15
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Piping installation
Installer and user reference guide
91
LREN8~12A7 + LRNUN5A7
CO₂ ZEAS outdoor unit and capacity up unit
4P704142-1 – 2022.08
a
a
90
˚
a
Brazing rod
15.3.6 Guidelines to connect T-joints
INFORMATION
Piping joints and fittings shall comply with the requirements of EN 14276-2.
CAUTION
ALWAYS use K65 T-joints for refrigerant branching.
K65 T-joints are field supplied.
Liquid piping
Always branch horizontally when connecting the branch piping.
To prevent uneven refrigerant flow, always branch downwards when using a
header.
a
b
a
b
a
Coming from the outdoor units
b
Going to the indoor units
Gas piping
Always branch horizontally when connecting the branch piping.
To prevent refrigerant oil flowing into the indoor units, always set the branch
piping above the main piping.
c
a
b
c
a
a
b
d
a
Coming from the indoor units
b
Going to the outdoor units
c
Main refrigerant pipe
d
Slanting downwards
NOTICE
Where joints are used on piping, avoid damage caused by freezing or vibration.
