Samsung MXJ-YA1509 Series Installation Manual page 57

Important points Important points
▶ ▶
① ① The thickness of the thermal insulation material must be determined in the light of the pipe The thickness of the thermal insulation material must be determined in the light of the pipe
sizes. Pipe size in. (mm) Thickness of insulation material sizes. Pipe size in. (mm) Thickness of insulation material
Pipe size Pipe
1/4~ 1/4~  
② ② It will be necessary to increase the values in the above table for top floors or where conditions It will be necessary to increase the values in the above table for top floors or where conditions
are hot and humid. (Refer are hot and humid. (Refer to Installation manual "6-5 Pipe insulation" for more detail
③ ③ Where a customer supplies his own specifications then these must be adhered to. Where a customer supplies his own specifications then these must be adhered to.
Where it is anticipated that the air conditioning unit will be operated at external air Where it is anticipated that the air conditioning unit will be operated at external air
④ ④
temperatures of 10°C or less then thermal insulation will also be required for the liquid pipes. temperatures of 10°C or less then thermal insulation will also be required for the liquid pipes.
Heat Recovery Heat Recovery
Series Series
3 3 piping piping section section (between outdoor
2) Insulating the refrigerant pipe 2) Insulating the refrigerant pipe
(1) Insulating the refrigerant (1) Insulating the refrigerant
You must check if there is a gas leak before completing all the installation process. You must check if there is a gas leak before completing all the installation process.
Use EPDM insulation which meets the following condition. Use EPDM insulation which meets
Density Density
Dimension Dimension change
Water absorption Water
Thermal conductivity Thermal conductivity
Moisture Moisture transpiration
Moisture Moisture transpiration
Formaldehyde Formaldehyde dispersion
Oxygen rate Oxygen
size in(mm) in(mm) Thickness Thickness of of insulation
1 1 (6.4mm~25.4m (6.4mm~25.4mm) m)
to Installation manual "6-5 Pipe insulation" for more detail) )
Suction, Discharge Gas piping, liquid piping must be insulated. Suction, Discharge Gas piping, liquid piping must be insulated.
Example of thermal insulation work. Example of thermal insulation work.
(between outdoor unit unit and and MCU
If you think that the humidity around the cooling piping might exceed 86°F If you think that the humidity around the cooling piping might exceed 86°F
and RH80%, reinforce the insulation on the cooling piping (at least 13/16" and RH80%, reinforce the insulation on the cooling piping (at least 13/16"
thick). Condensation might form on the surface of the insulation. thick). Condensation might form on the surface of the insula
Item Item
change route route by by heat heat
absorption rate rate
transpiration factor factor
transpiration grade grade
dispersion
rate
insulation material material
1/2 1/2 or or more more (12.5mm (12.5mm or or more)
MCU unit) unit) 2 2 piping piping section section (between
the following condition.
Unit Unit
3 3
g/cm g/cm
% %
3 3
g/cm g/cm
kcal/m·h·˚C kcal/m·h·˚C
ng/(m²·s·Pa) ng/(m²·s·Pa)
g/(m²·24h) g/(m²·24h)
mg/L mg/L
% %
57 57
Installation guide Installation guide
more)
(between MCU MCU unit unit and and indoor
Standard Standard
0.048~0.096 0.048~0.096
-5 -5 or or less less
0.005 or or less 0.005 less
0.032 or less 0.032 or less
15 or or less 15 less
15 15 or or less less
- -
25 25 or or less less
indoor unit) unit)
tion.