Mitsubishi Electric CITY MULTI, Техническое и сервисное руководство

Страница: 142 / 160

142
OCH673D
Header-Branch Method
Connection Examples
(Connecting to 4 Indoor Units)
Outdoor Unit
First Branch
Indoor unit A
B
C
B
A
A
a b c
C
c
C C
d
H
h
L
r
Permissible
Length
Total Piping Length A+a+b+c+d
[
300 m
Farthest Piping Length (L) A+d
[
150 m
Farthest Piping Length
After First Branch
(
R
) d is 30 meters or less
Permissible
High/Low
Difference
High/Low Difference in
Indoor/Outdoor Section
(H)
The outdoor unit is upper: 50 meters or less
The outdoor unit is lower: 40 meters or less (30 meters or less if PKFY-P10/15/20/25/32VLM,
PFFY-P*VKM, PFFY-P*VCM, PFFY-P*VL* type of indoor units are included.)
High/Low Difference in
Indoor/Indoor Section
(h) 15 meters or less
■ 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 header (4 branches) Branch header (8 branches)
CMY-Y64-G-E CMY-Y68-G-E
■ Select Each Section of Refrigerant
Piping
(1) Section From Outdoor
Unit to First Branch (A)
Each
Section of
Piping
(2) Sections From Branch to
Indoor Unit (a, b, c, d)
Select the size from the table to the
right.
(1) Refrigerant Piping Diameter In Section
From Outdoor Unit to First Branch (Out-
door Unit Piping Diameter)
Model Piping Diameter (mm)
PUMY-P112
PUMY-P125
PUMY-P140
Liquid Line ø9.52
Gas Line ø15.88
(2) Refrigerant Piping Diameter In Section
From Branch to Indoor Unit (Indoor Unit
Piping Diameter)
Model Piping Diameter (mm)
– 50
Liquid Line ø6.35
Gas Line ø12.7
63 – 140
Liquid Line ø9.52
Gas Line 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.