Capacity Reduction Ratio Due To Changes In Piping Length - Mitsubishi Electric PUH-P200MYA Technical & Service Manual

[4] Capacity Reduction Ratio due to Changes in Piping Length

(1) Cooling capacity
PUH-P200MYA
1
0.9
0.8
0 10 20 30
Equivalent piping length (m)
(2) Heating capacity
Model name
PUH-P200MYA
PUH-P250MYA
(3) Calculation formula of equivalent piping length
PUH-P200MYA
PUH-P250MYA
(4) Reduction ratio by frosting
Outdoor unit inlet wet bulb temperature
(°CWB)
40 50 60 70
Equivalent piping length
~ 30m 30 ~ 50m
1.0 0.995
Equivalent piping length (m) = Actual piping length (m) + (0.47 × Number of bend)
Equivalent piping length (m) = Actual piping length (m) + (0.5 × Number of bend)
6
4
2
0
-2
-4
-6
-8
-10
PUH-P250MYA
1
0.9
0.8
0 10 20
Equivalent piping length (m)
50 ~70m
0.99
Heating capacity reduction ratio
1.0
0.98
0.88
0.85
0.86
0.89
0.92
0.92
0.92
–16–
30 40 50 60 70