Mitsubishi SUZ-KA35VA Service Manual page 4

SUZ-A18VR SUZ-KA50VA.TH
SUZ-A24VR SUZ-KA60VA.TH
1. Indication of capacity has been changed.(BTU base → kW base)
2. Power supply method has been changed (change to supply from outdoor unit).
3. Outdoor electronic control P.C. board has been changed.
4. Noise filter P.C. board has been changed.
5. Length of fan motor lead wire has been changed.
6. Shape of relay panel has been changed.
7. Symbol on terminal block has been changed (to S1/S2/S3).
8. Control method between indoor and outdoor unit has been changed.
INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT
• This room air conditioner adopts an 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 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.
Refrigerant
Composition (Ratio)
Refrigerant handling
Chlorine
Safety group (ASHRAE)
Molecular weight
Boiling point ( )
Steam pressure [25 ](Mpa)
Saturated steam density [25 ](Kg/
Combustibility
ODP 1
GWP 2
Refrigerant charge method
Additional charge on leakage
Kind
Color
Smell
1: Ozone Depletion Potential
2: Global Warming Potential
OC322G
New refrigerant
HFC-32: HFC-125 (50%:50%)
Pseudo-azeotropic refrigerant
Not included
)
Non combustible
From liquid phase in cylinder
Incompatible oil
: based on CFC-11
: based on CO
2
R410A
A1/A1
72.6
-51.4
1.557
64
0
1730
Possible
None
None
4
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
None