Mitsubishi Electric PUHY-P250YHM-A, Data Book

Page: 84 / 101

82
1-2-2. PUHY-P500, 750 Piping
Outdoor Twinning Kit
CMY-Y100,200VBK2
Note1. "-"
Note2.
If the A/C system is designed to use cooling mode under outdoor temperature 0˚C, H’<=15m.
Note3. 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.
H (OU abo
v
e IU)
H' (OU under IU)
h2
T
A
L1
S
IU : Indoor unit , OU : Outdoor unit
Fig. 1-2-1B Piping scheme
2m
To indoor unit To indoor unit
To indoor unit 2m To indoor unit
Trap (gas
pipe only)
Upward
incline Downward
incline
Install the pipes from the outdoor unit to the branch
joint with a downward incline. If the length of pipe between the branch joint and outdoor
unit exceeds 2 m, provide at rap at a distance 2 m or less
from the branch joint.
OK NG
OU
OU
IU
max
Table1-2-2-2. Bent equivalent length "M"
M (m/bent [ft./bent]) Outdoor Model
PUHY-P500 0.50 [1.64]
PUHY-P750 0.70 [2.29]
Table1-2-2-1. Piping length (m [ft.])
Max. length Piping in the figure Item Max. equivalent length
A
Height between OU and IU (OU above IU)
Height between OU and IU (OU above IU)
OU: Outdoor Unit, IU: Indoor Unit
190 [623'] 165 [541'] Farthest IU from OU (L1)
h2 - 0.1[0.3'] Height between OU and OU
S+T - 10[32'] Distance between OU and OU
H
H' 50 [164']
40 [131'] -
-
(mm [in.])
Outdoor Pipe(Gas) Pipe(Liquid)
CMY-Y100VBK2 ø28.58[1-1/8"] ø15.88[5/8"]
CMY-Y200VBK2 ø34.93[1-3/8"] ø19.05[3/4"]
CMY-Y100VBK2; PUHY-P500
CMY-Y200VBK2; PUHY-P750
Table1-2-2-3. Piping "A" size selection rule
(mm [in.])
Indoor Unit size Pipe(Gas) Pipe(Liquid)
P500, P600-F * ø28.58 [1-1/8"] ø15.88 [5/8"]
P750, P900-F * ø34.93 [1-3/8"] ø19.05 [3/4"]
* "-F" indicates Fresh air intake type
Table1-2-2-4. Indoor unit piping size selection rule