Mitsubishi Electric PUHY-RP-Y(S)JM-B Data Book page 276

3. Piping Design
3-1-3. Pipe diameter compatibility table
(1) Main pipe
O u d t o r o m o d l e 2
ø15.88
Low pressure
ø19.05
ø22.2
ø25.4
ø28.58
ø34.93
ø41.28
ø9.52
High pressure
ø12.7
ø15.88
ø19.05
(2) Indoor pipe
n I d o r o m o d l e
Liquid
ø6.35
ø9.52
ø12.7
ø19.05
Gas ø12.7
ø15.88
ø19.05
ø22.2
ø25.4
ø28.58
n I d o r o m o d l e
Liquid
ø6.35
ø9.52
ø12.7
ø19.05
Gas ø12.7
ø15.88
ø19.05
ø22.2
ø25.4
ø28.58
Note
1) The in the table indicates that the existing piping system can be reused if the total amount of refrigerant charge in the existing system is less than the specified amount calculated
by using the following formulas:
0.16 L1+0.11 L2+0.12 L3+0.06
L1 : Total length of ø19.05 high pressure pipe(m)
L2 : Total length of ø15.88 high pressure pipe(m)
L3 : Total length of ø12.7 liquid pipe(m)
L4 : Total length of ø9.52 liquid pipe(m)
L5 : Total length of ø6.35 liquid pipe(m)
0 0 2 5 0 3 0 0
1 5 2 0 2 5 3 2
1 4 0 2 0 0 2 5 0
(25m or shorter) (15m or shorter)
L4+0.024 <20
SYSTEM DESIGN
Standard
Usable (Unit performance will be affected.)
Usable (Vertical separation between OU and IU to be 20 m or less)
Usable (Piping length limitation will apply.)
Usable (Refrigerant charge amount limit will apply.)
Not use
4 0 5 0 6 3 7 1
(30m or shorter) (20m or shorter)
8 0 1 0 0 1 2 5
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