Trane MWD507 User manual

Indoor Unit
Installation & Operation Manual
Advanced Multi-split System
Concealed Indoor Unit
MW(C)D507-524
R410A
200061230200
April. 2012 AMS-SVX04A-EN

Overview
All installation process of this air conditioner must comply with the national, provincial and local
regulations.
Before installing this air conditioner, please be careful to review the information within this manual.
This unit must be installed and serviced in the light of this manual so as to ensure the normal
and reliable operation of the air conditioner. The installation of this unit must be executed by the
specialized staff designated by our company.
This manual may not cover any circumstance encountered during the installation of this air
conditioning unit, so it is impossible that this manual gives directions for all possibilities occurred in
the course of installation. For more detailed information or special problem proposed by customers
but not detailed in this manual, please contact TRANE.
2 AMS-SVX04A-EN

Table of contents
Overview ččččččččččččččččččččččččččččččč2
Safety instruction ččččččččččččččččččččččččččč 4
Model descriptions ččččččččččččččččččččččččččč 6
Unit dimension čččččččččččččččččččččččččččč 7
Standard model čččččččččččččččččččččččččččč7
Slim model čččččččččččččččččččččččččččččč8
Unit installation čččččččččččččččččččččččččččč 9
Precautions čččččččččččččččččččččččččččččč9
Installation of the concealed indoor unit ččččččččččččččččč9
Installation of refrigerant pipe čččččččččččččččččččččč 14
Three principles of installing the refrigerant pipe ččččččččččččč 14
Flared coupling of the refrigerant pipe ččččččččččččččččč 14
Welding of refrigerant pipe čččččččččččččččččččččč 15
Purging of refrigerant pipe čččččččččččččččččččččč 15
Leakage detection and heat insulation of refrigerant pipe ččččččččč 16
Precautions ččččččččččččččččččččččččččččč 17
Connection of drainage pipe ččččččččččččččččččččč 17
Concentrated drainage čččččččččččččččččččččččč 18
Drainage testing ččččččččččččččččččččččččččč 18
Electrical control wiring ččččččččččččččččččččččččč 19
Concealed type indoor unit čččččččččččččččččččččč 19
Precautions: čččččččččččččččččččččččččččč 19
Wired controller ččččččččččččččččččččččččččč 19
DIP setting of the controller čččččččččččččččččččččč 20
DIP for model of the indoor unit čččččččččččččččččččč 20
DIP for address of the indoor unit ččččččččččččččččččč 21
Shift selection for fan speed of the indoor unit čččččččččččččč 21
Electrical parametersččččččččččččččččččččččččč 22
Description of controllerččččččččččččččččččččččččč 23
Operating panel of wired controller čččččččččččččččččč 23
System parameter query list ččččččččččččččččččččč 25
Attached list: parameter queryččččččččččččččččččččč 25
Electrical wiring diagram čččččččččččččččččččččččč 26
AMS-SVX04A-EN 3

