Mitsubishi Electric BDT CITY MULTI, Installation And Pre-Commissioning Booklet

Page: 14 / 68

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
Table 3-2-1-1 . Piping length limitation Table3-2-1-2. Bent equivalent length "M"
Item Piping in the figure Max. length Max. equivalent length Outdoor Model M (m/bent [ft./bent])
Total piping length A+B+a+b+c+d *1 - P200YLM 0.35 [1.15']
Farthest IU from OU A+B+d 165 [541'] 190 [623'] P250YLM 0.42 [1.38']
Distance between OU and BC A 110 [360'] *1 110 [360'] *1 P300YLM
P350YLM 0.42 [1.38']
Farthest IU from BC controller B+d 40 [131'] *2*3 40 [131'] *3 0.47 [1.54']
Heignt between OU and IU (OU above IU) H 50 [164'] *5 -
Heignt between OU and IU (OU under IU) H' 40 [131'] *6 -
Height between IU and BC h1 15 [49'] (10 [32']) *4 -
Height between IU and IU h2 15 [49'] (10 [32']) *4 -
Fig. 3-2-1-1 Piping length and height between IU and BC controller
Table3-2-1-3. Piping "A"size selection rule (mm [in.])
(m [ft.])
Outdoor Model Pipe(High pressure) Pipe(Low pressure)
P200YLM
ø15.88 [5/8"] ø19.05 [3/4"]
P250YLM ø19.05 [3/4"] ø22.20 [7/8"]
P300YLM
P350YLM
ø19.05 [3/4"] ø22.20 [7/8"]
ø19.05 [3/4"] ø28.58 [1-1/8"]
Table3-2-1-4. Piping "B" size seleciton rule (mm [in.])
Total down-stream Indoor capacity Pipe(Liquid) Pipe(Gas)
P140 or less ø9.52 [3/8"] ø15.88 [5/8"]
Table3-2-1-5. Piping "a", "b", "c", "d" size selection rule (mm [in.])
Indoor Unit size Pipe(Liquid) Pipe(Gas)
P15 to P50, GUF-50RD(H) ø6.35 [1/4"] ø12.70 [1/2"]
P63 to P140, GUF-100RD(H) ø9.52 [3/8"] ø15.88 [5/8"]
]" 4 / 3 [ 5 0 . 9 1 ø ]" 8 / 3 [ 2 5 . 9 ø 0 0 2 P
]" 8 / 7 [ 0 2 . 2 2 ø ]" 8 / 3 [ 2 5 . 9 ø 0 5 2 P
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 "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).
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-P63VMA-E, its capacity is P63.
Note9. Total down-stream Indoor capacity is the summary of the model size of Indoors down-stream.
Note10. To enable the continuous heating mode, set SW4 (848) to ON.
For example, PEFY-P63VMA-E + PEFY-P32VMA-E : Total Indoor capacity = P63 + P32 = P95.
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.
0
10
20
30
40
50
60
70
0 5 10 15
Height difference between the main BC controller
and indoor unit (m)
Pipe
length
between
the
main
B
C
controller
and
indoor
unit
(m
)
(P100-250)
BC controller
a
b
H H'
h1
IU
(P15-P80)
Joint
(CMY-R160-J1)
IU
Joint
(CMY-Y102SS-G2)
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. 3-2-1AA
Fig. 3-2-1A 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