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11. INSTALLATION TOOLS AND INSTALLATION FLOW CHART
11. Installation tools and installation flow chart
11.1 Necessary tools and instrument list for installation
No. Tool No. Tool No. Tool No. Tool
1
Handsaw
6
Copper Pipe Bender 11 Spanner 16 Leveler
2
Phillips
Screwdriver
7
Manual Water Pump
12
Charging Cylinder
17
Clamper for Solder-
less Terminals
3
Vacuum Pump
8
Pipe Cutter 13 Gauge Manifold 18
Hoist
(for Indoor Unit)
4
Refrigerant
Gas
Hose
9
Brazing Kit 14 Cutter for Wires 19 Ammeter
5
Megohmmeter 10 Hexagon Wrench 15 Gas Leak Detector 20 Voltage Meter
Use specified tools and measuring instruments only for the new refrigerant.
✧ : Interchangeability is available with R410A ●: Only for Refrigerant R32
✕ : Prohibited ✦ : Only for Refrigerant R22
Measuring Instrument
and Tool for R410A
R32 R22
Reason of Non-Interchangeability
and Attention (*: Strictly Required)
Use
Refrigerant
Pipe
Pipe Cutter
Chamfering
Reamer
✧ ✧ -
Cutting Pipe
Removing Burrs
Flaring Tool ✧ ✧
* The flaring tools for R32 are applicable
to R22/R410A.
* If using flaring tube, make dimension
of tube larger for R410A.
* In case of material 1/2H, flaring is not
available.
Flaring for Tubes
Pipe Bender ✧ ✧
* In case of material 1/2H, bending is not
available. Use elbow for bend and braze.
Bending
Expanding Tool ✧ ✧
* In case of material 1/2H, expanding of
tube is not available. Use socket for
connecting tube.
Expanding Tubes
Torque Wrench
✧
✕
* For φ1/2, φ5/8, spanner size is up
2mm.
Connection of Flare
Nut
✧ ✧
* Forφ1/4, φ3/8, φ3/4, spanner size is
the same.
Brazing Tool ✧ ✧ * Perform correct brazing work. Brazing for Tubes
Nitrogen Gas ✧ ✧
* Strict Control against Contamin (Blow
nitrogen during brazing.)
Prevention from
Oxi
Bi
dati
on during
Lubrication Oil
(for Flare
Surface)
● ✦
* Use a synthetic oil which is equivalent
to the oil used in the refrigeration cycle.
* Synthetic oil absorbs moisture quickly.
Applying Oil to the
Flared Surface
Vacuum
Drying&
Refrigerant
Charge
Refrigerant
Cylinder
✕ ✕
* Check refrigerant cylinder color.
* Liquid refrigerant charging is required
regarding zeotoropic refrigerant.
* Use the weight scale.
Refrigerant Charging
Vacuum Pump ✧ ✧
* The current ones are applicable.
However, it is required to mount a
vacuum pump adapter which can prevent
from reverse flow when a vacuum pump
stops, resulting in no reverse oil flow.
Vacuum Pumping
Adapter for
Vacuum Pump
✧ ✦
Manifold Valve ✧ ✦
* No interchangeability is available due to
higher pressures when compared with
R22.
* Do not use current ones to the different
refrigerant. If used, mineral oil will flow
into the cycle and cause sludges,
resulting in clogging or compressor
failure.
* Connection diameter is different;
R32/R410A: UNF1/2, R22: UNF7/16.
Vacuum Pumping,
Vacuum Holding,
Refrigerant Charging
and Check of
Pressures
Charging Hose ✧ ✕
Weight Scale ✧ ✧
Measuring Instrument
for Refrigerant
Charging
Refrigerant Gas
Leakage
Detector
✕ ✕
* The current gas leakage detector (R22)
is not applicable due to different
detecting method.
Gas Leakage Check
41
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