Johnson Controls YVAHP072B31S, Service Manual

Page: 76 / 1796

1-60
Service Manual
INSTALLATION
,IWKHSLSLQJOHQJWK/IURPWKH0XOWL.LWDWWKH¿UVWEUDQFKWRWKHIDUWKHVWLQGRRUXQLWLVRYHUIWP
IROORZWKHLQVWUXFWLRQVEHORZZKHQSHUIRUPLQJWKH¿HOGVXSSOLHGSLSLQJZRUN
(Example): Installation with Main Piping Branch (
7
)
3LSLQJOHQJWKIURPWKH0XOWL.LWDWWKH¿UVWEUDQFKWRWKHWHUPLQDOLQGRRUXQLWLVZLWKLQIW
90m).
7KHGLIIHUHQFHEHWZHHQWKHSLSLQJOHQJWKIURPWKH¿UVWEUDQFKWRWKHIDUWKHVWLQGRRUXQLWDQGWKHSLSLQJ
OHQJWKIURPWKH¿UVWEUDQFKWRWKHFORVHVWLQGRRUXQLWPXVWEHZLWKLQIWP
*(g+h+j)-(b+d)<131.2 ft (40m)
A header branch can be used with a line branch at the three pipes segment and two pipes segment.
A header branch can also be used after the second branch. Do not connect a line branch to a header
EUDQFK:KHQXVLQJDKHDGHUEUDQFKPDNHVXUHWKDWWKHSLSLQJOHQJWK/IURPWKH0XOWL.LWDWWKH¿UVW
branch to the farthest indoor unit is within 131.2 ft (40m).
In the following instances, there is no limit to the number of main piping branches.
Ɣ 3LSLQJ%UDQFK5HVWULFWLRQ
b
a
First Branch
c
e
d f
i
j
k
h
g
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
Multi-Kit
The Closest Indoor Unit
from the First Branch
ࠉ
The Farthest Indoor Unit
from the First Branch
ࠉ
L2
L2
Line Branch
Header Branch
Within 131.2 ft (40m)
Within 131.2 ft (40m)
Header Branch
Line Branch
Line Branch
CH
CH
CH
CH
CH
CH
Indoor Unit
(
7
): Main Piping Branch:
Both branches of piping from a Multi-Kit are
connected to the next Multi-Kits.
Indoor Unit
Main Branch
a b
c
e
f
d