Pqhy-P400-600Yshm Piping; (Connection With Standard City Multi Indoor Units, Pwfy-P100/200Vm-E-Au) - Mitsubishi Electric PQHY-P200YHM-A Data Book

(15)-3 PQHY-P400-600YSHM Piping (Connection with standard CITY MULTI indoor units, PWFY-P100/200VM-E-AU)
HU
HU
h2
T
S
1st Joint
Heat source Twinning Kit
CMY-Y100,VBK2
Fig. 15-3A Piping scheme
Table15-3-1. Piping length
Item
Total piping length
Distance between HU and HU
Height between HU and HU
Farthest IU from HU (L1)
Farthest IU from the first Joint (L2)
Height between HU and IU (HU above IU) H
Height between HU and IU (HU above IU) H'
Height between IU and IU
HU: Heat source Unit, IU: Indoor Unit
Table15-3-3. Piping "A" size selection rule
Heat source and the first Joint
CMY-Y100VBK2=CMY-Y202-G2
For Piping size "S","T", please refer to specification of the Twining kit CMY-Y100VBK2 at the Heat source
unit's external drawing.
Table15-3-4. Piping"B","C","D","E" size selection rule
Total down-stream Indoor capacity
~ P140
P141 ~ P200
P201 ~ P300
P301 ~ P400
P401 ~ P650
P651 ~
Table15-3-5. Piping"a","b","c","d","e","f","g" size selection rule
Indoor Unit size
P20,P25,P32,P40,P50,GUF-50RD(H)
P63,P71,P80,P100,P125,P140,GUF-100RD(H) ø9.52 [3/8"]
P200
P250
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 length+"M" x Quantity of bent.
OK
To indoor unit
Downward
incline
Install the pipes from the heat source unit to the branch
joint with a downward incline.
A
C
D
d
Joint
IU
Piping in the figure
S+T+A+B+C+D+E+a+b+c+d+e+f+g 500 [1640']
S+T
h2
S(T)+A+C+D+E+g / S(T)+A+B+c 165 [541']
C+D+E+g / B+c
h1
(mm [in.])
Pipe(Liquid) Pipe(Gas)
ø12.70[1/2"] ø28.58[1-1/8"]*1
ø15.88[5/8"] ø28.58[1-1/8"]*2
(mm [in.])
Pipe(Liquid) Pipe(Gas)
ø9.52 [3/8"] ø15.88 [5/8"]
ø9.52 [3/8"] ø19.05 [3/4"]
ø9.52 [3/8"] ø22.20 [7/8"]
ø12.70 [1/2"] ø28.58 [1-1/8"]
ø15.88 [5/8"] ø28.58 [1-1/8"]
ø19.05 [3/4"] ø34.93 [1-3/8"]
(mm [in.])
Pipe(Liquid) Pipe(Gas)
ø6.35 [1/4"] ø12.70 [1/2"]
ø15.88 [5/8"]
ø9.52 [3/8"] ø19.05 [3/4"]
ø9.52 [3/8"] ø22.20 [7/8"]
NG
To indoor unit
Upward
incline
Header
B
a b
IU IU
L1
L2
E
e f
IU IU
(m [ft.])
Max. length Max. equivalent length
-
10[32'] -
0.1[0.3'] -
190 [623']
40 [131'] 40 [131']
50 [164'] -
40 [131'] -
15 [49'] -
Table15-3-6. R410A Joint selection rule
Total down-stream Indoor capacity
~ P200
P201 ~ P400
P401 ~ P650
P651 ~
*PQHY-P400-600YSHM's first Joint is always CMY-Y202-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 650 or below.
If the total capacity of the units in the downstream of the branch joints on both lines is 650 or above use
two branch joints (CMY-Y302-G2).
Table15-3-7. R410A Header selection rule
Total down-stream Indoor capacity <=P200
* CMY-Y104-G can directly connect PQHY-P200YHM, but can NOT directly connect PQHY-P250YHM or above;
* CMY-Y108-G can directly connect PQHY-P200-600Y(S)HM, but can NOT directly connect PQHY-P500YSHM or above;
* CMY-Y1010-G can directly connect PUHY-(E)P200-650Y(S)HM;
* CMY-Y104-G can NOT connect P200,P250 Indoor, but CMY-Y108, Y1010-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-P32VMM-E, its capacity is P32;
Note4. Total down-stream Indoor capacity is the summary of the model size of Indoors downstream.
For example, PEFY-P25VMM-E+PEFY-P32VMM-E: Total Indoor capacity=P25+P32=P57
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
- 59 -
Trap (gas
pipe only)
To indoor unit
2m 2 m max
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.
Capped
c
IU
g
IU
IU : Indoor unit , HU : Heat source unit
Table15-3-2. Bent equivalent length "M"
Heat source Model M (m/bent [ft./bent])
PQHY-P400YSHM-A
PQHY-P450YSHM-A
PQHY-P500YSHM-A
PQHY-P550YSHM-A
PQHY-P600YSHM-A
Joint
CMY-Y102S-G2
CMY-Y102L-G2
CMY-Y202-G2
CMY-Y302-G2
4-branch Header 8-branch Header 10-branch Header
CMY-Y104-G CMY-Y108-G
<=P400
To indoor unit
0.50 [1.64]
0.50 [1.64]
0.50 [1.64]
0.50 [1.64]
0.50 [1.64]
CMY-Y1010-G
<=P650