Mitsubishi Electric PUHY-RP-Y(S)JM-B, Data Book

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271
3. Piping Design
SYSTEM DESIGN
3. Piping Design
3-1. Piping Design
3-1-1. IF 16 ports or less are in use, I.e., if only one BC controller is in use with no sub BC controller
Table
3-1-1-1
. Piping length limitation Table3-1-1-2. Bent equivalent length "M"
Item Piping in the figure Max. length Max. equivalent length Outdoor Model M (m/bent)
Total piping length A+B+a+b+c+d 220 *1 PUHY-RP200YJM-B 0.35
Farthest IU from OU A+B+d 100 (90) *2 125 (115) PUHY-RP250YJM-B 0.42
Distance between OU and BC A 70 (60) *2 PUHY-RP300YJM-B 0.42
Farthest IU from BC controller B+d 30
Heignt between OU and IU (OU above IU) H 50
Heignt between OU and IU (OU under IU) H' 40
Height between IU and BC h1 15 (10) *3
15 (10) *3
Height between IU and IU h2
Table3-1-1-3. Piping "A"size selection rule (mm [in.])
(m)
Outdoor Model Pipe(High pressure) Pipe(Low pressure)
RP200YJM ø19.05 [3/4"] ø28.58 [1-1/8"] *4
RP250YJM ø19.05 [3/4"] ø28.58 [1-1/8"]
RP300YJM ø19.05 [3/4"] ø28.58 [1-1/8"]
Table3-1-1-4. Piping "B" size seleciton rule (mm [in.])
Total down-stream Indoor capacity Pipe(Liquid) Pipe(Gas)
P80 or less ø9.52 [3/8"] ø15.88 [5/8"]
P81 or more ø12.7 [1/2"] ø19.05 [3/4"]
Table3-1-1-5. Piping "a", "b", "c", "d" size selection rule (mm [in.])
Indoor Unit size Pipe(Liquid) Pipe(Gas)
P15 to P40, GUF-50RD(H) ø6.35 [1/4"] ø12.70 [1/2"]
P50 to P80, GUF-100RD(H) ø9.52 [3/8"] ø15.88 [5/8"]
P200 ø12.7 [1/2"] ø25.4 [1"] or
ø28.58 [1-1/8"]
ø9.52 [3/8"] ø19.05 [3/4"]
P250 ø12.7 [1/2"] ø28.58 [1-1/8"]
P100 to P140
Note1. No Header usable on PURY system.
Note2. Indoor unit sized P100-P250 should be connected to BC controller via Y shape joint CMY-R160-J1 ;
Note3. Indoor unit sized P100-P250 does NOT share BC controller ports with other Indoor units ;
Note4. 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.
Note5. Set DIP-SW 4-6 to ON of BC controller, in case of connected Indoor unit sized P100-P140 with 2 ports.
Note6. It is also possible to connect Indoor unit sized P100-P140 with 1 port (set DIP-SW 4-6 to OFF).
Note7. Individual indoor units grouped together to connect to the BC controller via one port cannot operate
individually in heating and cooling modes at the same time. I.e., they must all function in either heating
However, the cooling capacity decreases a little (For details, refer to the chapter OUTDOOR UNITS,
R2 SERIES, 6-4. Correction by port counts of the BC controller).
or cooling together.
Note8. Indoor capactiy is described as its model size. For example, PEFY-P63VML-E, its capacity is P63.
Note9. Total down-stream Indoor capacity is the summary of the model size of Indoors down-stream.
For example, PEFY-P63VML-E + PEFY-P32VML-E : Total Indoor capacity = P63 + P32 = P95.
OU : Outdoor Unit ; IU : Indoor Unit
(P100-250)
BC controller
a
b
H H'
h1
IU
(P15-P80)
Joint
(CMY-R160-J1)
IU
Joint
Max.3 sets for 1 port.
Total capacity <= P80
B
c
d
IU
A
OU
Reducer (P15~P50)
(attached with BC controller)
IU
h2
For outodoor units equal to or larger than a size P400, on
the BC controller please ensure CMB-P
•
V-GA1 is used.
S
T
M
N
CMY-R160-J1
(
Gas
side)
IU
CMY-R160-J1
(
Liquid
side)
BC controller
Fig. 3-1-1AA
Fig. 3-1-1A Piping scheme
(T)ø19.05ID
(N)ø9.52ID
(M)ø3/8"(Brazing)
(M)ø3/8"(Brazing)
(S)ø5/8"(Brazing)
(S)ø5/8"(Brazing)
226
226
Joint CMY-R160-J1 Gas side
Joint CMY-R160-J1 Liquid side
* 1 Do not exceed the amount of refrigerant to be charged written below.
PURY-RP200-300YJM-B : 0.16 × L
1
+ 0.11 × L
2
+ 0.12 × L
3
+ 0.06 × L
4
+ 0.024 × L
5
< 20
L
1
: Total length of ø19.05 high pressure pipe (m)
L
2
: Total length of ø15.88 high pressure pipe (m)
L
3
: Total length of ø12.7 liquid pipe (m)
L
4
: Total length of ø9.52 liquid pipe (m)
L
5
: Total length of ø6.35 liquid pipe (m)
* 2 The value in ( ) in the table is applied when indoor total capacity exceeds 130% of
outdoor unit capacity.
* 3 Distance of indoor unit size P200, P250 from BC must be less than 10 m, if any.
* 4 ø25.4 for R22