Safety instruction
Caution
Please read this installation manual carefully and be sure to comply with the instructions in
this manual before installing and using this unit!
For this product, the following standards apply:
GB/T 18837-2002 JB 8655-1997 GB 4706.1-2005
Preparation before installation
Please have a qualified licensed professional technician handle the installation of this unit. Users•
may not install, repair or displace the air conditioner by themselves;
Please have a licensed professional electrician handle the power wiring, and inspect safety in•
utilizing electricity, such as sufficiency of line capacity, damage of power line, etc.;
Please be sure to install the air conditioning unit according to this manual. In the case of any•
improper installation, water leakage, electric shock or fire may be caused.
Precautions during installation
Location where the air conditioner should not be installed:•
Avoid where inflammable gas or volatile combustible matter is likely to leak (e.g., gasoline,
Ř
combustible dust, etc.), or fire may be caused.
Avoid where acid, alkaline matter or corrosive gas might be generated, or susceptibility to
Ř
corrosion of the unit may be caused, and lead to leakage of refrigerants;
Avoid where dust, steam, oil fume or special spraying agent diffuses, e.g. kitchen, etc.
Ř
A special circuit should be provided, and it must accord withĐEngineering specification for•
electrical equipmentsđandĐSpecification for indoor electrical wiringđ.
The unit must be earthed properly. Be sure to connect the earth wire to the ground reliably. Do•
not connect the earth wire to water or gas pipes, or telephone wire.
Please use the power line having sufficient current capacity and rated power, and the line may•
not be tightened excessively.
Fix the power line firmly so that external force may not be applied to the terminal block.•
If connection or fixing is unsecured, the generated heat will lead to electric shock or fire.•
The electrical parts of the unit shall be damp-proofed, apart from water source. Do not install the•
wired controller where easy to contact the inflammable gas, sulphurous gas, machine oil, etc.
The drainage pipe must be installed according to those specified in this manual to ensure smooth•
draining. Heat insulation should be done to prevent generating condensate water.
If being installed in a relatively small room, relevant measures must be taken to prevent•
concentration of refrigerants in the room exceeding limit value in case of leakage.
During installation, if secondary refrigerants leak, ventilation is required. The leaked refrigerants•
will generate poisonous gas in case of being fired.
After completion of installation, tightness test shall be performed for the pipes. Inspect where air•
leakage exists.
Be sure to use the R410A specialized tools and accessories for the air conditioning unit that•
R410A refrigerants are used.
4 AMS-SVX04A-EN

Safety instruction
Precautions during trial operation
Do not operate the wired controller or remote controller with wet hands. Do not splash water•
into the wired controller or remote controller.
Do not pull or bend the cable of the wired controller. Never use sharp object press the button,•
and avoid improper connection.
During operation of the unit, never extend the finger, stick or rod into the air inlet or outlet.•
In the process of operation or at the just end of operation, never touch the refrigerant piping•
with hands because the terribly hot or cold piping may easily lead to scalding or freezing injury of
hands.
After stopping operation, do not switch off the power immediately, but wait for 5 min at least and•
then turn it off; or else, water leakage might be caused.
AMS-SVX04A-EN 5

Model descriptions
Model M C D 5 1 8 M M N B A
1234567891011
Service code M C D 5 1 8 M M N B A N L A B
123456789101112131415
Digit 1 M = Mini split unit
Digit 2 C = Cooling only
W = Heat pump
Digit 3 D = Concealed unit
Digit 4 5 = Threaded connection
Digits 5, 6 Nominal cooling capacity
07 09 10 11 12 16 18 24
Digit 7 Design Sequence
M = Standard ducted type (only model 09, 12, 18, 24)
N = Slim ducted type (except model 24)
Digit 8 Power supply type
M = 220~240V/50Hz/1PH
Digit 9 Electric heater
N = Without electric heater(cooling only model can only choose this option)
C = With 1.0 kW electric heater (only for MWD507, 509, 510)
D = With 1.4 kW electric heater (only for MWD511, 512)
F = With 1.8 kW electric heater (only for MWD516, 518)
H = With 2.8 kW electric heater (only for MWD524)
Digit 10 Controller
A = Wired controller
B = Wired + card remote controller (standard)
Digit 11 Design change
A = standard
B = Option With drainage pump
Digit 12 Optional accessories
N = Without air return plenum, without strainer, without hot water coil
M = With rear air return plenum, without strainer, without hot water coil
A = With rear air return plenum, with strainer, without hot water coil
B = With rear air return plenum, with strainer, with single-row hot water coil
D = Without rear air return plenum, without strainer, with single-row hot water coil
F = With rear air return plenum, without strainer, with single-row hot water coil
G = With rear air return plenum, with strainer, with double-row hot water coil
J = Without air return plenum, without strainer, with double-row hot water coil
S = With rear air return plenum, without strainer, with double-row hot water coil
K = With bottom air return plenum, without strainer, without hot water coil
L = With bottom air return plenum, with strainer, without hot water coil
P = With bottom air return plenum, with strainer, with single-row hot water coil
T = With bottom air return plenum, with strainer, with double-row hot water coil
Q = With bottom air return plenum, without strainer, with single-row hot water coil
Y = With bottom air return plenum, without strainer, with double-row hot water coil
(Standard strainer is made of nylon)
Digit 13 Coil connection (to air outlet)
L = Left (standard)
R = Right
Digit 14 For future
A
Digit 15 Language option
A = Chinese
B = English
6 AMS-SVX04A-EN

