MEES21K108
PU
H
Y-H
P-T
(S
)N
U
-A
, Y
(S
)N
U
-A
99
12. PIPING DESIGN
Hyper Heating Inverter Y-Series
12-2-2. PUHY-HP144-240TSNU/YSNU Piping
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.
*The total capacity of the units in the downstream of the branch joint on at least one of
the piping lines that are connected to the branch joint should be 240 or below.
If the total capacity of the units in the downstream of the branch joints on both lines is
above 240 use two branch joints (CMY-Y302S-G2).
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
Table4-1. Selection criteria for joints
Table4-2.
* CM Y-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;
* CM Y-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.
Outdoor Twinning Kit
CMY-Y100CBK3
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.
H (OU above IU)
h1
H' (OU under IU)
h2
1st joint
Joint
b
a
L2
L1
IU
IU
IU
IU
g
IU
e
IU
d
C
D
IU
f
E
T
S
A
B
Header
Capped
IU: Indoor unit , OU: Outdoor unit
Fig. 12-2-1B Piping scheme
c
2m
To indoor unit
To indoor unit
To indoor unit
To indoor unit
2 m max
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
Piping length (m [ft.])
Item
Piping in the figure
Max. length Max. equivalent length
Total piping length
S+T+A+B+C+D+E+a+b+c+d+e+f+g 1000 [3280]
-
Distance between OU and OU
S+T
10[32]
-
Height between OU and OU
h2
0.1[0.3]
-
Farthest IU from OU (L1)
S(T)+A+C+D+E+g / S(T)+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 40m [131ft], use one size larger liquid pipe starting with the section of piping where 40m [131ft]
is exceeded and all piping after that point.
In the figure above, if the piping labeled “E” exceeds 40m [131ft] (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 g by one size.
Table1. Piping "A" size selection rule
(mm [in.])
Outdoor unit
Twinning kit
Pipe(Liquid)
Pipe(Gas)
PUHY-HP192-240TSNU/YSNU
CMY-Y100CBK3
ø15.88[5/8] ø28.58[1-1/8]
PUHY-HP144TSNU/YSNU
CMY-Y100CBK3
ø12.7[1/2]
ø28.58[1-1/8]
For Piping size "S","T", please refer to specification of the Twinning kit CMY-Y100CBK3 at the Outdoor unit's
external drawing.
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)
ø6.35 [1/4]
ø12.70 [1/2]
ø9.52 [3/8]
ø15.88 [5/8]
ø9.52 [3/8]
ø19.05 [3/4]
ø9.52 [3/8]
ø22.20 [7/8]
Bends equivalent length "M"
Outdoor Model
M (m/bent [ft./bent])
PUHY-HP144T/YSNU
0.50 [1.64]
PUHY-HP192T/YSNU
0.50 [1.64]
PUHY-HP240T/YSNU
0.50 [1.64]
P04 ~ P18
P24 ~ P54
P72
P96
Outdoor unit model
Joint model
HP144 to HP240
CMY-Y202S-G2
See the table below for the first joint of
the outdoor unit described below.
0000006537.BOOK 99 ページ ２０２２年４月１４日 木曜日 午前１０時４１分
