Mitsubishi Electric PQRY-P120TLMU-A, Руководство пользователя

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PQRY-P-T(S)LMU, Y(S)LMU (April 2017 Ver2)
WR2-139
© 2017 Mitsubishi Electric US, Inc.
12. PIPING DESIGN
12-1. R410A Piping Material
12-2. Piping Design
The maximum operation pressure of R410A air conditioner is 4.15 MPa [601 psi]. The refrigerant piping should ensure the safety
under the maximum operation pressure. You shall follow the loca and/or regulations is applicable at a higher priority.
12-2-1. IF 16 ports or less are in use, I.e., if only one BC controller is in use with no sub BC controller.
Table
12-2-1-1
. Piping length limitation Table11-2-1-2. Bends equivalent length "M"
Item Piping in the figure Max. length Max. equivalent length Heat source Model M (m/bends [ft./bends])
Total piping length
A+B+C+D+E+a+b+c+d+e+f+g+h *1
-
Farthest IU from HU A+D+E+h 165 [541']
190 [623']
P144TLMU,YLMU 0.50 [1.64']
Distance between HU and BC A 110 [360'] *1
110 [360'] *1
P168TLMU,YLMU 0.50 [1.64']
Farthest IU from BC controller D+E+h 40 [131'] *2
40 [131'] *2
Height between HU and IU (HU above IU) H 50 [164'] -
Height between HU and IU (HU under IU) H'
40 [131'] -
Height between IU and BC h1
15 [49'] (10 [32']) *3
-
Height between IU and IU h2 15 [49'] (10 [32']) *3 -
Table12-2-1-3. Piping "A"size selection rule (mm [in.])
(m [ft.])
Heat source Model Pipe(High pressure) Pipe(Low pressure)
P72TLMU,YLMU ø15.88 [5/8"] ø19.05 [3/4"]
P216TLMU,YLMU ø22.20 [7/8"] *4 ø28.58 [1-1/8"]
P240TLMU,YLMU ø22.20 [7/8"] *4 ø34.93 [1-3/8"]
Table12-2-1-4. Piping "B", "C", "D", "E" size seleciton rule(mm [in.])
Total down-stream Indoor capacity Pipe(Liquid) Pipe(Gas)
P54 or less ø9.52 [3/8"] ø15.88 [5/8"]
Table12-2-1-5. Piping "a", "b", "c", "d", "e", "f", "g", "h" size selection rule (mm [in.])
Indoor Unit size Pipe(Liquid) Pipe(Gas)
P06 to P18 ø6.35 [1/4"] ø12.70 [1/2"]
P24 to P54 ø9.52 [3/8"] ø15.88 [5/8"]
P72 ø9.52 [3/8"] ø19.05 [3/4"]
P96 ø9.52 [3/8"] ø22.20 [7/8"]
P192TLMU,YLMU 0.50 [1.64']
P216TLMU,YLMU 0.50 [1.64']
P72TLMU,YLMU
0.35 [1.15']
P96TLMU,YLMU
0.42 [1.38']
P120TLMU,YLMU 0.47 [1.54']
P240TLMU,YLMU 0.50 [1.64']
P96-120TLMU,YLMU ø19.05 [3/4"] ø22.20 [7/8"]
P144-192TLMU,YLMU ø22.20 [7/8"] ø28.58 [1-1/8"]
HU: Heat source Unit ; IU: Indoor Unit ; BC: BC controller
*1. Please refer to Fig.3-2-4
*2. Farthest Indoor from BC controller "D+E+h" can exceed 40 m [131 ft.] till 60 m [197 ft.] if no Indoor sized P72, P96 connected. Details refer to Fig.12-2-1-2
*3. Distance of Indoor sized P72, P96 from BC must be less than 10 m [32 ft.], if any.
HU
Fig. 12-2-1-1 Piping scheme
Note1. PQRY systems do not require headers.
Note2. Indoor units sized P72-P96 should be connected to a BC controller using the Y-shaped
CMY-R160-J1 joint adapter. These indoor units cannot use the same BC controller ports
as other units. (They must use their own individual BC controller port.)
Note3. As bends cause pressure loss on transportation of refrigerant, the fewer bends in the system,
the better it is. Piping length needs to factor in the actual length and equivalent length in
which the bends are counted.
Note4. Indoor units connected to the BC controller sharing one port cannot operate separately in
heating and cooling modes simultaneously; i.e., they must function in either heating or cooling in tandem.
Note5. Indoor unit capacities are included in the model name. For example, PEFY-P24NMSU-E has a capacity
of 24,000 BTUs.
Note6. Total “downstream indoor capacity” is the total of all the indoor units connected downstream. For example,
PEFY-P24NMSU-E + PEFY-P12NMSU-E: Total Indoor Unit Capacity = P24 + P12 = P36.
Fig. 12-2-1-2 Piping length and height between IU and BC controller
Height difference between the main BC controller
and farthest indoor unit (m)
Pi
pe length between the main BC controller and indoor unit (m
)
Height difference between the main BC controller
and farthest indoor unit (ft)
Pi
pe 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
*4. When the piping length is 65 m or longer, use the ø28.58
[1-1/8] pipe for the part that exceeds 65 m.
H H'
h1
A
h2
h
g f e
d c
IU IU IU
IU
IU IU
BC controller
Max. 3 sets for 1 port.
Total capacity < = P54
(P06-P54)
(P72-P96)
CMY-R160-J1 (joint)
Not possible to remove
Max. 3 sets for 1 port.
P54 < Total capacity < = P96
IU (each) max < = P54
Refer to the
installation manual
for the connection
B C
D
IU
E
a b
CMY-R160-J1 (joint)
Not possible to remove
IU
P55-P72 ø9.52 [3/8"] ø19.05 [3/4"]
P73-P96 ø9.52 [3/8"] ø22.20 [7/8"]