11.INSTALLATION TOOLS AND INSTALLATION FLOW CHART
11. Installation tools and installation flow chart
11.1 Necessary tools and instrument list for installation
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 tools and measuring instruments only for the new refrigerant which is direct contact with to 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
Oxidation during
Brazing
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
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