Table of Contents
Advertisement
Performing leak test & insulation
Leak test
To identify potential gas leaks on the indoor unit, inspect the connection area
of each refrigerant pipe using a leak detector for R410A.
Before recreating the vacuum and recirculating the refrigerant gas, it is
advisable to pressurize the whole system with nitrogen (using a cylinder with
pressure reducer) at a pressure above 40 bar in order to immediately detect
leaks on the refrigerant fittings.
Made vacuum for 15 minutes and pressurising system with nitrogen.
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 T13.0 or thicker Acrylonitrile Butadien
Rubber separately around each refrigerant pipe.
requires the use of sheaths insulation form without using CFC and
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.
5 Select the insulation of the refrigerant pipe.
Insulate the gas side and liquid side pipe referring to the thickness
dition.
If installing in a high humidity condition, use one grade thicker insulator by referring to the table below.
Pipe
Pipe size
Liquid
pipe
Ø12.7 ~ Ø19.05
Ø9.52
Ø12.70
pipe
Ø15.88
Ø19.05
10
Insulation Type (Heating/Cooling)
Standard [30°C, less than 85%] High humidity [30°C, over 85%]
EPDM, NBR
9t
13t
13t
19t
Insulation pipe
Indoor unit
the insulation
body without any gap.
Remarks
9t
13t
19t
Internal temperature is
higher than 120°C
25t
Hide quick links:
Advertisement
Table of Contents
