Service Tools - Daikin ALTHERMA HT ERSQ 011 AA Service Manual

ESIE09-08A
1.3

Service Tools

R-410A is used under higher working pressure, compared to previous refrigerants 
(R-22,R-407C). Furthermore, the refrigerating machine oil has been changed from Suniso oil to Ether oil,
and if oil mixing is occurred, sludge results in the refrigerants and causes other problems. Therefore,
gauge manifolds and charge hoses that are used with a previous refrigerant (R-22,R-407C) can not be
used for products that use new refrigerants.
Be sure to use dedicated tools and devices.
 Tool compatibility
Gauge manifold
Charge hose
Charging cylinder
Gas detector
Vacuum pump
(pump with reverse flow
preventive function)
Weighting instrument
Charge mouthpiece
Flaring tool (Clutch type)
Torque wrench
Pipe cutter
Pipe expander
Pipe bender
Pipe assembling oil
Refrigerant recovery
device
Refrigerant piping
 Copper tube material and thickness
* O: Soft (Annealed)
Precautions for New Refrigerant (R-410A)
Tool
R-410A
As for the charge mouthpiece and packing, 1/2UNF20 is necessary for mouthpiece size of charge
hose.
Pipe size
Material
φ6.4
φ9.5
φ12.7
φ15.9
φ19.1
φ22.2
1/2H
φ25.4
1/2H
φ28.6
1/2H
φ31.8
1/2H
φ38.1
1/2H
φ44.5
1/2H
H: Hard (Drawn)
Compatibility
HFC HCFC
R-407C R-22














Check your recovery device.
See the chart below.
R-407C
Thickness
t (mm)
O 0.8
O 0.8
O 0.8
O 1.0
O 1.0
1.0
1.0
1.0
1.2
1.4
1.6
Precautions for New Refrigerant (R-410A)
Reasons for change

Do not use the same tools for R-22 and R-
410A.

Thread specification differs for R-410A
and R-407C.

Weighting instrument used for HFCs.

The same tool can be used for HFCs.

To use existing pump for HFCs, vacuum
pump adapter must be installed.

Seal material is different between R
and HFCs.

Thread specification is different between
R-410A and others.

For R-410A, flare gauge is necessary.

Torque-up for 1/2 and 5/8

Due to refrigerating machine oil change.
(No Suniso oil can be used.)

Only 19.1 is changed to 1/2H material
while the previous material is "O".
R-410A
Thickness
Material
O
O
O
O
1/2H
1/2H
1/2H
1/2H
1/2H
1/2H
1/2H
-
22
t (mm)
0.8
0.8
0.8
1.0
1.0
1.0
1.0
1.0
1.1
1.4
1.6
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