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2010 Hyper-heating Y-SERIES SYSTEM DESIGN (Sept. 2010)
H2iSD-23
2010 H2i
®
Y-SERIES
SYSTEM DESIGN
3. PIPING DESIGN
3-2. Piping Design
Table3-2-1-6. R410A Joint selection rule
Total down-stream Indoor capacity Joint
~ P72 CMY-Y102S-G2
P73 ~ P144 CMY-Y102L-G2
P145 ~ P234 CMY-Y202-G2
P235 ~ CMY-Y302-G2
*Concerning detailed usage of Joint parts, refer to its Installation Manual.
Table3-2-1-7. R410A Header selection rule
4-branch Header 8-branch Header 10-branch Header
CMY-Y104-G CMY-Y108-G CMY-Y1010-G
Total down-stream Indoor capacity
<=P72 <=P144 <=P234
* CMY-Y104-G can directly connect PUHY-HP72TJMU, but can NOT directly connect PUHY-HP96TJMU or above;
* CMY-Y108-G can directly connect PUHY-HP72-144T(S)JMU, but can NOT directly connect PUHY-HP192TSJMU
* CMY-Y1010-G can directly connect PUHY-HP72-192T(S)JMU;
* CMY-Y104-G can NOT connect P72, P96 Indoor, but CMY-Y108, Y1010-G can do;
* Concerning detailed usage of Header parts, refer to its Installation Manual.
H
h
H'
The first joint
Joint
b ca
L2
L1
IU
IU IUIU
d
IU
IU
f
IU
e
C
D
A
OU
B
Header
Note1. No Joint after Header; Piping direct to Indoor Unit from Header;
Note2. If the A/C system is designed to use Cooling-mode under Outside temperature 10°C [50°F], H'<=40m [131ft.];
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 = Actual piping length + "M" x Quantity of bent.
IU : Indoor unit , OU : Outdoor unit
g
Fig. 3-2-1A Piping scheme
3-2-1. PUHY-HP-72, 96TJMU Piping
Table3-2-1-1. Piping length (m [ft.])
Item Piping in the figure Max. length
Max. equivalent length
Total piping length A+B+C+D+a+b+c+d+e+f+g 300 [984'] -
Farthest IU from OU (L1) A+C+D+g / A+B+d 150 [492'] 175 [574']
Farthest IU from first Joint (L2) C+D+g / B+d 40 [131'] 40 [131']
Height between OU and IU (OU above IU)
H 50 [164'] -
Height between OU and IU (OU under IU)
H' 40 [131'] -
Height between IU and IU h 15 [49'] -
OU: Outdoor Unit, IU: Indoor Unit
Table3-2-1-3. Piping "A" size selection rule (mm [in.])
Outdoor and the first Joint Pipe(Liquid) Pipe(Gas)
PUHY-HP72TJMU=CMY-Y102S-G2 ø12.70 [1/2"] ø19.05 [3/4"]
PUHY-HP96TJMU=CMY-Y102L-G2 ø12.70 [1/2"] ø22.20 [7/8"]
Table3-2-1-4. Piping "B","C","D"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 ~ P234 ø15.88 [5/8"] ø28.58 [1-1/8"]
Table3-2-1-5.
Piping "a","b","c","d","e","f","g"size selection rule (mm [in.])
Indoor Unit size Pipe(Liquid) Pipe(Gas)
P06,P08,P12,P15,P18 ø6.35 [1/4"] ø12.70 [1/2"]
P24,P27,P30,P36,P48,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"]
Table3-2-1-2.
Bent equivalent length "M"
Outdoor Model M (m/
bends
[ft./
bends
])
PUHY-HP72TJMU 0.30 [0.99]
PUHY-HP96TJMU 0.35 [1.15]
Note4. Indoor capacity is described as its model size;
For example, PEFY-P08NMAU-E, its capacity is P06;
Note5. Total down-stream Indoor capacity is the summary of the model size of Indoors downstream.
For example, PEFY-P06NMAU-E+PEFY-P08NMAU-E: Total Indoor capacity=P06+P08=P14
Note6. Piping sized 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