
10
Application Information
3) Cable Size
Cooling only
Model
Unit
FCRN18FXV1S
FCRN24FXV1S
FCRN30FXV1S
RN18CXV1S2
RR24CXV1S2
RR30CXV1S2
Power supply cable size
Number of wire
mm²
2.5
3
2.5
3
2.5
3
Interconnection cable size
Number of wire
mm²
2.5
4
2.5
4
2.5
4
Recommended fuse
A
16
20
25
Model
Unit
FCRN36FXV1S
FCRN42FXV1S
FCRN45FXV1S
RR36DXV1S2
RR42DXY1S2
RR45DXY1S2
Power supply cable size
Number of wire
mm
2
4.0
3
4.0
5
4.0
5
Interconnection cable size
Number of wire
mm
2
2.5
4
2.5
2.5
2.5
2.5
Recommended fuse
A
25
16
20
4) Refrigerant Piping
When the pipe length becomes too long, both the capacity and reliability drop. As the number of bends
increase, resistance to flow of refrigerant system increases, thus lowering cooling capacity and as a result
the compressor may become defective. Always choose the shortest path and follow the recommendation as
tabulated below:
Model
Indoor
FCRN18FXV1S
FCRN24FXV1S
FCRN30FXV1S
Outdoor
RN18CXV1S2
RR24CXV1S2
RR30CXV1S2
Max. allowable length, m
30
30
45
Max. allowable elevation, m
15
15
25
Liquid pipe size, mm
6.35 / 1/4”
6.35 / 1/4”
9.52 / 3/8”
Gas pipe size, mm
12.70 / 1/2”
15.88 / 5/8”
15.88 / 5/8”
Model
Indoor
FCRN36FXV1S
FCRN42FXV1S
FCRN45FXV1S
Outdoor
RR36DXV1S2
RR42DXY1S2
RR45DXY1S2
Max. allowable length, m
50
50
50
Max. allowable elevation, m
30
30
30
Liquid pipe size, mm / in
9.52 / 3/8”
9.52 / 3/8”
9.52 / 3/8”
Gas pipe size, mm / in
15.88 / 5/8”
15.88 / 5/8”
15.88 / 5/8”