![background image](http://html1.mh-extra.com/html/daikin/altherma-ht-ersq-011-aa/altherma-ht-ersq-011-aa_service-manual_4142901293.webp)
ESIE09-08A
Precautions for New Refrigerant (R-410A)
Precautions for New Refrigerant (R-410A)
283
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
As for the charge mouthpiece and packing, 1/2UNF20 is necessary for mouthpiece size of charge
hose.
Copper tube material and thickness
* O: Soft (Annealed)
H: Hard (Drawn)
Tool
Compatibility
Reasons for change
HFC
HCFC
R-410A
R-407C
R-22
Gauge manifold
Charge hose
Do not use the same tools for R-22 and R-
410A.
Thread specification differs for R-410A
and R-407C.
Charging cylinder
Weighting instrument used for HFCs.
Gas detector
The same tool can be used for HFCs.
Vacuum pump
(pump with reverse flow
preventive function)
To use existing pump for HFCs, vacuum
pump adapter must be installed.
Weighting instrument
Charge mouthpiece
Seal material is different between R
-
22
and HFCs.
Thread specification is different between
R-410A and others.
Flaring tool (Clutch type)
For R-410A, flare gauge is necessary.
Torque wrench
Torque-up for 1/2 and 5/8
Pipe cutter
Pipe expander
Pipe bender
Pipe assembling oil
Due to refrigerating machine oil change.
(No Suniso oil can be used.)
Refrigerant recovery
device
Check your recovery device.
Refrigerant piping
See the chart below.
Only
19.1 is changed to 1/2H material
while the previous material is "O".
Pipe size
φ
6.4
φ
9.5
φ
12.7
φ
15.9
φ
19.1
φ
22.2
φ
25.4
φ
28.6
φ
31.8
φ
38.1
φ
44.5
R-407C
Material
O
O
O
O
O
1/2H
1/2H
1/2H
1/2H
1/2H
1/2H
R-410A
Material
O
O
O
O
1/2H
1/2H
1/2H
1/2H
1/2H
1/2H
1/2H
Thickness
t (mm)
0.8
0.8
0.8
1.0
1.0
1.0
1.0
1.0
1.2
1.4
1.6
Thickness
t (mm)
0.8
0.8
0.8
1.0
1.0
1.0
1.0
1.0
1.1
1.4
1.6
Summary of Contents for ALTHERMA HT ERSQ 011 AA
Page 2: ......
Page 7: ...ESIE09 08A Table of Contents v 1 3 Service Tools 283 Index i Drawings Flow Charts iii...
Page 16: ...Model Names of Indoor Outdoor Units Tanks ESIE09 08A 4 General Information...
Page 28: ...Refrigerant Circuit ESIE09 08A 16 Refrigerant Circuit EKHBRD 011 014 016 AB AC V1 Y1...
Page 40: ...Functional Parts Layout ESIE09 08A 28 Refrigerant Circuit...
Page 63: ...ESIE09 08A PCB Layout for EKHBRD 011 014 016 AA AB AC V1 Y1 Refrigerant Circuit 51...
Page 64: ...PCB Layout for EKHBRD 011 014 016 AA AB AC V1 Y1 ESIE09 08A 52 Refrigerant Circuit...
Page 125: ...ESIE09 08A Field Setting Test Operation 113...
Page 232: ...Troubleshooting by Indication on the Remote Controller ESIE09 08A 222 Troubleshooting...
Page 237: ...ESIE09 08A Piping Diagrams Appendix 227 EKHBRD 011 014 016 AB AC V1 Y1...
Page 250: ...Wiring Diagrams ESIE09 08A 240 Appendix EKHBRD 011 014 016 AB AC V1...
Page 251: ...ESIE09 08A Wiring Diagrams Appendix 241...
Page 256: ...Wiring Diagrams ESIE09 08A 246 Appendix EKHBRD 011 014 016 AB AC Y1...
Page 257: ...ESIE09 08A Wiring Diagrams Appendix 247...
Page 260: ...Wiring Diagrams ESIE09 08A 250 Appendix...