (1,170)
MCX 518-524GB5
MCX 530-536
55.9" (1,420)
MCX 530GB5
MCX 042-048 65.7" (1,670)
MCX 536-042GB5
75.6" (1,920)
MCX 060
8. Place or hang the unit at the
selected position.
9. Replace both right and left side
panels, and the return grille after
the installation of wiring, tubing
and piping is complete.
Outdoor Unit
See the proper installation method
provided in the Installation Manual
for the outdoor unit.
Indoor side
Figure 6
Pull
Pull
Figure 7
Figure 8
Figure 9
Outdoor side
Figure 10
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Connection of Refrigerant Tubing
The indoor unit refrigerant line
connections are flared both 50 Hz
and 60 Hz. Installation brazing, leak
testing, and evacuation of refrigerant
lines are covered in the Installer
Manual, packaged with the outdoor
unit. Read the instructions before
installing the refrigerant lines.
The indoor unit refrigerant piping
connections are located on the right
hand side when facing the unit
(Figure 11).
Connecting the unit with flaring
procedure.
(Only for MCX 512-536)
1. Flaring (If piping is procured or
cut at the site). Cut the copper
tube to the required length with
a tube cutter. It is recommended
to cut approx. 30-50 cm. longer
than the tubing length you
estimate.
2. Hold each pipe downward when
cutting and remove burrs at the
end of the copper tube with a
tube reamer or file. This process
is important and should be done
carefully to make a good flare
(Figure 12 and Figure 13).
Figure 11
Check if (L) is flared uniform
and is not cracked or scratched.
L Dimension:
1.4 to 1.7 mm (6.35 mm dia)
1.8 to 2.0 mm (9.53 mm dia)
1.9 to 2.2 mm (12.7 mm dia)
2.1 to 2.4 mm (15.88 mm dia)
When reaming, hold the tube end
downward and be sure that no
copper scraps fall into the tube.
3. Remove the flare nut from the
unit and be sure to mount it on
the copper tube.
4. Make a flare at the end of copper
tube with a flare tool (Figure
14, 15).
Copper
tubing
Reamer
Figure 12
Before After
Deburring
Figure 13
Flare tool
Flare nut
Copper
tubing
Figure 14
L
Figure 15
A good flare should have the
following characteristics:
- Inside surface is glossy and
smooth.
- Edge is smooth.
- Tapered sides are of uniform
length.
Bending
5. When bending the tube, be
careful not to crush it. To prevent
crushing of the tube, bend it
gently and do not bend the tube
at a radius curvature of less than
100 mm.
6. If the copper tube is bent or
pulled too often, it will become
stiff. Do not bend the pipe more
than three times at one place.
Cautions before
connecting tubes tightly
7. Be sure to apply a sealing cap or
water-proof tape to prevent dust
or water from getting into the
tubes before they are used.
8. Be sure to apply refrigerant
lubricant to the matching
surfaces of the flare and union
before connecting them
together. This is effective for
reducing gas leaks (Figure 16).
Apply refrigerant
lubricant here
Figure 16
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Connection
9. For proper connection, align the
union tube and flare tube straight
with each other, then screw in the
flare nut lightly at first to obtain a
smooth match (Figure 17).
10.
Tighten the flare nut to the
specified tightening torque with
torque wrench and adjustable
wrench (Figure 18).
Flare Nut Tightening Torque
Flare Nut/Piping Size Tightening Torque
kgf, - cm lbf-in
6.35 mm (1/4") dia. 150~200 130~170
9.53 mm (3/8") dia. 350~400 300~340
12.7 mm (1/2") dia. 500~550 430~470
15.88 mm (5/8") dia. 600~650 520~570
11. Repeat the process above for the
remaining line.
Connecting the unit with
brazing procedure
(Only for MCX 042-060)
1. Cut the copper tube to the
required length with a tube cutter.
It is recommended to cut approx.
20-30 cm. longer than the tube
length you estimate.
2. Remove burrs at the end of the
copper tube with a tube reamer
(Figure 12).
3. There are 2 ways to connect the
copper tube
- Use a coupling between the
copper tube of indoor unit and
the copper tube used for
installation (Figure 19).
- Expand the copper tube by
using a swaging tool set as in
Figure 20.
4.
Clean internal and external surfaces
of coupling or expanded tube prior
to brazing.
Figure 17
Figure 18
Figure 20
Figure 19
5. Insulate the entire gas line.
6. Do not allow uninsulated liquid
line to come in direct contact
with bare gas line.
7. Precautions should be taken to
avoid heat damage to the
pressure tap valve core during
brazing. It is recommended that
a wet rag be wrapped around the
valve body.
8. It is recommended to use braze
shield, soak pad in water and
place over suction and liquid
lines to protect unit finish.
9. To braze the copper tube, before
brazing a copper tube to a solder
coupling or a copper tube to an
expanded tube, do not forget to
keep them tight as shown in
Figure 21, 22.
10. Use a dry nitrogen purge and
brazing alloy without flux when
brazing the field line to the
copper factory connection. Flow
dry nitrogen into either valve
pressure tap port, through the
tubing and out the other port
while brazing.
11.Braze using accepted good
brazing techniques.
Copper tube of
outdoor unit
Solder coupling
Swaging
tool
Copper
tube
Tube holder
(Clamp)
Union Flare nut
Solder
coupling
C
O
M
M
E
T
3
Figure 21
To rc h
Copper tube
from indoor
unit
Solder rod
Copper tube from
outdoor unit
Solder
coupling
C
O
M
M
E
T
3
Figure 22
To rc h
Copper tube
from indoor
unit
Solder rod
Copper tube from
outdoor unit
Copper tube
of indoor unit
Indoor unit
pipe
Wrench
(adjustable)
Torque
wrench
Flare nut
Connection pipe
Connection of Refrigerant Tubing
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