Unit dimension
Standard model
Motor
6
A
B
C
883
1153
983
C
1. Only main unit, no accessories selected by the customer: MW(C)D509~524MM***
1433
518
270
487
192
226
237
MW(C)D524MM
14
Detail A
1243 1270
MW(C)D509MM
MW(C)D512MM
MW(C)D518MM
Dimensions
(unit: mm)
Model A
963
793
693
B
720
820
990
152
223
10
14
Air outlet
31
Electrical control box
Drain pipe
outlet joint
(3/4" external thread)
23
3/8" 5/8"
29
Draian pan
Unit weight
18.5
20
23
(Kg)
3/8"
Inlet
pipe Ø
Outlet
pipe Ø
Dimensions
(unit: mm)
Model
Inlet
pipe Ø
Outlet
pipe Ø
1/4"
1/4"
3/8"
1/2"
5/8"
Hoisting hole (4), see detail A
Heat exchanger
Drain pan Heat exchanger Electric heater
(optional)
12
43
211
Centrifugal fan
121
H
Remove hot water coil
A
B
6
C
D
2. Main unit + rear air return plenum + bottom air return plenum + hot water coil + electric heater: MW(C)D509~524MM***
Water outlet pipe joint:
ZG1/2" for single-row, ZG3/4" for double-row
Bottom return air = 543
Rear return air = 522
270
198
Bottom return air
(optional)
Rear return air
(optional)
14
Bottom return air = 248
Rear return air = 226
198
Rear return air = 243
Bottom return air = 248
143312701243
Detail A
720
990
820
963
793
693
A
883
1153
983
BC
14
Hot
water coil
29
76
156
186
Hot water coil
(optional)
11
98
25
3
61
Drainage pipe
Water inlet pipe joint
ZG1/2" for single-row
ZG3/4" for double-row
223
710x198
Hx198
980x198
810x198
Electrical control box
Drain pipe outlet
joint (3/4" external thread)
1260x198
5/8"
3/8"
1332
1/4"
3/8"
1/4"
1052
882
782
D
5/8"
1/2"
3/8"
Hoisting hole (6), see detail A
211 18812
Air return plenum
MW(C)D524MM
MW(C)D509MM
MW(C)D512MM
MW(C)D518MM
Ø11
Ø18
Ø11
Ø18
Size of return
air opening
AMS-SVX04A-EN 7

Unit Dimension
126 10
270 14
200
197
Hoisting hole (4), see detail A Centrifugal fan
Motor
Drain pipe outlet
joint (3/4" external thread)
Electrical control box
14
Ø11
Detail
Drain pipe outlet
joint (3/4" external thread)
Detail
A
Ø18
Ø11
Ø18
Outlet pipe
Inlet pipe
A
29
C
MW(C)D516/518
MW(C)D511/512
MW(C)D507/509/510
C
983
1153
883
BA
990
820
720
793
963
693
21
18
17
1/4"
3/8"
1/4"
5/8"
1/2"
3/8"
43
B
12 211
6
Joint fixing plate Drain pan Heat exchanger
Joint fixing plate Drain pan
Heat exchanger
Air strainer
183.5
409 295
487
510
113
23
1. Only main unit, no accessories selected by the customer: MW(C)D507~518NM***
6
B
C
A
183.5
200 10
126
270 14
Outlet pipe
Inlet pipe
14
A
29
Electric heater
12 211
43
207
Electrical
control box
Air return
plenum
Rear return air
(optional) Bottom return air
(optional)
167
167
H
23
113
295
522
2. Main unit + accessories selected by the customer: MW(C)D507~518NM***
D
782
882
1052
693
793
963
CBA
820
990
720
983
1153
883
810x167
980x167
Size of return
air opening
Hx167
710x167
3/8"
1/4"
1/4"
1/2"
5/8"
3/8"
MW(C)D516/518
MW(C)D511/512
MW(C)D507/509/510
Dimensions
(unit: mm)
Model
Unit weight
(Kg)
Inlet
pipe Ø
Outlet
pipe Ø
Dimensions
(unit: mm)
Model
Inlet
pipe Ø
Outlet
pipe Ø
Slim model
8 AMS-SVX04A-EN

