MEES21K108
PU
H
Y-
H
P-
T(
S)
N
U
-A
, Y
(S
)N
U
-A
98
12. PIPING DESIGN
Hyper Heating Inverter Y-Series
12-2-1. PUHY-HP72-120TNU/YNU Piping
Table4-1. Selection criteria for joints
Table4-2.
Total down-stream Indoor capacity
Joint
~
P72
CMY-Y102SS-G2
P73 ~
P144
CMY-Y102LS-G2
P145 ~
P240
CMY-Y202S-G2
P241 ~
CMY-Y302S-G2
*Concerning detailed usage of joint parts, refer to its Installation Manual.
Table5. Header selection rule
4-branch Header 8-branch Header 10-branch Header
CMY-Y104C-G
CMY-Y108C-G
CMY-Y1010C-G
Total down-stream Indoor capacity <=P72
<=P144
<=P240
Note3.
Indoor capacity is described as its model size;
For example, PEFY-P06NMAU-E3, its capacity is P06;
Note4.
Total down-stream Indoor capacity is the summary of the model size of Indoors downstream.
For example, PEFY-P06NMAU-E3+PEFY-P08NMAU-E3: Total Indoor capacity=P06+P08=P14
Note5.
Piping size determined by the Total down-stream indoor capacity is NOT necessary
to be bigger than the up-stream one.
i.e. A>=B; A>=C>=D
* CMY-Y104C-G can directly connect PUHY-HP72T/YNU, but can NOT directly connect PUHY-HP96T/YNU or above;
* CMY-Y108C-G can directly connect PUHY-HP72~144T/Y(S)NU, but can NOT directly connect PUHY-HP192T/YSNU or above;
* CMY-Y1010C-G can directly connect PUHY-HP72~240T/Y(S)NU;
* CMY-Y104C-G can NOT connect P72~P96 Indoor, but CMY-Y108,Y1010C-G can do;
* Concerning detailed usage of Header parts, refer to its Installation Manual.
Note1. No joint after Header; Piping direct to Indoor Unit from Header;
Note2.
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 , OU : Outdoor unit
Fig. 12-2-1A Piping scheme
L1
L2
C
b
h1
c
d
g
e
A
B
D
a
OU
Joint
H (OU above IU)
H' (OU under IU)
IU
IU
f
E
IU
IU
IU
IU
IU
Header
1st joint
Capped
Piping length
(m [ft.])
Item
Piping in the figure
Max. length
Max. equivalent length
Total piping length
A+B+C+D+E+a+b+c+d+e+f+g 1000 [3280]
-
Farthest IU from OU (L1)
A+C+D+E+g / A+B+c
165 [541]
190 [623]
Farthest IU from the first joint (L2)
C+D+E+g / B+c
40 [131] *3
40 [131]
Height between OU and IU (OU above IU) H
50 [164] *1
-
Height between OU and IU (OU under IU) H'
40 [131] *2
-
Height between IU and IU
h1
15 [49] *4
-
OU: Outdoor Unit, IU: Indoor Unit
*1 90 m [295 ft.] is available depending on the model and installation conditions. For more detailed information, contact your local distributor.
*2 60 m [197 ft.] is available depending on the model and installation conditions. For more detailed information, contact your local distributor.
*3 90 m [295 ft.] is available. When the piping length exceeds 40 m [131 ft.], use one size larger liquid pipe starting with the section of piping where 40 m [131 ft.] is exceeded and all piping after that point.
In the figure above, if the piping labeled “E” exceeds 40 m [131 ft.] (but does not exceed 90 m [295 ft.]), increase the size of the liquid piping labeled E, f, and g by one size.
*4 30 m [98 ft.] is available. If the height difference between indoor units exceeds 15 m [49 ft.] (but does not exceed 30 m [98 ft.]), use one-size larger pipes for indoor unit liquid pipes.
In the figure above, if “h1” exceeds 15 m [49 ft.], increase the size of the liquid piping labeled d, e, f, and g by one size.
Table1. Piping "A" size selection rule
(mm [in.])
Outdoor unit
Pipe(Liquid)
Pipe(Gas)
PUHY-HP72T/YNU
ø9.52 [3/8]
ø22.2 [7/8]
PUHY-HP96T/YNU
ø9.52 [3/8] *1
*2
ø22.2 [7/8]
PUHY-HP120T/YNU
ø9.52 [3/8]
ø28.58 [1-1/8]
*1. L1>=90 m [295 ft.], ø12.70 mm [1/2 in.] ; L1<90m [295ft.], ø9.52mm [3/8in.]
*2. L1>=40 m [131 ft.], ø12.70 mm [1/2 in.] ; L1<40m [131ft.], ø9.52mm [3/8in.]
Table2. Piping"B","C","D","E"size selection rule
(mm [in.])
Total down-stream Indoor capacity
Pipe(Liquid)
Pipe(Gas)
~ P54
ø9.52 [3/8]
ø15.88 [5/8]
P55 ~ P72
ø9.52 [3/8]
ø19.05 [3/4]
P73 ~ P108
ø9.52 [3/8]
ø22.20 [7/8]
P109 ~ P144
ø12.70 [1/2]
ø28.58 [1-1/8]
P145 ~ P240
ø15.88 [5/8]
ø28.58 [1-1/8]
P241 ~ P308
ø19.05 [3/4]
ø34.93 [1-3/8]
P309 ~
ø19.05 [3/4]
ø41.28 [1-5/8]
Table3. Piping "a","b","c","d","e","f","g" size selection rule
(mm [in.])
Indoor Unit size
Pipe(Liquid)
Pipe(Gas)
P04 ~ P18
ø6.35 [1/4]
ø12.70 [1/2]
P24 ~ P54
ø9.52 [3/8]
ø15.88 [5/8]
P72
ø9.52 [3/8]
ø19.05 [3/4]
P96
ø9.52 [3/8]
ø22.20 [7/8]
Bent equivalent length "M"
Outdoor Model
M (m/bent [ft./bent])
PUHY-HP72T/YNU
0.35
[1.15]
PUHY-HP96T/YNU
0.42
[1.38]
PUHY-HP120T/YNU
0.42
[1.38]
Outdoor unit model
Joint model
HP72 to HP120
CMY-Y102LS-G2
See the table below for the first joint of
the outdoor unit described below.
0000006537.BOOK 98 ページ ２０２２年４月１４日 木曜日 午前１０時４１分
