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Installation manual

25

U-5~18MX4XPQ

Urban Multi air conditioner

4PW28163-1

4

Push the 

 button and the setting is defined.

5

When the 

 button is pushed again, the operation

starts according to the setting.

Refer to the service manual for more details and for other settings.

Confirmation of the set mode

The following items can be confirmed by setting mode 1 (H1P
led is off)

Check the led indication in the field marked 

.

1

Indication of the present operation state

-

x

, normal

-

w

, abnormal

-

c

, under preparation or under test operation

2

Indication of COOL/HEAT selection setting

3

Indication of low noise operation state 

-

standard operation (= factory setting)

-

w

 

 operation

4

Indication of power consumption limitation setting 

-

x

 standard operation (= factory setting)

-

w

 

 operation

12.4. Test operation

In case refrigerant was added by using the leak detection 
function

In the check operation, the following checks and judgements will
be performed:

Check of the stop valve opening

Check for wrong wiring

Judgement of piping length

Judgement of initial refrigerant state

It takes ±3 hours (if the outdoor temperature is low, it takes
±4 hours) to complete the check operation.

The system can not perform the judgement of initial refrigerant
state in the following cases:

The outdoor temperature is out of range 
(<0°C DB or >43°C DB)

The indoor temperature is out of range 
(<20°C DB or >32°C DB)

A forced OFF during the test operation

In this case, after performing the check operation, normal
operation is possible although the abnormality code 

U3

  is

displayed on the indoor remote controller and the refrigerant
leakage detection function can not be used. 
Perform the check operation again and complete the judgement
of initial refrigerant state.

Perform the test operation as decribed in the paragraph "Test
operation procedure" on page 26.

In case refrigerant was added without using the leak 
detection function (charging in cooling mode)

In the check operation, the following checks and judgement will
be performed:

Check of the stop valve opening

Check for wrong wiring

Judgement of piping length

It takes ±30 minutes to complete the check operation.

Check operation procedure

1

Close the electric box lid and all front panels except the one on
the side of the electric box.

2

Turn on the power to the outdoor unit and all connected indoor
units. Be sure to turn the power ON at least 6 hours before
operation in order to have power running to the crank case
heater.

3

Make the field setting as needed using the push buttons on the
PCB (A1P) of the outdoor unit. Refer to "Field setting" on
page 23.

H1P

H2P

H3P

H4P

H5P

H6P

H7P

x

x w x

x

x

x

1

When set to COOL/HEAT change-over by each individual outdoor 
unit circuit (= factory setting).

2

Indication on master unit when COOL/HEAT change-over is 
carried out by outdoor system connected in multiple system-
combination.

3

Indication on slave unit when COOL/HEAT change-over is carried 
out by outdoor system connected in multiple system-combination.

H1P

H2P

H3P

H4P

H5P

H6P

H7P

1

(a)

(a) This setting = factory setting.

x

x w x

x

x

x

2

x

x

x w x

x

x

3

x

x

x

x w x

x

H1P

H2P

H3P

H4P

H5P

H6P

H7P

x

x w x

x

x

x

H1P

H2P

H3P

H4P

H5P

H6P

H7P

x

x w x

x

x

x

BS3  RETURN

BS3  RETURN

L.N.O.P

L.N.O.P

DEMAND

DEMAND

Do not insert fingers, rods or other objects into the air
inlet or outlet. When the fan is rotating at high speed, it
will cause injury.

Do not perform the test operation while working on the
indoor units.

When performing the test operation, not only the outdoor
unit, but the connected indoor unit will operate as well.
Working on a indoor unit while performing a test operation
is dangerous.

Summary of Contents for U-5MX4XPQ

Page 1: ...gehandleiding Urban Multi airconditioner Nederlands Manual de instalaci n Acondicionador de aire Urban Multi Espa ol Manuale d installazione Climatizzatore Urban Multi Italiano Urban Multi E Manual de...

Page 2: ...0 mm d 500 mm a 50 mm b 100 mm c 50 mm d 500 mm a 200 mm b 300 mm a 10 mm b 300 mm c 10 mm d 500 mm e 20 mm a 50 mm b 100 mm c 50 mm d 500 mm e 100 mm a 200 mm b 300 mm e 400 mm A B C D A B 3 a 10 mm...

Page 3: ...IT TO OUT D UNIT TO MULTI UNIT A1P 3 A B C F1 F2 F1 F2 Q1 Q2 Q1 Q2 A1P 4 4 5 6 2 1 3 Q1 Q2 7 1 2 1 2 5 3 4 1 6 6 2 2 TO IN D UNIT F1 F2 DS1 1 2 3 4 OFF ON O U T I N F1 F2 F1 F2 F1 F2 1 A B C A B C 1 D...

Page 4: ...the installation manual supplied with these units for their installation 1 1 Combination The indoor units can be installed in the following range Always use appropriate indoor units compatible with R...

Page 5: ...36MX4 U 18MX4 U 18MX4 450 1440 64 U 38MX4 U 18MX4 U 12MX4 U 12MX4 475 1235 61 U 40MX4 U 10MX4 U 12MX4 U 12MX4 500 1300 64 U 42MX4 U 12MX4 U 12MX4 U 12MX4 525 1365 64 U 44MX4 U 8MX4 U 18MX4 U 18MX4 550...

Page 6: ...ak Make sure to provide for adequate measures in order to prevent that the outdoor unit be used as a shelter by small animals Small animals making contact with electrical parts can cause malfunctions...

