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Mitsubishi Electric PLA-RP-BA Technical Data Manual Page 88

Mitsubishi electric split-type, heat pump air conditioners.
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(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
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
5
25
30
35
40
45
50
Corrected pipe length [m]
Heating RP200([22.2), RP250([25.4)
20
25
30
35
40
Corrected pipe length [m]
Heating RP200([19.05), RP250([22.2)
Cooling RP250([22.2)
Cooling RP200([19.05)
10
15
Corrected pipe length [m]
55
60
65
70
75
80
85
Cooling RP250([25.4)
Cooling RP200([22.2)
45
50
55
20
25
88
Cooling
Heating
90
95 100 105 110 115
120
RP200,250
RP200
RP250
125

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