Mitsubishi Electric CITY MULTI PUHY-M200-300YNW-A1 Data Book page 68

12. PIPING DESIGN
Table 1 Piping "A" size selection rule
Outdoor unit
PUHY-(E)M200YNW-A1
PUHY-(E)M250YNW-A1
PUHY-(E)M300YNW-A1
Table 2 Piping"B","C","D","E"size selection rule
Total down-stream Indoor capacity
~ M140
M141 ~ M200
M201 ~ M300
M301 ~ M390
Table 3 Piping "a","b","c","d","e","f","g" size selection rule
Indoor Unit size
M10,M15,M20,M25,M32,M40,M50
M63,M71,M80,M100,M125,M140
MEES19K116
(mm [in.])
Pipe(Liquid) Pipe(Gas)
ø9.52 [3/8"] ø22.20 [7/8"]
ø9.52 [3/8"] ø22.20 [7/8"]
ø9.52 [3/8"] ø22.20 [7/8"]
(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"]
(mm [in.])
Pipe(Liquid) Pipe(Gas)
ø6.35 [1/4"] ø12.70 [1/2"]
ø9.52 [3/8"] ø15.88 [5/8"]
Table 4-1 Selection criteria for joints
Total down-stream Indoor capacity
~ M200
M201 ~ M400
*Concerning detailed usage of Joint parts, refer to its Installation Manual.
Table 4-2
See the table below for the first joint of
the outdoor unit described below.
Outdoor unit model Joint model
(E)M200 to (E)M300 CMY-Y102LS-G2
Table 5 Header selection rule
4-branch Header 8-branch Header 10-branch Header
CMY-Y104-G
Total down-stream Indoor capacity <=M200
* CMY-Y104-G can directly connect PUHY-(E)M200YNW-A1, but can NOT directly connect
PUHY-(E)M250YNW-A1 or above;
* CMY-Y108-G can directly connect PUHY-(E)M200-300YNW-A1 or above;
* CMY-Y1010-G can directly connect PUHY-(E)M200-300YNW-A1;
* Concerning detailed usage of Header parts, refer to its Installation Manual.
Note3. Indoor capacity is described as its model size;
For example, PEFY-M32VMA-E2, its capacity is M32;
Note4. Total down-stream Indoor capacity is the summary of the model size of Indoors downstream.
For example, PEFY-M25VMA-E2+PEFY-M32VMA-E2: Total Indoor capacity=M25+M32=M57
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
Y-Series
Joint
CMY-Y102SS-G2
CMY-Y102LS-G2
CMY-Y108-G CMY-Y1010-G
<=M400 <=M650
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