iom-indoor inverter trane

8/16/2019 IOM-Indoor Inverter Trane

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Installation manual of indoor units

TVR Series Variable Refrigerant

System

MVRC028 ~ MVRC140

MVRD022 ~ MVRD140

MVRH100 ~ MVRH140

MVRX028 ~ MVRX140

MVRS022 ~ MVRS071

MVRF175 ~ MVRF600

VRF-SVN02A-EN

2000-6298-02


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Contents

Safety precautions………………………………………………… 1

Dimension of indoor units ……………………………………… 2

Dimension of MVRC ……………………………………………………………2

Preparing works before installation ……………………………………………1

Precautions for installation …………… …… ……………………………………1

Precautions for test running ……………… ……………………………………1

Dimension of MVRD ……………………………………………………………2

Dimension of MVRH ……………………………………………………………3

Dimension of MVRX………………………………………………………………3

Dimension of MVRF………………………………………………………………

4Dimension of MVRS………………………………………………………………5

Indoor unit installation …………………………………………… 6

Installation of MVRC ……………………………………………………………6

8

9

Installation of MVRX ……………………………………………………………

Installation of MVRD/MVRS/MVRH ……………………………………………

Installation of MVRF…………………………………………………………… 12

Installation of EXV Box of indoor unit ……………………………………… 14

Refrigerant pipe installation …………………………………… 15

Three principles for installation ……………………………………………… 15

Connecting refrigerant pipe with flared joint………………………………… 15

Welding of refrigerant pipe …………………………………………………… 16

Blow wash on pipes …………………………………………………………… 17

Leakage test and thermal insulation on refrigerant pipe ………………… 17

Drainpipe installation …………………………………………… 19

Sustention of drainpipe ……………………………………………………… 19

Connection of drainpipe ……………………………………………………… 19

Centralized draining …………………………………………………………… 20

Draining test and thermal insulation of drainpipe ………………………… 21

Installation of power supply and communication cable …… 22

Specification for power supply cable ……………………………………… 22

Specification for communication cable …… ………………………………… 22

Installation of power supply cable ………… ………………………………… 23

Installation of communication cable ……… …… ……………… …………… 23

Installation of communication cable for wired controller … 24

Installation of communication cable ………………………………………… 24

Fasten…………………………………………………………………………… 24

Installation of communication cable for centralized controller … 25

Installation of communication cable ………………………………………… 25

Fasten…………………………………………………………………………… 25

Code setting of indoor units …………………………………… 26

Direction on failures ……………………………………………… 28


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Safety precautions

Caution： Carefully read this directory before installation and

using，it is important！

This production obeys standards below：

GB/T 18837-2002 JB 8655-1997 GB 4706.1-2005

This manual is for Trane Variable Refrigerant System Indoor unit. The

contents will change with the improvement of this equipment，we will not

remind you again then.

Preparing works before installation

Installation and maintenance must

be performed only by licensed

technicians. Users should not

install, repair or transport the

equipments.

All electric works should be done

by licensed electricians.

Improper installation will cause

water leakage, electric shock, fire

accident etc.

Make sure that the capacity of

wires meets requirement, and the

wires are not loosen or damaged.

When the location of installation is

a small room, a good ventilation

must be kept to avoid the thickness

of refrigerant to exceed limitation in

case of a leakage of the refrigerant.

Ensure that the location of

installation is strong enough.

Otherwise, equipment falling will

be caused.

Precautions for installationLocations which do not suit for

installation:

(1) Locations with a possibl e

leakage of combustible gas

or materials which easily

evaporate , such as gasoline.

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In these locations, an explosion

might be caused.

(2) Locations with acid, alkali and

caustic gas (eg.:SO2, H 2S). In

such environment, equipments

might be rusted and then

leakage will be caused.

(3) Locations with dust, vapor,

lampblack or special spray,

such as kitchen.

Make sure that all ground wires

have been linked to ground. Do not

link ground wires to lightning

rod, telephone lines, gas pipes

or water pipes.

Do not strain power supply cables

or communication cables too tight.

This system needs an independent

power supply.

Install cables securely and avoid

pressure on terminal board.Otherwise, a power leakage or fire

accident might be caused.

Electric parts should be placed

away from water and moisture. Do

not install wired controller or

centralized controller in locations

with combustible or corrosive gas.

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Follow this directory to install

drainpipe to insure a smooth

•

drainage. Pay attention to thermal

insulation to avoid condensation

water to appear.

Perform leakage test af ter

installation to find out any leaking

point.

Precautions for test running

Do not operate wired controller 、

wireless remote controller 、card

controller or centralized controller

with wet hands. Do not let water

get into them.

