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RMXS112~160D7V3B
Super Multi Plus System air conditioner
4PW19516-1B

Installation manual

6

7.

R

EFRIGERANT

 

PIPE

 

SIZE

 

AND

 

ALLOWABLE

 

PIPE

 

LENGTH

7.1.

Selection of piping material

Foreign materials inside pipes (including oils for fabrication)
must be 

30 mg/10 m.

Construction material: phosphoric acid deoxidized seamless
copper for refrigerant.

Temper grade: use piping with temper grade in function of the
pipe diameter as listed in table below.

The pipe thickness of the refrigerant piping should comply with
relevant local and national regulations. The minimal pipe
thickness for R-410A piping must be in accordance with the
table below.

O=Annealed
1/2H=Half hard

Make sure to use the particular branches of piping that have
been selected.

In case the required pipe sizes (inch sizes) are not available, it is
also allowed to use other diameters (mm sizes), taken the
following into account:

select the pipe size nearest to the required size.

use the suitable adapters for the change-over from inch to
mm pipes (field supply).

8.

P

RECAUTIONS

 

ON

 

REFRIGERANT

 

PIPING

Do not allow anything other than the designated refrigerant to
get mixed into the freezing cycle, such as air, etc. If any
refrigerant gas leaks while working on the unit, ventilate the
room thoroughly right away.

Use R-410A only when adding refrigerant
Installation tools:

Make sure to use installation tools (gauge manifold charge hose,
etc.) that are exclusively used for R-410A installations to
withstand the pressure and to prevent foreign materials (e.g.
mineral oils and moisture) from mixing into the system.

Vacuum pump:

Use a 2-stage vacuum pump with a non-return valve

Make sure the pump oil does not flow oppositely into the system
while the pump is not working.

Use a vacuum pump which can evacuate to –100.7 kPa (5 Torr,
–755 mm Hg).

In order to prevent dirt, liquid or dust from entering the piping,
cure the piping with a pinch or taping.

Great caution is needed when passing copper tubes through
walls.

For handling of stop valves, refer to 

"9.3. How to use the shut-off

valve" on page 8

.

Only use the flare nuts included with the unit. Using different
flare nuts may cause the refrigerant to leak.

Always use the supplied copper gasket when connecting the
gas pipe supplied with the unit. See 

"9. Refrigerant piping" on

page 7.

8.1.

Cautions for brazing

Be sure to carry out a nitrogen blow when brazing.
Brazing without carrying out nitrogen replacement or releasing
nitrogen into the piping will create large quantities of oxidized
film on the inside of the pipes, adversely affecting valves and
compressors in the refrigerating system and preventing normal
operation.

When brazing while inserting nitrogen into the piping, nitrogen
must be set to 0.02 MPa with a pressure-reducing valve (=just
enough so that it can be felt on the skin).

8.2.

Cautions for flare connection

See the following table for flare part machining dimensions.

When connecting the flare nuts, apply refrigerant ether or ester
oil to the inside and outside of the flares and turn them three or
four times at first.

All field piping must be installed by a licensed refrigeration
technician and must comply with relevant local and
national regulations.

To persons in charge of piping work:

Be sure to open the shut-off valve after piping
installing and vacuming is complete. (Running the
system with the valve closed may break the
compressor.)

It is forbidden to discharge refrigerant into the
atmosphere. Collect the refrigerant in accordance
with the freon collection and destruction law.

Do not use flux when brazing the refrigerant piping.
For brazing, use phosphor copper brazing filler metal
(BCuP) which does not require a flux.
(If a chlorine flux is used, the piping will corrode, and if
the flux contains fluoride, it will cause the coolant oil to
deteriorate, adversely affecting the coolant piping
system.

Pipe Ø

Temper grade of piping 

material

Minimal thickness 

t(mm)

6.4 / 9.5 / 12.7

O

0.80

15.9

O

1

19.1

1/2H

1

Installation period

Protection method

More than a month

Pinch the pipe

Less than a month

Pinch or tape the 

pipe

Regardless of the 

period

1

Refrigerant piping

2

Part to be brazed

3

Taping

4

Hands valve

5

Pressure-reducing valve

6

Nitrogen

1

2

3

4

5

6

6

Summary of Contents for RMXS112D7V3B

Page 1: ...INSTALLATION MANUAL RMXS112D7V3B RMXS140D7V3B RMXS160D7V3B System air conditioner Super Multi Plus ...

