Pqhy-P250/P250+P250Yhm (Connection With Pfd Indoor Unit) - Mitsubishi Electric PQHY-P200YHM-A Data Book

(15)-5 PQHY-P250/P250+P250YHM (Connection with PFD indoor unit)

HU
L
A
Fig.15-5A : Connection with PFD-P250VM-E
Table : 15-5-1. Piping length
Item
Farthest IU from HU (L)
Height between HU and IU (HU above IU)
Height between HU and IU (HU under IU)
IU: Indoor Unit, HU: Heat source Unit
Table : 15-5-2. Bent equivalent length "M"
Model
P250
Table : 15-5-3. Piping "A" size selection rule
Model
P250
*1. A>=90m , ø12.70mm
Table : 15-5-4. Indoor unit piping size selection rule
Indoor Unit size
P250
P500
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 length+"M" x Quantity of bent.
IU
Fig.15-5AA : Connection with PFD-P500VM-E (two refrigerant circuit system)
Piping in the figure
A
H
H'
M (m/bent)
0.42
Pipe(Liquid)
ø9.52 *1
Pipe(Liquid)
ø9.52
ø9.52
HU HU
A
L
L
IU : Indoor unit , HU : Heat source unit
Max. length Max. equivalent length
165 190
50 -
40 -
(mm)
Pipe(Gas)
ø22.20
(mm)
Pipe(Gas)
ø22.20
ø22.20
- 61 -
IU
(m)