Do not strain or bend the cable of

wired controller or centralized

controller. Do not press buttons of

the controllers with sharp objects.

Do not put fingers or sticks into air

inlet or outlet when the system is

running.

Do not touch the refrigerant pipe

when the unit is running or stoppedminutes ago. I t wi l l cause

unnecessary hurt because the pipe

might be too hot or too cold.

Do not switch off the power

supply immediately after the

units s top running. Wait 5

minutes before shutting off the

power supply.Otherwise, water

leakage might happen.

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15525

20

4-Ø10.5×15

height250

240

depth 492

A(total length)

B(length of airway)

C(distance between hanging holes)

D(length of air return plenum)

175

drainpipe

Ø19.05

Dimension of indoor units

Dimension of MVRC

Dimension of MVRD

Model A

(mm)

B

(mm)

C

(mm)

D

(mm)

MVRD022/025/028/032/036 895 684 714 722

MVRD040/045/050/056 1110 894 924 932

MVRD063/071 1435 1187 1219 1227

MVRD080/090 1635 1284 1314 1322

MVRD100/112 1635 1393 1414 1422

MVRD125/140 1835 1563 1592 1600

950mm

9 5 0 m m

4-Ø7.5×15 A 880

720

790 B 880

signal receiver

width

840X840

H

dischargegrill

suction grille

drainpipe(Ø25)

A/B dimension of installation hole on roof

MVRC028/036/045/056/071/090Model MVRC100/112/125/140

H 240mm 285mm

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2 8 0

m m 6

7 3 m m

243mm

4-Ø12

Ø25

width W

distance between hanging holes K

drainpipe

Dimension of MVRH

Dimension of MVRX

ModelWidth W

(mm)

K

(mm)

M VRX028/036/056 905 800

M VRX071/090 1288 1185

M VRX112/125/140 1672 1568

length of return airway 936

length of airway 953

distance between hanging holes 1150

total length 1230

distance betweenhanging holes 570

h e i g h t 4 0 0

depth 750

2 5 2

3 1 9

40 58

4-12×40

Ø25drainpipe

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Dimension of MVRF

MVRF175, MVRF210, MVRF250, MVRF300

MVRF 400


4 0 0

3 1 2

40 58

depth 820

h e i g h t 5 0 0

total lenght 1340


lenght of airway 600

1215


Ø25drainpipe

4-12×40

total length 1690




h e i g h t 6 8 0

40

5 8 2

3 1 3

depth 84858

Ø25drainpipe

length of box 1514

gas pipe

liquid pipe


4-Ø15

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MVRF500，MVRF600

Dimension of MVRS

Model A

(mm)

B

(mm)

C

(mm)

D

(mm)

MVRS022/028/036 955 687 715 725

MVRS045/056 1380 1112 1140 1150

MVRS071 1660 1392 1420 1430

Ø25drainpipe

gas pipe

liquid pipe

40

5 8 2

3 1 3

depth 848

58

h e i g h t 6 8 2

total length 2043




length of box 1864distance betweenhanging holes 648

4-Ø15

height 192

Ø19drainpipe

depth 475

height of air return box 187

127

25 1 0

5

190

D (length of air return box )

B(length of airway)

C(distance between hanging holes)

A(total length)

4- 10×18262


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Indoor unit installation

Installation of MVRC

Schematic diagram for location of installation.

≥0.5m

≤ 3 .

5 m

≥ 1 .

0 m

impediment

floor

≤ 0 .

3 m

girder

indoor unit

girder

≥0.5m

Install in the limitation shown in the schematic diagram above. Or the

efficiency of air conditioning will be influenced.

Unit hanging

Measure the ceiling and mark the location. Perforate in the ceiling and set the

hanging stick.

Make sure that the distance between hanging sticks is 790 mm×720 mm.

Hang the indoor unit onto the hanging sticks with nut, flat mat and elastic mat.

Ensure that the unit is installed horizontally. Then screw down the nuts of the

hanging sticks to avoid falling or vibration.

flat mat

nut

elastic mat

nut

hanging stick

indoor unit

flat mat

Decoration panel installation

Make sure that the indoor unit body is in the very center of the hole in the ceiling.

Remove the suction grille from the decoration panel:

1) Push the suction grille lever inward and lift up the lever side .Shown as

picture below.

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There are some fundamental

requirements of installation below:

Make sure that the ventilation is

good enough, and air blew from

the indoor unit can reach all

corners of the room.

Make sure that there is no

impediment around the air inlet

and outlet to insure a good

ventilation.

Make sure that the drainpipes work

securely.

