Mitsubishi Electric CITY MULTI PUHY-P-YMF-B, Руководство по установке

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14
ENGLISH
Permissible High/
Low Difference
Permissible
Length
A+B+C+a+b+c+d+e is 220 m or less
A+B+b is 100 m or less
B+b is 30 m or less
50 m or less (If the outdoor unit is lower, 40 m or less)
15 m or less
Select the branch kit, sold separately, from the table below. (Each kit contains a refrigerant and
gas piping set.)
Line branching Header branching
CMY-Y102S-F CMY-Y102L-F CMY-Y202-F CMY-Y104-E CMY-Y107-E CMY-Y1010-E
(1) Refrigerant Piping Diameter In Section
From Outdoor Unit to First Branch (Out-
door Unit Piping Diameter)
Model Piping Diameter (mm)
PUHY-P400
Liquid Line ø15.88
Gas Line ø31.75
PUHY-P500
Liquid Line ø15.88
Gas Line ø38.1
Total of units downstream
less than 160
Total of units downstream
161 to 330
4 branching
header
7 branching
header
10 branching
header
Liquid pipe size
Total length of
ø15.88
×
0.25
(m)
×
0.25 (kg/m)
Liquid pipe size
Total length of
ø12.7
×
0.12
(m)
×
0.12 (kg/m)
Liquid pipe size
Total length of
ø9.52
×
0.06
(m)
×
0.06 (kg/m)
Liquid pipe size
Total length of
ø6.35
×
0.024
(m)
×
0.024 (kg/m)
+ + + +
α
<Example>
Indoor 1 : 125
A : ø15.88 30 m a : ø9.52 10 m
2 : 100 B : ø12.7 10 m b : ø9.52 20 m
3 : 40 C : ø12.7 15 m c : ø6.35 10 m
4 : 32 d : ø6.35 10 m
5 : 32 e : ø6.35 10 m
The total length of each liquid line is as follows:
ø15.88 : A = 30 m
ø12.7
: B + C = 10 + 15 = 25 m
ø9.52 : a + b = 10 + 20 = 30 m
ø6.35 : c + d + e = 10 + 10 + 10 = 30 m
Therefore,
<Calculation example>
Additional
refrigerant charge = 30
×
0.25 + 15
×
0.12 + 30
×
0.06
+ 30
×
0.024 + 2.5 = 14.4 kg
Value of
α
Total capacity of
connecting indoor units
α
to Model 80 1.0 kg
Models 81 to 160 1.5 kg
Models 161 to 330 2.0 kg
Models 331 to 480 2.5 kg
Models 481 or more 3.0 kg
At the conditions
below:
<Additional Charge>
Each
Section of
Piping
Multiple Line/Header
Connection Example
(When Connecting Five Indoor Units)
Total Piping Length
Farthest Piping Length
(L)
Farthest Piping Length After First Branch ( r )
High/Low Difference in Indoor/Outdoor Section (H)
High/Low Difference in Indoor/Indoor Section (h)
■
Selecting the Refrigerant Branch Kit
Use the table to the right to make the selection
based on the model total of indoor units down-
stream from the branch section or on the number
of indoor units to be connected on the header
branch.
■
Select Each Section of Refrigerant Piping
(1) Section From Outdoor Unit
to First Branch (A)
(2) Sections From Branch to
Indoor Unit (a,b,c,d,e)
(3) Section From Branch to
Branch (B, C)
Select the size from the table to the right.
■
Additional Refrigerant Charge
At the time of shipping, the outdoor unit PUHY-
P400 is charged with 16 kg of refrigerant and the
PUHY-P500 is charged with 22 kg. As this charge
does not include the amount needed for extended
piping, additional charging for each refrigerant
line will be required on site. In order that future
servicing may be properly provided, always keep
a record of the size and length of each refriger-
ant line and the amount of additional charge by
writing it in the space provided on the outdoor
unit.
■
Calculation of Additional Refrigerant Charge
• Calculate the amount of additional charge
based on the length of the piping extension
and the size of the refrigerant line.
• Use the table to the right as guide to calculat-
ing the amount of additional charging and
charge the system according.
• If the calculation results of the calculation re-
sult in a fraction of less than 0.1 kg, round up
to the next 0.1 kg. For example, if the result
of the calculation was 14.32 kg, round the
result up to 14.4 kg.
Total of units downstream
more than 331
Note:
• Branch piping cannot be used
again after the header branch.
• The model total for down-
stream units shown in the ta-
ble below is the model total
when viewed from Point A in
the drawing above.
A
Outdoor Unit
B
First Branch (Branch Joint)
The first branch must be the
CMY-Y202-F when the out-
door unit and header branch
are to be used.
C
Branch Joint
D
Indoor Unit
E
Branch Header
F
Cap
A
L
R
H
A
C
B
c d
h
e
b
D
B
D
D
D
C
D
5
1
2
3 4
F
E
a
Gas Line
(mm)
ø15.88
ø19.05
ø25.4
ø31.75
ø38.1
(3) Refrigerant Piping Diameter In Section
From Branch to Branch
Liquid Line
(mm)
ø9.52
ø12.7
ø12.7
ø15.88
ø15.88
Downstream Unit
Model Total
80 or less
81 to 160
161 to 330
331 to 480
481 or more
(2) Refrigerant Piping Diameter In Section
From Branch to Indoor Unit (Indoor Unit
Piping Diameter)
Model number Piping dia. (mm)
25 · 32 · 40
Liquid Line ø6.35
Gas Line ø12.7
50 · 63 · 71 · 80
Liquid Line ø9.52
Gas Line ø15.88
100 · 125 · 140
Liquid Line ø9.52
Gas Line ø19.05
200
Liquid Line ø12.7
Gas Line ø25.4
250
Liquid Line ø12.7
Gas Line ø28.58