Mitsubishi Electric PQHRY-P250YHM-A, Справочник данных

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(15)-5 PQHY-P250/P250+P250YHM (Connection with PFD indoor unit)
Note1.
As bents cause pressure loss on transportation of refrigerant, fewer bents design is better;
Piping length needs to consider the actual length and equivalent length which bents are counted.
Equivalent piping length (m)=Actual piping "M" x Quantity of bent.
IU : Indoor unit , HU : Heat source unit
L
A
H (HU abo
v
e IU)
H' (HU under IU)
Table : 15-5-2. Bent equivalent length "M"
M (m/bent) Model
Model
Table : 15-5-1. Piping length
(m)
Max. length Piping in the figure Item Max. equivalent length
A
Height between HU and IU (HU above IU)
Height between HU and IU (HU under IU)
IU: Indoor Unit, HU: Heat source Unit
190 165 Farthest IU from HU (L)
H
H' 50
40 -
-
(mm)
Pipe(Gas) Pipe(Liquid)
P250 ø22.20 ø9.52 *1
*1. A>=90m , ø12.70mm
Table : 15-5-3. Piping "A" size selection rule
(mm)
Indoor Unit size Pipe(Gas) Pipe(Liquid)
P250 ø22.20 ø9.52
P500 ø22.20 ø9.52
Table : 15-5-4. Indoor unit piping size selection rule
P250 0.42
Fig.15-5A : Connection with PFD-P250VM-E
IU
HU
L
L
A
IU
Fig.15-5AA : Connection with PFD-P500VM-E (two refrigerant circuit system)
H (HU ab
o
v
e IU)
H' (HU under IU)
HU HU