MXZ-SM42NAMHZ Service Manual

142
OCH789
Method of Combined Branching of Lines and
Headers
Connection Examples
(Connecting to 5 Indoor Units)
Outdoor unit
First branching (branching
joint)
Branching joint
Indoor unit
Branching header
Blind caps
A
B
C
D
E
F
A+B+C+a+b+c+d+e is 984 ft [300 meters]
A+B+b is 492 ft [150 meters]
B+b is 98 tf [30 meters]
The outdoor unit is upper: 164ft [50m] or less
The outdoor unit is lower: 131ft [40m] or less (98ft [30,] or less if PKFY-P06NBMU, PKFY-P08NHMU,
PKFY-P04/06/08/12NLMU, PFFY-P06/08/12NEMU, and PFFY-P06/08/12NRMU are included.)
49 ft [15 meters]
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.)
Total Piping Length
Farthest Piping Length
Farthest Piping Length After First Branch
High/Low Difference
in Indoor/Outdoor Section
High/Low Difference in Indoor/Indoor Section
Permissible
Length
Permissible High/
Low Difference
(L)
(R)
(H)
(h)
■ Selecting the Refrigerant Branch Kit
■ Select Each Section of Refrigerant Piping
Select the size from the table to the right.
(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)
Each
Section of
Piping
Branch Joint
CMY-Y62-G-E
Branch Header (4 branches)
CMY-Y64-G-E
Branch Header (8 branches)
CMY-Y68-G-E
■ Additional refrigerant charge
B
A
E
F
C
D
D D D
D
A
C
b
B
3
H
h
4
L
R
5
1
2
c
d e
a
Note: Pipe re-branching after the header branching
is not possible.
Liquid Line (inch [mm]) Gas Line (inch [mm])
5/8 [ø15.88]3/8 [ø9.52]
Liquid Line
Gas Line
Liquid Line
Gas Line
Piping Diameter
(inch [mm])
Model number
– 18
24 – 54
1/4 [ø6.35 ]
1/2 [ø12.7]
3/8 [ø9.52]
5/8 [ø15.88]
(1) Refrigerant Piping Diameter In Section
From Outdoor Unit to First Branch
(Outdoor Unit Piping Diameter)
(3) Refrigerant Piping Diameter In Section
From Branch to Branch
(2) Refrigerant Piping Diameter In Section
From Branch to Indoor Unit
(Indoor Unit Piping Diameter)
Refer to the same section in the previous page.
Liquid Line
Gas Line
Piping Diameter (inch [mm]) Model
3/8 [ø9.52]
5/8 [ø15.88]
MXZ-SM36/42/48