REFRIGERANT LINE ROUTING
7
4
.
Reuse
Existing
Refrigerant
Lines
For
retrofit
applications
,
where
the
existing
refrigerant
lines
will
be
used
,
the
following
precautions
should
be
taken
:
Ensure
that
the
refrigerant
lines
are
the
correct
size
.
Refer
to
Section
2
.
2
listed
and
Table
5
.
1
.
Ensure
that
the
refrigerant
lines
are
free
of
leaks
,
acid
,
and
oil
.
CAUTION
!
If
using
existing
refrigerant
lines
make
certain
that
all
joints
are
brazed
,
not
soldered
.
1
.
Precautions
Important
:
Take
precautions
to
prevent
noise
within
the
building
structure
due
to
vibration
transmission
from
the
refrigerant
lines
.
For
Example
:
When
the
refrigerant
lines
have
to
be
fastened
to
floor
joists
or
other
framing
in
a
structure
,
use
isolation
type
hangers
.
Isolation
hangers
should
also
be
used
when
refrigerant
lines
are
run
in
stud
spaces
or
enclosed
ceilings
.
Where
the
refrigerant
lines
run
through
a
wall
or
sill
,
they
should
be
insulated
and
isolated
.
Isolate
the
lines
from
all
ductwork
.
Minimize
the
number
of
90
º
turns
.
Comply
with
National
,
State
,
and
Local
Codes
when
isolating
line
sets
from
joists
,
rafters
,
walls
,
or
other
structural
elements
.
Isolation
From
Joist
/
Rafter
Side
View
8
Feet
Maximum
Joist
/
Rafter
Isolator
Line
Set
8
Feet
Maximum
Note
:
The
manufacturer
recommends
installing
only
approved
matched
indoor
and
outdoor
systems
.
All
of
the
manufacturer
'
s
split
systems
are
A
.
H
.
R
.
I
.
rated
only
with
TXV
indoor
systems
.
Some
of
the
benefits
of
installing
approved
matched
indoor
and
outdoor
-
r
e
p
m
u
m
it
p
o
,
y
c
n
e
i
c
if
f
e
m
u
m
i
x
a
m
e
r
a
s
m
e
t
s
y
s
ti
l
p
s
formance
and
the
best
overall
system
reliability
.
Secure
Suction
line
from
joists
using
isolators
every
8
ft
.
Secure
Liquid
Line
directly
to
Suction
line
using
tape
,
wire
,
or
other
appropriate
method
every
8
ft
.
Содержание 18S-EHVC24WD2V
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