Mitsubishi Electric PLA-RP-BA3 Technical Data Book page 71

(3) Capacity correction
Cooling and heating capacity is lowered according to the piping length. Capacity can be obtained by referring
to the following capacity curves.
When the diameter of the gas pipe is smaller than the standard size, cooling capacity is lowered comparing to
the operation using the standard diameter pipe.
The lowered capacity can be obtained by referring to the capacity curves for gas pipe which is 1 or 2 size
smaller than standard size.
Corrected pipe length (m) = actual pipe length (m) + number of bends o 0.3 (m)
1. Capacity curves 1 <Standard size>
100
95
90
85
80
75
70
5 10 15 20
2. Capacity curves 2 <When the gas pipe's diameter is 1-size-smaller than the standard size>
100
95
90
85
80
75
70
7.5 10 15
3. Capacity curves 3 <When the gas pipe's diameter is 2-size-smaller than the standard size>
100
95
90
85
80
75
70
7.5 10
25 30 35 40 45 50 55
Corrected pipe length [m]
20 25 30 35
Corrected pipe length [m]
15 20
Corrected pipe length [m]
60 65 70 75 80 85 90
Cooling
Heating
RP200, 250( 22.2)
RP200( 22.2)
RP250( 22.2)
40 45 50 55
Cooling
Heating
RP200, 250( 19.05)
RP200( 19.05)
RP250( 19.05)
25
71
Cooling
Heating
RP200,250
95 100 105 110 115 120 125
w RP250
Use 1/2H or H pipes if the diameter
is 19.05.
RP200
RP250