Unit installation
Precautions
Be sure to take out the indoor unit from the packing case. When handling the air conditioner,•
please hold the stress area of the air conditioner, such as lifting lug etc., not the steam pipe,
liquid pipe or drainage pipe;
Select the place where a relatively short duct is used, the quantity of connecting work is minor•
and it is convenient to wire and couple the pipe, and connect with indoor unit;
Make sure that the bearing strength of the installation site is enough to undertake the weight of•
the indoor unit; or else, unit damage or personal injury may be caused;
Make sure that the strength of the hoisting screw is sufficient to withstand the weight of the•
unit, and at least 4 ones should be used;
Ensure good ventilation so that the air flow can be blown throughout the room;•
Obstruct should be put away from the air inlet or outlet so that the air may be circulated freely;•
Make sure that there are enough space for service and maintenance. The access door is located•
at the side of the electrical control box so as to be convenient for service and maintenance;
Install the indoor unit at a place where is apart from the lighting facilities using ballasts. When•
operating the wireless remote controller, the ballast can lead to receiving failure;
Keep the indoor unit far from direct sunlight.•
Installation of the concealed indoor unit
Hang the unit up on a firm and horizontal support such as the ceiling. In case that the hoisting1.
surface is not firm, noise, vibration or leakage will be caused. See the following figure.
Wall
Outside
Inclined
Drainage pipe
AMS-SVX04A-EN 9

Unit Installation
Installation of the indoor unit with ducts refers to the following figure.2.
Mounting roof
Supply air
Wide expansion bolt
Wide lock washer
Hanging screw
Nut
B
BA
A
B rivet
Supply air channel Supply air channel
Supply air channel
Air outlet grille
Unit roof plate
Roof plate with screws
A enlarged
Unit
Return air
Ceiling
A
10 AMS-SVX04A-EN

Unit Installation
Support the unit firmly.3.
Remove the junction box lid to connect the wire with the terminals.4.
Make sure that there are enough space for maintenance, as shown in the figure (A ġB =
Ř
Unit length ġWidth);
Select a place for hanging. Mount the suspension rod, and fix it firmly;
Ř
Check whether the suspension rod is aligned with the unit, and lift the unit on the
Ř
suspension rod;
Set the drainage slope according to the right figure. Make sure that there is a gradient in the
Ř
direction of drainage of the indoor unit. Then, screw down the nuts on the suspension rod.
≥1500
≥1500
≥1500
≥1500
Concealed type
indoor unit
Surrounding space of the unit
≥50
≥50
A ×B at least
Suspension rod
Ceiling
Service and maintenance space
AMS-SVX04A-EN 11

Preparation and installation of air duct
Precautions
When designing the air duct, please design the air channel according to the external static•
pressure of the unit. The resistance of the air channel is equal to the static pressure; otherwise,
the air volume may be too large or small, resulting in failure of unit operation;
Make sure that the distance between the indoor return air opening and air inlet of the heat•
exchanger is greater than or equal to 1 m;
Rational design of the air duct may eliminate noise effectively;•
Make the external static pressure balanced with the duct resistance by changing the rotating•
speed of the fan or regulating the resistance of the air duct (e.g., by adjusting the air-out speed of
the diffuser);
An insulating layer should be provided to reduce energy loss during transmission and separation•
of condensate water;
The return air duct and air outlet duct should be fixed to the precast slab of the floor with iron•
stands, and all joints of the air duct should be sealed with sealant;
The distance between the wall and return air duct or air outlet duct is greater than or equal to•
150 mm.
Installation of the return air duct
When bottom return air is selected, fold a piece of canvas duct purchased or self-made, use it•
as the transition joint between the return air opening and return air grille, make free regulation
depending on the height of the indoor ceiling, and prevent vibration of the ceiling during
operation of the unit.
When bottom return air is selected, prepare the return air duct, connect its one end to the return•
air opening of the indoor unit with rivets, and another end to the return air grille, as shown in
following figures
Rear return air: Rear return air:
Return air duct
Air return plenum Air return plenum
Return air grille Canvas duct Connected
by rivets
Canvas duc
Return air grille
Connected
by rivets
Unit Installation
12 AMS-SVX04A-EN

