48
P5417009-rev.6
If the piping length L2 from the multi-kit at the first branch to the farthest indoor unit is over 131.2 ft (40m),
follow the instructions below when performing the field-supplied piping work.
In the following instances, there is no limit to the number of main piping branches.
● Piping Branch Restriction
* Main Piping Branch:
Both branches of piping from a multi-kit are connected to the next multi-kits.
(including change-over box (multiple branch type).)
Indoor Unit
Main Piping
Branch
Indoor Unit
Main Piping
Branch
Change-Over Box
(Multiple Branch Type)
If
the installation contains a main piping branch
And,
any piping length between the first branch to each indoor units (L2) is over 131.2 ft (40m).
Then
the difference between closest L2 and the farthest L2 (terminal unit) cannot be greater than
131.2 ft (40m).
b
a
c
e
d
f
i
j
k
h
g
Terminal
Indoor Unit
Terminal
Indoor Unit
Terminal
Indoor Unit
Piping Length from the Multi-Kit at the first branch to
the terminal Indoor Unit is within 131.2 - 295.3 ft (40 - 90m)
(g+h+j)-(b+d) ≤ 131.2 ft (40m)
The Closest Indoor Unit
from the First Branch
ࠉ
The Farthest Indoor Unit
from the First Branch
ࠉ
Terminal
Indoor Unit
The Farthest Indoor Unit
from the First Branch
ࠉ
Terminal
Indoor Unit
The Farthest Indoor Unit
from the First Branch
ࠉ
L2
L2
b
a
d
e
f
h
g
k
j
f
l
i
n
m
(b+d+e+f+g) - c ≤ 131.2 ft (40m)
The Farthest Indoor Unit
from the First Branch
c
L2
b
a
c
e
d
h
i
j
k
f
g
CH-M
(g+k) - (b+d) ≤ 131.2 ft (40m)
The Closest Indoor Unit
from the First Branch
ࠉ
Change-Over Box
(Multiple Branch Type)
L2
b
a
First Branch
Multi-Kit
d
f
h
Installation without Main Piping Branch: Unrestricted
c
e
g
i
The Closest Indoor Unit
from the First Branch
ࠉ
First Branch
Multi-Kit
The Closest Indoor Unit
from the First Branch
ࠉ
L2
* Main Piping Branch
Multi-Kit
First Branch and
* Main Piping Branch
Multi-Kit
First Branch and
* Main Piping Branch
Multi-Kit
Содержание YVAHR072B32S
Страница 2: ......
Страница 88: ...P5417009 rev 6 Code No LIT 12012492 Revised February 2019 2017 Johnson Controls Inc ...