Page 7: ...ately bears the weight of the unit NOTE Use filler cloth on the forklift arms to prevent damaging the unit If the paint on the bottom frame peels off the anti corrosion effect may decrease Do not use...

Page 8: ...n outdoor and indoor units is 90 m or more the size of the main pipes both gas side and liquid side must be increased Depending on the length of the piping the capacity may drop but even in such a cas...

Page 9: ...e 5 always referring to the installation manual delivered with the kit 4 2 Possible installation patterns and configurations The piping between the outdoor units must be routed level or slightly upwar...

Page 10: ...of straight section can be ensured Improper installation may lead to malfunction of the outdoor unit 6 Piping length restrictions Make sure to perform the piping installation within the range of the m...

Page 11: ...select the line branch pipe When using line branch pipe at the first branch counted from the outdoor unit side Choose from the following table in accordance with the capacity of the outdoor unit For l...

Page 12: ...nd the pipes that not increase the pipe size a b 2 c 2 d 2 e 2 f 2 g 2 h i j k l m n p 1000 m Indoor unit to the nearest branch kit 40 m h i j p 40 m The difference between the distance of the outdoor...

Page 13: ...side stop valve Gas side stop valve Performing the airtightness test and vacuum drying Valve A must always be shut Otherwise the refrigerant in the unit will pour out Close Open Open Close Close NOTE...

Page 14: ...ting S1NPH Pressure sensor high S1NPL Pressure sensor low S1PH 3PH Pressure switch high T1A Current sensor A6P A7P SD1 Safety devices input V1R Power module A4P A8P V1R V2R Power module A3P X1A X4A Co...

Page 15: ...te normally in reversed phase If you connect in reversed phase replace two of the three phases This unit has a reverse phase detection circuit If it is activated only operate the unit after correcting...

Page 16: ...ing sheathed cable 16 V 1 Electric wiring diagram Printed on the back of the electric box lid 2 Power wiring and ground wiring between outdoor units inside conduit When the wiring is routed out throug...

Page 17: ...from the indoor units must be connected to the F1 F2 In Out terminals on the PC board in the outdoor unit After installing the interconnecting wires inside the unit wrap them along with the on site re...

Page 18: ...etc Precautions when laying power wiring Do not connect wiring of different thicknesses to the power terminal block Slack in the power wiring may cause abnormal heat When connecting wiring which is t...

Page 19: ...iring and field piping has been completed Refrigerant may only be charged after performing the leak test and the vacuum drying The refrigerant charge of the system must be less than 100 kg This means...

Page 20: ...nance after installation of the unit BS2 SET BS2 SET BS3 RETURN BS1 MODE When charging a system charging over the permissible quantity can cause liquid hammer Always use protective gloves and protect...

Page 21: ...ct the cooling mode or heating mode for charging Continue with the automatic charging in cooling mode OR in heating mode Charging in heating mode 6 Start up Wait while the unit is preparing for chargi...

Page 22: ...e remote controller When the charging amount is little the PE code may not be displayed but instead the P9 code will be displayed immediately If it is not as shown above correct the malfunction as ind...

Page 23: ...ly charging in cooling mode OR in heating mode Charging in heating mode 6 Start up Wait while the unit is preparing for charging in heating mode 7 Ready Press the button once within 5 minutes If the b...

Page 24: ...er malfunction code display on page 21 H1P H2P H3P H4P H5P H6P H7P w c c w w w w BS4 TEST BS4 TEST BS1 MODE LED display Default status before delivery Micro computer operation monitor Mode Ready Error...

Page 25: ...ant charging from Start of automatic charging refrigerant as explained page 18 again 11 5 Checks after adding refrigerant Are the stop valves for both liquid and gas open Is the amount of refrigerant...

Page 26: ...arts Make sure to re attach the inspection cover 1 into the switch box cover 2 after the job is finished Location of the dip switches leds and buttons Led state Throughout the manual the state of the...

Page 27: ...x Multiple outdoor unit system Master unit a a The state of the H8P multi LED in a multi system shows wich unit is the master unit w slave 1 unit c or slave 2 unit x Only the master unit is connected...

Page 28: ...l refrigerant state Perform the test operation as decribed in the paragraph Test operation procedure on page 26 In case refrigerant was added without using the leak detection function charging in cool...

Page 29: ...he unit operation from a remote controller To abort the operation press the button The unit will stop after 30 seconds 6 Close the front panel in order to let it not be the cause of misjudgement 7 Che...

Page 30: ...ystem uses R410A as refrigerant R410A itself is an entirely safe non toxic non combustible refrigerant Nevertheless care must be taken to ensure that air conditioning facilities are installed in a roo...

Page 31: ...in a concentration in excess of the maximum concentration level then it will be necessary to revise the system Please consult your supplier 15 DISPOSAL REQUIREMENTS Dismantling of the unit treatment o...

Page 32: ...5 1 7 10 3 2 9 6 6 6 6 7 4 11 8 6 6 6 6 6 6 7 7 9 8 4 11 6 6 1 10 3 2 6 6 6 6 27 13 6 9 8 1 2 4 3 5 14 15 16 12 11 10 10 7 28 13 14 3 5 4 2 1 7 8 9 6 10 10 11 10 2 2 12 9 9 29 13 14 3 5 4 2 1 7 8 9 6...

Page 33: ...4PW28163 1...

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