73
OD
(mm)
Pipe diameter and thickness
:
6.35
0.8
Be sure to use hard (tempered) one for pipe over
:
19.05(RP250)/
:
22.2(RP200).(Do not use soft (annealed) one.)
0.8
0.8
1.0
1.0
1.0
1.0
1.0
:
9.52
:
12.7
:
15.88
:
19.05
:
22.2
:
25.4
:
28.58
1.1
:
31.75
Thickness
(mm)
1
4 Number of pipe bends
Within 15 points
8 points between main pipe A and
each branch pipe (B, C, D, E).
2
3 Distance between indoor and indoor units
pipe length. Max. 8m
B—C B—D B—E
C—D C—E D—E
Indoor unit
Outdoor unit
Main piping
Branch piping
Multi distribution
pipe (option)
E
A
1
B
C
2
Height difference (Indoor unit-
Outdoor unit) Max. 30 m
Height difference (Indoor unit-
Indoor unit) Max. 1 m
D
Permissible total
A+B or A+C
Charge-less
Outdoor unit
piping length
or
piping length
A+B+C+D+E
A+D or A+E
A+B+C+D+E
RP200
120 m and less
100 m and less
30 m and less
PR250
B-C or B-D or
Outdoor unit
B-E or C-D or
Number of
pipe bends
C-E or D-E
RP200
8 m and less
Within 15
RP250
<Table 6> Lowered cooling capacity by the smaller gas pipe diameter
5m and less
6~10m
11~20m
21~30m
31~40m
41~50m
100%
100~95%
95~88%
88~83%
83~79%
79~75%
100%
100~88%
88~77%
Pipe length
gas pipe
:
22.2
gas pipe
:
19.05
Cooling capacity ratio
<Table 7> Additional refrigerant amount when the liquid pipe of the larger diameter is used.
(Single /Simultaneous Twin / Simultaneous Triple / Simultaneous Quadruple)
<Table 8>
<Table 9>
Additional refrigerant amount W(g)=(180
%
L
1
)+(120
%
L
2
) (90
%
L
3
)+(30
%
L
4
)-3000
When the extension pipe length (main branch piping) exceeds 20m
Capacity
RP200, RP250
L
1
:
:
15.88 liquid pipe (m)
L
2
:
:
12.7 liquid pipe (m)
L
3
:
:
9.52 liquid pipe (m)
L
4
:
:
6.35 liquid pipe (m)
If the calculation produces a negative number (i.e. a "minus" charge), additional charging is not necessary.
( W
0)