Page 2: ...0 L2 1 2 H 1 2 H L2 H 0 L1 1 2 H 1 2 H L1 H 0 L2 1 2 H 1 2 H L2 H L2 H L2 H L2 H L2 H L2 H L2 H 150 500 500 500 500 750 100 100 100 100 200 300 200 100 250 250 500 1000 1000 1000 500 500 500 500 1000 1000 1000 1000 500 500 1000 500 1000 1000 300 300 300 250 300 300 500 200 1000 1000 1000 1000 1000 1250 1500 1500 1000 1000 100 5 4 4 3 2 1 7 8 9 10 A D C B 5 6 11 7 2 1 6 1 2 3 4 5 6 7 9 8 12 13 10 1...

Page 3: ...8 2 1 1 1 2 3 4 4 1 50 Hz 1 50 Hz 8 NOTES ...

Page 4: ...11 11 9 16 V 230 V 230 V 1 2 3 2 3 4 1 4 5 A B C A B C F1 F1 F2 F2 F1 F2 F1 F2 4 5 7 1 2 2 C H SELECTOR TO BP UNIT TO OUT D UNIT A1P 3 13 A B C A B C 1 DS1 1 2 3 4 OFF ON O U T I N 14 1 2 3 4 5 4 6 12 F1 F2 1 E 3 2 4 5 A 1 3 2 5 B E 1 2 4 3 5 C E E 1 2 3 4 D E 9 10 11 15 12 13 14 ...

Page 5: ...rd e sau alt e document e normativ e cu condiţia ca acestea să fie utilizate în conformitate cu instrucţiunile noastre 19 skladni z naslednjimi standardi in drugimi normativi pod pogojem da se uporabljajo v skladu z našimi navodili 20 on vastavuses järgmis t e standardi te ga või teiste normatiivsete dokumentidega kui neid kasutatakse vastavalt meie juhenditele 21 съответстват на следните стандарт...

Page 6: ...NSIDERATIONS The precautions listed here are divided into the following two types Both cover very important topics so be sure to follow them carefully RMXS112D7V3B RMXS140D7V3B RMXS160D7V3B System air conditioner Installation manual Super Multi Plus READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLATION KEEP THIS MANUAL IN A HANDY PLACE FOR FUTURE REFERENCE IMPROPER INSTALLATION OR ATTACHMENT OF EQ...

Page 7: ...all drain piping according to this installation manual to ensure good drainage and insulate the pipe to prevent condensation Improper drain piping may cause water leakage and make the furnitures get wet Install the indoor units BP units and outdoor units power wire and connecting wire at least 1 meter away from televisions or radios to prevent image interference or noise Depending on the radio wav...

Page 8: ...th the discharge pipe thermister R3T suction pipe thermister R2T and pressure sensors S1NPH S1NPL removed Such operation may burn out the compressor Be sure to confirm the model name and the serial no of the outer front plates when attaching detaching the plates to avoid mistakes When closing the service panels take care that the tightening torque does not exceed 4 1 N m 3 3 Handling As shown in t...

Page 9: ...talling the unit in a place frequently exposed to snow pay special attention to the following Elevate the foundation as high as possible Remove the rear suction grille to prevent snow from accumulating on the rear fins 7 If you install the unit on a building frame please install a waterproof plate within 150 mm of the underside of the unit or use a drain plug kit option in order to avoid the drain...

Page 10: ...downward The unit of numeric values is mm When routing the piping backward secure space of 250 mm on the right side of the unit A In case of non stacked installation See figure 4 B In case of stacked installation 1 In case obstacles exist in front of the outlet side 2 In case obstacles exist in front of the air inlet C In case of multiple row installation for roof top use etc 1 In case of installi...

Page 11: ...er to 9 3 How to use the shut off valve on page 8 Only use the flare nuts included with the unit Using different flare nuts may cause the refrigerant to leak Always use the supplied copper gasket when connecting the gas pipe supplied with the unit See 9 Refrigerant piping on page 7 8 1 Cautions for brazing Be sure to carry out a nitrogen blow when brazing Brazing without carrying out nitrogen repl...

