Mitsubishi Electric PURY-HP144, Service Handbook

Page: 60 / 398

[2-10 Restrictions on Refrigerant Pipes ]
HWE18220_GB chapter 2 -
31
2 Restrictions
2-10 Restrictions on Refrigerant Pipes
2-10-1 Restrictions on Refrigerant Pipe Length
(1) System that requires 16 BC controller ports or fewer <System with only the main BC controller
or standard BC controller>
Piping length limitation *8 Bent equivalent length
Item Piping in the figure Max. length Max. equivalent length Outdoor Model M (m/bent [ft./bent])
Total piping length (Total length of high pressure and liquid pipes) A+B+C+D+E+a+b+c+d+e+f+g+i *1 - HP72T/YNU 0.35 [1.15']
Farthest IU from OU A+D+E+i
165 [541'] 190 [623']
HP96T/YNU 0.42 [1.38']
Distance between OU and BC A 110 [360'] *1 110 [360'] *1 HP120T/YNU
Farthest IU from BC controller D+E+i
60 [197'] *2*3 60 [197'] *2*3
0.50 [1.64']
Height between OU and IU (OU above IU) H 50 [164'] *6 -
Height between OU and IU (OU under IU) H' 40 [131'] *7 -
Height between IU and BC h1
15 [49'] (10 [32']) *4
-
Height between IU and IU h2 30 [98'] (20 [65']) *5 -
(m [ft.])
Note1. No Header usable on PURY system.
Note2. Indoor unit sized P72-P96 should be connected to BC controller via Y shape joint CMY-R160-J1.
Note3. Indoor unit sized P72-P96 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 Number of bent.
Note5. Set DIP-SW 4-6 to ON of BC controller, in case of connected Indoor unit sized P72-P96 with 2 ports.
Note6. Do not connect multiple indoor units to the same port when operating each of them in different mode (cooling,
heating, stop, and thermo-off). The indoor units connected to the same port must be set to operate in the same
mode. Set them in the same group to make them run/stop in the same mode all together. For other options,
enable the thermo setting on the remote controller, or set the common thermostat (optional) to run/stop the units
in the same mode based on a representative temperature.
Note7. Indoor capactiy is described as its model size. For example, PEFY-P24NMAU-E3, its capacity is P24.
Note8. Total down-stream Indoor capacity is the summary of the model size of Indoors down-stream. For example,
PEFY-P24NMAU-E3 + PEFY-P06NMAU-E3: Total Indoor capacity = P24 + P06 = P30.
Note9. To connect the BC controller to the main pipe, use the reducer (CMY-R301S-G, CMY-R302S-G1, or CMY-R304S-G1).
Note10. Install the pipes correctly referring to the section titled "Outdoor Twinning Kit."
OU: Outdoor Unit; IU: Indoor Unit; BC: BC controller
*1. Refer to the pages 36, 37.
*2. Details refer to Fig. 1.
*3. When the P72 or P96 model of indoor units are connected to the system, the maximum distance from the BC controller to the farthest indoor unit
(indicated as "D + E + i" in the figure is 40 meters.)
*4. Distance of Indoor sized P72, P96 from BC must be less than 10 m, if any.
*5. Distance of Indoor sized P72, P96 from IU must be less than 20 m, if any.
*6. 90 m is available depending on the model and installation conditions. For more detailed information, contact your local distributor.
*7. 60 m is available depending on the model and installation conditions. For more detailed information, contact your local distributor.
*8. Total length of high-pressure pipes and liquid pipes
S
T
M
N
CMY-R160-J1
(
Gas
side)
IU
CMY-R160-J1
( Liquid side)
BC controller
Fig. A
Fig. B Piping scheme
OU: Outdoor unit, IU: Indoor unit
(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
Refer to the
installation manual
for the connection
CMY-R160-J1 (joint)
(joint_A)
CMY-Y102SS-G2
CMY-Y102LS-G2
CMY-R160-J1 (joint)
Pipe (Low pressure)
Pipe (High pressure)
Pipe (Liquid)
Pipe (Gas)
(P05-P54)
(P05-P54)
(P72-P96)
Max. 3 sets for 1 port.
Total capacity < = P54
Max. 3 sets for 2 port.
P54 < Total capacity < = P96
IU (each) max < = P54
BC controller (Main BC)
IU
A
A
a
a
b
b
IU IU
IU
B
B
c
c
IU IU IU
IU
d
d
e
e
f
f
g
g
i
i
C
C
H
D
D
E
E
h1
H'
h2
Fig. 1 Piping length and height between IU and BC controller
Height difference between the main BC controller
and farthest indoor unit (m)
P
ipe length between the main BC
controller and indoor unit (m)
Height difference between the main BC controller
and farthest indoor unit (ft)
P
ipe length between the main BC
controller and indoor unit (ft)
0
10
20
30
40
50
60
70
0 5 10 15
0
50
100
150
200
250
0 5 10 15 20 25 30 35 40 45
OU