Make sure that the location of

installation is strong enough to

withstand the weight of the indoor

unit . Otherwise, damage and

injury will be caused.

Make sure that all hanging sticksin use are strong enough to

withstand the weight of the unit.

Choose a location which needs

shortest pipe and least work to

make piping connection more

convenient.

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the hooks on the sides of the indoor unit body. Shown as② in the picture below:

Not to let the louver motor lead wire get caught in the sealing material.

4) Screw all 4 hex head screws(located directly beneath the latches) ,panel

will rise. Shown as ③ in the picture below:

5) Adjust the decoration panel by turning it to the arrowed direction, shown as

④ in the picture below, so that the ceiling opening is completely covered.

6) Tighten the screws until the thickness of the sealing material between the

decoration panel and the indoor unit body reduces to 3/16-5/16 inches.

Shown as picture below:

Connect the wire of remote light and louver motor to the indoor controller.


•

2) Detach the suction grille from the

decoration panel by lifting the

grille up approximately 45°


Remove the service cover on the

corner. Slide the service cover

outward to remove. Shown as

picture below:

Install the decoration panel

1) Set the decoration panel to the

indoor unit body by matching the

position of the louver motor of the

decoration panel to the piping

position of the indoor unit ,as in

the right picture.

2) Install the decoration panel to

the indoor unit body by hanging

the latch on the opposite side of

the louver motor and the latch

near the louver motor to the

hook of indoor unit body.

Shown as ① in the r ight

picture:

3) Hang the remaining 2 latches to

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indoor

controller

REMOTE

A 1 B 1 A 2 B 2

M O T

O R

wire of theremote light

louver motor lead wire

Suction grille installation

Make sure that the filter is set in the suction grille correctly and is not flexible.

Make sure that it is convenient to open the Suction grille, and then set it into

the panel.

Installation of MVRX This type of indoor unit has two installation modes：install on the ceiling and

install on the floor .

When installing on the ceiling：

Make sure that, around the equipment, there is enough space for repairing,

as shown in the picture below:

≥500≥500

≥ 7 0

≥ 5 0 0

≥500

≤300

Fix the hanging sticks. Make sure that they are securely installed.

Remove the suction grille, frame and hung board.

Install hung board to the nuts of hanging sticks.

Hang the equipment to the hung board and screw down the nuts. After

installation of refrigerant pipe and drainpipe, put the removed suction grille

and frame back.

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hung board

nut

nut

flat mat

flat mat

hanging stickhung board

frame

Suction grille

When installing on the floor Remove suction grille, frame.

Connect the refrigerant pipes and drainpipe.

Put the suction grille and frame back.

Installation of MVRD/MVRS/MVRH

≥ 1 5 0

0

≥ 1 5 0 0

≥ 1 5 0

0

≥ 1 5 0 0

space around the epuipment

M V R

S

M V R H M V R

D

Installation of MVRD/MVRS

Make sure that, around the equipment, there is enough space for repairing.

As shown in the picture above.

Fix hanging sticks, and then hang the tache of the unit onto the hanging sticks.

Make sure that the hanging sticks are exactly connected to the unit, and the

tache of the unit are reliable.

Make a lean on the direction of draining. Then screw down the nuts of the

hanging sticks.

Installation of MVRH

Cautions

The unit should be installed in a place where the filter is easy to clean and

detachment；

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If the length of hanging stick is more than 3m, it is necessary to take

precautions against shake.

Make sure that, around the equipment, there is enough space for repairing.

Unit hanging

Choose a location for hang, fix the hanging sticks and make sure that they

are securely installed；

Make sure that the tache of the unit are reliable；

Hang the tache of the unit onto the hanging sticks between nut 1and 2

Use nut 2 to adjust the height of the unit;

Ensure that the unit is installed horizontally;

Screw down nut 1 and 3 of the hanging sticks to avoid falling or vibration.

Installation of air duct (for MVRD/MVRS/ MVRH)

Cautions

When designing air duct, make sure that the resistance of air duct equals to

static pressure outside the unit, otherwise the air volume would be too largeor too small;

Proper design of air duct can avoid noise efficiently;

Make the resistance of air duct equals to static pressure outside the

indoor unit by changing the speed of the unit’s fan or adjust the resistance

of air duct.

Set heat insulation layer around the duct in order to cut down energy waste

and to prevent vapor from condensing;

Air duct should be steadily sustained by the i ron hanging st icks. All joints

should be enveloped by airproof tape;

Keep the inlet of the unit′s heat exchanger and the air return window more

than 1m.

The distance between the edge of air duct and the wall should be no less

than 150mm.

