User manual
ENGLISH
31
Refrigerant pipe work
Insulating the 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 an insulator around each refrigerant
pipe.
t When insulate the pipe, be sure to overlap the insulation.
t The insulation has to be produced in full compliance of European
regulation reg. EEC / EU 2037/ 2000 that requires the use of
sheaths insulation form without using CFC and HCFC gases for
health and the environment.
NOTE
t When insulating the pipe, use non-slit insulator.
CAUTION
NBR
2. Select the insulation of the refrigerant pipe.
f Insulate the gas side and liquid side pipe referring to the thickness according to the pipe size.
f Less than Indoor temperature of 30°C and humidity of 85% is the standard condition. If installing in a high humidity
condition, use one grade thicker insulator by referring to the table below. If installing in an unfavorable conditions, use
thicker one.
f Insulator’s heat-resistance temperature should be more than 120°C.
Pipe Pipe size
Insulation Type (Heating/Cooling)
Remarks
Standard
[Less than 30°C, 85%]
High humidity
[over 30°C, 85%]
EPDM, NBR
Liquid pipe
Ø6.35~Ø9.52 9t 9t
Internal temperature is
higher than 120°C
Ø12.7~Ø19.05 13t 13t
Gas pipe
Ø6.35 13t 19t
Ø9.52~Ø19.05 19t 25t