Installation Guide
R32
R32
R32
R32
R32
R32
R32
R32
R32
17
Read Before Installation
Items to Be Checked
(1
).
Verify the type
of
refrigerant used by the unit to be serviced. Refrigerant Type:
(2). Check the symptom exhibited by the unit to be serviced. Look
in
this service handbook for symptoms relating to the
refrigerant cycle.
(3). Be sure to carefully read the safety precautions at the beginning
of
this document.
(4
).
If there is a gas leak or if the remaining refrigerant is exposed to
an
open flame, a noxious gas hydrofluoric acid may
form. Keep workplace well ventilated.
CAUTION
• Install new pipes immediately after removing old ones to keep moisture out
of
the refrigerant circuit.
• Chloride
in
some types
of
refrigerants such as R22 will cause the refrigerating machine oil to deteriorate.
Necessary Tools and Materials
Prepare the following tools and materials necessary for installing and servicing the unit.
Necessary tools for use with (Adaptability
of
tools that are for use with R22 and R407C).
1.
To
be used exclusively with ( Not to be used if used with R22
or
R407C )
Tools/Materials Use Notes
Gauge Manifold Evacuating.refrigerant charging 5.09MPa on the High-pressure side.
Charging Hose Evacuating, refrigerant charging Hose diameter larger than the concentional ones.
Refrigerant Recovery Equipment Refrigerant recovery
Refrigerant Cylinder Refrigerant charging Write down the refrigerant type. Pink
in
color at the top
of
the cylinder.
Refrigerant Cylinder Charging Port Refrigerant charging Hose diameter larger than the conventional ones.
Flare Nut Connecting the unit to piping Use Type-2 Flare nuts.
2.
Tools and materials that may be used with with some restrictions
Tools/Materials Use Notes
Gas leak detector Detection
of
gas leaks The ones for HFC type refrigerant may be used.
Vacuum Pump Vacuum drying May
be
used if a reverse flow check adaptor is attached.
Flare Tool Flare machining
of
piping Chages have been made
in
the flare machining dimension.Refer to the next page.
Refrigerant Recovery Equipment Recovery
of
refrigerant May
be
used if designed for use with
3.
Tools and materials that are used with R22 or R407C that can also be used with
Tools/Materials Use Notes
Vacuum Pump with a Check Valve Vacuum drying
Bender Bending pipes
Torque Wrench Tightening flare nuts
Only
cj:,12.70
(1/2") and
cj:,
15.88(5/8") have a larger flare machining dimension.
Pipe Cutter Cutting pipes
Welder and Nitrogen Cylinder Welding pipes
Refrigerant Charging Meter Refrigerant charging
Vacuum Gauze Checking vacuum degree
4.
Tool
and materials that must not used with
Tools/Materials Use Notes
Charging Cylinder Refrigerant Charging Must not be used with -type units.
Tools for must be handled with special care, and keep moisture and dust from entering the cycle.