Installation of air return duct (for MVRD/MVRS)

When use bottom return, buy or make a folded canvas air duct as a connection

of air return plenum and air return window. It can be adjusted to the height of

the ceiling. When the unit is running, canvas air duct can prevent the jar of the

ceiling.

When use rear return, air return duct should be made. Connect air

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nut1

nut2

nut3

flat mat

hanging stick

tacheunit

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return duct to canvas air duct with rivet and connect the other end to air return

plenum. As shown in the picture below .

rear return: bottom return:

rea air teturn plenum bottom air return plenumrivet

air

return

duct

rivetcanvas duct

air return window air return windowcanvas duct

Installation of air outlet duct (for MVRD/MVRS)

Air outlet duct usually has a section of rectangle or circle;

If the section is rectangle, the duct can be directly connected with the airway

of indoor unit with rivet;

If the section is circle, an additional transiting air duct should be set between

the air outlet duct and the airway of the indoor unit. The other side of the air

duct can be connected to air window directly. Shown as below:

hanging

stick

air return duct

canvas duct

air inlet window

air outlet duct

filter screen

air outlet window

transitingair duct

the indoor unit

Installation of air duct (for MVRH)

indoor unitstatic pressure boxair outlet duct air return duct

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Installtion of MVRF

Cautions

Please attach heat insulation material on the unit if the temperature inside the

ceiling higher than 30℃ and humidity higher than 80%.

An outdoor unit must match with only one MVRF unit, and the MVRF unit can

not share the outdoor unit with other kinds if indoor units.

Because of high noise, the installation should avoid noise and jar.

The unit need a special air outlet window, and this air outlet must keep away

from other units’air inlet to avoid the veracity of the temperature sensor.

Make sure that there is enough space for maintenance。

The unit should be installed in a place where the filter is easy to clean and

detachment.

≥2500

Make sure thataround theequipment, there isenough space for

repairing

≥300

check hole

600×600

air inlettache(×4)

MVRF

he servicespace

air outlet

≥800

≥500

≥500

the service space

floor

≥50

≥50

Hannging the unit

Choose a location for hanging, fix the hanging sticks and make sure that they

are securely installed;

Make sure that the tache is reliable;

Hang the tache of the unit onto the hanging sticks between nut 1and 2;

Use nut 2 to adjust the height of the unit;

Ensure that the unit is installed horizontally;

Screw down nut 1 and 3 of the hanging sticks to avoid falling or vibration.

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nut1

nut2

nut3

flat mat

hanging stick

tachenut1/2/3 hole for

installhanging stick

flat mat

unit

unit

MVRF175～MVRF300 MVRF400～MVRF600

Cautions: keep the drainpipe and air inlet in a lower place，otherwise there

might be a leakage of water. Shown as below.

≤1 °

≤1°

drainpipedrainpipe

air inlet air inlet

Installation of the duct (for MVRF)

Connect the air duct and the inlet/outlet flange of the unit with screw;

Airproof the flange of inlet and outlet with aluminum adhesive tape to avoid

air leakage.

wall

lid

insulation board flange of inlet

air inlet MVRF

canvas duct

flange of outlet

air outlet

a i r d uc t ( d o w n

wa r d )

Cautions:

(1) Make the air inlet duct lean down to avoid seeper.

(2) Ensure that the air inlet can breathe in fresh air, otherwise the unit may

malfunction.

(3) Set heat insulation layer around the air duct in order to cut down energywaste and to prevent vapor from condensing( thickness≥25mm).

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Installation of EXV Box of indoor unit

Cautions:

Follow the instruction on indoor unit—“EXV Box Application identification”.

EXV Box must be placed vertically;

After EXV Box placed correctly, connect its inlet to the l iquid pipe from the

outdoor unit and its outlet to the liquid pipe of the indoor unit.

It is suggested that the length of the pipe between EXV Box and the indoor

unit should be no more than 10m. 20m is the limitation.

Set heat insulation layer around EXV Box to prevent vapor from condensing.

Communication cable of the EXV Box should be connected to the indoor

controller.

Dimension of EXV Box:

outlet of EXV Box,

connected to indoor unit

communication cable，connected to

the indoor controller

inlet of EXV Box，

connected to liquid pipe from outdoor unit

distance between the 2 taches 245

width 75

height 165

Schematic picture for installation of EXV Box:

SLM

1 2 3 4 5 6 7 8

ON DIP

1 2 3 4 5 6 7 8

ON DIP

1 2 3 4 5 6

ON DIP

RESET

S1 S2 S3

A 1 B 1 A 2 B 2

E X V

EXV Box

communication cable of the

EXV Box(connected to the

indoor controller)

to gas

pipe of

outdoor

unit

o liquid

pipe of

outdoor

unit

indoor

controller

Note：MVRF175~MVRF600 do not have an EXV Box.

