Mitsubishi Electric PUMY-P36NKMU2-BS Technical & Service Manual page 30

Figure 17 PUMY-P60NKMU2(-BS) <Heating>
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0
(2) Method for Obtaining the Equivalent Piping Length
Equivalent length = (length of piping to farthest indoor unit) + (0.3 o number of bends in the piping) (m)
4-5-1. Correction of Heating Capacity for Frost and Defrosting
If heating capacity has been reduced due to frost formation or defrosting, multiply the capacity by the appropriate correction
factor from the following table to obtain the actual heating capacity.
Correction factor diagram
Outdoor Intake temperature <W.B.°F (°C)>
Correction factor
OCH695B
20 40 60 80 100
43(6) 37(4) 36(2) 32(0) 28(−2) 25(−4) 21(−6) 18(−8) 14(−10) 5(−15) −4(−20) −13(−25)
1.0 0.98 0.89 0.88
Total capacity of indoor unit
120 140 160 180
Piping equivalent length (ft)
0.89 0.9 0.95
30
200 220 240 260
0.95 0.95 0.95 0.95 0.95