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2.2
Necessary Tools and Instrument List for Installation
No.
Tool
1
Handsaw
Phillips
2
Screwdriver
3
Vacuum Pump
Refrigerant Gas
4
Hose
5
Megohmmeter
Use tools and measuring instruments only for the new refrigerant which is directly touch to refrigerant.
": Interchangeability is available with current R22
: Prohibited
Measuring Instrument and Tool
Pipe Cutter
Chamfering Reamer
Flaring Tool
Extrusion
Adjustment Gauge
Pipe Bender
Expanding Tool
Refrigerant
Pipe
Torque Wrench
Brazing Tool
Nitrogen Gas
Lubrication Oil
(for Flare Surface)
Refrigerant
Cylinder
Vacuum Pump
Adapter for
Vacuum Pump
Manifold Valve
Vacuum
Drying
Charging Hose
.
Refrigerant
Charge
Charging Cylinder
Weight Scale
Refrigerant Gas
Leakage Detector
/: Interchangeability with R407C.
No.
Tool
6
Copper Pipe Bender
7
Manual Water Pump
8
Pipe Cutter
9
Brazing Kit
10
Hexagon Wrench
G: only for Refrigerant R410A (No Interchangeability with R22)
!: only for Refrigerant R407C (No Interchangeability with R22)
Interchangeability
Reason of Non-Interchangeability and Attention
with R22
R410A
R407C
"
"
" G
"
* The flaring tools for R407C are applicable to R22.
* If using flaring tube, make dimension of tube
G
larger for R410A.
-
* In case of material 1/2H, flaring is not available.
* In case of material 1/2H, bending is not available.
"
"
Use elbow for bend and braze.
* In case of material 1/2H, expanding of tube is not
"
"
available. Use socket for connecting tube.
G
"
* For q12.7, q15.88, spanner size is up 2mm.
* For q6.35, q9.53, q19.05, spanner size is
"
"
the same.
"
"
* Perform correct brazing work.
* Strict Control against Contamin
"
"
(Blow nitrogen during brazing.)
* Use a synthetic oil which is equivalent to the oil
G
!
used in the refrigeration cycle.
* Synthetic oil absorbs moisture quickly.
* Check refrigerant cylinder color.
G
!
# Liquid refrigerant charging is required regarding
zeotoropic refrigerant.
#
The current ones are applicable. However, it is
"
"
required to mount a vacuum pump adapter which
can prevent from reverse flow when a vacuum
/
G
!
pump stops, resulting in no reverse oil flow.
* No interchangeability is available due to higher
G
!
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
G
!
sludges, resulting in clogging or compressor failure.
Connection diameter is different; R410A: UNF1/2,
R407C: UNF7/16.
* Use the weight scale.
"
"
/ /
* The current gas leakage detector (R22) is not
G
!
applicable due to different detecting method.
No.
Tool
11
Spanner
12
Charging Cylinder
13
Gauge Manifold
14
Cutter for Wires
15
Gas Leak Detector
(#: Strictly Required)
-
-
3
No.
Tool
16
Leveller
Clamper for Solder-
17
less Terminals
Hoist
18
(for Indoor Unit)
19
Ammeter
20
Voltage Meter
Use
Cutting Pipe
Removing Burrs
Flaring for Tubes
Dimensional Control
for Extruded Portion
of Tube after Flaring
Bending
Expanding Tubes
Connection of
Flare Nut
Brazing for Tubes
Prevention from
Oxidation during
Brazing
Applying Oil to the
Flared Surface
Refrigerant Charging
Vacuum Pumping
Vacuum Pumping,
Vacuum Holding,
Refrigerant Charging
and Check of
Pressures
-
Measuring
Instrument for
Refrigerant Charging
Gas Leakage Check
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