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6

5.

Purging air and checking gas leakage.

• When piping work is completed, it is necessary to purge the air and check for gas leakage.

 WARNING

1) Do not mix any substance other than the specified refrigerant (R410A) into the refrigeration cycle.
2) When refrigerant gas leaks occur, ventilate the room as soon and as much as possible.
3) R410A, as well as other refrigerants, should always be recovered and never be released directly into the environment.
4) Use a vacuum pump for R410A exclusively. Using the same vacuum pump for different refrigerants may damage the vacuum 

pump or the unit.

• If using additional refrigerant, perform air purging from the refrigerant pipes and 

indoor unit using a vacuum pump, then charge additional refrigerant.

• Use a hexagonal wrench (4mm) to operate the stop valve rod.
• All refrigerant pipe joints should be tightened with a torque wrench at the specified 

tightening torque.

*1. Pipe length vs. vacuum pump run time.  

*2. If the compound pressure gauge pointer swings back, refrigerant may have water content or a loose pipe joint may exists.  

Check all pipe joints and retighten nuts as needed, then repeat steps 2) through 4).

1) Connect projection side of charging hose (which comes from gauge manifold) to gas stop valve’s service port.

2) Fully open gauge manifold’s low-pressure valve (Lo) and completely close its high-pressure valve (Hi).  

(High-pressure valve subsequently requires no operation.)

3)  Do vacuum pumping and make sure that the compound pressure gauge reads –0.1MPa (–76cmHg)*1.

4) Close gauge manifold’s low-pressure valve (Lo) and stop vacuum pump.  

(Keep this state for a few minutes to make sure that the compound pressure gauge pointer does not swing back.)*2.

5) Remove caps from liquid stop valve and gas stop valve.

6) Turn the liquid stop valve’s rod 90 degrees counterclockwise with a hexagonal wrench to open valve. 

Close it after 5 seconds, and check for gas leakage.
Using soapy water, check for gas leakage from indoor unit’s flare and outdoor unit’s flare and valve rods.  
After the check is complete, wipe all soapy water off.

7) Disconnect charging hose from gas stop valve’s service port, then fully open liquid and gas stop valves.

(Do not attempt to turn valve rod beyond its stop.)

8) Tighten valve caps and service port caps for the liquid and gas stop valves with a torque wrench at the specified torques.

Pipe length

Up to 15 metres

Run time

Not less than 10 min.

Compound 
pressure gauge

Pressure 
meter

High-
pressure 
valve

Low-pressure 
valve

Vacuum pump

Service port

Liquid 
stop 
valve

Valve caps

Gas stop valve

Charging 
hoses

Gauge 
manifold

Содержание RX20JV1B

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Страница 2: ...Voltage 2006 95 EC Electromagnetic Compatibility 2004 108 EC 3P Takayuki Fujii Managing Director 1st of 201 IKIN TCF 015 201 RX20J RX25J V1B RX35J V1B DEKRA NB0344 74736 KRQ EMC97 4957 U Nove hospody...

Страница 3: ...shape the cables so that they do not put undue force on the electrical covers or panels Install covers over the wires Incomplete cover installation may cause terminal overheating electrical shock or...

Страница 4: ...nding on radio wave conditions 8 In coastal areas or other places with salty atmosphere of sulfate gas corrosion may shorten the life of the air conditioner 9 Since drain flows out of the outdoor unit...

Страница 5: ...onal refrigerant required for refrigerant pipe exceeding 10m in length Be sure to add the proper amount of additional refrigerant Failure to do so may result in reduced perfomance The suggested shorte...

Страница 6: ...oundation surface Outdoor Unit Installation 1 Installing outdoor unit 1 When installing the outdoor unit refer to Precautions for Selecting the Location and the Outdoor Unit Installation Draw ings 2 I...

Страница 7: ...410A 3 Use torque wrenches when tightening the flare nuts to prevent damage to the flare nuts and gas leakage Align the centres of both flares and tighten the flare nuts 3 or 4 turns by hand Then tigh...

Страница 8: ...hose which comes from gauge manifold to gas stop valve s service port 2 Fully open gauge manifold s low pressure valve Lo and completely close its high pressure valve Hi High pressure valve subsequen...

Страница 9: ...d piping and to provide insulation dimensions as below 3 Use separate thermal insulation pipes for gas and liquid refrigerant pipes Gas side Liquid side Gas pipe thermal insulation Liquid pipe thermal...

Страница 10: ...force a test run to stop press the indoor unit operation stop button Using the main unit s remote controller 1 Press the operation stop button Operation will start 2 Press the temperature button and t...

Страница 11: ...that the termi nal numbers match Tighten the terminal screws securely We recommend a flathead screwdriver be used to tighten the screws The screws are packed with the terminal board Observe the notes...

Страница 12: ...sure to perform curling Problems with the work may cause heat and fires 3 Pull the wire and make sure that it does not disconnect Then fix the wire in place with a wire stop Strip wire end to this poi...

Страница 13: ...operation in accordance with the operation manual to ensure that all functions and parts such as louver movement are working properly The air conditioner requires a small amount of power in its stand...

Страница 14: ...12 T rk e MEMO...

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