MEES19K187
PQ
HY-P-T
(S)L
MU-A
1, Y(S)L
M
U-A
1, Z(
S)
LMU
-A1
330
1. Piping Design
1-2-2. PQHY-P144-360TSLMU/YSLMU 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.
*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 240
or above 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
* CMY-Y104C-G can directly connect PQHY-P72T/YLMU, but can NOT directly connect PQHY-P96T/YLMU or above;
* CMY-Y108C-G can directly connect PQHY-P72~144T/Y(S)LMU, but can NOT directly connect PQHY-P168T/Y(S)LMU or above;
* CMY-Y1010C-G can directly connect PQHY-P72~240T/Y(S)LMU;
* 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.
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 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
Heat source Twinning Kit
CMY-Y100CBK3
for PQHY-P144-240TSLMU/YSLMU
CMY-Y200CBK2
for PQHY-P288-360TSLMU/YSLMU
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 (HU above IU)
h1
H' (HU 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 , HU: Heat source unit
Fig. 1-2-2A 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 z unit to the branch
joint with a downward incline.
If the length of pipe between the branch joint and heat source
unit exceeds 2 m, provide at rap at a distance 2 m or less
from the branch joint.
OK
NG
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 500 [1640]
-
Distance between HU and HU
S+T
10[32]
-
Height between HU and HU
h2
0.1[0.3]
-
Farthest IU from HU (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] *1
40 [131]
Height between HU and IU (HU above IU) H
50 [164]
-
Height between HU and IU (HU under IU)
H'
40 [131]
-
Height between IU and IU
h1
15 [49]
-
HU: Heat source Unit, IU: Indoor Unit
*1 90 m is available. When the piping length exceeds 40 m, use one size larger liquid pipe starting with the
section of piping where 40 m is exceeded and all piping after that point.
In the figure above, if the piping labeled “E” exceeds 40 m (but does not exceed 90 m), increase the size of the liquid piping labeled E, f, and g by one size.
Table1. Piping "A" size selection rule
(mm [in.])
For Piping size "S","T", please refer to specification of the Twinning kit CMY-Y100CBK3,
CMY-Y200CBK2 at the Heat source 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"
Heat source Model
M (m/bent [ft./bent])
PQHY-P144T/YSLMU
0.50 [1.64]
PQHY-P288T/YSLMU
0.70 [2.29]
PQHY-P312T/YSLMU
0.70 [2.29]
PQHY-P336T/YSLMU
0.80 [2.62]
PQHY-P360T/YSLMU
0.80 [2.62]
PQHY-P168T/YSLMU
0.50 [1.64]
PQHY-P192T/YSLMU
0.50 [1.64]
PQHY-P216T/YSLMU
0.50 [1.64]
PQHY-P240T/YSLMU
0.50 [1.64]
P04,P05,P06,P08,P12,P15,P18
P24,P27,P30,P36,P48,P54
P72
P96
Heat source unit
Pipe(Liquid)
Pipe(Gas)
PQHY-P336-360T/YSLMU
ø19.05 [3/4]
ø41.28 [1-5/8]
PQHY-P288-312T/YSLMU
ø19.05 [3/4]
ø34.93 [1-3/8]
PQHY-P168-240T/YSLMU
ø15.88 [5/8]
ø28.58 [1-1/8]
PQHY-P144T/YSLMU
ø12.70 [1/2]
ø28.58 [1-1/8]
heat source unit model
Joint model
P288 to P360
CMY-Y302S-G2
P144 to P240
CMY-Y202S-G2
See the table below for the first joint of
the heat source unit described below.
HU
HU
0000005756.BOOK 330 ページ ２０２０年２月２８日 金曜日 午後１時２１分
