Samsung AM AN4PKH Series, Installation Manual

11

English

Installation Pr

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Step 8  Performing the gas leak test

To identify potential gas leaks on the indoor unit, inspect 
the connection area of each refrigerant pipe using a leak 
detector for R-410A.
Before recreating the vacuum and recirculating the 
refrigerant gas, pressurize the whole system with 
nitrogen (using a cylinder with a pressure reducer) at a 
pressure above 0.2 MPa, less than 4 MPa (gauge) in order 
to immediately detect leaks on the refrigerant fittings.
Made vacuum for 15 minutes and pressurizing system 
with nitrogen.

Insulator

Liquid side

Gas side

Step 9  Insulating the refrigerant pipes

Once you have checked that there are no leaks in the 
system, you can insulate the piping and hose.

1 

To avoid condensation problems, place Acrylonitrile 
Butadien Rubber separately around each refrigerant pipe.

No gap

NBR

  NOTE

•  Always make the seam of pipes face upwards.

  CAUTION

•  The insulation has to be produced in full compliance 

wirh European regulation EEC / EU 2037 / 2000 
requiring the use of sheaths insulation without using 
CFC and HCFC gases for health and the environment.

2 

Wind insulating tape around the pipes and drain hose 
avoiding compressing the insulation too much.

Insulation cover pipe

Indoor unit

Insulation pipe

Be sure to overlap the insulation.

  CAUTION

•  Be sure to wrap insulation tightly without any gaps.

3 

Finish wrapping insulating tape around the rest of the 
pipes leading to the outdoor unit.

4 

The pipes and electrical cables connecting the indoor 
unit with the outdoor unit must be fixed to the wall 
with suitable ducts.

  CAUTION

•  Must fit tightly against body without any gap.

•  Make sure that all refrigerant connection must be 

accessible for easy maintenance and detachment.

•  Install the insulation not to get wider and use the 

adhesives on the connection part of it to prevent 
moisture from entering.

•  Wind the refrigerant pipe with insulation tape if it is 

exposed to outside sunlight.

•  Install the refrigerant pipe respecting that the insulation 

does not get thinner on the bent part or hanger of pipe.

•  Add the additional insulation if the insulation plate gets 

thinner.

Additional insulation

Refrigerant pipe 

insulation

Hanger

a

a x 3

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