Mitsubishi Electric PUMY-P250YBM2-BS, Technical & Service Manual

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123
TCH091
Mixed Method
Connection Examples
(Connecting to 3 Branch boxes)
Permissible
length
(One-way)
Total piping length
A + G + B + C + D + F + E + a + b + c + d + e + f + g + h + i + j + k + l + m + n + o
[
310 m
Farthest piping length (L1) A + G + a
[
85 m
Farthest piping length via branch box (L2) A + B + C + E + o
[
80 m
Piping length between outdoor unit and branch boxes A + B + C + D + F + E
[
95 m
Farthest piping length from the first joint B + C + E or G + a
[
30 m
Farthest piping length after branch box ( ) o
[
25 m
Total piping length between branch boxes and indoor units d + e + f + g + h + i + j + k + l + m + n + o
[
145 m
Permissible
height
difference
(One-way)
In indoor/outdoor section (H)*1
H
[
50 m (In the case of outdoor unit is set higher than indoor unit)
H
[
40 m (In the case of outdoor unit is set lower than indoor unit)
In branch box/indoor unit section h1 + h2
[
15 m
In each branch unit (h2) h2
[
15 m
In each indoor unit (h3) h3
[
12 m
Number of bends
[
23
*
1
Branch box should be placed within the level between the outdoor unit and indoor units.
■ Selecting the Refrigerant Branch Kit Please select branching kit, which is sold separately, from the table below.
(The kit comprises sets for use with liquid pipes and for use with gas pipes.)
Branch joint Branch header (4 branches) Branch header (8 branches)
CMY-Y62-G-E CMY-Y64-G-E CMY-Y68-G-E
■ Select Each Section of Refrigerant
Piping
(1) Section From Outdoor
Unit to Branch box or
Branch header (A to G)
Each
Section of
Piping
(2) Sections From Branch
box or Branch header to
Indoor Unit (a to o)
Select the size from the table to the
right.
(1) Refrigerant Piping Diameter In Section From Outdoor Unit to Branch box or Branch header
(Outdoor Unit Piping Diameter)
A (mm)
B to G (mm)
* ø12.7 when connecting the indoor unit for PEFY-P200 or P250.
(2) Refrigerant Piping Diameter In Section From Branch box or Branch header to Indoor Unit
(Indoor Unit Piping Diameter) (mm)
Indoor unit series
Model number
Liquid pipe Gas pipe
kW cal
CITY MULTI – 50 – ø6.35 ø12.7
63 – 140 –
ø9.52
ø15.88
200 – ø19.05
250 – ø22.2
M series – 35 – 32
ø6.35
ø9.52
50 – ø12.7
– 50 ø15.88
60 – 63 – ø9.52 ø15.88
S series
– 35 –
ø6.35
ø9.52
50 – 60 – ø12.7
– – ø15.88
71 – – ø9.52 ø15.88
Note:
When connecting the CONNECTION KIT (PAC-LV11M-J) and an M-series indoor unit, refer to the
installation manual for the CONNECTION KIT when selecting the pipe size and piping length.
■ Additional refrigerant charge Refer to the same section in the previous page.
E
R
C
A
B
A
G
B
h3
C
a b
c
E E
E
h2
L2
H*¹
L1
h1
D
d
D
e f g h
F F F F F
D
D
i
F
j k l m
F F F
n
F
o
F
F F
A
Outdoor unit
B
First joint
C
Branch header
D
Branch box
E
CITY MULTI indoor unit
F
M series indoor unit
Model Liquid pipe Gas pipe
P250 ø9.52* ø22.2
P300 ø12.7 ø22.2
Total down-stream capacity of indoor units Model Liquid pipe Gas pipe
– 16.0kW
P250 ø 9.52*
ø15.88
P300 ø 12.7
16.1 kW – 22.4 kW
P250 ø 9.52*
ø19.05
P300 ø 12.7
22.5 kW –
P250 ø 9.52*
ø22.2
P300 ø 12.7