Mitsubishi Electric BDT CITY MULTI Installation And Pre-Commissioning Booklet page 14

R2 SERIES PIPING LIMITATIONS
3-2. Piping Design
3-2-1. If 16 ports or less are in use, I.e., if only one BC controller is in use with no sub BC controller
PURY-P-YLM
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 bends cause pressure loss on transportation of refrigerant, fewer bends design is better ;
Piping length needs to consider the actual length and equivalent length which bends are counted.
Equivalent piping length (m)=Actual piping length+"M" x Number of bends.
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).
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).
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
or cooling together.
Note8. Indoor capactiy is described as its model size. For example, PEFY-P63VMA-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-P63VMA-E + PEFY-P32VMA-E : Total Indoor capacity = P63 + P32 = P95.
Note10. To enable the continuous heating mode, set SW4 (848) to ON.
OU
H H'
(attached with BC controller)
h1
Fig. 3-2-1A Piping scheme
Table . Piping length limitation
3-2-1-1
Item
Total piping length
Farthest IU from OU
Distance between OU and BC
Farthest IU from BC controller
Heignt between OU and IU (OU above IU) H
Heignt between OU and IU (OU under IU) H'
Height between IU and BC
Height between IU and IU
OU : Outdoor Unit ; IU : Indoor Unit ; BC : BC controller
*1. Refer to the section 3-2-7.
*2. Details refer to Fig.3-2-1-1
*3. Farthest Indoor from BC controller "B+d" can exceed 40m till 60m if no Indoor sized P200, P250 connected. Details refer to Fig.3-2-1-1
*4. Distance of Indoor sized P200, P250 from BC must be less than 10m, if any.
*5. 90m is available depending on the model and installation conditions. For more detailed information, contact your local distributor.
*6. 60m is available depending on the model and installation conditions. For more detailed information, contact your local distributor.
Fig. 3-2-1-1 Piping length and height between IU and BC controller
70
60
50
40
30
20
10
0
0
Height difference between the main BC controller
14
A
BC controller
Reducer (P15~P50)
a Joint
(CMY-R160-J1)
IU
(P15-P80) (P100-250)
Piping in the figure
A+B+a+b+c+d
A+B+d
A
B+d
h1
h2
5 10
and indoor unit (m)
CMY-R160-J1
Gas
(
Fig. 3-2-1AA
For outodoor units equal to or larger than a size P400, on
the BC controller please ensure CMB-P V-GA1 is used.
•
Joint
(CMY-Y102SS-G2)
B
b
c
IU IU
Max.3 sets for 1 port.
Total capacity <= P80
(m [ft.])
Max. length Max. equivalent length
*1 -
165 [541'] 190 [623']
110 [360'] *1 110 [360'] *1
40 [131'] *2*3 40 [131'] *3
50 [164'] *5 -
40 [131'] *6 -
15 [49'] (10 [32']) *4 -
15 [49'] (10 [32']) *4 -
Table3-2-1-3. Piping "A"size selection rule
Outdoor Model Pipe(High pressure)
P200YLM ø15.88 [5/8"]
P250YLM ø19.05 [3/4"]
P300YLM ø19.05 [3/4"]
P350YLM ø19.05 [3/4"]
Table3-2-1-4. Piping "B" size seleciton rule
Total down-stream Indoor capacity Pipe(Liquid)
P140 or less
Table3-2-1-5. Piping "a", "b", "c", "d" size selection rule (mm [in.])
Indoor Unit size
P15 to P50, GUF-50RD(H)
P63 to P140, GUF-100RD(H)
P 2 0 0
15 P 2 5 0
Joint CMY-R160-J1 Liquid side
CMY-R160-J1
Liquid 226
( side)
(M)ø3/8"(Brazing)
M
BC controller
(M)ø3/8"(Brazing)
Joint CMY-R160-J1 Gas side
N
S 226
T
(S)ø5/8"(Brazing)
IU
side)
(S)ø5/8"(Brazing)
IU
d
h2
Table3-2-1-2. Bent equivalent length "M"
Outdoor Model M (m/bent [ft./bent])
P200YLM 0.35 [1.15']
P250YLM 0.42 [1.38']
P300YLM 0.42 [1.38']
P350YLM 0.47 [1.54']
(mm [in.])
Pipe(Low pressure)
ø19.05 [3/4"]
ø22.20 [7/8"]
ø22.20 [7/8"]
ø28.58 [1-1/8"]
(mm [in.])
Pipe(Gas)
ø9.52 [3/8"] ø15.88 [5/8"]
Pipe(Liquid) Pipe(Gas)
ø6.35 [1/4"] ø12.70 [1/2"]
ø9.52 [3/8"] ø15.88 [5/8"]
ø 9 5 . 2 3 [ 8 / ] " ø 1 9 0 . 5 3 [ 4 /
ø 9 5 . 2 3 [ 8 / ] " ø 2 2 2 . 0 7 [ 8 /
(N)ø9.52ID
(T)ø19.05ID
] "
] "