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Refrigerant pipe installation

Three principles of installation:

Reason Countermeasure

Dry

Rain water, etc. get into

the pipe

•

Blow with N →vacuum dryingCondensing water get into

the pipe

•

Clean

Oxide formed when welding• Replace O with N when welding

2

2

2

2

Dust from outside get into

the pipe• Blow with N

Airproof

Not completely welded• Use proper welding rod and copper pipe

Follow basic operation rules of flared

joint.

Air leakage at joint of 2

pipes

• Exactly follow basic operation rules of

welding.

Exactly follow basic rules of pipe

connecting

Connecting refrigerant pipe with flared joint

Use pipe cutter to cut pipes. If the diameter of the pipe is too large, metal saw

can be used. Make sure that the sawdust will not get into the pipe;

Install the nut onto pipe before flaring;

Ensure that the flared pipe is concentric. Make sure that there is no damage

on the surface of flared end. Do not make any flaws such as burr, crack,

drape, etc.

Lubricate the surface of flared joint with grease in order to let nut go smoothly

through. It can avoid a pipe distortion；

Screw down nuts with proper torsion. Do not break nuts because of screwing

too hard；Use two wrenches to hold the pipe; Shown as below:

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R 0.4~0.8

9 0 ° ± 2 °

4 5 ° ± 2 °

A

torsion wrench normal wrench

pipe joint in the indoor unit

nut of flared joint

Dimension

(mm)Dorsion

Dimension of

flared end A

(mm)

Ø6.3514.2~17.2 N •m

(144~176 Kgf• cm)8.7~9.1

Ø9.5232.7~39.9 N •m

(333~407 Kgf• cm)12.8~13.2

Ø12.7049.5~60.3 N •m

(504~616 Kgf• cm)16.2~16.6

Ø15.8861.8~75.4 N •m

(630~770 Kgf• cm)19.3~19.7

Ø19.0592.7~118.6 N• m

(990~1210 Kgf• cm)23.1~23.7

Welding of refrigerant pipe

Weld on the horizontal line or a level below. Do not weld on a level above if

not necessary.

welding areahand valve

plug

pressure adjuster

pressurehose

N2 pot

N2

Pay attention to the direction and angle of liquid and gas pipe to avoid

refrigerant short circuit or oil cumulation.

When welding, fill the pipe with 0.2—0.5 Kgf/cm N .After welding, leave

the pipe naturally cooling or cool it with N 2. Do not sprinkle cold water onto

pipe because it will cause crack by sudden cold.

Bend the pipe as less as possible, if the pipe must be bended, choose a large

bending radius;

22

Standard for distance between sustentions of horizontal pipe is shown in the

table below:

Diameter(mm) < 20 25~40 50

Maximum distance (m) 1.0 1.5 2.0

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Blow wash on pipes

Pipes must be blew by N2 after installation because during installation, there

must be some dust and moisture getting into pipes.

A B

liquid pipe

gas pipe

pressure adjuster outdoor unit

indoor unit

leave the joints unconnected temporarily,

cover them with adhesive tape

Use N to blow. There must be a pressure adjuster on N pot.

Connect pressure adjuster and inlet of liquid pipe of outdoor unit with

pressure hose.

2 2

22

2

2

Block all the joints of liquid pipe except indoor unit A with the plugs.

Open N pot and set the pressure to 5Kgf/cm .

Make sure that N goes through the liquid pipe which is connected to indoor

unit A. (Joints on the other side of indoor unit should be covered by adhesivetape to avoid dust to be blown in.)

Blow wash：

a. Block the liquid pipe of indoor unit A with some insulant in hand.

b. Remove the insulant quickly when the pressure is hard to resist and let

N eject out of the pipe( first blow wash).

c. Perform step a and b again (second blow wash).

d. Place a piece of clean cloth at the outlet, after N ejects onto the cloth,

some dirt will be found on the cloth. If the cloth becomes wet, it means that

there is water in the pipe. Blow again until there is no dirt found on the cloth

and the cloth no longer becomes wet.

Redo steps above on indoor unit B.

After blow wash on liquid pipe, perform it again on gas pipe.

Leakage test and thermal insulation on refrigerant pipe

Step1:Perform leakage test on the indoor unit and the pipe after installation.

Charge the system with N from liquid and gas pipe to stated pressure( unit

for R22——28Kgf/cm , unit for R410A——38Kgf/cm ）. step2:Maintain the

pressure for 24 hours, and then check whether the pressure goes down.

