Samsung AE044MXTPEH Mode D'emploi page 20

Installing the Refrigerant Pipe Work
Insulating the Refrigerant Pipe
• You must check if there is a gas leak before
completing all the installation process.
• Use EPDM insulation which meets the following
condition.
Item
Density
Dimension change route
by heat
Water absorption rate
Thermal conductivity
Moisture transpiration
factor
Moisture transpiration
grade
Formaldehyde dispersion
Oxygen rate
Insulating the refrigerant pipe
• Be sure to insulate the refrigerant pipe, joints and
connections with class 'o' material.
• If you insulate the pipes, the condensed water does not
fall from the pipes and the
capacity of the Air to water heat pump is improved.
• Check if there are any insulation cracks on the bent
pipe.
Insulation
Gas side pipe
Liquid side pipe
Indoor
unit
20
English
Unit Standard Remarks
0.048 ~
g/cm²
0.096
KSM 3014-01
% -5 or less
0.005
g/cm²
or less
kcal/ 0.032
KSL 9016-95
m·h·˚C or less
ng/
15 or less KSM 3808-03
(m²·s·Pa)
{g/
15 or less KSA 1013-01
(m²·24h)}
mg/L - KSF 3200-02
ISO 4589-
% 25 or less
2-96
Clamp
Indoor unit
Insulation
Overlapped
Install the insulation
to be overlapped
Brazing the Pipe
• Make sure that there is no moisture inside the pipe.
• Make sure that there are no foreign materials and
impurities in the pipe.
Replacement of Nitrogen gas
1 Use oxygen free nitrogen gas when brazing the pipes
as shown in the picture.
Brazing part
Nitrogen gas
Pressure regulator
2 If you do not use Nitrogen gas when brazing the
pipes, oxidation may form in the pipe. It can cause the
damage of the compressor and valves.
3 Adjust the flow rate of the replacement with a
pressure regulator to maintain 0.05m3/h or more.
4 Perform brazing of the service valve after protecting
the valve.
1/4" copper pipe
Valve stem
Taping