Installation of air outlet duct
The air outlet duct may be rectangle or round: rectangle duct may be connected directly to the•
air outlet of the indoor unit with rivets; round duct should be connected to the air outlet of the
indoor unit after adding a transition duct, and another end may be separate or be connected to
the air outlet grille, as shown in following figure:
Fan speed of each grille shall be uniform basically so as to meet the air conditioning requirement•
of the room.
Return air duct
Canvas duct
Return air grille
Air outlet duct
Strainer
Air outlet grille
Suspension rod Indoor unit Transition duct
Unit Installation
AMS-SVX04A-EN 13

Installation of refrigerant pipe
Three principles of installing the refrigerant pipe
āCause Measures against failure
Drying Rainwater, water for engineering invaded
from outside Processing ŚPurging ŚVacuum drying
Invasion of condensate water in the pipe
Cleaning Oxide formed in the pipe during welding Replace nitrogen gas
Dust, impurities invaded from outside Purging
Tightness
Incomplete welding Use appropriate material Ś(copper tube, welding rod)
Air leakage from horn tube Strictly comply with basic operation of the horn tube
Air leakage from side Strictly comply with basic operation of welding
Strictly comply with basic operation of pipe connection
Flared coupling of the refrigerant pipe
Cutting of the pipe should be carried out by using a pipe cutter. If the pipe size is too large, a•
metal cut saw may be used, but prevent saw dust entering into the pipe;
Only the flare nut attached to the unit may be used. Before flaring, first mount the nut on the•
copper tube;
Check whether there are damages on the flared surface. After the mouth of the copper tube is•
flared, keep concentric. Burr, cracks, folding, etc. are not allowed;
When coupling the flare opening, apply ester oil or ether oil to inner and outer surfaces of the•
opening, and first screw the nut by 3 ~ 4 turns;
Tighten the flare nut by a proper torque, but do not damage the nut because of excessive torque.•
Hold the pipe with two spanners.
R 0.4~0.8
90°±2°
45°±2°
A
Torque wrench Spanner
Piping joint
Flare nut
Size
(mm) Tightening torque Size of flared pipe A
(mm)
Ø6.35 14.2~17.2 N•m
(144~176 Kgf•cm) 8.7~9.1
Ø9.52 32.7~39.9 N•m
(333~407 Kgf•cm) 12.8~13.2
Ø12.70 49.5~60.3 N•m
(504~616 Kgf•cm) 16.2~16.6
Ø15.88 61.8~75.4 N•m
(630~770 Kgf•cm) 19.3~19.7
Ø19.05 92.7~118.6 N•m
(990~1210 Kgf•cm) 23.1~23.7
14 AMS-SVX04A-EN