Make sure that the whole system is airtight;

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Caution: If temperature of the air changes in the two steps, pressure shall be

justified with the equation below:

actual pressure ＝ pressure of step1 ＋（air temperature of step1 －

air temperature of step2）×0.1Kgf/cm

Perform thermal insulation on gas and liquid pipe respectively after no

leakage on the pipe.

2

WRONG CORRECT

● Gas pipe and liquid

pipe must be insulated

respectively

● Pipe joint must be

insulated also

● Insulate only gas pipe

(Cooling Only Model)

● Insulate both gas and

liquid pipe

● Support of insulate

material & pipe

liquid pipe

the joint

has’t be

insulated

liquid

pipe

liquid pipegas pipe

gas pipe

gas

pipecontrol

cable

control

cable

cuprum pipe

insulation

metal

support

arc washer

control

cable

tie bandtie band tie band

insulationinsulation

insulation insulation

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Drainpipe installation

Sustention of drainpipe

The diameter of drainpipe should be adapted to the capacity of the indoor

unit.

Make the drainpipe as short as possible and a lean must be set;

Maintain a steady lean to prevent water from flowing back;

Do not force on the joint when connecting drainpipe to indoor unit;

Space for sustention of horizontal pipe:

Type Pipe diameter Distance

Hard PVC pipe 25~40mm 1/100)

hanging stick

horizontal drain

pipe(slope>1/100)

MVRH/MVRF

clear terminal

of drainpipe

“U” trap

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With water pump:

Height of the drainpipe outside the indoor unit should be less than 500mm, or

there might be a leakage of water;

Horizontal drainpipe must have a lean no less than 1/100, and be supported

by hanging sticks；

1~1.5m≥20mm

≤500mm

≤300mm hanging stick

horizontal drain pipe

(slope>1/100)

ceiling

indoor unit

centralized draining

Without water pump:

≥100

≥100

indoor unit

indoor unit indoor unit indoor unitindoor unit

indoor unit indoor unit

ceiling

ceiling

central drainpipe slope≥1/100

central drainpipe slope≥1/100

MVRS/MVRD

MVRH/MVRF

With water pump:

If more than 3 indoor units, please install the main exhaust pipe in front of the

indoor unit which is farthest away from the main drainpipe.

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1~1.5m

≤500

hanging

stick

main exhaust pipe

central draipipe

slope≥1/100

indoor unit indoor unit indoor unit

ceilingmain drainpipe

Draining test and thermal insulation of drainpipe

Perform draining test after drainpipe installation: Inject 2L water into the

indoor unit and make sure that the water flows out from drainpipe；

If the indoor unit has a water pump, run the unit in cooling mode and check its

draining；

Make sure that there is no water leakage；

Perform thermal insulation to drainpipe after draining test.

MVRS/MVRD

drainpipe drainpipe

MVRH/MVRF

•

•

•

•

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Installation of power supply and

communication cable

Choose power supply cable and

communication cable under local

or national rules;

Protect all wires with wire tube;

Use specified wires and make sure

that they are steadily connected.

Do not force on terminal block.

Specifications for

power supply cable

Specifications for power supply

cable of indoor unit are shown as

below:

power supplyvoltage

（V）

Z

power

supply cable

ground

wire

220V～/50H 242/198 ≥1.5mm2 1.5mm2

When tota l power is over

1700W ( e.g. units with electric

hea t e r ) , d i am e t e r o f t he

power supply cable should be

enlarged.

Distr ibut ion box should have

a fuse and switch for each

indoor unit , considering the

capacity of each.

If a breaker is connected to more

than one indoor unit, the breaker

should have a larger capacity;

Specifications for

communication cable

Use 0.75-1.25 mm polythene STP

as communication cable between

indoor and outdoor units;

Do not connect power supply

2

•

•

•

•

•

•

•

•

•

cable to communication port!

Communicat ion cables must

be ins ta l led. Tota l length of

communication cables should be

less than 1000m.

Do not connect communication

cables when power is on. Do not

pull out communication cables

when power is on. Do that after the

power is off.

To avoid the interference of strong

signal, communication cables must

be screened by STP.

Choose STP which has a tighter

screen layer, as shown in the

picture below.

Do not connect signal A with signal

B, as shown in the picture below.When power supply and communication

cables are parallel,maintain a

necessary distance between

power supply and communication

cables.

