Mitsubishi Electric PWFY-P100VM-E-BU Data Book page 111

(1)-5-3 How to obtain the equivalent piping length
1 PURY-EP200YLM-A(-BS)
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.35 × number of bends in the piping) m
2 PURY-EP250, 300YLM-A(-BS)
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.42 × number of bends in the piping) m
3 PURY-EP350YLM-A(-BS)
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.47 × number of bends in the piping) m
4 PURY-EP400, 450, 500YLM-A(-BS), EP550, 600, 650YSLM-A(-BS)
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.50 × number of bends in the piping) m
5 PURY-EP700YSLM-A(-BS)
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.70 × number of bends in the piping) m
6 PURY-P850, 900YSLM-A(-BS)
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.80 × number of bends in the piping) m
(1)-5-4 Correction by port counts of the BC controller
Indoor unit sizes P200 and P250 must be connected to 2 ports on the BC controller.
Indoor unit sizes from P100 to P140 should normally be connected to 2 ports on the BC controller (set BC controller DIP-SW 4-6
to its ON position).
In cases whereby indoor unit sizes from P100 to P140 are connected to only 1port on the BC controller (set BC controller DIP-SW
4-6 to its OFF position), the cooling capacity of the indoor unit should be multiplied by a correction factor of 0.97.
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