2
1
TECHNICAL CHANGES
Refrigeration
oil
Refrigerant
New refrigerant
R410A
HFC-32: HFC-125 (50%:50%)
Pseudo-azeotropic refrigerant
Not included
A1/A1
72.6
-51.4
1.557
64
Non combustible
0
1730
From liquid phase in cylinder
Possible
Incompatible oil
Non
Non
Previous refrigerant
R22
R22 (100%)
Single refrigerant
Included
A1
86.5
-40.8
0.94
44.4
Non combustible
0.055
1700
Gas phase
Possible
Compatible oil
Light yellow
Non
Refrigerant
Composition (Ratio)
Refrigerant handling
Chlorine
Safety group (ASHRAE)
Molecular weight
Boiling point (
:
)
Steam pressure [25
:
](Mpa)
Saturated steam density [25
:
](Kg/
K
)
Combustibility
ODP
w
1
GWP
w
2
Refrigerant charge method
Additional charge on leakage
Kind
Color
Smell
w
1 :Ozone Destruction Parameter : based on CFC-11
w
2 :Global Warmth Parameter
: based on CO
2
INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT
• This room air conditioner adopts HFC refrigerant (R410A) which never destroys the ozone layer.
• Pay particular attention to the following points, though the basic installation procedure is same as that for R22 air
conditioners.
1
As R410A has working pressure approximate 1.6 times as high as that of R22, some special tools and piping parts/
materials are required. Refer to the table below.
2
Take sufficient care not to allow water and other contaminations to enter the R410A refrigerant during storage and
installation, since it is more susceptible to contaminations than R22.
3
For refrigerant piping, use clean, pressure-proof parts/materials specifically designed for R410A. (Refer to 2. Refrigerant
piping.)
4
Composition change may occur in R410A since it is a mixed refrigerant. When charging, charge liquid refrigerant to prevent
composition change.
MUZ-A09YV -
➔
MUZ- FA25VA -
MUZ-A09YVH -
➔
MUZ-FA25VAH -
E1
E1
E1
E1
MUZ-A12YV -
➔
MUZ-FA35VA -
MUZ-A12YVH -
➔
MUZ-FA35VAH -
E1
E1
E1
E1
1.Indication of capacity has been changed.(BTU base
➔
kW base)
2.Control method between indoor and outdoor unit has been changed.
3.Power supply method has been changed (change to supply from outdoor unit).
4. Terminal block for power supply has been added.
5.Power P.C.board has been changed.
6.Inverter P.C. board has been changed.
7.Refrigerant circuit has been changed.
• Compressor has been changed.(KNB073FBVH
➔
KNB073FDVH)
• Specification and position of muffler have been changed.
• Path of outdoor heat exchanger has been changed.
• 4-way valve and R.V. coil have been changed.
• Stop valve has been changed.
8.Fan motor has been changed.(AC
➔
DC)
9.Shape of grille has been changed.
10.Shape of service panel has been changed.
11.Shape of propeller has been changed.
12.Quick Clean Kit has been added.
13.Symbol on terminal block has been changed (to S1/S2/S3).
1.Indication of capacity has been changed.(BTU base
➔
kW base)
2.Control method between indoor and outdoor unit has been changed.
3.Power supply method has been changed (change to supply from outdoor unit).
4.Power P.C.board has been changed.
5.Terminal block for power supply has been added.
6.Inverter P.C. board has been changed.
7.Refrigerant circuit has been changed.
• Compressor has been changed.(KNB092FAAH
➔
KNB092FCAH)
• Specification and position of muffler have been changed.
• Outdoor heat exchanger has been changed.
• 4-way valve and R.V. coil have been changed.
• Stop valve has been changed.
8.Fan motor has been changed.(AC
➔
DC)
9.Shape of grille has been changed.
10.Shape of service panel has been changed.
11.Shape of propeller has been changed.
12.Quick Clean Kit has been added.
13.Symbol on terminal block has been changed (to S1/S2/S3).
OB372--1qxp 05.1.17 15:28 Page 2
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