A：Outside protecting layer (PVC)

B：Screen layer

C：Insulation material

D：Conductor （copper ）

A1 B1 A1 B1

Indoor controller 1 Indoor controller 2

communication port communication port

Connect A with B,wrong

•

•

•

•

•

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Installation of power supply and

communication cable

Installation of power supply cablepower supply

L2L1 L3 N

indoor unit 1

L2L1 L3 N

indoor unit 2 indoor unit i......

fuse

L2L1 L3 N

RSTN RSTN

switch

fuse

fuse fuse

switch

switch

switch switch

fuse

Installation of communication cable

。。。

A2 B2

communication port

Slave outdoor controller 1

Slave outdoor controller 2

A2 B2

communication port

communication cable

Main outdoor controller

screen layer must be grounded with outdoor unit .

Indoor controll er 1 I ndoor cont roller 2 Indoor contr ol ler i

communication port communication port communication port

J15 A1 B1

to central

control

devices

(optional) A1 B1 A2 B2 A B

communication cable

communication cable shouldbe layed as bus structure.

J15 of last

unit on main

bus should be

on

A1 B1 A1 B1

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Installation of communication cable

for wired controller

Installation of communication cable:

SLM

1 2 3 4 5 6 7 8

ON DIP

1 2 3 4 5 6 7 8

ON DIP

1 2 3 4 5 6

ON DIP

RESET

S1 S2 S3

A 1 B 1 A 2 B 2

ON/OFF

SU N M ON T U E WED T H U F R I ST A

PM

开机

关机

Indoor controller

communication cable for

wired controller

Some communication cable for wired controller is offered with the indoor unit.

If not enough for installation, it can be bought from the franchiser.

Fasten

After the indoor unit is installed, educe communication cable from indoor unit;

Remove backboard from wired controller;

Fasten dead plate and backboard on the wall with tapping screw. The height

should be above 1.5m to prevent the controller from being reset by kids;

Connect indoor controller with wired controller by communication cable throughbackboard;

Aim the cover of wired controller at the backboard. Push it, you will hear a

click, it means wired controller is steadily fixed on the wall.

(The dead plate is offered with wired controller)

backboard

cover of wired controller dead plate

tapping screw

wall

communication cable

•

•

•

•

•

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Installation of communication cable:

Installation for centralized

controller

。。。

A B

the indoor

unit 1

communication cableof the indoor and

outdoor unit

A1 B1

A1 B1 A1 B1

A B

communication cable

of centralizedcontroller

method 1:

method 2:

GND

transformer

input：220VACoutput：7.5VDC

power supply:

220V ~

A1 B1GND

A1 B1

A1 B1 A1 B1 A1 B1

A1 B1 A2 B2

A1 B1 A2 B2

+

。。。

the indoor

unit 2

the indoor

unit i

centralizedcontroller

communication cable

of the indoor and

outdoor unit

the indoor unit 1

the indoor unit 2

the indoor unit i

power supply:220V ~

transformer

input：220VAC

output：7.5VDC

centralizedcontroller

communication cableof centralized

controller

Fasten

Fix the centralized controller to the wall with tapping screw. Just as the installation of wired controller.

There is no communication cable with the centralized controller. Communication cable can be bought from franchiser.

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Instruction on code setting

IP address of indoor unit will be distributed by outdoor controller, so it is not

necessary to set it.

Capacity and model code was set when the production left factory, make sure

that they are correct.

SLM

1 2 3 4 5 6 7 8

ON DIP

1 2 3 4 5 6 7 8

ON DIP

1 2 3 4 5 6

ON DIP

RESET

S1 S2 S3

A 1 B 1 A 2 B 2

Indoor controller

capacity

code

function

code

model

code

S1: Capacity code of indoor unit

CapacityS1

1 2 3 4 5 6 7 8

MVR*022 0 0 0 0 1 0 0 0

MVR*025 0 0 0 0 1 0 0 1

MVR*028 0 0 0 0 1 0 1 0

MVR*032 0 0 0 0 1 1 0 0

MVR*036 0 0 0 0 1 1 1 1

MVR*040 0 0 0 1 0 0 0 0

MVR*045 0 0 0 1 0 0 1 0

MVR*050 0 0 0 1 0 0 1 1

MVR*056 0 0 0 1 0 1 0 0

MVR*063 0 0 0 1 1 0 0 1

MVR*071 0 0 0 1 1 1 0 0

MVR*080 0 0 0 1 1 1 1 0

MVR*090 0 0 1 0 0 0 1 1

MVR*100 0 0 1 0 1 0 0 0

MVR*112 0 0 1 0 1 1 0 1

MVR*125 0 0 1 1 0 0 1 0

MVR*140 0 0 1 1 1 1 0 0

•

•

Code setting of indoor unit

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Example：If the unit is MVR*022，then S1 is 00001000，shown as below：

S1

S3：Model and function code

Number Function 0 1

S3

1

-

/ /

2 / /

3 Electric heater 2

Electric heater 1

Without electric

heater 2

Without electric

heater 1

With electric

heater 2

With electric

heater 14

ModelS3

5 6 7 8

MVRD

MVRS

MVRH

MVRC

MVRX

MVRH

MVRF

0 0 0 0

0 0 0 1

0 0 1 0

0 0 1 1

0 1 0 0

0 1 0 1

0 1 1 0

Example: MVRX, with 1 electric heater, then S3 is 00010100，shown as below:

S3

Code setting of indoor unit

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Direction on failures

Solution of easy problems

Failure Reason Solution

The fan of the indoor unit

does not work.

