EDM SYSHP MINI SPLIT 06 16

66
Reasons
Measures
DRY
CLEAN
Parcles such as oxide produced
during brazing and/or building dust
can lead to compressor malfuncon
Moisture can lead to ice formaon or
oxidizaon of internal components
leading to abnormal operaon or
compressor damage
 Seal piping during storage
1
 Flow nitrogen during brazing
2
 Pipe ushing
3
 Pipe ushing
3
 Vacuum drying
4
SEALED
Imperfect seals can lead to refrigerant
leakage
 Pipe manipulaon
5
and brazing
2
techniques
 Gasghtness test
6
3.3 Procedure and Principles
3.3.1 Installaon procedure
Notes for installers

Installaon of the refrigerant piping system should proceed in the following order:
Note: Pipe ushing should be performed once the brazed connecons have been completed with the excepon of the nal
connecons to the indoor units. That is, ushing should be performed once the outdoor units have been connected but
before the indoor units are connected.
3.3.2 Three principles for refrigerant piping
Notes:
1. See Part 3, 3.4.1 “Pipe delivery, storage and sealing”.
2. See Part 3, 3.7 “Brazing”.
3. See Part 3, 3.8 “Pipe Flushing”.
4. See Part 3, 3.10 “Vacuum Drying”.
5. See Part 3, 0 “Manipulang Copper Piping”.
6. See Part 3, 3.9 “Gas ghtness Test”.
Pipe
insulaon
Pipe brazing and
installaon
Pipe
ushing
Gas ghtness test
Joint
insulaon
Vacuum drying