Installation of refrigerant pipe
Welding of refrigerant pipe
Make downward or flat lateral welding, and avoid overhead welding as possible;•
For liquid or gas pipes, be sure to care the assembling direction and angle, and avoid refrigerant•
short circuit or oil accumulation;
While welding, the allowed method to replacing nitrogen:•
Nitrogen protection soldering must be used. During the welding, it is necessary to fill
Ř
0.2 ~ 0.5 kgf/cm2nitrogen in the fitting pipe to prevent system blockage due to the oxide
generated in welding;
After finishing the welding, cool naturally or by purging nitrogen, but cold water spraying is
Ř
not allowed to avoid crack generation of the crater because of shock chilling.
Try to reduce the number of bends. When bending the pipe, the bending radius should be as•
large as possible;
Standard space for supports of the pipe is as follows:•
Nitrogen
Manual valve
Plug
Welding zone
Pressure regulato
Nitrogen cylinder
Pressure hose
Pipe size 20 mm below 20 ~ 45 mm 45 mm above
Max. interval (m) 1.0 1.5 2.0
Purging of refrigerant pipe
During erecting and constructing the fitting pipe, it is hard to avoid dust, water vapor entering the
pipe. Therefore, after completion of fitting pipe construction, it is necessary to purge the pipe with
nitrogen.
AB
Liquid pipe
Gas pipe
Pressure regulator valve Outdoor unit
Indoor unit
Interface not connected temporarily.
Cover the interface of the indoor unit with adhesive tape
The gas used for purging must be nitrogen. The nitrogen cylinder should be equipped with a•
pressure regulator valve.
Connect the pressure regulator valve to the inlet of the outdoor unit at the side of liquid pipe with•
a gas pipe.
Block well all interfaces of the copper tube at the liquid side with blind plugs except those for the•
indoor unit A.
Switch on the nitrogen cylinder, and adjust the valve to 5 Kgf/cm2.•
Check whether the nitrogen passes through the liquid pipe to indoor unit A. (The interface at the•
side of the indoor unit should be covered with adhesive tape to prevent dirt entering.)
AMS-SVX04A-EN 15

Installation of refrigerant pipe
Purging:•
Sustain the liquid pipe of the indoor unit with the insulating material in the hand.a.
When it is incapable to resist due to change of pressure, remove the insulating materialb.
quickly, and make the nitrogen blow off fast from the pipe mouth (first purging).
Then resist the pipe mouth with the insulating material (second purging).c.
Place a piece of clean cloth in front of the mouth, the nitrogen is ejected onto the cloth, andd.
dirt contained in the high-speed nitrogen is found. If the cloth becomes wet, it indicates that
water exists in the pipe. Repeat purging till no dirt is blown off and the cloth does not be
wet.
For indoor unit B, repeat the above mentioned operation.•
After finishing working on the liquid pipe, carry out the aforesaid purging for the gas pipes.•
Leakage detection and heat insulation of refrigerant pipe
After construction of the fitting pipe finishes, a tightness test should be applied to the whole•
refrigerating system (indoor unit and pipe). Fill the nitrogen to a specific pressure (R410A model
– 38 Kgf/cm2) simultaneously from both sides of the gas and liquid pipes, view whether there is
change of pressure, check whether each interface (welding or flared) and the whole system have
good tightness, and see if there have leakage sources.
Caution: when the air temperature at the time of pressurization is different from that at the time•
of observation, correction should be carried out according to the following equation:
Actual value = Pressure at the time of pressurization + (Temperature at the time of pressurization•
– Temperature at the time of observation)ġ0.1 Kgf/cm2
If no gas leakage is detected, insulate the fitting pipe with heat insulating material. The gas pipe•
and liquid pipe need insulating respectively.
Surface
wrapping tap
Control
cable
No heat
insulation
for the joint
Heat
insulation
● The gas pipe and
liquid pipe should
not be insulated
together
● Coupling portion
of the fitting pipe
should be
insulated
completely
● Only the gas pipe
is insulated
(cooling only)
● Both the gas pipe
and liquid pipe are
insulated
● Insulated support
Incorrect
Liquid pipe Gas pipe
Liquid pipe
Control
cable
Surface
wrapping
tap
Gas pipe
Heat
insulation
Copper tube
Arc gasket
Metal
support
Heat
insulation
Heat
insulation
Heat insulation
Surface
wrapping tap
Gas
pipe
Liquid
pipe
Correct
Control
cable
For more requirements of lines, please refer to the Installation, Operation and Maintenance Manual of
outdoor unit.
16 AMS-SVX04A-EN