Room temperature is higher (when heating) or lower

(when cooling) than set temperature.Reset temperature of the room

When start running in heating mode, fan of indoor unit

does not work at first. System is avoiding to blow cold air in.Wait 4 minutes

The unit does not work.Power supply is off Check and open power supply“timer on” function is set. Cancel the function or wait

Fuse of the circuit is burnt. Change a new fuse

Cool or warm wind is not

adequate.

Filter is too dirty. Clean or change the filter

Ventilation of the indoor unit is not goodRemove the blockage

Ventilation of outdoor unit is not good.

Wireless remote controller

does not display clearly or

does not work.

Voltage of battery is not adequate Change battery

Battery is not correctly installed. Reinstall correctly

Wireless remote controller is too far away from the unit.

(over 6 meters)

Get closer to the unit

Electric appliance such as fluorescent lamp is turning

on or off Wait a second

Condensing water appearson the panel of indoor unit. Air moisture is too great. Dehumidify

The indoor unit might stop

when the system is running

in heating mode.

System is defrosting. Wait until defrosting is over

Fan stops working when

dehumidifying.

Do fan and compressor run or not when dehumidifying is

controlled by program. This phenomenon is normal.

Wait until system works normally

again.

Solution of failureIf users cannot solve the problem, please contact with local repair department and record the failure code displayed

on wired controller or wireless remote controller:

If failure happens when wireless remote controller is being used, the defrost light of remote signal receiver on the indoor

unit will glitter (once per second, 2.5 seconds between groups):

Glitter times Failure Glitter times Failure

1 Failure on indoor temperature sensor 2 Failure on temperature sensor at inlet

3Failure on temperature sensor at middle of the heat

exchanger 4 Failure on temperature sensor at outlet

5

Failure on communication between indoor and

outdoor unit 6 Conflict between running modes

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If failure happens when wired controller is being used, failure codes will display on wired controller. Failure codes

are shown as below:

Failure code Failure

Indoor unit

00 Failure on communication between indoor and outdoor unit

01 Failure on sensor of indoor unit

02 Conflict between running modes

Master unit

10 Fire alarm

11 Failure on sensor of outdoor unit

12 Compressor or fan overloading

13 Compressor contactor conglutination

14 Failure on parameter overtop the set area

15 General failure

16 System failure

Note: When failure happens on the 1# slave unit, the failure code will display “2※” on wired controller. When failure

happens on the 2# slave unit, the failure code will display “3※” on wired controller. For example: 33 is the failure of

compressor contactor conglutination which happens on the 2# slave unit.

If failure happens when centralized controller is being used, failure code will display on centralized controller.

Failure code is shown as below:

Code Meaning Code Meaning

0 High pressure exceeds limitation 20 Overloading of compressor 3

1 Overloading of fan 21 Failure on sensor of low pressure

2 - 22 Failure on sensor of high pressure

3 Fire alarm 23 -

4 - 24 Conglutination on contactor 1



7 - 27 Slave unit 1 failure in communication

8 TH1 failure 28 Slave unit 2 failure in communication

9 TH2 failure 29 Slave unit 3 failure in communication

10 TH3 failure 30 -

11 TH4 failure 31 Memory failure

12 TH5 failure 32 Refrigerant leakage

13 TH6 failure 33 Four-way valve failure

14 TH7 failure 34 Little superheat

15 TH8 failure 35 Low pressure exceeds limitation

16 Failure on sensor 1 of fan 36 Exhaust temperature exceeds limitation

17 Failure on sensor 2 of fan 37 Environment temperature exceeds limitation

18 Overloading of compressor 1

Overloading of compressor 2

38 No communication

1

101~164 Failure on communication between indoor and outdoor unit.132 means Failure on communication between 32#indoor unit and the outdoor unit.

9 39 System error

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Direction on failures

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Trane

www.trane.com

LiteratureOrder Number

Date

Supersedes

Stocking Location

VRF-SVN02A-EN

Sep 2008

New

China

iom-indoor inverter trane

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