Performing Leak Test & Insulation - Samsung NS 1DXEA Series Installation Manual

Performing leak test & insulation
Leak test
LEAK TEST WITH NITROGEN (before opening valves)
In order to detect basic refrigerant leaks, before recreating the vacuum and
recirculating the R410A, it's responsible of installer to pressurize the whole
system with nitrogen (using a cylinder with pressure reducer) at a pressure
above 30 bar (gauge).
LEAK TEST WITH R410A (after opening valves)
Before opening valves, discharge all the nitrogen into the system and
create vacuum. After opening valves check leaks using a leak detector for
refrigerant R410A.
• Discharge all the nitrogen to create a vacuum and charge the system.
Insulation
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.
• Always make the seam of pipes face upwards.
• 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.
2 Wind insulating tape around the pipes and drain hose avoiding to compress
the insulation too much.
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.
• All refrigerant connection must be accessible, in order to permit
either unit maintenance or removing it completely.
5 Select the insulation of the refrigerant pipe.
 Insulate the gas side and liquid side pipe referring to the thickness
according to the pipe size.
 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.
 Insulator's heat-resistance temperature should be more than 120°C.
Pipe Pipe size
Ø6.35 ~ Ø9.52
Liquid
pipe
Ø12.7 ~ Ø19.05
Ø6.35
Gas pipe
Ø9.52 ~ Ø19.05
10
CAC 유럽향 1way_IM_34507A-05_EN.indd 10
Insulation Type (Heating/Cooling)
Standard [Less than 30°C, 85%] High humidity [Over 30°C, 85%]
EPDM, NBR
9t
13t
13t
19t
No gap
NBR
Insulation cover pipe
Insulation pipe
Indoor unit
Be sure to overlap
the insulation
• Must fit tightly against
body without any gap.
Remarks
9t
13t
Internal temperature is
higher than 120°C
19t
25t
2016-08-02 오후 4:08:10