Page 12: ... the figure Since the side boards may be deformed if only a torque wrench is used when loosening or tightening flare nuts always lock the shut off valve with a wrench and then use a torque wrench Do not place wrenches on the valve cover Do not apply force on the valve cover this may result in a refrigerant leak Pipe size Tightening Torque N m A mm Flare shape Ø9 5 32 7 39 9 12 8 13 2 Ø15 9 61 8 75...

Page 13: ...t and outdoor branch piping come into contact with the compressor terminal cover If the liquid side piping insulation might come into contact with it adjust the height as shown in the figure below Also make sure the field piping does not touch the bolts or outer panels of the compressor When the outdoor unit is installed above the BP unit and indoor unit the following can occur The condensated wat...

Page 14: ...kit 5 m Example a 5 m Allowable height Between outdoor and indoor units Difference in height Difference in height between outdoor and indoor units H1 30 m Between outdoor and BP units Difference in height Difference in height between outdoor and BP units H2 30 m Between BP and BP units Difference in height Difference in height between BP and BP units H3 15 m Between indoor and indoor units Differe...

Page 15: ... 1 hour confirm that the vacuum gauge does not rise 9 9 Additional refrigerant charge See figure 6 Pipe size selection How to calculate the additional refrigerant to be charged Additional refrigerant to be charged R kg R should be rounded off in units of 0 1 kg Piping size outer diameter x minimum thickness Symbol Gas pipe Liquid pipe Between outdoor and first refrigerant branch kit a Ø19 1x1 0 Ø9...

Page 16: ...stops within 30 minutes If the refrigerant charge cannot be finished within 30 minutes repeat step 2 If the operation stops immediately after restart there is a possibility that the system is overcharged The refrigerant cannot be charged more than this amount 4 After the refrigerant charge hose is removed make sure to fully open the liquid stop valve Otherwise the piping may burst due to blocked l...

Page 17: ...d lightning rods dangerous when struck by lightning due to abnormal rise in electrical potential in the grounding This unit uses an inverter and therefore generates noise which will have to be reduced to avoid interfering with other devices The outer casing of the product may take on an electrical charge due to leaked electrical current which will have to be discharged with the grounding 10 3 Conn...

Page 18: ...frequency Voltage Recommended fuses Transmission line section RMXS112 1 N 50 Hz 230 V 32 A 0 75 1 25 mm2 RMXS140 RMXS160 NOTE Select the power supply cable in accordance with relevant local and national regulations Wire size must comply with the applicable local and national code Specifications for local wiring power cord and branch wiring are in compliance with IEC60245 WIRE TYPE H05VV Only in pr...

Page 19: ...0 m Total wiring length 300 m Maximum No of branches 9 Never connect the power supply to unit to unit cabling terminal block Otherwise the entire system may break down 1 Liquid pipe 2 Gas pipe 3 Interconnecting wiring 4 Insulator 5 Finishing tape WARNING ELECTRIC SHOCK Caution when performing service to inverter equipment Do not touch live parts for 10 minutes after the power supply is turned off ...

Page 20: ... A1P The figure shows state of the led indications when the unit is shipped from the factory Setting the mode The set mode can be changed with the button according to the following procedure For setting mode 1 Press the button once the led is off For setting mode 2 Press the button for 5 seconds the H1P led is on If the H1P led is blinking and the button is pushed once it will change to setting mo...

Page 21: ... items are automatically checked Check for miswiring Check if stop valves are open Check of refrigerant charge Automatic judgement of piping length 4 After the test operation maximum 30 minutes the unit automatically stops Check the operation results by the outdoor unit led indication 5 Measure to be taken when operation finishes abnormally 1 Confirm the error code on the remote controller 2 Corre...

Page 22: ...ration manual delivered with the refrigerant reclaimer Installation error Malfunction code Remedial action The stop valve of an outdoor unit is left closed E3 Open the stop valve on both the gas and liquid side Refrigerant overcharge Recalculate the required amount of refrigerant from the piping length and correct the refrigerant charge level by recovering any excessive refrigerant with a refriger...

Page 23: ...allest room volume m3 In a case such as the following calculate the volume of A B as a single room or as the smallest room 3 Calculating the refrigerant density using the results of the calculations in steps 1 and 2 above If the result of the above calculation exceeds the maximum concentration level then make similar calculations for the second then third smallest room and so until the result fall...

Page 24: ...Zandvoordestraat 300 B 8400 Oostende Belgium 4PWEN19516 1B ...

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