Mitsubishi Electric PLFY-WP VBM-E, Справочник данных

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2. CAPACITY TABLES
2 - 46
WR2
MEE15K052
2-1-3. How to obtain the equivalent piping length
Refrigerant pipe
1. PQRY-P200YLM-A
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.35 × number of bends in the piping) [m]
2. PQRY-P250, 300YLM-A
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.42 × number of bends in the piping) [m]
3. PQRY-P350YLM-A
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.47 × number of bends in the piping) [m]
4. PQRY-P400, 450, 500YLM-A
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.50 × number of bends in the piping) [m]
Water pipe
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.55 × number of bends in the piping) [m]
Water piping design
HBC water pipe connection sizes and pipe sizes.
Indoor unit
Connection size Pipe size
Water inlet Water outlet Water out Water return
PEFY-WP-VMS1
PEFY-WP-VMA
PLFY-WP-VBM
PFFY-WP-VLRMM
Rc 3/4 screw Rc 3/4 screw I.D.20mm I.D.20mm
*1
Water pipework is screw
connections
Up to three units for 1 branch hole;
total capacity: below 80
(but in same mode, cooling/heating)
Note:
*1. Connection of multiple indoor units with one connection (or joint pipe)
• Total capacity of connectable indoor units: Less than 80
• Number of connectable indoor units: Maximum 3 Sets
• Selection of water piping
Select the size according to the total capacity of indoor units to be installed downstream.
• Please group units that operate on 1 branch.
To outdoor/heat source unit
HBC controller
Indoor
unit Indoor
unit Indoor
unit Indoor
unit Indoor
unit Indoor
unit
End connection (brazing)
Twinning pipe (field supply)
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