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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
Insulator
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
No gap
NOTE
• Always make the seam of pipes face upwards.
CAUTION
• The insulation has to be produced in full compliance
with European regulation EEC / EU 2037 / 2000
requring the use of sheaths insulation without using
CFC and HCFC gases for heating and the environment.
DB68-11686A-00_IM_DVM 고효율 Wind Free 4way_AA_EN.indd 11
DB68-11686A-00_IM_DVM 고효율 Wind Free 4way_AA_EN.indd 11
Liquid side
Liquid side
Gas side
Gas side
NBR
2 Wind insulating tape around the pipes and drain hose
avoiding compressing the insulation too much.
Insulation cover pipe
Insulation cover pipe
Insulation pipe
Insulation pipe
Indoor unit
Indoor unit
Be sure to overlap the insulation.
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
Additional insulation
a
a x 3
Hanger
Hanger
Refrigerant pipe
Refrigerant pipe
insulation
insulation
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English
2022-02-14 오전 10:11:30
2022-02-14 오전 10:11:30
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