Precautions
Before connecting the drainage pipe, first dismount the drain plug on the left or right side of the•
bottom plate;
The condensate pipe should be as short as possible drains in run-off elevation (under way), avoid•
the drainage pipe up and down, and prevent counter flow of the condensate water;
A 1/100 or more gradient should be provided for installation of the horizontal drainage pipe.•
Moreover, the hose should be fixed with suspension rods, and the distance between them is 1.0
to 1.5 m.
Distance between the suspension rods of the horizontal drainage pipe:
Material Nominal diameter Distance
Hard PVC pipe 25 ~ 40 mm Less than 1.5 m
Connection of drainage pipe
Without drainage pump:
Never install the drainage pipe upwards, or water may flow back to the machine.•
Drainage
pipe joint
1~1.5m
Horizontal drainage pipe
(1/100 or more gradient)
Hoisting screw
Ceiling
Drainage pipe joint
With drainage pump:
The draining height outside the unit may not exceed 500 mm, or else water leakage may be•
caused;
First raise the drainage pipe by 300 ~ 500 mm, then down to 20 mm at least.•
11.5m
Suspension rod
Horizontal drainage pipe
(1/100 or more gradient)
≥20mm
≤500mm
Ceiling
Indoor unit
Installation of refrigerant pipe
AMS-SVX04A-EN 17

Installation of refrigerant pipe
Concentrated drainage
Please select the drainage pipe with a diameter adapting to the running capacity of the unit.
Without drainage pump:
≥100
Indoor unit Indoor unit Indoor unit
Ceiling
Concentrated drainage pipe,
gradient ≥ 1/100
(Slim line) Duct type
With drainage pump:
When 3 or more indoor units are installed, a main air vent is provided for the indoor unit having a
farthest distance from the main drainage pipe.
Suspension
Main air vent
Concentrated drainage pipe,
gradient ≥ 1/100
1
~
1.5m
Indoor unit
Indoor unitIndoor unit
Ceiling
≤500
Main drainage
Drainage testing
Check the smoothness of drain after installation. Check the drain state by filling about 2 L water•
into the drain pan of the indoor unit as shown in the following figure;
Set up the model of the drainage pump, run the unit in cooling mode, and check pumping;•
Check the drain at the end of the drainage pipe. Make sure that the condensate water drains•
smoothly, and no water leakage exists.
After completion of testing, insulate the condensate pipe.•
Drainage
pipe
18 AMS-SVX04A-EN

Electrical control wiring
Concealed type indoor unit
Remove the electrical control box lid of the concealed type indoor unit, pull wires inside through1.
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 firm connection.
Pull communication lines from other indoor unit or outdoor unit inside through the incoming hole2.
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 inside3.
through the incoming hole at the side of the control box, and connect to CN3 terminal of the
controller.
After finishing 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 mm2. 2. If electric heater is provided for the unit, the
specification for power line should be improved accordingly;
It is suggested that conductors provided by Trane factory is used for the communication lines of3.
the indoor and outdoor units. The shield twisted pair is 0.5 ~ 1.25 mm2, twist pitch is less than 10
cm;
Control signal has A and B polarities. Connection of different polarities is prohibited (A and B may4.
not be connected);
While the power line is laid in parallel with the communication line, a certain distance must be5.
retained.
Wired controller
Supporting rack of the wired controller base plate is shown in following figure. When being1.
installed, the base plate must be flush with the wall surface.
AMS-SVX04A-EN 19

Plug the terminal of shielded communication line in corresponding place of the wired controller.2.
To wired controller
Cover the front cover plate of the wired controller.3.
DIP setting of the controller
DIP for model of indoor unit DIP for address of indoor unit Shift selection of indoor fan
S1 S2 S3 S4 S5 S6 S7 S8
DIP for model of the indoor unit
If model of the indoor unit differs, the DIP setting of the control panel is different. There are 8 DIP
switches on the control panel of the indoor unit, of which S1, S2, S3 and S4 are for model, and their
settings are as shown in following table:
Model of indoor unit S1 S2 S3 S4
MW(C)D507 0 0 0 0
MW(C)D509 0 0 1 0
MW(C)D510 0 0 1 1
MW(C)D511 0 1 0 0
MW(C)D512 0 1 0 1
MW(C)D516 1 0 0 1
MW(C)D518 1 0 1 1
MW(C)D524 1 1 1 0
Electrical control wiring
20 AMS-SVX04A-EN